New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 */