diff options
Diffstat (limited to 'src/rrd.c')
| -rw-r--r-- | src/rrd.c | 2363 |
1 files changed, 1275 insertions, 1088 deletions
@@ -1,24 +1,4 @@ -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stddef.h> -#include <string.h> -#include <unistd.h> -#include <time.h> -#include <sys/time.h> -#include <sys/mman.h> -#include <pthread.h> -#include <errno.h> -#include <ctype.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <stdlib.h> - #include "common.h" -#include "log.h" -#include "appconfig.h" - -#include "rrd.h" #define RRD_DEFAULT_GAP_INTERPOLATIONS 1 @@ -32,36 +12,143 @@ int rrd_delete_unupdated_dimensions = 0; int rrd_update_every = UPDATE_EVERY; int rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES; +int rrd_memory_mode = RRD_MEMORY_MODE_SAVE; -RRDSET *rrdset_root = NULL; -pthread_rwlock_t rrdset_root_rwlock = PTHREAD_RWLOCK_INITIALIZER; +static int rrdset_compare(void* a, void* b); +static int rrdset_compare_name(void* a, void* b); +static int rrdfamily_compare(void *a, void *b); -int rrd_memory_mode = RRD_MEMORY_MODE_SAVE; +// ---------------------------------------------------------------------------- +// RRDHOST + +RRDHOST localhost = { + .hostname = "localhost", + .rrdset_root = NULL, + .rrdset_root_rwlock = PTHREAD_RWLOCK_INITIALIZER, + .rrdset_root_index = { + { NULL, rrdset_compare }, + AVL_LOCK_INITIALIZER + }, + .rrdset_root_index_name = { + { NULL, rrdset_compare_name }, + AVL_LOCK_INITIALIZER + }, + .rrdfamily_root_index = { + { NULL, rrdfamily_compare }, + AVL_LOCK_INITIALIZER + }, + .variables_root_index = { + { NULL, rrdvar_compare }, + AVL_LOCK_INITIALIZER + }, + .health_log = { + .nextid = 1, + .count = 0, + .max = 1000, + .alarms = NULL, + .alarm_log_rwlock = PTHREAD_RWLOCK_INITIALIZER + } +}; + +void rrdhost_rwlock(RRDHOST *host) { + pthread_rwlock_wrlock(&host->rrdset_root_rwlock); +} + +void rrdhost_rdlock(RRDHOST *host) { + pthread_rwlock_rdlock(&host->rrdset_root_rwlock); +} + +void rrdhost_unlock(RRDHOST *host) { + pthread_rwlock_unlock(&host->rrdset_root_rwlock); +} + +void rrdhost_check_rdlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) { + int ret = pthread_rwlock_trywrlock(&host->rrdset_root_rwlock); + + if(ret == 0) + fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file); +} + +void rrdhost_check_wrlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) { + int ret = pthread_rwlock_tryrdlock(&host->rrdset_root_rwlock); + + if(ret == 0) + fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file); +} + +// ---------------------------------------------------------------------------- +// RRDFAMILY index + +static int rrdfamily_compare(void *a, void *b) { + if(((RRDFAMILY *)a)->hash_family < ((RRDFAMILY *)b)->hash_family) return -1; + else if(((RRDFAMILY *)a)->hash_family > ((RRDFAMILY *)b)->hash_family) return 1; + else return strcmp(((RRDFAMILY *)a)->family, ((RRDFAMILY *)b)->family); +} + +#define rrdfamily_index_add(host, rc) (RRDFAMILY *)avl_insert_lock(&((host)->rrdfamily_root_index), (avl *)(rc)) +#define rrdfamily_index_del(host, rc) (RRDFAMILY *)avl_remove_lock(&((host)->rrdfamily_root_index), (avl *)(rc)) + +static RRDFAMILY *rrdfamily_index_find(RRDHOST *host, const char *id, uint32_t hash) { + RRDFAMILY tmp; + tmp.family = id; + tmp.hash_family = (hash)?hash:simple_hash(tmp.family); + + return (RRDFAMILY *)avl_search_lock(&(host->rrdfamily_root_index), (avl *) &tmp); +} + +RRDFAMILY *rrdfamily_create(const char *id) { + RRDFAMILY *rc = rrdfamily_index_find(&localhost, id, 0); + if(!rc) { + rc = callocz(1, sizeof(RRDFAMILY)); + + rc->family = strdupz(id); + rc->hash_family = simple_hash(rc->family); + + // initialize the variables index + avl_init_lock(&rc->variables_root_index, rrdvar_compare); + RRDFAMILY *ret = rrdfamily_index_add(&localhost, rc); + if(ret != rc) + fatal("INTERNAL ERROR: Expected to INSERT RRDFAMILY '%s' into index, but inserted '%s'.", rc->family, (ret)?ret->family:"NONE"); + } + + rc->use_count++; + return rc; +} + +void rrdfamily_free(RRDFAMILY *rc) { + rc->use_count--; + if(!rc->use_count) { + RRDFAMILY *ret = rrdfamily_index_del(&localhost, rc); + if(ret != rc) + fatal("INTERNAL ERROR: Expected to DELETE RRDFAMILY '%s' from index, but deleted '%s'.", rc->family, (ret)?ret->family:"NONE"); + + if(rc->variables_root_index.avl_tree.root != NULL) + fatal("INTERNAL ERROR: Variables index of RRDFAMILY '%s' that is freed, is not empty.", rc->family); + + freez((void *)rc->family); + freez(rc); + } +} // ---------------------------------------------------------------------------- // RRDSET index static int rrdset_compare(void* a, void* b) { - if(((RRDSET *)a)->hash < ((RRDSET *)b)->hash) return -1; - else if(((RRDSET *)a)->hash > ((RRDSET *)b)->hash) return 1; - else return strcmp(((RRDSET *)a)->id, ((RRDSET *)b)->id); + if(((RRDSET *)a)->hash < ((RRDSET *)b)->hash) return -1; + else if(((RRDSET *)a)->hash > ((RRDSET *)b)->hash) return 1; + else return strcmp(((RRDSET *)a)->id, ((RRDSET *)b)->id); } -avl_tree_lock rrdset_root_index = { - { NULL, rrdset_compare }, - AVL_LOCK_INITIALIZER -}; - -#define rrdset_index_add(st) avl_insert_lock(&rrdset_root_index, (avl *)(st)) -#define rrdset_index_del(st) avl_remove_lock(&rrdset_root_index, (avl *)(st)) +#define rrdset_index_add(host, st) (RRDSET *)avl_insert_lock(&((host)->rrdset_root_index), (avl *)(st)) +#define rrdset_index_del(host, st) (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index), (avl *)(st)) -static RRDSET *rrdset_index_find(const char *id, uint32_t hash) { - RRDSET tmp; - strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX); - tmp.hash = (hash)?hash:simple_hash(tmp.id); +static RRDSET *rrdset_index_find(RRDHOST *host, const char *id, uint32_t hash) { + RRDSET tmp; + strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX); + tmp.hash = (hash)?hash:simple_hash(tmp.id); - return (RRDSET *)avl_search_lock(&(rrdset_root_index), (avl *) &tmp); + return (RRDSET *)avl_search_lock(&(host->rrdset_root_index), (avl *) &tmp); } // ---------------------------------------------------------------------------- @@ -70,46 +157,50 @@ static RRDSET *rrdset_index_find(const char *id, uint32_t hash) { #define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname))) static int rrdset_compare_name(void* a, void* b) { - RRDSET *A = rrdset_from_avlname(a); - RRDSET *B = rrdset_from_avlname(b); + RRDSET *A = rrdset_from_avlname(a); + RRDSET *B = rrdset_from_avlname(b); - // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name); + // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name); - if(A->hash_name < B->hash_name) return -1; - else if(A->hash_name > B->hash_name) return 1; - else return strcmp(A->name, B->name); + if(A->hash_name < B->hash_name) return -1; + else if(A->hash_name > B->hash_name) return 1; + else return strcmp(A->name, B->name); } -avl_tree_lock rrdset_root_index_name = { - { NULL, rrdset_compare_name }, - AVL_LOCK_INITIALIZER -}; +RRDSET *rrdset_index_add_name(RRDHOST *host, RRDSET *st) { + void *result; + // fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name); + result = avl_insert_lock(&host->rrdset_root_index_name, (avl *) (&st->avlname)); + if(result) return rrdset_from_avlname(result); + return NULL; +} -int rrdset_index_add_name(RRDSET *st) { - // fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name); - return avl_insert_lock(&rrdset_root_index_name, (avl *) (&st->avlname)); +RRDSET *rrdset_index_del_name(RRDHOST *host, RRDSET *st) { + void *result; + // fprintf(stderr, "DELETING: %s (name: %s)\n", st->id, st->name); + result = (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index_name), (avl *)(&st->avlname)); + if(result) return rrdset_from_avlname(result); + return NULL; } -#define rrdset_index_del_name(st) avl_remove_lock(&rrdset_root_index_name, (avl *)(&st->avlname)) - -static RRDSET *rrdset_index_find_name(const char *name, uint32_t hash) { - void *result = NULL; - RRDSET tmp; - tmp.name = name; - tmp.hash_name = (hash)?hash:simple_hash(tmp.name); - - // fprintf(stderr, "SEARCHING: %s\n", name); - result = avl_search_lock(&(rrdset_root_index_name), (avl *) (&(tmp.avlname))); - if(result) { - RRDSET *st = rrdset_from_avlname(result); - if(strcmp(st->magic, RRDSET_MAGIC)) - error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name); - - // fprintf(stderr, "FOUND: %s\n", name); - return rrdset_from_avlname(result); - } - // fprintf(stderr, "NOT FOUND: %s\n", name); - return NULL; +static RRDSET *rrdset_index_find_name(RRDHOST *host, const char *name, uint32_t hash) { + void *result = NULL; + RRDSET tmp; + tmp.name = name; + tmp.hash_name = (hash)?hash:simple_hash(tmp.name); + + // fprintf(stderr, "SEARCHING: %s\n", name); + result = avl_search_lock(&host->rrdset_root_index_name, (avl *) (&(tmp.avlname))); + if(result) { + RRDSET *st = rrdset_from_avlname(result); + if(strcmp(st->magic, RRDSET_MAGIC)) + error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name); + + // fprintf(stderr, "FOUND: %s\n", name); + return rrdset_from_avlname(result); + } + // fprintf(stderr, "NOT FOUND: %s\n", name); + return NULL; } @@ -117,20 +208,20 @@ static RRDSET *rrdset_index_find_name(const char *name, uint32_t hash) { // RRDDIM index static int rrddim_compare(void* a, void* b) { - if(((RRDDIM *)a)->hash < ((RRDDIM *)b)->hash) return -1; - else if(((RRDDIM *)a)->hash > ((RRDDIM *)b)->hash) return 1; - else return strcmp(((RRDDIM *)a)->id, ((RRDDIM *)b)->id); + if(((RRDDIM *)a)->hash < ((RRDDIM *)b)->hash) return -1; + else if(((RRDDIM *)a)->hash > ((RRDDIM *)b)->hash) return 1; + else return strcmp(((RRDDIM *)a)->id, ((RRDDIM *)b)->id); } #define rrddim_index_add(st, rd) avl_insert_lock(&((st)->dimensions_index), (avl *)(rd)) #define rrddim_index_del(st,rd ) avl_remove_lock(&((st)->dimensions_index), (avl *)(rd)) static RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) { - RRDDIM tmp; - strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX); - tmp.hash = (hash)?hash:simple_hash(tmp.id); + RRDDIM tmp; + strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX); + tmp.hash = (hash)?hash:simple_hash(tmp.id); - return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp); + return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp); } // ---------------------------------------------------------------------------- @@ -138,29 +229,29 @@ static RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) { int rrdset_type_id(const char *name) { - if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0)) return RRDSET_TYPE_AREA; - else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0)) return RRDSET_TYPE_STACKED; - else if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0)) return RRDSET_TYPE_LINE; - return RRDSET_TYPE_LINE; + if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0)) return RRDSET_TYPE_AREA; + else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0)) return RRDSET_TYPE_STACKED; + else if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0)) return RRDSET_TYPE_LINE; + return RRDSET_TYPE_LINE; } const char *rrdset_type_name(int chart_type) { - static char line[] = RRDSET_TYPE_LINE_NAME; - static char area[] = RRDSET_TYPE_AREA_NAME; - static char stacked[] = RRDSET_TYPE_STACKED_NAME; + static char line[] = RRDSET_TYPE_LINE_NAME; + static char area[] = RRDSET_TYPE_AREA_NAME; + static char stacked[] = RRDSET_TYPE_STACKED_NAME; - switch(chart_type) { - case RRDSET_TYPE_LINE: - return line; + switch(chart_type) { + case RRDSET_TYPE_LINE: + return line; - case RRDSET_TYPE_AREA: - return area; + case RRDSET_TYPE_AREA: + return area; - case RRDSET_TYPE_STACKED: - return stacked; - } - return line; + case RRDSET_TYPE_STACKED: + return stacked; + } + return line; } // ---------------------------------------------------------------------------- @@ -168,33 +259,33 @@ const char *rrdset_type_name(int chart_type) const char *rrd_memory_mode_name(int id) { - static const char ram[] = RRD_MEMORY_MODE_RAM_NAME; - static const char map[] = RRD_MEMORY_MODE_MAP_NAME; - static const char save[] = RRD_MEMORY_MODE_SAVE_NAME; + static const char ram[] = RRD_MEMORY_MODE_RAM_NAME; + static const char map[] = RRD_MEMORY_MODE_MAP_NAME; + static const char save[] = RRD_MEMORY_MODE_SAVE_NAME; - switch(id) { - case RRD_MEMORY_MODE_RAM: - return ram; + switch(id) { + case RRD_MEMORY_MODE_RAM: + return ram; - case RRD_MEMORY_MODE_MAP: - return map; + case RRD_MEMORY_MODE_MAP: + return map; - case RRD_MEMORY_MODE_SAVE: - default: - return save; - } + case RRD_MEMORY_MODE_SAVE: + default: + return save; + } - return save; + return save; } int rrd_memory_mode_id(const char *name) { - if(unlikely(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME))) - return RRD_MEMORY_MODE_RAM; - else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_MAP_NAME))) - return RRD_MEMORY_MODE_MAP; + if(unlikely(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME))) + return RRD_MEMORY_MODE_RAM; + else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_MAP_NAME))) + return RRD_MEMORY_MODE_MAP; - return RRD_MEMORY_MODE_SAVE; + return RRD_MEMORY_MODE_SAVE; } // ---------------------------------------------------------------------------- @@ -202,67 +293,73 @@ int rrd_memory_mode_id(const char *name) int rrddim_algorithm_id(const char *name) { - if(strcmp(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL; - if(strcmp(name, RRDDIM_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE; - if(strcmp(name, RRDDIM_PCENT_OVER_ROW_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_ROW_TOTAL; - if(strcmp(name, RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_DIFF_TOTAL; - return RRDDIM_ABSOLUTE; + if(strcmp(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL; + if(strcmp(name, RRDDIM_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE; + if(strcmp(name, RRDDIM_PCENT_OVER_ROW_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_ROW_TOTAL; + if(strcmp(name, RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_DIFF_TOTAL; + return RRDDIM_ABSOLUTE; } const char *rrddim_algorithm_name(int chart_type) { - static char absolute[] = RRDDIM_ABSOLUTE_NAME; - static char incremental[] = RRDDIM_INCREMENTAL_NAME; - static char percentage_of_absolute_row[] = RRDDIM_PCENT_OVER_ROW_TOTAL_NAME; - static char percentage_of_incremental_row[] = RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME; + static char absolute[] = RRDDIM_ABSOLUTE_NAME; + static char incremental[] = RRDDIM_INCREMENTAL_NAME; + static char percentage_of_absolute_row[] = RRDDIM_PCENT_OVER_ROW_TOTAL_NAME; + static char percentage_of_incremental_row[] = RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME; - switch(chart_type) { - case RRDDIM_ABSOLUTE: - return absolute; + switch(chart_type) { + case RRDDIM_ABSOLUTE: + return absolute; - case RRDDIM_INCREMENTAL: - return incremental; + case RRDDIM_INCREMENTAL: + return incremental; - case RRDDIM_PCENT_OVER_ROW_TOTAL: - return percentage_of_absolute_row; + case RRDDIM_PCENT_OVER_ROW_TOTAL: + return percentage_of_absolute_row; - case RRDDIM_PCENT_OVER_DIFF_TOTAL: - return percentage_of_incremental_row; - } - return absolute; + case RRDDIM_PCENT_OVER_DIFF_TOTAL: + return percentage_of_incremental_row; + } + return absolute; } // ---------------------------------------------------------------------------- // chart names -char *rrdset_strncpy_name(char *to, const char *from, int length) +char *rrdset_strncpyz_name(char *to, const char *from, size_t length) { - int i; - for(i = 0; i < length && from[i] ;i++) { - if(from[i] == '.' || isalpha(from[i]) || isdigit(from[i])) to[i] = from[i]; - else to[i] = '_'; - } - if(i < length) to[i] = '\0'; - to[length - 1] = '\0'; - - return to; + char c, *p = to; + + while (length-- && (c = *from++)) { + if(c != '.' && !isalnum(c)) + c = '_'; + + *p++ = c; + } + + *p = '\0'; + + return to; } void rrdset_set_name(RRDSET *st, const char *name) { - debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name); + debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name); - if(st->name) rrdset_index_del_name(st); + if(st->name) { + rrdset_index_del_name(&localhost, st); + rrdsetvar_rename_all(st); + } - char b[CONFIG_MAX_VALUE + 1]; - char n[RRD_ID_LENGTH_MAX + 1]; + char b[CONFIG_MAX_VALUE + 1]; + char n[RRD_ID_LENGTH_MAX + 1]; - snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name); - rrdset_strncpy_name(b, n, CONFIG_MAX_VALUE); - st->name = config_get(st->id, "name", b); - st->hash_name = simple_hash(st->name); + snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name); + rrdset_strncpyz_name(b, n, CONFIG_MAX_VALUE); + st->name = config_get(st->id, "name", b); + st->hash_name = simple_hash(st->name); - rrdset_index_add_name(st); + rrdset_index_add_name(&localhost, st); } // ---------------------------------------------------------------------------- @@ -270,25 +367,30 @@ void rrdset_set_name(RRDSET *st, const char *name) char *rrdset_cache_dir(const char *id) { - char *ret = NULL; - - static char *cache_dir = NULL; - if(!cache_dir) cache_dir = config_get("global", "cache directory", CACHE_DIR); - - char b[FILENAME_MAX + 1]; - char n[FILENAME_MAX + 1]; - rrdset_strncpy_name(b, id, FILENAME_MAX); - - snprintfz(n, FILENAME_MAX, "%s/%s", cache_dir, b); - ret = config_get(id, "cache directory", n); - - if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || rrd_memory_mode == RRD_MEMORY_MODE_SAVE) { - int r = mkdir(ret, 0775); - if(r != 0 && errno != EEXIST) - error("Cannot create directory '%s'", ret); - } - - return ret; + char *ret = NULL; + + static char *cache_dir = NULL; + if(!cache_dir) { + cache_dir = config_get("global", "cache directory", CACHE_DIR); + int r = mkdir(cache_dir, 0755); + if(r != 0 && errno != EEXIST) + error("Cannot create directory '%s'", cache_dir); + } + + char b[FILENAME_MAX + 1]; + char n[FILENAME_MAX + 1]; + rrdset_strncpyz_name(b, id, FILENAME_MAX); + + snprintfz(n, FILENAME_MAX, "%s/%s", cache_dir, b); + ret = config_get(id, "cache directory", n); + + if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || rrd_memory_mode == RRD_MEMORY_MODE_SAVE) { + int r = mkdir(ret, 0775); + if(r != 0 && errno != EEXIST) + error("Cannot create directory '%s'", ret); + } + + return ret; } // ---------------------------------------------------------------------------- @@ -296,1025 +398,1110 @@ char *rrdset_cache_dir(const char *id) void rrdset_reset(RRDSET *st) { - debug(D_RRD_CALLS, "rrdset_reset() %s", st->name); - - st->last_collected_time.tv_sec = 0; - st->last_collected_time.tv_usec = 0; - st->last_updated.tv_sec = 0; - st->last_updated.tv_usec = 0; - st->current_entry = 0; - st->counter = 0; - st->counter_done = 0; - - RRDDIM *rd; - for(rd = st->dimensions; rd ; rd = rd->next) { - rd->last_collected_time.tv_sec = 0; - rd->last_collected_time.tv_usec = 0; - rd->counter = 0; - bzero(rd->values, rd->entries * sizeof(storage_number)); - } + debug(D_RRD_CALLS, "rrdset_reset() %s", st->name); + + st->last_collected_time.tv_sec = 0; + st->last_collected_time.tv_usec = 0; + st->last_updated.tv_sec = 0; + st->last_updated.tv_usec = 0; + st->current_entry = 0; + st->counter = 0; + st->counter_done = 0; + + RRDDIM *rd; + for(rd = st->dimensions; rd ; rd = rd->next) { + rd->last_collected_time.tv_sec = 0; + rd->last_collected_time.tv_usec = 0; + rd->counter = 0; + bzero(rd->values, rd->entries * sizeof(storage_number)); + } } RRDSET *rrdset_create(const char *type, const char *id, const char *name, const char *family, const char *context, const char *title, const char *units, long priority, int update_every, int chart_type) { - if(!type || !type[0]) { - fatal("Cannot create rrd stats without a type."); - return NULL; - } - - if(!id || !id[0]) { - fatal("Cannot create rrd stats without an id."); - return NULL; - } - - char fullid[RRD_ID_LENGTH_MAX + 1]; - char fullfilename[FILENAME_MAX + 1]; - RRDSET *st = NULL; - - snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id); - - st = rrdset_find(fullid); - if(st) { - error("Cannot create rrd stats for '%s', it already exists.", fullid); - return st; - } - - long entries = config_get_number(fullid, "history", rrd_default_history_entries); - if(entries < 5) entries = config_set_number(fullid, "history", 5); - if(entries > RRD_HISTORY_ENTRIES_MAX) entries = config_set_number(fullid, "history", RRD_HISTORY_ENTRIES_MAX); - - int enabled = config_get_boolean(fullid, "enabled", 1); - if(!enabled) entries = 5; - - unsigned long size = sizeof(RRDSET); - char *cache_dir = rrdset_cache_dir(fullid); - - debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id); - - snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir); - if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) st = (RRDSET *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 0); - if(st) { - if(strcmp(st->magic, RRDSET_MAGIC) != 0) { - errno = 0; - info("Initializing file %s.", fullfilename); - bzero(st, size); - } - else if(strcmp(st->id, fullid) != 0) { - errno = 0; - error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid); - // munmap(st, size); - // st = NULL; - bzero(st, size); - } - else if(st->memsize != size || st->entries != entries) { - errno = 0; - error("File %s does not have the desired size. Clearing it.", fullfilename); - bzero(st, size); - } - else if(st->update_every != update_every) { - errno = 0; - error("File %s does not have the desired update frequency. Clearing it.", fullfilename); - bzero(st, size); - } - else if((time(NULL) - st->last_updated.tv_sec) > update_every * entries) { - errno = 0; - error("File %s is too old. Clearing it.", fullfilename); - bzero(st, size); - } - } - - if(st) { - st->name = NULL; - st->type = NULL; - st->family = NULL; - st->context = NULL; - st->title = NULL; - st->units = NULL; - st->dimensions = NULL; - st->next = NULL; - st->mapped = rrd_memory_mode; - } - else { - st = calloc(1, size); - if(!st) { - fatal("Cannot allocate memory for RRD_STATS %s.%s", type, id); - return NULL; - } - st->mapped = RRD_MEMORY_MODE_RAM; - } - st->memsize = size; - st->entries = entries; - st->update_every = update_every; - - strcpy(st->cache_filename, fullfilename); - strcpy(st->magic, RRDSET_MAGIC); - - strcpy(st->id, fullid); - st->hash = simple_hash(st->id); - - st->cache_dir = cache_dir; - - st->chart_type = rrdset_type_id(config_get(st->id, "chart type", rrdset_type_name(chart_type))); - st->type = config_get(st->id, "type", type); - st->family = config_get(st->id, "family", family?family:st->type); - st->context = config_get(st->id, "context", context?context:st->id); - st->units = config_get(st->id, "units", units?units:""); - - st->priority = config_get_number(st->id, "priority", priority); - st->enabled = enabled; - - st->isdetail = 0; - st->debug = 0; - - st->last_collected_time.tv_sec = 0; - st->last_collected_time.tv_usec = 0; - st->counter_done = 0; - - st->gap_when_lost_iterations_above = (int) ( - config_get_number(st->id, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2); - - avl_init_lock(&st->dimensions_index, rrddim_compare); - - pthread_rwlock_init(&st->rwlock, NULL); - pthread_rwlock_wrlock(&rrdset_root_rwlock); - - if(name && *name) rrdset_set_name(st, name); - else rrdset_set_name(st, id); - - { - char varvalue[CONFIG_MAX_VALUE + 1]; - snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name); - st->title = config_get(st->id, "title", varvalue); - } - - st->next = rrdset_root; - rrdset_root = st; - - rrdset_index_add(st); - - pthread_rwlock_unlock(&rrdset_root_rwlock); - - return(st); + if(!type || !type[0]) { + fatal("Cannot create rrd stats without a type."); + return NULL; + } + + if(!id || !id[0]) { + fatal("Cannot create rrd stats without an id."); + return NULL; + } + + char fullid[RRD_ID_LENGTH_MAX + 1]; + char fullfilename[FILENAME_MAX + 1]; + RRDSET *st = NULL; + + snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id); + + st = rrdset_find(fullid); + if(st) { + error("Cannot create rrd stats for '%s', it already exists.", fullid); + return st; + } + + long entries = config_get_number(fullid, "history", rrd_default_history_entries); + if(entries < 5) entries = config_set_number(fullid, "history", 5); + if(entries > RRD_HISTORY_ENTRIES_MAX) entries = config_set_number(fullid, "history", RRD_HISTORY_ENTRIES_MAX); + + int enabled = config_get_boolean(fullid, "enabled", 1); + if(!enabled) entries = 5; + + unsigned long size = sizeof(RRDSET); + char *cache_dir = rrdset_cache_dir(fullid); + + debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id); + + snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir); + if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) st = (RRDSET *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 0); + if(st) { + if(strcmp(st->magic, RRDSET_MAGIC) != 0) { + errno = 0; + info("Initializing file %s.", fullfilename); + bzero(st, size); + } + else if(strcmp(st->id, fullid) != 0) { + errno = 0; + error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid); + // munmap(st, size); + // st = NULL; + bzero(st, size); + } + else if(st->memsize != size || st->entries != entries) { + errno = 0; + error("File %s does not have the desired size. Clearing it.", fullfilename); + bzero(st, size); + } + else if(st->update_every != update_every) { + errno = 0; + error("File %s does not have the desired update frequency. Clearing it.", fullfilename); + bzero(st, size); + } + else if((time(NULL) - st->last_updated.tv_sec) > update_every * entries) { + errno = 0; + error("File %s is too old. Clearing it.", fullfilename); + bzero(st, size); + } + } + + if(st) { + st->name = NULL; + st->type = NULL; + st->family = NULL; + st->context = NULL; + st->title = NULL; + st->units = NULL; + st->dimensions = NULL; + st->next = NULL; + st->mapped = rrd_memory_mode; + st->variables = NULL; + } + else { + st = callocz(1, size); + st->mapped = RRD_MEMORY_MODE_RAM; + } + + st->memsize = size; + st->entries = entries; + st->update_every = update_every; + + if(st->current_entry >= st->entries) st->current_entry = 0; + + strcpy(st->cache_filename, fullfilename); + strcpy(st->magic, RRDSET_MAGIC); + + strcpy(st->id, fullid); + st->hash = simple_hash(st->id); + + st->cache_dir = cache_dir; + + st->chart_type = rrdset_type_id(config_get(st->id, "chart type", rrdset_type_name(chart_type))); + st->type = config_get(st->id, "type", type); + st->family = config_get(st->id, "family", family?family:st->type); + st->units = config_get(st->id, "units", units?units:""); + + st->context = config_get(st->id, "context", context?context:st->id); + st->hash_context = simple_hash(st->context); + + st->priority = config_get_number(st->id, "priority", priority); + st->enabled = enabled; + + st->isdetail = 0; + st->debug = 0; + + // if(!strcmp(st->id, "disk_util.dm-0")) { + // st->debug = 1; + // error("enabled debugging for '%s'", st->id); + // } + // else error("not enabled debugging for '%s'", st->id); + + st->green = NAN; + st->red = NAN; + + st->last_collected_time.tv_sec = 0; + st->last_collected_time.tv_usec = 0; + st->counter_done = 0; + + st->gap_when_lost_iterations_above = (int) ( + config_get_number(st->id, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2); + + avl_init_lock(&st->dimensions_index, rrddim_compare); + avl_init_lock(&st->variables_root_index, rrdvar_compare); + + pthread_rwlock_init(&st->rwlock, NULL); + rrdhost_rwlock(&localhost); + + if(name && *name) rrdset_set_name(st, name); + else rrdset_set_name(st, id); + + { + char varvalue[CONFIG_MAX_VALUE + 1]; + snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name); + st->title = config_get(st->id, "title", varvalue); + } + + st->rrdfamily = rrdfamily_create(st->family); + st->rrdhost = &localhost; + + st->next = localhost.rrdset_root; + localhost.rrdset_root = st; + + if(health_enabled) { + rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, 0); + rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, 0); + rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, 0); + rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, 0); + rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, 0); + } + + rrdset_index_add(&localhost, st); + + rrdsetcalc_link_matching(st); + rrdcalctemplate_link_matching(st); + + rrdhost_unlock(&localhost); + + return(st); } RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm) { - char filename[FILENAME_MAX + 1]; - char fullfilename[FILENAME_MAX + 1]; - - char varname[CONFIG_MAX_NAME + 1]; - RRDDIM *rd = NULL; - unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number)); - - debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id); - - rrdset_strncpy_name(filename, id, FILENAME_MAX); - snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename); - if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) rd = (RRDDIM *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 1); - if(rd) { - struct timeval now; - gettimeofday(&now, NULL); - - if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) { - errno = 0; - info("Initializing file %s.", fullfilename); - bzero(rd, size); - } - else if(rd->memsize != size) { - errno = 0; - error("File %s does not have the desired size. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(rd->multiplier != multiplier) { - errno = 0; - error("File %s does not have the same multiplier. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(rd->divisor != divisor) { - errno = 0; - error("File %s does not have the same divisor. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(rd->algorithm != algorithm) { - errno = 0; - error("File %s does not have the same algorithm. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(rd->update_every != st->update_every) { - errno = 0; - error("File %s does not have the same refresh frequency. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(usecdiff(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * 1000000ULL)) { - errno = 0; - error("File %s is too old. Clearing it.", fullfilename); - bzero(rd, size); - } - else if(strcmp(rd->id, id) != 0) { - errno = 0; - error("File %s contents are not for dimension %s. Clearing it.", fullfilename, id); - // munmap(rd, size); - // rd = NULL; - bzero(rd, size); - } - } - - if(rd) { - // we have a file mapped for rd - rd->mapped = rrd_memory_mode; - rd->flags = 0x00000000; - rd->next = NULL; - rd->name = NULL; - } - else { - // if we didn't manage to get a mmap'd dimension, just create one - - rd = calloc(1, size); - if(!rd) { - fatal("Cannot allocate RRD_DIMENSION %s/%s.", st->id, id); - return NULL; - } - - rd->mapped = RRD_MEMORY_MODE_RAM; - } - rd->memsize = size; - - strcpy(rd->magic, RRDDIMENSION_MAGIC); - strcpy(rd->cache_filename, fullfilename); - strncpyz(rd->id, id, RRD_ID_LENGTH_MAX); - rd->hash = simple_hash(rd->id); - - snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id); - rd->name = config_get(st->id, varname, (name && *name)?name:rd->id); - - snprintfz(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id); - rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm))); - - snprintfz(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id); - rd->multiplier = config_get_number(st->id, varname, multiplier); - - snprintfz(varname, CONFIG_MAX_NAME, "dim %s divisor", rd->id); - rd->divisor = config_get_number(st->id, varname, divisor); - if(!rd->divisor) rd->divisor = 1; - - rd->entries = st->entries; - rd->update_every = st->update_every; - - // prevent incremental calculation spikes - rd->counter = 0; - - // append this dimension - pthread_rwlock_wrlock(&st->rwlock); - if(!st->dimensions) - st->dimensions = rd; - else { - RRDDIM *td = st->dimensions; - for(; td->next; td = td->next) ; - td->next = rd; - } - pthread_rwlock_unlock(&st->rwlock); - - rrddim_index_add(st, rd); - - return(rd); + char filename[FILENAME_MAX + 1]; + char fullfilename[FILENAME_MAX + 1]; + + char varname[CONFIG_MAX_NAME + 1]; + RRDDIM *rd = NULL; + unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number)); + + debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id); + + rrdset_strncpyz_name(filename, id, FILENAME_MAX); + snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename); + if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) rd = (RRDDIM *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 1); + if(rd) { + struct timeval now; + gettimeofday(&now, NULL); + + if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) { + errno = 0; + info("Initializing file %s.", fullfilename); + bzero(rd, size); + } + else if(rd->memsize != size) { + errno = 0; + error("File %s does not have the desired size. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(rd->multiplier != multiplier) { + errno = 0; + error("File %s does not have the same multiplier. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(rd->divisor != divisor) { + errno = 0; + error("File %s does not have the same divisor. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(rd->algorithm != algorithm) { + errno = 0; + error("File %s does not have the same algorithm. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(rd->update_every != st->update_every) { + errno = 0; + error("File %s does not have the same refresh frequency. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(usec_dt(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * 1000000ULL)) { + errno = 0; + error("File %s is too old. Clearing it.", fullfilename); + bzero(rd, size); + } + else if(strcmp(rd->id, id) != 0) { + errno = 0; + error("File %s contents are not for dimension %s. Clearing it.", fullfilename, id); + // munmap(rd, size); + // rd = NULL; + bzero(rd, size); + } + } + + if(rd) { + // we have a file mapped for rd + rd->mapped = rrd_memory_mode; + rd->flags = 0x00000000; + rd->variables = NULL; + rd->next = NULL; + rd->name = NULL; + } + else { + // if we didn't manage to get a mmap'd dimension, just create one + + rd = callocz(1, size); + rd->mapped = RRD_MEMORY_MODE_RAM; + } + rd->memsize = size; + + strcpy(rd->magic, RRDDIMENSION_MAGIC); + strcpy(rd->cache_filename, fullfilename); + strncpyz(rd->id, id, RRD_ID_LENGTH_MAX); + rd->hash = simple_hash(rd->id); + + snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id); + rd->name = config_get(st->id, varname, (name && *name)?name:rd->id); + + snprintfz(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id); + rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm))); + + snprintfz(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id); + rd->multiplier = config_get_number(st->id, varname, multiplier); + + snprintfz(varname, CONFIG_MAX_NAME, "dim %s divisor", rd->id); + rd->divisor = config_get_number(st->id, varname, divisor); + if(!rd->divisor) rd->divisor = 1; + + rd->entries = st->entries; + rd->update_every = st->update_every; + + // prevent incremental calculation spikes + rd->counter = 0; + rd->updated = 0; + rd->calculated_value = 0; + rd->last_calculated_value = 0; + rd->collected_value = 0; + rd->last_collected_value = 0; + rd->collected_volume = 0; + rd->stored_volume = 0; + rd->last_stored_value = 0; + rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS); + rd->last_collected_time.tv_sec = 0; + rd->last_collected_time.tv_usec = 0; + rd->rrdset = st; + + // append this dimension + pthread_rwlock_wrlock(&st->rwlock); + if(!st->dimensions) + st->dimensions = rd; + else { + RRDDIM *td = st->dimensions; + for(; td->next; td = td->next) ; + td->next = rd; + } + + if(health_enabled) { + rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, 0); + rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, 0); + rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, 0); + } + + pthread_rwlock_unlock(&st->rwlock); + + rrddim_index_add(st, rd); + + return(rd); } void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name) { - debug(D_RRD_CALLS, "rrddim_set_name() %s.%s", st->name, rd->name); + debug(D_RRD_CALLS, "rrddim_set_name() %s.%s", st->name, rd->name); + + char varname[CONFIG_MAX_NAME + 1]; + snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id); + config_set_default(st->id, varname, name); - char varname[CONFIG_MAX_NAME + 1]; - snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id); - config_set_default(st->id, varname, name); + rrddimvar_rename_all(rd); } void rrddim_free(RRDSET *st, RRDDIM *rd) { - debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name); - - RRDDIM *i, *last = NULL; - for(i = st->dimensions; i && i != rd ; i = i->next) last = i; - - if(!i) { - error("Request to free dimension %s.%s but it is not linked.", st->id, rd->name); - return; - } - - if(last) last->next = rd->next; - else st->dimensions = rd->next; - rd->next = NULL; - - rrddim_index_del(st, rd); - - // free(rd->annotations); - if(rd->mapped == RRD_MEMORY_MODE_SAVE) { - debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename); - savememory(rd->cache_filename, rd, rd->memsize); - - debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name); - munmap(rd, rd->memsize); - } - else if(rd->mapped == RRD_MEMORY_MODE_MAP) { - debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name); - munmap(rd, rd->memsize); - } - else { - debug(D_RRD_CALLS, "Removing dimension '%s'.", rd->name); - free(rd); - } + debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name); + + if(rd == st->dimensions) + st->dimensions = rd->next; + else { + RRDDIM *i; + for (i = st->dimensions; i && i->next != rd; i = i->next) ; + + if (i && i->next == rd) + i->next = rd->next; + else + error("Request to free dimension '%s.%s' but it is not linked.", st->id, rd->name); + } + rd->next = NULL; + + while(rd->variables) + rrddimvar_free(rd->variables); + + rrddim_index_del(st, rd); + + // free(rd->annotations); + if(rd->mapped == RRD_MEMORY_MODE_SAVE) { + debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename); + savememory(rd->cache_filename, rd, rd->memsize); + + debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name); + munmap(rd, rd->memsize); + } + else if(rd->mapped == RRD_MEMORY_MODE_MAP) { + debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name); + munmap(rd, rd->memsize); + } + else { + debug(D_RRD_CALLS, "Removing dimension '%s'.", rd->name); + freez(rd); + } } void rrdset_free_all(void) { - info("Freeing all memory..."); + info("Freeing all memory..."); - RRDSET *st; - for(st = rrdset_root; st ;) { - RRDSET *next = st->next; + rrdhost_rwlock(&localhost); - while(st->dimensions) - rrddim_free(st, st->dimensions); + RRDSET *st; + for(st = localhost.rrdset_root; st ;) { + RRDSET *next = st->next; - rrdset_index_del(st); + pthread_rwlock_wrlock(&st->rwlock); - if(st->mapped == RRD_MEMORY_MODE_SAVE) { - debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename); - savememory(st->cache_filename, st, st->memsize); + while(st->variables) + rrdsetvar_free(st->variables); - debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name); - munmap(st, st->memsize); - } - else if(st->mapped == RRD_MEMORY_MODE_MAP) { - debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name); - munmap(st, st->memsize); - } - else - free(st); + while(st->alarms) + rrdsetcalc_unlink(st->alarms); - st = next; - } - rrdset_root = NULL; + while(st->dimensions) + rrddim_free(st, st->dimensions); - info("Memory cleanup completed..."); -} + rrdset_index_del(&localhost, st); -void rrdset_save_all(void) -{ - debug(D_RRD_CALLS, "rrdset_save_all()"); + st->rrdfamily->use_count--; + if(!st->rrdfamily->use_count) + rrdfamily_free(st->rrdfamily); + + pthread_rwlock_unlock(&st->rwlock); + + if(st->mapped == RRD_MEMORY_MODE_SAVE) { + debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename); + savememory(st->cache_filename, st, st->memsize); + + debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name); + munmap(st, st->memsize); + } + else if(st->mapped == RRD_MEMORY_MODE_MAP) { + debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name); + munmap(st, st->memsize); + } + else + freez(st); + + st = next; + } + localhost.rrdset_root = NULL; + + rrdhost_unlock(&localhost); + + info("Memory cleanup completed..."); +} - // let it log a few error messages - error_log_limit_reset(); +void rrdset_save_all(void) { + info("Saving database..."); - RRDSET *st; - RRDDIM *rd; + RRDSET *st; + RRDDIM *rd; - pthread_rwlock_wrlock(&rrdset_root_rwlock); - for(st = rrdset_root; st ; st = st->next) { - pthread_rwlock_wrlock(&st->rwlock); + rrdhost_rwlock(&localhost); + for(st = localhost.rrdset_root; st ; st = st->next) { + pthread_rwlock_wrlock(&st->rwlock); - if(st->mapped == RRD_MEMORY_MODE_SAVE) { - debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename); - savememory(st->cache_filename, st, st->memsize); - } + if(st->mapped == RRD_MEMORY_MODE_SAVE) { + debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename); + savememory(st->cache_filename, st, st->memsize); + } - for(rd = st->dimensions; rd ; rd = rd->next) { - if(likely(rd->mapped == RRD_MEMORY_MODE_SAVE)) { - debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename); - savememory(rd->cache_filename, rd, rd->memsize); - } - } + for(rd = st->dimensions; rd ; rd = rd->next) { + if(likely(rd->mapped == RRD_MEMORY_MODE_SAVE)) { + debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename); + savememory(rd->cache_filename, rd, rd->memsize); + } + } - pthread_rwlock_unlock(&st->rwlock); - } - pthread_rwlock_unlock(&rrdset_root_rwlock); + pthread_rwlock_unlock(&st->rwlock); + } + rrdhost_unlock(&localhost); } RRDSET *rrdset_find(const char *id) { - debug(D_RRD_CALLS, "rrdset_find() for chart %s", id); + debug(D_RRD_CALLS, "rrdset_find() for chart %s", id); - RRDSET *st = rrdset_index_find(id, 0); - return(st); + RRDSET *st = rrdset_index_find(&localhost, id, 0); + return(st); } RRDSET *rrdset_find_bytype(const char *type, const char *id) { - debug(D_RRD_CALLS, "rrdset_find_bytype() for chart %s.%s", type, id); + debug(D_RRD_CALLS, "rrdset_find_bytype() for chart %s.%s", type, id); - char buf[RRD_ID_LENGTH_MAX + 1]; + char buf[RRD_ID_LENGTH_MAX + 1]; - strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1); - strcat(buf, "."); - int len = (int) strlen(buf); - strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len)); + strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1); + strcat(buf, "."); + int len = (int) strlen(buf); + strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len)); - return(rrdset_find(buf)); + return(rrdset_find(buf)); } RRDSET *rrdset_find_byname(const char *name) { - debug(D_RRD_CALLS, "rrdset_find_byname() for chart %s", name); + debug(D_RRD_CALLS, "rrdset_find_byname() for chart %s", name); - RRDSET *st = rrdset_index_find_name(name, 0); - return(st); + RRDSET *st = rrdset_index_find_name(&localhost, name, 0); + return(st); } RRDDIM *rrddim_find(RRDSET *st, const char *id) { - debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id); + debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id); - return rrddim_index_find(st, id, 0); + return rrddim_index_find(st, id, 0); } int rrddim_hide(RRDSET *st, const char *id) { - debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id); + debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id); - RRDDIM *rd = rrddim_find(st, id); - if(unlikely(!rd)) { - error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); - return 1; - } + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); + return 1; + } - rd->flags |= RRDDIM_FLAG_HIDDEN; - return 0; + rd->flags |= RRDDIM_FLAG_HIDDEN; + return 0; } int rrddim_unhide(RRDSET *st, const char *id) { - debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id); + debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id); - RRDDIM *rd = rrddim_find(st, id); - if(unlikely(!rd)) { - error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); - return 1; - } + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); + return 1; + } - if(rd->flags & RRDDIM_FLAG_HIDDEN) rd->flags ^= RRDDIM_FLAG_HIDDEN; - return 0; + if(rd->flags & RRDDIM_FLAG_HIDDEN) rd->flags ^= RRDDIM_FLAG_HIDDEN; + return 0; } collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value) { - debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value); + debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value); - gettimeofday(&rd->last_collected_time, NULL); - rd->collected_value = value; - rd->updated = 1; - rd->counter++; + gettimeofday(&rd->last_collected_time, NULL); + rd->collected_value = value; + rd->updated = 1; + rd->counter++; - return rd->last_collected_value; + return rd->last_collected_value; } collected_number rrddim_set(RRDSET *st, const char *id, collected_number value) { - RRDDIM *rd = rrddim_find(st, id); - if(unlikely(!rd)) { - error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); - return 0; - } + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id); + return 0; + } - return rrddim_set_by_pointer(st, rd, value); + return rrddim_set_by_pointer(st, rd, value); } void rrdset_next_usec(RRDSET *st, unsigned long long microseconds) { - if(!microseconds) rrdset_next(st); - else { - debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds); + if(!microseconds) rrdset_next(st); + else { + debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds); - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds); - st->usec_since_last_update = microseconds; - } + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds); + st->usec_since_last_update = microseconds; + } } void rrdset_next(RRDSET *st) { - unsigned long long microseconds = 0; + unsigned long long microseconds = 0; - if(likely(st->last_collected_time.tv_sec)) { - struct timeval now; - gettimeofday(&now, NULL); - microseconds = usecdiff(&now, &st->last_collected_time); - } - // prevent infinite loop - else microseconds = st->update_every * 1000000ULL; + if(likely(st->last_collected_time.tv_sec)) { + struct timeval now; + gettimeofday(&now, NULL); + microseconds = usec_dt(&now, &st->last_collected_time); + } + // prevent infinite loop + else microseconds = st->update_every * 1000000ULL; - rrdset_next_usec(st, microseconds); + rrdset_next_usec(st, microseconds); } void rrdset_next_plugins(RRDSET *st) { - rrdset_next(st); + rrdset_next(st); } unsigned long long rrdset_done(RRDSET *st) { - debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name); - - RRDDIM *rd, *last; - int oldstate, store_this_entry = 1, first_entry = 0; - unsigned long long last_ut, now_ut, next_ut, stored_entries = 0; - - if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0)) - error("Cannot set pthread cancel state to DISABLE."); - - // a read lock is OK here - pthread_rwlock_rdlock(&st->rwlock); - - // enable the chart, if it was disabled - if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled) - st->enabled = 1; - - // check if the chart has a long time to be updated - if(unlikely(st->usec_since_last_update > st->entries * st->update_every * 1000000ULL)) { - info("%s: took too long to be updated (%0.3Lf secs). Reseting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0)); - rrdset_reset(st); - st->usec_since_last_update = st->update_every * 1000000ULL; - first_entry = 1; - } - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update); - - // set last_collected_time - if(unlikely(!st->last_collected_time.tv_sec)) { - // it is the first entry - // set the last_collected_time to now - gettimeofday(&st->last_collected_time, NULL); - - // the first entry should not be stored - store_this_entry = 0; - first_entry = 1; - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: has not set last_collected_time. Setting it now. Will not store the next entry.", st->name); - } - else { - // it is not the first entry - // calculate the proper last_collected_time, using usec_since_last_update - unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec + st->usec_since_last_update; - st->last_collected_time.tv_sec = (time_t) (ut / 1000000ULL); - st->last_collected_time.tv_usec = (useconds_t) (ut % 1000000ULL); - } - - // if this set has not been updated in the past - // we fake the last_update time to be = now - usec_since_last_update - if(unlikely(!st->last_updated.tv_sec)) { - // it has never been updated before - // set a fake last_updated, in the past using usec_since_last_update - unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update; - st->last_updated.tv_sec = (time_t) (ut / 1000000ULL); - st->last_updated.tv_usec = (useconds_t) (ut % 1000000ULL); - - // the first entry should not be stored - store_this_entry = 0; - first_entry = 1; - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: initializing last_updated to now - %llu microseconds (%0.3Lf). Will not store the next entry.", st->name, st->usec_since_last_update, (long double)ut/1000000.0); - } - - // check if we will re-write the entire data set - if(unlikely(usecdiff(&st->last_collected_time, &st->last_updated) > st->update_every * st->entries * 1000000ULL)) { - info("%s: too old data (last updated at %u.%u, last collected at %u.%u). Reseting it. Will not store the next entry.", st->name, st->last_updated.tv_sec, st->last_updated.tv_usec, st->last_collected_time.tv_sec, st->last_collected_time.tv_usec); - rrdset_reset(st); - - st->usec_since_last_update = st->update_every * 1000000ULL; - - gettimeofday(&st->last_collected_time, NULL); - - unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update; - st->last_updated.tv_sec = (time_t) (ut / 1000000ULL); - st->last_updated.tv_usec = (useconds_t) (ut % 1000000ULL); - - // the first entry should not be stored - store_this_entry = 0; - first_entry = 1; - } - - // these are the 3 variables that will help us in interpolation - // last_ut = the last time we added a value to the storage - // now_ut = the time the current value is taken at - // next_ut = the time of the next interpolation point - last_ut = st->last_updated.tv_sec * 1000000ULL + st->last_updated.tv_usec; - now_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec; - next_ut = (st->last_updated.tv_sec + st->update_every) * 1000000ULL; - - if(unlikely(!first_entry && now_ut < next_ut)) { - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name); - } - - if(unlikely(st->debug)) { - debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0); - debug(D_RRD_STATS, "%s: now ut = %0.3Lf (current update time)", st->name, (long double)now_ut/1000000.0); - debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_ut/1000000.0); - } - - if(unlikely(!st->counter_done)) { - store_this_entry = 0; - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name); - } - st->counter_done++; - - // calculate totals and count the dimensions - int dimensions; - st->collected_total = 0; - for( rd = st->dimensions, dimensions = 0 ; likely(rd) ; rd = rd->next, dimensions++ ) - st->collected_total += rd->collected_value; - - uint32_t storage_flags = SN_EXISTS; - - // process all dimensions to calculate their values - // based on the collected figures only - // at this stage we do not interpolate anything - for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) { - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: START " - " last_collected_value = " COLLECTED_NUMBER_FORMAT - " collected_value = " COLLECTED_NUMBER_FORMAT - " last_calculated_value = " CALCULATED_NUMBER_FORMAT - " calculated_value = " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , rd->last_collected_value - , rd->collected_value - , rd->last_calculated_value - , rd->calculated_value - ); - - switch(rd->algorithm) { - case RRDDIM_ABSOLUTE: - rd->calculated_value = (calculated_number)rd->collected_value - * (calculated_number)rd->multiplier - / (calculated_number)rd->divisor; - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN " - CALCULATED_NUMBER_FORMAT " = " - COLLECTED_NUMBER_FORMAT - " * " CALCULATED_NUMBER_FORMAT - " / " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , rd->calculated_value - , rd->collected_value - , (calculated_number)rd->multiplier - , (calculated_number)rd->divisor - ); - break; - - case RRDDIM_PCENT_OVER_ROW_TOTAL: - if(unlikely(!st->collected_total)) rd->calculated_value = 0; - else - // the percentage of the current value - // over the total of all dimensions - rd->calculated_value = - (calculated_number)100 - * (calculated_number)rd->collected_value - / (calculated_number)st->collected_total; - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW " - CALCULATED_NUMBER_FORMAT " = 100" - " * " COLLECTED_NUMBER_FORMAT - " / " COLLECTED_NUMBER_FORMAT - , st->id, rd->name - , rd->calculated_value - , rd->collected_value - , st->collected_total - ); - break; - - case RRDDIM_INCREMENTAL: - if(unlikely(!rd->updated || rd->counter <= 1)) { - rd->calculated_value = 0; - continue; - } - - // if the new is smaller than the old (an overflow, or reset), set the old equal to the new - // to reset the calculation (it will give zero as the calculation for this second) - if(unlikely(rd->last_collected_value > rd->collected_value)) { - debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT - , st->name, rd->name - , rd->last_collected_value - , rd->collected_value); - if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET; - rd->last_collected_value = rd->collected_value; - } - - rd->calculated_value = (calculated_number)(rd->collected_value - rd->last_collected_value) - * (calculated_number)rd->multiplier - / (calculated_number)rd->divisor; - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC INC PRE " - CALCULATED_NUMBER_FORMAT " = (" - COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT - ")" - " * " CALCULATED_NUMBER_FORMAT - " / " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , rd->calculated_value - , rd->collected_value, rd->last_collected_value - , (calculated_number)rd->multiplier - , (calculated_number)rd->divisor - ); - break; - - case RRDDIM_PCENT_OVER_DIFF_TOTAL: - if(unlikely(!rd->updated || rd->counter <= 1)) { - rd->calculated_value = 0; - continue; - } - - // the percentage of the current increment - // over the increment of all dimensions together - if(unlikely(st->collected_total == st->last_collected_total)) rd->calculated_value = rd->last_calculated_value; - else rd->calculated_value = - (calculated_number)100 - * (calculated_number)(rd->collected_value - rd->last_collected_value) - / (calculated_number)(st->collected_total - st->last_collected_total); - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF " - CALCULATED_NUMBER_FORMAT " = 100" - " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" - " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" - , st->id, rd->name - , rd->calculated_value - , rd->collected_value, rd->last_collected_value - , st->collected_total, st->last_collected_total - ); - break; - - default: - // make the default zero, to make sure - // it gets noticed when we add new types - rd->calculated_value = 0; - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC " - CALCULATED_NUMBER_FORMAT " = 0" - , st->id, rd->name - , rd->calculated_value - ); - break; - } - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: PHASE2 " - " last_collected_value = " COLLECTED_NUMBER_FORMAT - " collected_value = " COLLECTED_NUMBER_FORMAT - " last_calculated_value = " CALCULATED_NUMBER_FORMAT - " calculated_value = " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , rd->last_collected_value - , rd->collected_value - , rd->last_calculated_value - , rd->calculated_value - ); - - } - - // at this point we have all the calculated values ready - // it is now time to interpolate values on a second boundary - - unsigned long long first_ut = last_ut; - long long iterations = (now_ut - last_ut) / (st->update_every * 1000000ULL); - if((now_ut % (st->update_every * 1000000ULL)) == 0) iterations++; - - for( ; likely(next_ut <= now_ut) ; next_ut += st->update_every * 1000000ULL, iterations-- ) { + if(unlikely(netdata_exit)) return 0; + + debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name); + + RRDDIM *rd, *last; + int oldstate, store_this_entry = 1, first_entry = 0; + unsigned long long last_ut, now_ut, next_ut, stored_entries = 0; + + if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0)) + error("Cannot set pthread cancel state to DISABLE."); + + // a read lock is OK here + pthread_rwlock_rdlock(&st->rwlock); + + // enable the chart, if it was disabled + if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled) + st->enabled = 1; + + // check if the chart has a long time to be updated + if(unlikely(st->usec_since_last_update > st->entries * st->update_every * 1000000ULL)) { + info("%s: took too long to be updated (%0.3Lf secs). Reseting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0)); + rrdset_reset(st); + st->usec_since_last_update = st->update_every * 1000000ULL; + first_entry = 1; + } + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update); + + // set last_collected_time + if(unlikely(!st->last_collected_time.tv_sec)) { + // it is the first entry + // set the last_collected_time to now + gettimeofday(&st->last_collected_time, NULL); + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: has not set last_collected_time. Setting it now. Will not store the next entry.", st->name); + } + else { + // it is not the first entry + // calculate the proper last_collected_time, using usec_since_last_update + unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec + st->usec_since_last_update; + st->last_collected_time.tv_sec = (time_t) (ut / 1000000ULL); + st->last_collected_time.tv_usec = (suseconds_t) (ut % 1000000ULL); + } + + // if this set has not been updated in the past + // we fake the last_update time to be = now - usec_since_last_update + if(unlikely(!st->last_updated.tv_sec)) { + // it has never been updated before + // set a fake last_updated, in the past using usec_since_last_update + unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update; + st->last_updated.tv_sec = (time_t) (ut / 1000000ULL); + st->last_updated.tv_usec = (suseconds_t) (ut % 1000000ULL); + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: initializing last_updated to now - %llu microseconds (%0.3Lf). Will not store the next entry.", st->name, st->usec_since_last_update, (long double)ut/1000000.0); + } + + // check if we will re-write the entire data set + if(unlikely(usec_dt(&st->last_collected_time, &st->last_updated) > st->update_every * st->entries * 1000000ULL)) { + info("%s: too old data (last updated at %ld.%ld, last collected at %ld.%ld). Reseting it. Will not store the next entry.", st->name, st->last_updated.tv_sec, st->last_updated.tv_usec, st->last_collected_time.tv_sec, st->last_collected_time.tv_usec); + rrdset_reset(st); + + st->usec_since_last_update = st->update_every * 1000000ULL; + + gettimeofday(&st->last_collected_time, NULL); + + unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update; + st->last_updated.tv_sec = (time_t) (ut / 1000000ULL); + st->last_updated.tv_usec = (suseconds_t) (ut % 1000000ULL); + + // the first entry should not be stored + store_this_entry = 0; + first_entry = 1; + } + + // these are the 3 variables that will help us in interpolation + // last_ut = the last time we added a value to the storage + // now_ut = the time the current value is taken at + // next_ut = the time of the next interpolation point + last_ut = st->last_updated.tv_sec * 1000000ULL + st->last_updated.tv_usec; + now_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec; + next_ut = (st->last_updated.tv_sec + st->update_every) * 1000000ULL; + + if(unlikely(!first_entry && now_ut < next_ut)) { + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name); + } + + if(unlikely(st->debug)) { + debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0); + debug(D_RRD_STATS, "%s: now ut = %0.3Lf (current update time)", st->name, (long double)now_ut/1000000.0); + debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_ut/1000000.0); + } + + if(unlikely(!st->counter_done)) { + store_this_entry = 0; + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name); + } + st->counter_done++; + + // calculate totals and count the dimensions + int dimensions; + st->collected_total = 0; + for( rd = st->dimensions, dimensions = 0 ; likely(rd) ; rd = rd->next, dimensions++ ) + if(likely(rd->updated)) st->collected_total += rd->collected_value; + + uint32_t storage_flags = SN_EXISTS; + + // process all dimensions to calculate their values + // based on the collected figures only + // at this stage we do not interpolate anything + for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) { + + if(unlikely(!rd->updated)) { + rd->calculated_value = 0; + continue; + } + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: START " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + + switch(rd->algorithm) { + case RRDDIM_ABSOLUTE: + rd->calculated_value = (calculated_number)rd->collected_value + * (calculated_number)rd->multiplier + / (calculated_number)rd->divisor; + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN " + CALCULATED_NUMBER_FORMAT " = " + COLLECTED_NUMBER_FORMAT + " * " CALCULATED_NUMBER_FORMAT + " / " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value + , (calculated_number)rd->multiplier + , (calculated_number)rd->divisor + ); + break; + + case RRDDIM_PCENT_OVER_ROW_TOTAL: + if(unlikely(!st->collected_total)) + rd->calculated_value = 0; + else + // the percentage of the current value + // over the total of all dimensions + rd->calculated_value = + (calculated_number)100 + * (calculated_number)rd->collected_value + / (calculated_number)st->collected_total; + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW " + CALCULATED_NUMBER_FORMAT " = 100" + " * " COLLECTED_NUMBER_FORMAT + " / " COLLECTED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value + , st->collected_total + ); + break; + + case RRDDIM_INCREMENTAL: + if(unlikely(rd->counter <= 1)) { + rd->calculated_value = 0; + continue; + } + + // if the new is smaller than the old (an overflow, or reset), set the old equal to the new + // to reset the calculation (it will give zero as the calculation for this second) + if(unlikely(rd->last_collected_value > rd->collected_value)) { + debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT + , st->name, rd->name + , rd->last_collected_value + , rd->collected_value); + if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET; + rd->last_collected_value = rd->collected_value; + } + + rd->calculated_value = + (calculated_number)(rd->collected_value - rd->last_collected_value) + * (calculated_number)rd->multiplier + / (calculated_number)rd->divisor; + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC INC PRE " + CALCULATED_NUMBER_FORMAT " = (" + COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT + ")" + " * " CALCULATED_NUMBER_FORMAT + " / " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->calculated_value + , rd->collected_value, rd->last_collected_value + , (calculated_number)rd->multiplier + , (calculated_number)rd->divisor + ); + break; + + case RRDDIM_PCENT_OVER_DIFF_TOTAL: + if(unlikely(rd->counter <= 1)) { + rd->calculated_value = 0; + continue; + } + + // if the new is smaller than the old (an overflow, or reset), set the old equal to the new + // to reset the calculation (it will give zero as the calculation for this second) + if(unlikely(rd->last_collected_value > rd->collected_value)) { + debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT + , st->name, rd->name + , rd->last_collected_value + , rd->collected_value); + if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET; + rd->last_collected_value = rd->collected_value; + } + + // the percentage of the current increment + // over the increment of all dimensions together + if(unlikely(st->collected_total == st->last_collected_total)) + rd->calculated_value = 0; + else + rd->calculated_value = + (calculated_number)100 + * (calculated_number)(rd->collected_value - rd->last_collected_value) + / (calculated_number)(st->collected_total - st->last_collected_total); + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF " + CALCULATED_NUMBER_FORMAT " = 100" + " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" + " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")" + , st->id, rd->name + , rd->calculated_value + , rd->collected_value, rd->last_collected_value + , st->collected_total, st->last_collected_total + ); + break; + + default: + // make the default zero, to make sure + // it gets noticed when we add new types + rd->calculated_value = 0; + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC " + CALCULATED_NUMBER_FORMAT " = 0" + , st->id, rd->name + , rd->calculated_value + ); + break; + } + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: PHASE2 " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + + } + + // at this point we have all the calculated values ready + // it is now time to interpolate values on a second boundary + + unsigned long long first_ut = last_ut; + long long iterations = (now_ut - last_ut) / (st->update_every * 1000000ULL); + if((now_ut % (st->update_every * 1000000ULL)) == 0) iterations++; + + for( ; likely(next_ut <= now_ut) ; next_ut += st->update_every * 1000000ULL, iterations-- ) { #ifdef NETDATA_INTERNAL_CHECKS - if(iterations < 0) { error("%s: iterations calculation wrapped! first_ut = %llu, last_ut = %llu, next_ut = %llu, now_ut = %llu", st->name, first_ut, last_ut, next_ut, now_ut); } + if(iterations < 0) { error("%s: iterations calculation wrapped! first_ut = %llu, last_ut = %llu, next_ut = %llu, now_ut = %llu", st->name, first_ut, last_ut, next_ut, now_ut); } #endif - if(unlikely(st->debug)) { - debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0); - debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_ut/1000000.0); - } - - st->last_updated.tv_sec = (time_t) (next_ut / 1000000ULL); - st->last_updated.tv_usec = 0; - - for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) { - calculated_number new_value; - - switch(rd->algorithm) { - case RRDDIM_INCREMENTAL: - new_value = (calculated_number) - ( rd->calculated_value - * (calculated_number)(next_ut - last_ut) - / (calculated_number)(now_ut - last_ut) - ); - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC2 INC " - CALCULATED_NUMBER_FORMAT " = " - CALCULATED_NUMBER_FORMAT - " * %llu" - " / %llu" - , st->id, rd->name - , new_value - , rd->calculated_value - , (next_ut - last_ut) - , (now_ut - last_ut) - ); - - rd->calculated_value -= new_value; - new_value += rd->last_calculated_value; - rd->last_calculated_value = 0; - new_value /= (calculated_number)st->update_every; - break; - - case RRDDIM_ABSOLUTE: - case RRDDIM_PCENT_OVER_ROW_TOTAL: - case RRDDIM_PCENT_OVER_DIFF_TOTAL: - default: - if(iterations == 1) { - // this is the last iteration - // do not interpolate - // just show the calculated value - - new_value = rd->calculated_value; - } - else { - // we have missed an update - // interpolate in the middle values - - new_value = (calculated_number) - ( ( (rd->calculated_value - rd->last_calculated_value) - * (calculated_number)(next_ut - first_ut) - / (calculated_number)(now_ut - first_ut) - ) - + rd->last_calculated_value - ); - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: CALC2 DEF " - CALCULATED_NUMBER_FORMAT " = (((" - "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")" - " * %llu" - " / %llu) + " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , new_value - , rd->calculated_value, rd->last_calculated_value - , (next_ut - first_ut) - , (now_ut - first_ut), rd->last_calculated_value - ); - - // this is wrong - // it fades the value towards the target - // while we know the calculated value is different - // if(likely(next_ut + st->update_every * 1000000ULL > now_ut)) rd->calculated_value = new_value; - } - break; - } - - if(unlikely(!store_this_entry)) { - store_this_entry = 1; - continue; - } - - if(likely(rd->updated && rd->counter > 1 && iterations < st->gap_when_lost_iterations_above)) { - rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags ); - - if(unlikely(st->debug)) - debug(D_RRD_STATS, "%s/%s: STORE[%ld] " - CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , st->current_entry - , unpack_storage_number(rd->values[st->current_entry]), new_value - ); - } - else { - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING " - , st->id, rd->name - , st->current_entry - ); - rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS); - } - - stored_entries++; - - if(unlikely(st->debug)) { - calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor; - calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]); - calculated_number accuracy = accuracy_loss(t1, t2); - debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)" - , st->id, rd->name - , st->current_entry - , t2 - , get_storage_number_flags(rd->values[st->current_entry]) - , t1 - , accuracy - , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" - ); - - rd->collected_volume += t1; - rd->stored_volume += t2; - accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume); - debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s" - , st->id, rd->name - , st->current_entry - , rd->stored_volume - , rd->collected_volume - , accuracy - , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" - ); - - } - } - // reset the storage flags for the next point, if any; - storage_flags = SN_EXISTS; - - st->counter++; - st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1; - last_ut = next_ut; - } - - // align next interpolation to last collection point - if(likely(stored_entries || !store_this_entry)) { - st->last_updated.tv_sec = st->last_collected_time.tv_sec; - st->last_updated.tv_usec = st->last_collected_time.tv_usec; - } - - for( rd = st->dimensions; likely(rd) ; rd = rd->next ) { - if(unlikely(!rd->updated)) continue; - - if(likely(stored_entries || !store_this_entry)) { - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_collected_value, rd->collected_value); - rd->last_collected_value = rd->collected_value; - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value, rd->calculated_value); - rd->last_calculated_value = rd->calculated_value; - } - - rd->calculated_value = 0; - rd->collected_value = 0; - rd->updated = 0; - - if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: END " - " last_collected_value = " COLLECTED_NUMBER_FORMAT - " collected_value = " COLLECTED_NUMBER_FORMAT - " last_calculated_value = " CALCULATED_NUMBER_FORMAT - " calculated_value = " CALCULATED_NUMBER_FORMAT - , st->id, rd->name - , rd->last_collected_value - , rd->collected_value - , rd->last_calculated_value - , rd->calculated_value - ); - } - st->last_collected_total = st->collected_total; - - // ALL DONE ABOUT THE DATA UPDATE - // -------------------------------------------------------------------- - - // find if there are any obsolete dimensions (not updated recently) - if(unlikely(rrd_delete_unupdated_dimensions)) { - - for( rd = st->dimensions; likely(rd) ; rd = rd->next ) - if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec) - break; - - if(unlikely(rd)) { - // there is dimension to free - // upgrade our read lock to a write lock - pthread_rwlock_unlock(&st->rwlock); - pthread_rwlock_wrlock(&st->rwlock); - - for( rd = st->dimensions, last = NULL ; likely(rd) ; ) { - // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds - - if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) { - info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id); - - if(unlikely(!last)) { - st->dimensions = rd->next; - rd->next = NULL; - rrddim_free(st, rd); - rd = st->dimensions; - continue; - } - else { - last->next = rd->next; - rd->next = NULL; - rrddim_free(st, rd); - rd = last->next; - continue; - } - } - - last = rd; - rd = rd->next; - } - - if(unlikely(!st->dimensions)) { - info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id); - st->enabled = 0; - } - } - } - - pthread_rwlock_unlock(&st->rwlock); - - if(unlikely(pthread_setcancelstate(oldstate, NULL) != 0)) - error("Cannot set pthread cancel state to RESTORE (%d).", oldstate); - - return(st->usec_since_last_update); + if(unlikely(st->debug)) { + debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0); + debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_ut/1000000.0); + } + + st->last_updated.tv_sec = (time_t) (next_ut / 1000000ULL); + st->last_updated.tv_usec = 0; + + for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) { + calculated_number new_value; + + switch(rd->algorithm) { + case RRDDIM_INCREMENTAL: + new_value = (calculated_number) + ( rd->calculated_value + * (calculated_number)(next_ut - last_ut) + / (calculated_number)(now_ut - last_ut) + ); + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC2 INC " + CALCULATED_NUMBER_FORMAT " = " + CALCULATED_NUMBER_FORMAT + " * %llu" + " / %llu" + , st->id, rd->name + , new_value + , rd->calculated_value + , (next_ut - last_ut) + , (now_ut - last_ut) + ); + + rd->calculated_value -= new_value; + new_value += rd->last_calculated_value; + rd->last_calculated_value = 0; + new_value /= (calculated_number)st->update_every; + break; + + case RRDDIM_ABSOLUTE: + case RRDDIM_PCENT_OVER_ROW_TOTAL: + case RRDDIM_PCENT_OVER_DIFF_TOTAL: + default: + if(iterations == 1) { + // this is the last iteration + // do not interpolate + // just show the calculated value + + new_value = rd->calculated_value; + } + else { + // we have missed an update + // interpolate in the middle values + + new_value = (calculated_number) + ( ( (rd->calculated_value - rd->last_calculated_value) + * (calculated_number)(next_ut - first_ut) + / (calculated_number)(now_ut - first_ut) + ) + + rd->last_calculated_value + ); + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: CALC2 DEF " + CALCULATED_NUMBER_FORMAT " = (((" + "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")" + " * %llu" + " / %llu) + " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , new_value + , rd->calculated_value, rd->last_calculated_value + , (next_ut - first_ut) + , (now_ut - first_ut), rd->last_calculated_value + ); + + // this is wrong + // it fades the value towards the target + // while we know the calculated value is different + // if(likely(next_ut + st->update_every * 1000000ULL > now_ut)) rd->calculated_value = new_value; + } + break; + } + + if(unlikely(!store_this_entry)) { + // store_this_entry = 1; + continue; + } + + if(likely(rd->updated && rd->counter > 1 && iterations < st->gap_when_lost_iterations_above)) { + rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags ); + rd->last_stored_value = new_value; + + if(unlikely(st->debug)) + debug(D_RRD_STATS, "%s/%s: STORE[%ld] " + CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , st->current_entry + , unpack_storage_number(rd->values[st->current_entry]), new_value + ); + } + else { + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING " + , st->id, rd->name + , st->current_entry + ); + rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS); + rd->last_stored_value = NAN; + } + + stored_entries++; + + if(unlikely(st->debug)) { + calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor; + calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]); + calculated_number accuracy = accuracy_loss(t1, t2); + debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)" + , st->id, rd->name + , st->current_entry + , t2 + , get_storage_number_flags(rd->values[st->current_entry]) + , t1 + , accuracy + , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" + ); + + rd->collected_volume += t1; + rd->stored_volume += t2; + accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume); + debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s" + , st->id, rd->name + , st->current_entry + , rd->stored_volume + , rd->collected_volume + , accuracy + , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : "" + ); + + } + } + // reset the storage flags for the next point, if any; + storage_flags = SN_EXISTS; + + st->counter++; + st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1; + last_ut = next_ut; + } + + // align next interpolation to last collection point + if(likely(stored_entries || !store_this_entry)) { + st->last_updated.tv_sec = st->last_collected_time.tv_sec; + st->last_updated.tv_usec = st->last_collected_time.tv_usec; + st->last_collected_total = st->collected_total; + } + + for( rd = st->dimensions; likely(rd) ; rd = rd->next ) { + if(unlikely(!rd->updated)) continue; + + if(likely(stored_entries || !store_this_entry)) { + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_collected_value, rd->collected_value); + rd->last_collected_value = rd->collected_value; + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value, rd->calculated_value); + rd->last_calculated_value = rd->calculated_value; + } + + rd->calculated_value = 0; + rd->collected_value = 0; + rd->updated = 0; + + if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: END " + " last_collected_value = " COLLECTED_NUMBER_FORMAT + " collected_value = " COLLECTED_NUMBER_FORMAT + " last_calculated_value = " CALCULATED_NUMBER_FORMAT + " calculated_value = " CALCULATED_NUMBER_FORMAT + , st->id, rd->name + , rd->last_collected_value + , rd->collected_value + , rd->last_calculated_value + , rd->calculated_value + ); + } + + // ALL DONE ABOUT THE DATA UPDATE + // -------------------------------------------------------------------- + + // find if there are any obsolete dimensions (not updated recently) + if(unlikely(rrd_delete_unupdated_dimensions)) { + + for( rd = st->dimensions; likely(rd) ; rd = rd->next ) + if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec) + break; + + if(unlikely(rd)) { + // there is dimension to free + // upgrade our read lock to a write lock + pthread_rwlock_unlock(&st->rwlock); + pthread_rwlock_wrlock(&st->rwlock); + + for( rd = st->dimensions, last = NULL ; likely(rd) ; ) { + // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds + + if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) { + info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id); + + if(unlikely(!last)) { + st->dimensions = rd->next; + rd->next = NULL; + rrddim_free(st, rd); + rd = st->dimensions; + continue; + } + else { + last->next = rd->next; + rd->next = NULL; + rrddim_free(st, rd); + rd = last->next; + continue; + } + } + + last = rd; + rd = rd->next; + } + + if(unlikely(!st->dimensions)) { + info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id); + st->enabled = 0; + } + } + } + + pthread_rwlock_unlock(&st->rwlock); + + if(unlikely(pthread_setcancelstate(oldstate, NULL) != 0)) + error("Cannot set pthread cancel state to RESTORE (%d).", oldstate); + + return(st->usec_since_last_update); } |