summaryrefslogtreecommitdiffstats
path: root/src/rrd.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/rrd.h')
-rw-r--r--src/rrd.h747
1 files changed, 0 insertions, 747 deletions
diff --git a/src/rrd.h b/src/rrd.h
deleted file mode 100644
index d17daacd2..000000000
--- a/src/rrd.h
+++ /dev/null
@@ -1,747 +0,0 @@
-#ifndef NETDATA_RRD_H
-#define NETDATA_RRD_H 1
-
-#define UPDATE_EVERY 1
-#define UPDATE_EVERY_MAX 3600
-
-#define RRD_DEFAULT_HISTORY_ENTRIES 3600
-#define RRD_HISTORY_ENTRIES_MAX (86400*365)
-
-extern int default_rrd_update_every;
-extern int default_rrd_history_entries;
-extern int gap_when_lost_iterations_above;
-
-#define RRD_ID_LENGTH_MAX 200
-
-#define RRDSET_MAGIC "NETDATA RRD SET FILE V019"
-#define RRDDIMENSION_MAGIC "NETDATA RRD DIMENSION FILE V019"
-
-typedef long long total_number;
-#define TOTAL_NUMBER_FORMAT "%lld"
-
-typedef struct rrdhost RRDHOST;
-
-// ----------------------------------------------------------------------------
-// chart types
-
-typedef enum rrdset_type {
- RRDSET_TYPE_LINE = 0,
- RRDSET_TYPE_AREA = 1,
- RRDSET_TYPE_STACKED = 2
-} RRDSET_TYPE;
-
-#define RRDSET_TYPE_LINE_NAME "line"
-#define RRDSET_TYPE_AREA_NAME "area"
-#define RRDSET_TYPE_STACKED_NAME "stacked"
-
-RRDSET_TYPE rrdset_type_id(const char *name);
-const char *rrdset_type_name(RRDSET_TYPE chart_type);
-
-
-// ----------------------------------------------------------------------------
-// memory mode
-
-typedef enum rrd_memory_mode {
- RRD_MEMORY_MODE_NONE = 0,
- RRD_MEMORY_MODE_RAM = 1,
- RRD_MEMORY_MODE_MAP = 2,
- RRD_MEMORY_MODE_SAVE = 3,
- RRD_MEMORY_MODE_ALLOC = 4
-} RRD_MEMORY_MODE;
-
-#define RRD_MEMORY_MODE_NONE_NAME "none"
-#define RRD_MEMORY_MODE_RAM_NAME "ram"
-#define RRD_MEMORY_MODE_MAP_NAME "map"
-#define RRD_MEMORY_MODE_SAVE_NAME "save"
-#define RRD_MEMORY_MODE_ALLOC_NAME "alloc"
-
-extern RRD_MEMORY_MODE default_rrd_memory_mode;
-
-extern const char *rrd_memory_mode_name(RRD_MEMORY_MODE id);
-extern RRD_MEMORY_MODE rrd_memory_mode_id(const char *name);
-
-
-// ----------------------------------------------------------------------------
-// algorithms types
-
-typedef enum rrd_algorithm {
- RRD_ALGORITHM_ABSOLUTE = 0,
- RRD_ALGORITHM_INCREMENTAL = 1,
- RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL = 2,
- RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL = 3
-} RRD_ALGORITHM;
-
-#define RRD_ALGORITHM_ABSOLUTE_NAME "absolute"
-#define RRD_ALGORITHM_INCREMENTAL_NAME "incremental"
-#define RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL_NAME "percentage-of-incremental-row"
-#define RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL_NAME "percentage-of-absolute-row"
-
-extern RRD_ALGORITHM rrd_algorithm_id(const char *name);
-extern const char *rrd_algorithm_name(RRD_ALGORITHM algorithm);
-
-// ----------------------------------------------------------------------------
-// RRD FAMILY
-
-struct rrdfamily {
- avl avl;
-
- const char *family;
- uint32_t hash_family;
-
- size_t use_count;
-
- avl_tree_lock rrdvar_root_index;
-};
-typedef struct rrdfamily RRDFAMILY;
-
-
-// ----------------------------------------------------------------------------
-// flags
-// use this for configuration flags, not for state control
-// flags are set/unset in a manner that is not thread safe
-// and may lead to missing information.
-
-typedef enum rrddim_flags {
- RRDDIM_FLAG_NONE = 0,
- RRDDIM_FLAG_HIDDEN = 1 << 0, // this dimension will not be offered to callers
- RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS = 1 << 1 // do not offer RESET or OVERFLOW info to callers
-} RRDDIM_FLAGS;
-
-#ifdef HAVE_C___ATOMIC
-#define rrddim_flag_check(rd, flag) (__atomic_load_n(&((rd)->flags), __ATOMIC_SEQ_CST) & (flag))
-#define rrddim_flag_set(rd, flag) __atomic_or_fetch(&((rd)->flags), (flag), __ATOMIC_SEQ_CST)
-#define rrddim_flag_clear(rd, flag) __atomic_and_fetch(&((rd)->flags), ~(flag), __ATOMIC_SEQ_CST)
-#else
-#define rrddim_flag_check(rd, flag) ((rd)->flags & (flag))
-#define rrddim_flag_set(rd, flag) (rd)->flags |= (flag)
-#define rrddim_flag_clear(rd, flag) (rd)->flags &= ~(flag)
-#endif
-
-
-// ----------------------------------------------------------------------------
-// RRD DIMENSION - this is a metric
-
-struct rrddim {
- // ------------------------------------------------------------------------
- // binary indexing structures
-
- avl avl; // the binary index - this has to be first member!
-
- // ------------------------------------------------------------------------
- // the dimension definition
-
- const char *id; // the id of this dimension (for internal identification)
- const char *name; // the name of this dimension (as presented to user)
- // this is a pointer to the config structure
- // since the config always has a higher priority
- // (the user overwrites the name of the charts)
- // DO NOT FREE THIS - IT IS ALLOCATED IN CONFIG
-
- RRD_ALGORITHM algorithm; // the algorithm that is applied to add new collected values
- RRD_MEMORY_MODE rrd_memory_mode; // the memory mode for this dimension
-
- collected_number multiplier; // the multiplier of the collected values
- collected_number divisor; // the divider of the collected values
-
- uint32_t flags; // configuration flags for the dimension
-
- // ------------------------------------------------------------------------
- // members for temporary data we need for calculations
-
- uint32_t hash; // a simple hash of the id, to speed up searching / indexing
- // instead of strcmp() every item in the binary index
- // we first compare the hashes
-
- uint32_t hash_name; // a simple hash of the name
-
- char *cache_filename; // the filename we load/save from/to this set
-
- size_t collections_counter; // the number of times we added values to this rrdim
- size_t unused[10];
-
- int updated:1; // 1 when the dimension has been updated since the last processing
- int exposed:1; // 1 when set what have sent this dimension to the central netdata
-
- struct timeval last_collected_time; // when was this dimension last updated
- // this is actual date time we updated the last_collected_value
- // THIS IS DIFFERENT FROM THE SAME MEMBER OF RRDSET
-
- calculated_number calculated_value; // the current calculated value, after applying the algorithm - resets to zero after being used
- calculated_number last_calculated_value; // the last calculated value processed
-
- calculated_number last_stored_value; // the last value as stored in the database (after interpolation)
-
- collected_number collected_value; // the current value, as collected - resets to 0 after being used
- collected_number last_collected_value; // the last value that was collected, after being processed
-
- // the *_volume members are used to calculate the accuracy of the rounding done by the
- // storage number - they are printed to debug.log when debug is enabled for a set.
- calculated_number collected_volume; // the sum of all collected values so far
- calculated_number stored_volume; // the sum of all stored values so far
-
- struct rrddim *next; // linking of dimensions within the same data set
- struct rrdset *rrdset;
-
- // ------------------------------------------------------------------------
- // members for checking the data when loading from disk
-
- long entries; // how many entries this dimension has in ram
- // this is the same to the entries of the data set
- // we set it here, to check the data when we load it from disk.
-
- int update_every; // every how many seconds is this updated
-
- size_t memsize; // the memory allocated for this dimension
-
- char magic[sizeof(RRDDIMENSION_MAGIC) + 1]; // a string to be saved, used to identify our data file
-
- struct rrddimvar *variables;
-
- // ------------------------------------------------------------------------
- // the values stored in this dimension, using our floating point numbers
-
- storage_number values[]; // the array of values - THIS HAS TO BE THE LAST MEMBER
-};
-typedef struct rrddim RRDDIM;
-
-// ----------------------------------------------------------------------------
-// these loop macros make sure the linked list is accessed with the right lock
-
-#define rrddim_foreach_read(rd, st) \
- for((rd) = (st)->dimensions, rrdset_check_rdlock(st); (rd) ; (rd) = (rd)->next)
-
-#define rrddim_foreach_write(rd, st) \
- for((rd) = (st)->dimensions, rrdset_check_wrlock(st); (rd) ; (rd) = (rd)->next)
-
-
-// ----------------------------------------------------------------------------
-// RRDSET - this is a chart
-
-// use this for configuration flags, not for state control
-// flags are set/unset in a manner that is not thread safe
-// and may lead to missing information.
-
-typedef enum rrdset_flags {
- RRDSET_FLAG_ENABLED = 1 << 0, // enables or disables a chart
- RRDSET_FLAG_DETAIL = 1 << 1, // if set, the data set should be considered as a detail of another
- // (the master data set should be the one that has the same family and is not detail)
- RRDSET_FLAG_DEBUG = 1 << 2, // enables or disables debugging for a chart
- RRDSET_FLAG_OBSOLETE = 1 << 3, // this is marked by the collector/module as obsolete
- RRDSET_FLAG_BACKEND_SEND = 1 << 4, // if set, this chart should be sent to backends
- RRDSET_FLAG_BACKEND_IGNORE = 1 << 5, // if set, this chart should not be sent to backends
- RRDSET_FLAG_EXPOSED_UPSTREAM = 1 << 6, // if set, we have sent this chart to netdata master (streaming)
- RRDSET_FLAG_STORE_FIRST = 1 << 7, // if set, do not eliminate the first collection during interpolation
- RRDSET_FLAG_HETEROGENEOUS = 1 << 8, // if set, the chart is not homogeneous (dimensions in it have multiple algorithms, multipliers or dividers)
- RRDSET_FLAG_HOMEGENEOUS_CHECK= 1 << 9, // if set, the chart should be checked to determine if the dimensions as homogeneous
- RRDSET_FLAG_HIDDEN = 1 << 10, // if set, do not show this chart on the dashboard, but use it for backends
-} RRDSET_FLAGS;
-
-#ifdef HAVE_C___ATOMIC
-#define rrdset_flag_check(st, flag) (__atomic_load_n(&((st)->flags), __ATOMIC_SEQ_CST) & (flag))
-#define rrdset_flag_set(st, flag) __atomic_or_fetch(&((st)->flags), flag, __ATOMIC_SEQ_CST)
-#define rrdset_flag_clear(st, flag) __atomic_and_fetch(&((st)->flags), ~flag, __ATOMIC_SEQ_CST)
-#else
-#define rrdset_flag_check(st, flag) ((st)->flags & (flag))
-#define rrdset_flag_set(st, flag) (st)->flags |= (flag)
-#define rrdset_flag_clear(st, flag) (st)->flags &= ~(flag)
-#endif
-
-struct rrdset {
- // ------------------------------------------------------------------------
- // binary indexing structures
-
- avl avl; // the index, with key the id - this has to be first!
- avl avlname; // the index, with key the name
-
- // ------------------------------------------------------------------------
- // the set configuration
-
- char id[RRD_ID_LENGTH_MAX + 1]; // id of the data set
-
- const char *name; // the name of this dimension (as presented to user)
- // this is a pointer to the config structure
- // since the config always has a higher priority
- // (the user overwrites the name of the charts)
-
- char *config_section; // the config section for the chart
-
- char *type; // the type of graph RRD_TYPE_* (a category, for determining graphing options)
- char *family; // grouping sets under the same family
- char *title; // title shown to user
- char *units; // units of measurement
-
- char *context; // the template of this data set
- uint32_t hash_context; // the hash of the chart's context
-
- RRDSET_TYPE chart_type; // line, area, stacked
-
- int update_every; // every how many seconds is this updated?
-
- long entries; // total number of entries in the data set
-
- long current_entry; // the entry that is currently being updated
- // it goes around in a round-robin fashion
-
- uint32_t flags; // configuration flags
-
- int gap_when_lost_iterations_above; // after how many lost iterations a gap should be stored
- // netdata will interpolate values for gaps lower than this
-
- long priority; // the sorting priority of this chart
-
-
- // ------------------------------------------------------------------------
- // members for temporary data we need for calculations
-
- RRD_MEMORY_MODE rrd_memory_mode; // if set to 1, this is memory mapped
-
- char *cache_dir; // the directory to store dimensions
- char cache_filename[FILENAME_MAX+1]; // the filename to store this set
-
- netdata_rwlock_t rrdset_rwlock; // protects dimensions linked list
-
- size_t counter; // the number of times we added values to this database
- size_t counter_done; // the number of times rrdset_done() has been called
-
- time_t last_accessed_time; // the last time this RRDSET has been accessed
- time_t upstream_resync_time; // the timestamp up to which we should resync clock upstream
-
- char *plugin_name; // the name of the plugin that generated this
- char *module_name; // the name of the plugin module that generated this
-
- size_t unused[6];
-
- uint32_t hash; // a simple hash on the id, to speed up searching
- // we first compare hashes, and only if the hashes are equal we do string comparisons
-
- uint32_t hash_name; // a simple hash on the name
-
- usec_t usec_since_last_update; // the time in microseconds since the last collection of data
-
- struct timeval last_updated; // when this data set was last updated (updated every time the rrd_stats_done() function)
- struct timeval last_collected_time; // when did this data set last collected values
-
- total_number collected_total; // used internally to calculate percentages
- total_number last_collected_total; // used internally to calculate percentages
-
- RRDFAMILY *rrdfamily; // pointer to RRDFAMILY this chart belongs to
- RRDHOST *rrdhost; // pointer to RRDHOST this chart belongs to
-
- struct rrdset *next; // linking of rrdsets
-
- // ------------------------------------------------------------------------
- // local variables
-
- calculated_number green; // green threshold for this chart
- calculated_number red; // red threshold for this chart
-
- avl_tree_lock rrdvar_root_index; // RRDVAR index for this chart
- RRDSETVAR *variables; // RRDSETVAR linked list for this chart (one RRDSETVAR, many RRDVARs)
- RRDCALC *alarms; // RRDCALC linked list for this chart
-
- // ------------------------------------------------------------------------
- // members for checking the data when loading from disk
-
- unsigned long memsize; // how much mem we have allocated for this (without dimensions)
-
- char magic[sizeof(RRDSET_MAGIC) + 1]; // our magic
-
- // ------------------------------------------------------------------------
- // the dimensions
-
- avl_tree_lock dimensions_index; // the root of the dimensions index
- RRDDIM *dimensions; // the actual data for every dimension
-
-};
-typedef struct rrdset RRDSET;
-
-#define rrdset_rdlock(st) netdata_rwlock_rdlock(&((st)->rrdset_rwlock))
-#define rrdset_wrlock(st) netdata_rwlock_wrlock(&((st)->rrdset_rwlock))
-#define rrdset_unlock(st) netdata_rwlock_unlock(&((st)->rrdset_rwlock))
-
-
-// ----------------------------------------------------------------------------
-// these loop macros make sure the linked list is accessed with the right lock
-
-#define rrdset_foreach_read(st, host) \
- for((st) = (host)->rrdset_root, rrdhost_check_rdlock(host); st ; (st) = (st)->next)
-
-#define rrdset_foreach_write(st, host) \
- for((st) = (host)->rrdset_root, rrdhost_check_wrlock(host); st ; (st) = (st)->next)
-
-
-// ----------------------------------------------------------------------------
-// RRDHOST flags
-// use this for configuration flags, not for state control
-// flags are set/unset in a manner that is not thread safe
-// and may lead to missing information.
-
-typedef enum rrdhost_flags {
- RRDHOST_FLAG_ORPHAN = 1 << 0, // this host is orphan (not receiving data)
- RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS = 1 << 1, // delete files of obsolete charts
- RRDHOST_FLAG_DELETE_ORPHAN_HOST = 1 << 2, // delete the entire host when orphan
- RRDHOST_FLAG_BACKEND_SEND = 1 << 3, // send it to backends
- RRDHOST_FLAG_BACKEND_DONT_SEND = 1 << 4, // don't send it to backends
-} RRDHOST_FLAGS;
-
-#ifdef HAVE_C___ATOMIC
-#define rrdhost_flag_check(host, flag) (__atomic_load_n(&((host)->flags), __ATOMIC_SEQ_CST) & (flag))
-#define rrdhost_flag_set(host, flag) __atomic_or_fetch(&((host)->flags), flag, __ATOMIC_SEQ_CST)
-#define rrdhost_flag_clear(host, flag) __atomic_and_fetch(&((host)->flags), ~flag, __ATOMIC_SEQ_CST)
-#else
-#define rrdhost_flag_check(host, flag) ((host)->flags & (flag))
-#define rrdhost_flag_set(host, flag) (host)->flags |= (flag)
-#define rrdhost_flag_clear(host, flag) (host)->flags &= ~(flag)
-#endif
-
-#ifdef NETDATA_INTERNAL_CHECKS
-#define rrdset_debug(st, fmt, args...) do { if(unlikely(debug_flags & D_RRD_STATS && rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) \
- debug_int(__FILE__, __FUNCTION__, __LINE__, "%s: " fmt, st->name, ##args); } while(0)
-#else
-#define rrdset_debug(st, fmt, args...) debug_dummy()
-#endif
-
-
-// ----------------------------------------------------------------------------
-// RRD HOST
-
-struct rrdhost {
- avl avl; // the index of hosts
-
- // ------------------------------------------------------------------------
- // host information
-
- char *hostname; // the hostname of this host
- uint32_t hash_hostname; // the hostname hash
-
- char *registry_hostname; // the registry hostname for this host
-
- char machine_guid[GUID_LEN + 1]; // the unique ID of this host
- uint32_t hash_machine_guid; // the hash of the unique ID
-
- const char *os; // the O/S type of the host
- const char *tags; // tags for this host
- const char *timezone; // the timezone of the host
-
- uint32_t flags; // flags about this RRDHOST
-
- int rrd_update_every; // the update frequency of the host
- long rrd_history_entries; // the number of history entries for the host's charts
- RRD_MEMORY_MODE rrd_memory_mode; // the memory more for the charts of this host
-
- char *cache_dir; // the directory to save RRD cache files
- char *varlib_dir; // the directory to save health log
-
- char *program_name; // the program name that collects metrics for this host
- char *program_version; // the program version that collects metrics for this host
-
- // ------------------------------------------------------------------------
- // streaming of data to remote hosts - rrdpush
-
- int rrdpush_send_enabled:1; // 1 when this host sends metrics to another netdata
- char *rrdpush_send_destination; // where to send metrics to
- char *rrdpush_send_api_key; // the api key at the receiving netdata
-
- // the following are state information for the threading
- // streaming metrics from this netdata to an upstream netdata
- volatile int rrdpush_sender_spawn:1; // 1 when the sender thread has been spawn
- netdata_thread_t rrdpush_sender_thread; // the sender thread
-
- volatile int rrdpush_sender_connected:1; // 1 when the sender is ready to push metrics
- int rrdpush_sender_socket; // the fd of the socket to the remote host, or -1
-
- volatile int rrdpush_sender_error_shown:1; // 1 when we have logged a communication error
- volatile int rrdpush_sender_join:1; // 1 when we have to join the sending thread
-
- // metrics may be collected asynchronously
- // these synchronize all the threads willing the write to our sending buffer
- netdata_mutex_t rrdpush_sender_buffer_mutex; // exclusive access to rrdpush_sender_buffer
- int rrdpush_sender_pipe[2]; // collector to sender thread signaling
- BUFFER *rrdpush_sender_buffer; // collector fills it, sender sends it
-
-
- // ------------------------------------------------------------------------
- // streaming of data from remote hosts - rrdpush
-
- volatile size_t connected_senders; // when remote hosts are streaming to this
- // host, this is the counter of connected clients
-
- time_t senders_disconnected_time; // the time the last sender was disconnected
-
- // ------------------------------------------------------------------------
- // health monitoring options
-
- int health_enabled:1; // 1 when this host has health enabled
- time_t health_delay_up_to; // a timestamp to delay alarms processing up to
- char *health_default_exec; // the full path of the alarms notifications program
- char *health_default_recipient; // the default recipient for all alarms
- char *health_log_filename; // the alarms event log filename
- size_t health_log_entries_written; // the number of alarm events writtern to the alarms event log
- FILE *health_log_fp; // the FILE pointer to the open alarms event log file
-
- // all RRDCALCs are primarily allocated and linked here
- // RRDCALCs may be linked to charts at any point
- // (charts may or may not exist when these are loaded)
- RRDCALC *alarms;
-
- ALARM_LOG health_log; // alarms historical events (event log)
- uint32_t health_last_processed_id; // the last processed health id from the log
- uint32_t health_max_unique_id; // the max alarm log unique id given for the host
- uint32_t health_max_alarm_id; // the max alarm id given for the host
-
- // templates of alarms
- // these are used to create alarms when charts
- // are created or renamed, that match them
- RRDCALCTEMPLATE *templates;
-
-
- // ------------------------------------------------------------------------
- // the charts of the host
-
- RRDSET *rrdset_root; // the host charts
-
-
- // ------------------------------------------------------------------------
- // locks
-
- netdata_rwlock_t rrdhost_rwlock; // lock for this RRDHOST (protects rrdset_root linked list)
-
- // ------------------------------------------------------------------------
- // indexes
-
- avl_tree_lock rrdset_root_index; // the host's charts index (by id)
- avl_tree_lock rrdset_root_index_name; // the host's charts index (by name)
-
- avl_tree_lock rrdfamily_root_index; // the host's chart families index
- avl_tree_lock rrdvar_root_index; // the host's chart variables index
-
- struct rrdhost *next;
-};
-extern RRDHOST *localhost;
-
-#define rrdhost_rdlock(host) netdata_rwlock_rdlock(&((host)->rrdhost_rwlock))
-#define rrdhost_wrlock(host) netdata_rwlock_wrlock(&((host)->rrdhost_rwlock))
-#define rrdhost_unlock(host) netdata_rwlock_unlock(&((host)->rrdhost_rwlock))
-
-// ----------------------------------------------------------------------------
-// these loop macros make sure the linked list is accessed with the right lock
-
-#define rrdhost_foreach_read(var) \
- for((var) = localhost, rrd_check_rdlock(); var ; (var) = (var)->next)
-
-#define rrdhost_foreach_write(var) \
- for((var) = localhost, rrd_check_wrlock(); var ; (var) = (var)->next)
-
-
-// ----------------------------------------------------------------------------
-// global lock for all RRDHOSTs
-
-extern netdata_rwlock_t rrd_rwlock;
-
-#define rrd_rdlock() netdata_rwlock_rdlock(&rrd_rwlock)
-#define rrd_wrlock() netdata_rwlock_wrlock(&rrd_rwlock)
-#define rrd_unlock() netdata_rwlock_unlock(&rrd_rwlock)
-
-// ----------------------------------------------------------------------------
-
-extern size_t rrd_hosts_available;
-extern time_t rrdhost_free_orphan_time;
-
-extern void rrd_init(char *hostname);
-
-extern RRDHOST *rrdhost_find_by_hostname(const char *hostname, uint32_t hash);
-extern RRDHOST *rrdhost_find_by_guid(const char *guid, uint32_t hash);
-
-extern RRDHOST *rrdhost_find_or_create(
- const char *hostname
- , const char *registry_hostname
- , const char *guid
- , const char *os
- , const char *timezone
- , const char *tags
- , const char *program_name
- , const char *program_version
- , int update_every
- , long history
- , RRD_MEMORY_MODE mode
- , int health_enabled
- , int rrdpush_enabled
- , char *rrdpush_destination
- , char *rrdpush_api_key
-);
-
-#if defined(NETDATA_INTERNAL_CHECKS) && defined(NETDATA_VERIFY_LOCKS)
-extern void __rrdhost_check_wrlock(RRDHOST *host, const char *file, const char *function, const unsigned long line);
-extern void __rrdhost_check_rdlock(RRDHOST *host, const char *file, const char *function, const unsigned long line);
-extern void __rrdset_check_rdlock(RRDSET *st, const char *file, const char *function, const unsigned long line);
-extern void __rrdset_check_wrlock(RRDSET *st, const char *file, const char *function, const unsigned long line);
-extern void __rrd_check_rdlock(const char *file, const char *function, const unsigned long line);
-extern void __rrd_check_wrlock(const char *file, const char *function, const unsigned long line);
-
-#define rrdhost_check_rdlock(host) __rrdhost_check_rdlock(host, __FILE__, __FUNCTION__, __LINE__)
-#define rrdhost_check_wrlock(host) __rrdhost_check_wrlock(host, __FILE__, __FUNCTION__, __LINE__)
-#define rrdset_check_rdlock(st) __rrdset_check_rdlock(st, __FILE__, __FUNCTION__, __LINE__)
-#define rrdset_check_wrlock(st) __rrdset_check_wrlock(st, __FILE__, __FUNCTION__, __LINE__)
-#define rrd_check_rdlock() __rrd_check_rdlock(__FILE__, __FUNCTION__, __LINE__)
-#define rrd_check_wrlock() __rrd_check_wrlock(__FILE__, __FUNCTION__, __LINE__)
-
-#else
-#define rrdhost_check_rdlock(host) (void)0
-#define rrdhost_check_wrlock(host) (void)0
-#define rrdset_check_rdlock(st) (void)0
-#define rrdset_check_wrlock(st) (void)0
-#define rrd_check_rdlock() (void)0
-#define rrd_check_wrlock() (void)0
-#endif
-
-// ----------------------------------------------------------------------------
-// RRDSET functions
-
-extern int rrdset_set_name(RRDSET *st, const char *name);
-
-extern RRDSET *rrdset_create_custom(RRDHOST *host
- , const char *type
- , const char *id
- , const char *name
- , const char *family
- , const char *context
- , const char *title
- , const char *units
- , const char *plugin
- , const char *module
- , long priority
- , int update_every
- , RRDSET_TYPE chart_type
- , RRD_MEMORY_MODE memory_mode
- , long history_entries);
-
-#define rrdset_create(host, type, id, name, family, context, title, units, plugin, module, priority, update_every, chart_type) \
- rrdset_create_custom(host, type, id, name, family, context, title, units, plugin, module, priority, update_every, chart_type, (host)->rrd_memory_mode, (host)->rrd_history_entries)
-
-#define rrdset_create_localhost(type, id, name, family, context, title, units, plugin, module, priority, update_every, chart_type) \
- rrdset_create(localhost, type, id, name, family, context, title, units, plugin, module, priority, update_every, chart_type)
-
-extern void rrdhost_free_all(void);
-extern void rrdhost_save_all(void);
-extern void rrdhost_cleanup_all(void);
-
-extern void rrdhost_cleanup_orphan_hosts_nolock(RRDHOST *protected);
-extern void rrdhost_free(RRDHOST *host);
-extern void rrdhost_save_charts(RRDHOST *host);
-extern void rrdhost_delete_charts(RRDHOST *host);
-
-extern int rrdhost_should_be_removed(RRDHOST *host, RRDHOST *protected, time_t now);
-
-extern void rrdset_update_heterogeneous_flag(RRDSET *st);
-
-extern RRDSET *rrdset_find(RRDHOST *host, const char *id);
-#define rrdset_find_localhost(id) rrdset_find(localhost, id)
-
-extern RRDSET *rrdset_find_bytype(RRDHOST *host, const char *type, const char *id);
-#define rrdset_find_bytype_localhost(type, id) rrdset_find_bytype(localhost, type, id)
-
-extern RRDSET *rrdset_find_byname(RRDHOST *host, const char *name);
-#define rrdset_find_byname_localhost(name) rrdset_find_byname(localhost, name)
-
-extern void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds);
-extern void rrdset_next_usec(RRDSET *st, usec_t microseconds);
-#define rrdset_next(st) rrdset_next_usec(st, 0ULL)
-
-extern void rrdset_done(RRDSET *st);
-
-extern void rrdset_is_obsolete(RRDSET *st);
-extern void rrdset_isnot_obsolete(RRDSET *st);
-
-// checks if the RRDSET should be offered to viewers
-#define rrdset_is_available_for_viewers(st) (rrdset_flag_check(st, RRDSET_FLAG_ENABLED) && !rrdset_flag_check(st, RRDSET_FLAG_HIDDEN) && !rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE) && (st)->dimensions && (st)->rrd_memory_mode != RRD_MEMORY_MODE_NONE)
-#define rrdset_is_available_for_backends(st) (rrdset_flag_check(st, RRDSET_FLAG_ENABLED) && !rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE) && (st)->dimensions)
-
-// get the total duration in seconds of the round robin database
-#define rrdset_duration(st) ((time_t)( (((st)->counter >= ((unsigned long)(st)->entries))?(unsigned long)(st)->entries:(st)->counter) * (st)->update_every ))
-
-// get the timestamp of the last entry in the round robin database
-#define rrdset_last_entry_t(st) ((time_t)(((st)->last_updated.tv_sec)))
-
-// get the timestamp of first entry in the round robin database
-#define rrdset_first_entry_t(st) ((time_t)(rrdset_last_entry_t(st) - rrdset_duration(st)))
-
-// get the last slot updated in the round robin database
-#define rrdset_last_slot(st) ((unsigned long)(((st)->current_entry == 0) ? (st)->entries - 1 : (st)->current_entry - 1))
-
-// get the first / oldest slot updated in the round robin database
-#define rrdset_first_slot(st) ((unsigned long)( (((st)->counter >= ((unsigned long)(st)->entries)) ? (unsigned long)( ((unsigned long)(st)->current_entry > 0) ? ((unsigned long)(st)->current_entry) : ((unsigned long)(st)->entries) ) - 1 : 0) ))
-
-// get the slot of the round robin database, for the given timestamp (t)
-// it always returns a valid slot, although may not be for the time requested if the time is outside the round robin database
-#define rrdset_time2slot(st, t) ( \
- ( (time_t)(t) >= rrdset_last_entry_t(st)) ? ( rrdset_last_slot(st) ) : \
- ( ((time_t)(t) <= rrdset_first_entry_t(st)) ? rrdset_first_slot(st) : \
- ( (rrdset_last_slot(st) >= (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) ? \
- (rrdset_last_slot(st) - (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) : \
- (rrdset_last_slot(st) - (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) + (unsigned long)(st)->entries ) \
- )))
-
-// get the timestamp of a specific slot in the round robin database
-#define rrdset_slot2time(st, slot) ( rrdset_last_entry_t(st) - \
- ((unsigned long)(st)->update_every * ( \
- ( (unsigned long)(slot) > rrdset_last_slot(st)) ? \
- ( (rrdset_last_slot(st) - (unsigned long)(slot) + (unsigned long)(st)->entries) ) : \
- ( (rrdset_last_slot(st) - (unsigned long)(slot)) )) \
- ))
-
-// ----------------------------------------------------------------------------
-// RRD DIMENSION functions
-
-extern RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collected_number multiplier, collected_number divisor, RRD_ALGORITHM algorithm, RRD_MEMORY_MODE memory_mode);
-#define rrddim_add(st, id, name, multiplier, divisor, algorithm) rrddim_add_custom(st, id, name, multiplier, divisor, algorithm, (st)->rrd_memory_mode)
-
-extern int rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name);
-extern int rrddim_set_algorithm(RRDSET *st, RRDDIM *rd, RRD_ALGORITHM algorithm);
-extern int rrddim_set_multiplier(RRDSET *st, RRDDIM *rd, collected_number multiplier);
-extern int rrddim_set_divisor(RRDSET *st, RRDDIM *rd, collected_number divisor);
-
-extern RRDDIM *rrddim_find(RRDSET *st, const char *id);
-
-extern int rrddim_hide(RRDSET *st, const char *id);
-extern int rrddim_unhide(RRDSET *st, const char *id);
-
-extern collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value);
-extern collected_number rrddim_set(RRDSET *st, const char *id, collected_number value);
-
-extern long align_entries_to_pagesize(RRD_MEMORY_MODE mode, long entries);
-
-// ----------------------------------------------------------------------------
-// RRD internal functions
-
-#ifdef NETDATA_RRD_INTERNALS
-
-extern avl_tree_lock rrdhost_root_index;
-
-extern char *rrdset_strncpyz_name(char *to, const char *from, size_t length);
-extern char *rrdset_cache_dir(RRDHOST *host, const char *id, const char *config_section);
-
-extern void rrddim_free(RRDSET *st, RRDDIM *rd);
-
-extern int rrddim_compare(void* a, void* b);
-extern int rrdset_compare(void* a, void* b);
-extern int rrdset_compare_name(void* a, void* b);
-extern int rrdfamily_compare(void *a, void *b);
-
-extern RRDFAMILY *rrdfamily_create(RRDHOST *host, const char *id);
-extern void rrdfamily_free(RRDHOST *host, RRDFAMILY *rc);
-
-#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))
-extern RRDSET *rrdset_index_del_name(RRDHOST *host, RRDSET *st);
-
-extern void rrdset_free(RRDSET *st);
-extern void rrdset_reset(RRDSET *st);
-extern void rrdset_save(RRDSET *st);
-extern void rrdset_delete(RRDSET *st);
-
-extern void rrdhost_cleanup_obsolete_charts(RRDHOST *host);
-
-#endif /* NETDATA_RRD_INTERNALS */
-
-
-#endif /* NETDATA_RRD_H */