/* Copyright (C) 2007-2015 Open Information Security Foundation * * You can copy, redistribute or modify this Program under the terms of * the GNU General Public License version 2 as published by the Free * Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * version 2 along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ /** * \file * * \author Anoop Saldanha * \author Victor Julien * * Engine stats API */ #include "suricata-common.h" #include "suricata.h" #include "counters.h" #include "threadvars.h" #include "tm-threads.h" #include "conf.h" #include "util-time.h" #include "util-unittest.h" #include "util-debug.h" #include "util-privs.h" #include "util-signal.h" #include "unix-manager.h" #include "output.h" /* Time interval for syncing the local counters with the global ones */ #define STATS_WUT_TTS 3 /* Time interval at which the mgmt thread o/p the stats */ #define STATS_MGMTT_TTS 8 /** * \brief Different kinds of qualifier that can be used to modify the behaviour * of the counter to be registered */ enum { STATS_TYPE_NORMAL = 1, STATS_TYPE_AVERAGE = 2, STATS_TYPE_MAXIMUM = 3, STATS_TYPE_FUNC = 4, STATS_TYPE_MAX = 5, }; /** * \brief per thread store of counters */ typedef struct StatsThreadStore_ { /** thread name used in output */ const char *name; StatsPublicThreadContext *ctx; StatsPublicThreadContext **head; uint32_t size; struct StatsThreadStore_ *next; } StatsThreadStore; /** * \brief Holds the output interface context for the counter api */ typedef struct StatsGlobalContext_ { /** list of thread stores: one per thread plus one global */ StatsThreadStore *sts; SCMutex sts_lock; int sts_cnt; HashTable *counters_id_hash; StatsPublicThreadContext global_counter_ctx; } StatsGlobalContext; static void *stats_thread_data = NULL; static StatsGlobalContext *stats_ctx = NULL; static time_t stats_start_time; /** refresh interval in seconds */ static uint32_t stats_tts = STATS_MGMTT_TTS; /** is the stats counter enabled? */ static char stats_enabled = TRUE; static int StatsOutput(ThreadVars *tv); static int StatsThreadRegister(const char *thread_name, StatsPublicThreadContext *); void StatsReleaseCounters(StatsCounter *head); /** stats table is filled each interval and passed to the * loggers. Initialized at first use. */ static StatsTable stats_table = { NULL, NULL, 0, 0, 0, {0 , 0}}; static uint16_t counters_global_id = 0; static void StatsPublicThreadContextInit(StatsPublicThreadContext *t) { SCMutexInit(&t->m, NULL); } static void StatsPublicThreadContextCleanup(StatsPublicThreadContext *t) { SCMutexLock(&t->m); StatsReleaseCounters(t->head); t->head = NULL; t->perf_flag = 0; t->curr_id = 0; SCMutexUnlock(&t->m); SCMutexDestroy(&t->m); } /** * \brief Adds a value of type uint64_t to the local counter. * * \param id ID of the counter as set by the API * \param pca Counter array that holds the local counter for this TM * \param x Value to add to this local counter */ void StatsAddUI64(ThreadVars *tv, uint16_t id, uint64_t x) { StatsPrivateThreadContext *pca = &tv->perf_private_ctx; #ifdef UNITTESTS if (pca->initialized == 0) return; #endif #ifdef DEBUG BUG_ON ((id < 1) || (id > pca->size)); #endif pca->head[id].value += x; pca->head[id].updates++; return; } /** * \brief Increments the local counter * * \param id Index of the counter in the counter array * \param pca Counter array that holds the local counters for this TM */ void StatsIncr(ThreadVars *tv, uint16_t id) { StatsPrivateThreadContext *pca = &tv->perf_private_ctx; #ifdef UNITTESTS if (pca->initialized == 0) return; #endif #ifdef DEBUG BUG_ON ((id < 1) || (id > pca->size)); #endif pca->head[id].value++; pca->head[id].updates++; return; } /** * \brief Sets a value of type double to the local counter * * \param id Index of the local counter in the counter array * \param pca Pointer to the StatsPrivateThreadContext * \param x The value to set for the counter */ void StatsSetUI64(ThreadVars *tv, uint16_t id, uint64_t x) { StatsPrivateThreadContext *pca = &tv->perf_private_ctx; #ifdef UNITTESTS if (pca->initialized == 0) return; #endif #ifdef DEBUG BUG_ON ((id < 1) || (id > pca->size)); #endif if ((pca->head[id].pc->type == STATS_TYPE_MAXIMUM) && (x > pca->head[id].value)) { pca->head[id].value = x; } else if (pca->head[id].pc->type == STATS_TYPE_NORMAL) { pca->head[id].value = x; } pca->head[id].updates++; return; } static ConfNode *GetConfig(void) { ConfNode *stats = ConfGetNode("stats"); if (stats != NULL) return stats; ConfNode *root = ConfGetNode("outputs"); ConfNode *node = NULL; if (root != NULL) { TAILQ_FOREACH(node, &root->head, next) { if (strcmp(node->val, "stats") == 0) { return node->head.tqh_first; } } } return NULL; } /** * \brief Initializes stats context */ static void StatsInitCtx(void) { SCEnter(); ConfNode *stats = GetConfig(); if (stats != NULL) { const char *enabled = ConfNodeLookupChildValue(stats, "enabled"); if (enabled != NULL && ConfValIsFalse(enabled)) { stats_enabled = FALSE; SCLogDebug("Stats module has been disabled"); SCReturn; } const char *interval = ConfNodeLookupChildValue(stats, "interval"); if (interval != NULL) stats_tts = (uint32_t) atoi(interval); } if (!OutputStatsLoggersRegistered()) { SCLogWarning(SC_WARN_NO_STATS_LOGGERS, "stats are enabled but no loggers are active"); stats_enabled = FALSE; SCReturn; } /* Store the engine start time */ time(&stats_start_time); /* init the lock used by StatsThreadStore */ if (SCMutexInit(&stats_ctx->sts_lock, NULL) != 0) { SCLogError(SC_ERR_INITIALIZATION, "error initializing sts mutex"); exit(EXIT_FAILURE); } SCReturn; } /** * \brief Releases the resources alloted to the output context of the * Stats API */ static void StatsReleaseCtx() { if (stats_ctx == NULL) { SCLogDebug("Counter module has been disabled"); return; } StatsThreadStore *sts = NULL; StatsThreadStore *temp = NULL; sts = stats_ctx->sts; while (sts != NULL) { if (sts->head != NULL) SCFree(sts->head); temp = sts->next; SCFree(sts); sts = temp; } if (stats_ctx->counters_id_hash != NULL) { HashTableFree(stats_ctx->counters_id_hash); stats_ctx->counters_id_hash = NULL; } StatsPublicThreadContextCleanup(&stats_ctx->global_counter_ctx); SCFree(stats_ctx); stats_ctx = NULL; /* free stats table */ if (stats_table.tstats != NULL) { SCFree(stats_table.tstats); stats_table.tstats = NULL; } if (stats_table.stats != NULL) { SCFree(stats_table.stats); stats_table.stats = NULL; } memset(&stats_table, 0, sizeof(stats_table)); return; } /** * \brief management thread. This thread is responsible for writing the stats * * \param arg thread var * * \retval NULL This is the value that is always returned */ static void *StatsMgmtThread(void *arg) { /* block usr2. usr2 to be handled by the main thread only */ UtilSignalBlock(SIGUSR2); ThreadVars *tv_local = (ThreadVars *)arg; uint8_t run = 1; struct timespec cond_time; /* Set the thread name */ if (SCSetThreadName(tv_local->name) < 0) { SCLogWarning(SC_ERR_THREAD_INIT, "Unable to set thread name"); } if (tv_local->thread_setup_flags != 0) TmThreadSetupOptions(tv_local); /* Set the threads capability */ tv_local->cap_flags = 0; SCDropCaps(tv_local); if (stats_ctx == NULL) { SCLogError(SC_ERR_STATS_NOT_INIT, "Stats API not init" "StatsInitCounterApi() has to be called first"); TmThreadsSetFlag(tv_local, THV_CLOSED | THV_RUNNING_DONE); return NULL; } TmModule *tm = &tmm_modules[TMM_STATSLOGGER]; BUG_ON(tm->ThreadInit == NULL); int r = tm->ThreadInit(tv_local, NULL, &stats_thread_data); if (r != 0 || stats_thread_data == NULL) { SCLogError(SC_ERR_THREAD_INIT, "Stats API " "ThreadInit failed"); TmThreadsSetFlag(tv_local, THV_CLOSED | THV_RUNNING_DONE); return NULL; } SCLogDebug("stats_thread_data %p", &stats_thread_data); TmThreadsSetFlag(tv_local, THV_INIT_DONE); while (run) { if (TmThreadsCheckFlag(tv_local, THV_PAUSE)) { TmThreadsSetFlag(tv_local, THV_PAUSED); TmThreadTestThreadUnPaused(tv_local); TmThreadsUnsetFlag(tv_local, THV_PAUSED); } cond_time.tv_sec = time(NULL) + stats_tts; cond_time.tv_nsec = 0; /* wait for the set time, or until we are woken up by * the shutdown procedure */ SCCtrlMutexLock(tv_local->ctrl_mutex); SCCtrlCondTimedwait(tv_local->ctrl_cond, tv_local->ctrl_mutex, &cond_time); SCCtrlMutexUnlock(tv_local->ctrl_mutex); StatsOutput(tv_local); if (TmThreadsCheckFlag(tv_local, THV_KILL)) { run = 0; } } TmThreadsSetFlag(tv_local, THV_RUNNING_DONE); TmThreadWaitForFlag(tv_local, THV_DEINIT); r = tm->ThreadDeinit(tv_local, stats_thread_data); if (r != TM_ECODE_OK) { SCLogError(SC_ERR_THREAD_DEINIT, "Stats Counter API " "ThreadDeinit failed"); } TmThreadsSetFlag(tv_local, THV_CLOSED); return NULL; } /** * \brief Wake up thread. This thread wakes up every TTS(time to sleep) seconds * and sets the flag for every ThreadVars' StatsPublicThreadContext * * \param arg is NULL always * * \retval NULL This is the value that is always returned */ static void *StatsWakeupThread(void *arg) { /* block usr2. usr2 to be handled by the main thread only */ UtilSignalBlock(SIGUSR2); ThreadVars *tv_local = (ThreadVars *)arg; uint8_t run = 1; ThreadVars *tv = NULL; PacketQueue *q = NULL; struct timespec cond_time; /* Set the thread name */ if (SCSetThreadName(tv_local->name) < 0) { SCLogWarning(SC_ERR_THREAD_INIT, "Unable to set thread name"); } if (tv_local->thread_setup_flags != 0) TmThreadSetupOptions(tv_local); /* Set the threads capability */ tv_local->cap_flags = 0; SCDropCaps(tv_local); if (stats_ctx == NULL) { SCLogError(SC_ERR_STATS_NOT_INIT, "Stats API not init" "StatsInitCounterApi() has to be called first"); TmThreadsSetFlag(tv_local, THV_CLOSED | THV_RUNNING_DONE); return NULL; } TmThreadsSetFlag(tv_local, THV_INIT_DONE); while (run) { if (TmThreadsCheckFlag(tv_local, THV_PAUSE)) { TmThreadsSetFlag(tv_local, THV_PAUSED); TmThreadTestThreadUnPaused(tv_local); TmThreadsUnsetFlag(tv_local, THV_PAUSED); } cond_time.tv_sec = time(NULL) + STATS_WUT_TTS; cond_time.tv_nsec = 0; /* wait for the set time, or until we are woken up by * the shutdown procedure */ SCCtrlMutexLock(tv_local->ctrl_mutex); SCCtrlCondTimedwait(tv_local->ctrl_cond, tv_local->ctrl_mutex, &cond_time); SCCtrlMutexUnlock(tv_local->ctrl_mutex); tv = tv_root[TVT_PPT]; while (tv != NULL) { if (tv->perf_public_ctx.head == NULL) { tv = tv->next; continue; } /* assuming the assignment of an int to be atomic, and even if it's * not, it should be okay */ tv->perf_public_ctx.perf_flag = 1; if (tv->inq != NULL) { q = &trans_q[tv->inq->id]; SCCondSignal(&q->cond_q); } tv = tv->next; } /* mgt threads for flow manager */ tv = tv_root[TVT_MGMT]; while (tv != NULL) { if (tv->perf_public_ctx.head == NULL) { tv = tv->next; continue; } /* assuming the assignment of an int to be atomic, and even if it's * not, it should be okay */ tv->perf_public_ctx.perf_flag = 1; tv = tv->next; } if (TmThreadsCheckFlag(tv_local, THV_KILL)) { run = 0; } } TmThreadsSetFlag(tv_local, THV_RUNNING_DONE); TmThreadWaitForFlag(tv_local, THV_DEINIT); TmThreadsSetFlag(tv_local, THV_CLOSED); return NULL; } /** * \brief Releases a counter * * \param pc Pointer to the StatsCounter to be freed */ static void StatsReleaseCounter(StatsCounter *pc) { if (pc != NULL) { SCFree(pc); } return; } /** * \brief Registers a counter. * * \param name Name of the counter, to be registered * \param tm_name Thread module to which this counter belongs * \param pctx StatsPublicThreadContext for this tm-tv instance * \param type_q Qualifier describing the type of counter to be registered * * \retval the counter id for the newly registered counter, or the already * present counter on success * \retval 0 on failure */ static uint16_t StatsRegisterQualifiedCounter(char *name, char *tm_name, StatsPublicThreadContext *pctx, int type_q, uint64_t (*Func)(void)) { StatsCounter **head = &pctx->head; StatsCounter *temp = NULL; StatsCounter *prev = NULL; StatsCounter *pc = NULL; if (name == NULL || pctx == NULL) { SCLogDebug("Counter name, StatsPublicThreadContext NULL"); return 0; } temp = prev = *head; while (temp != NULL) { prev = temp; if (strcmp(name, temp->name) == 0) { break; } temp = temp->next; } /* We already have a counter registered by this name */ if (temp != NULL) return(temp->id); /* if we reach this point we don't have a counter registered by this name */ if ( (pc = SCMalloc(sizeof(StatsCounter))) == NULL) return 0; memset(pc, 0, sizeof(StatsCounter)); /* assign a unique id to this StatsCounter. The id is local to this * thread context. Please note that the id start from 1, and not 0 */ pc->id = ++(pctx->curr_id); pc->name = name; pc->type = type_q; pc->Func = Func; /* we now add the counter to the list */ if (prev == NULL) *head = pc; else prev->next = pc; return pc->id; } /** * \brief Copies the StatsCounter value from the local counter present in the * StatsPrivateThreadContext to its corresponding global counterpart. Used * internally by StatsUpdateCounterArray() * * \param pcae Pointer to the StatsPrivateThreadContext which holds the local * versions of the counters */ static void StatsCopyCounterValue(StatsLocalCounter *pcae) { StatsCounter *pc = pcae->pc; pc->value = pcae->value; pc->updates = pcae->updates; return; } /** * \brief The output interface for the Stats API */ static int StatsOutput(ThreadVars *tv) { const StatsThreadStore *sts = NULL; const StatsCounter *pc = NULL; void *td = stats_thread_data; if (counters_global_id == 0) return -1; if (stats_table.nstats == 0) { StatsThreadRegister("Global", &stats_ctx->global_counter_ctx); uint32_t nstats = counters_global_id; stats_table.nstats = nstats; stats_table.stats = SCCalloc(stats_table.nstats, sizeof(StatsRecord)); if (stats_table.stats == NULL) { stats_table.nstats = 0; SCLogError(SC_ERR_MEM_ALLOC, "could not alloc memory for stats"); return -1; } stats_table.ntstats = stats_ctx->sts_cnt; uint32_t array_size = stats_table.nstats * sizeof(StatsRecord); stats_table.tstats = SCCalloc(stats_table.ntstats, array_size); if (stats_table.tstats == NULL) { stats_table.ntstats = 0; SCLogError(SC_ERR_MEM_ALLOC, "could not alloc memory for stats"); return -1; } stats_table.start_time = stats_start_time; } const uint16_t max_id = counters_global_id; if (max_id == 0) return -1; /** temporary local table to merge the per thread counters, * especially needed for the average counters */ struct CountersMergeTable { int type; uint64_t value; uint64_t updates; } merge_table[max_id]; memset(&merge_table, 0x00, max_id * sizeof(struct CountersMergeTable)); int thread = stats_ctx->sts_cnt - 1; StatsRecord *table = stats_table.stats; /* Loop through the thread counter stores. The global counters * are in a separate store inside this list. */ sts = stats_ctx->sts; SCLogDebug("sts %p", sts); while (sts != NULL) { BUG_ON(thread < 0); SCLogDebug("Thread %d %s ctx %p", thread, sts->name, sts->ctx); /* temporay table for quickly storing the counters for this * thread store, so that we can post process them outside * of the thread store lock */ struct CountersMergeTable thread_table[max_id]; memset(&thread_table, 0x00, max_id * sizeof(struct CountersMergeTable)); SCMutexLock(&sts->ctx->m); pc = sts->ctx->head; while (pc != NULL) { SCLogDebug("Counter %s (%u:%u) value %"PRIu64, pc->name, pc->id, pc->gid, pc->value); thread_table[pc->gid].type = pc->type; switch (pc->type) { case STATS_TYPE_FUNC: if (pc->Func != NULL) thread_table[pc->gid].value = pc->Func(); break; case STATS_TYPE_AVERAGE: default: thread_table[pc->gid].value = pc->value; break; } thread_table[pc->gid].updates = pc->updates; table[pc->gid].name = pc->name; pc = pc->next; } SCMutexUnlock(&sts->ctx->m); /* update merge table */ uint16_t c; for (c = 0; c < max_id; c++) { struct CountersMergeTable *e = &thread_table[c]; /* thread only sets type if it has a counter * of this type. */ if (e->type == 0) continue; switch (e->type) { case STATS_TYPE_MAXIMUM: if (e->value > merge_table[c].value) merge_table[c].value = e->value; break; case STATS_TYPE_FUNC: merge_table[c].value = e->value; break; case STATS_TYPE_AVERAGE: default: merge_table[c].value += e->value; break; } merge_table[c].updates += e->updates; merge_table[c].type = e->type; } /* update per thread stats table */ for (c = 0; c < max_id; c++) { struct CountersMergeTable *e = &thread_table[c]; /* thread only sets type if it has a counter * of this type. */ if (e->type == 0) continue; uint32_t offset = (thread * stats_table.nstats) + c; StatsRecord *r = &stats_table.tstats[offset]; r->name = table[c].name; r->tm_name = sts->name; switch (e->type) { case STATS_TYPE_AVERAGE: if (e->value > 0 && e->updates > 0) { r->value = (uint64_t)(e->value / e->updates); } break; default: r->value = e->value; break; } } sts = sts->next; thread--; } /* transfer 'merge table' to final stats table */ uint16_t x; for (x = 0; x < max_id; x++) { /* xfer previous value to pvalue and reset value */ table[x].pvalue = table[x].value; table[x].value = 0; table[x].tm_name = "Total"; struct CountersMergeTable *m = &merge_table[x]; switch (m->type) { case STATS_TYPE_MAXIMUM: if (m->value > table[x].value) table[x].value = m->value; break; case STATS_TYPE_AVERAGE: if (m->value > 0 && m->updates > 0) { table[x].value = (uint64_t)(m->value / m->updates); } break; default: table[x].value += m->value; break; } } /* invoke logger(s) */ OutputStatsLog(tv, td, &stats_table); return 1; } #ifdef BUILD_UNIX_SOCKET /** * \todo reimplement this, probably based on stats-json */ TmEcode StatsOutputCounterSocket(json_t *cmd, json_t *answer, void *data) { json_object_set_new(answer, "message", json_string("not implemented")); return TM_ECODE_FAILED; } #endif /* BUILD_UNIX_SOCKET */ /** * \brief Initializes the perf counter api. Things are hard coded currently. * More work to be done when we implement multiple interfaces */ void StatsInit(void) { BUG_ON(stats_ctx != NULL); if ( (stats_ctx = SCMalloc(sizeof(StatsGlobalContext))) == NULL) { SCLogError(SC_ERR_FATAL, "Fatal error encountered in StatsInitCtx. Exiting..."); exit(EXIT_FAILURE); } memset(stats_ctx, 0, sizeof(StatsGlobalContext)); StatsPublicThreadContextInit(&stats_ctx->global_counter_ctx); } void StatsSetupPostConfig(void) { StatsInitCtx(); } /** * \brief Spawns the wakeup, and the management thread used by the stats api * * The threads use the condition variable in the thread vars to control * their wait loops to make sure the main thread can quickly kill them. */ void StatsSpawnThreads(void) { SCEnter(); if (!stats_enabled) { SCReturn; } ThreadVars *tv_wakeup = NULL; ThreadVars *tv_mgmt = NULL; /* spawn the stats wakeup thread */ tv_wakeup = TmThreadCreateMgmtThread("StatsWakeupThread", StatsWakeupThread, 1); if (tv_wakeup == NULL) { SCLogError(SC_ERR_THREAD_CREATE, "TmThreadCreateMgmtThread " "failed"); exit(EXIT_FAILURE); } if (TmThreadSpawn(tv_wakeup) != 0) { SCLogError(SC_ERR_THREAD_SPAWN, "TmThreadSpawn failed for " "StatsWakeupThread"); exit(EXIT_FAILURE); } /* spawn the stats mgmt thread */ tv_mgmt = TmThreadCreateMgmtThread("StatsMgmtThread", StatsMgmtThread, 1); if (tv_mgmt == NULL) { SCLogError(SC_ERR_THREAD_CREATE, "TmThreadCreateMgmtThread failed"); exit(EXIT_FAILURE); } if (TmThreadSpawn(tv_mgmt) != 0) { SCLogError(SC_ERR_THREAD_SPAWN, "TmThreadSpawn failed for " "StatsWakeupThread"); exit(EXIT_FAILURE); } SCReturn; } /** * \brief Registers a normal, unqualified counter * * \param name Name of the counter, to be registered * \param tv Pointer to the ThreadVars instance for which the counter would * be registered * * \retval id Counter id for the newly registered counter, or the already * present counter */ uint16_t StatsRegisterCounter(char *name, struct ThreadVars_ *tv) { uint16_t id = StatsRegisterQualifiedCounter(name, (tv->thread_group_name != NULL) ? tv->thread_group_name : tv->name, &tv->perf_public_ctx, STATS_TYPE_NORMAL, NULL); return id; } /** * \brief Registers a counter, whose value holds the average of all the values * assigned to it. * * \param name Name of the counter, to be registered * \param tv Pointer to the ThreadVars instance for which the counter would * be registered * * \retval id Counter id for the newly registered counter, or the already * present counter */ uint16_t StatsRegisterAvgCounter(char *name, struct ThreadVars_ *tv) { uint16_t id = StatsRegisterQualifiedCounter(name, (tv->thread_group_name != NULL) ? tv->thread_group_name : tv->name, &tv->perf_public_ctx, STATS_TYPE_AVERAGE, NULL); return id; } /** * \brief Registers a counter, whose value holds the maximum of all the values * assigned to it. * * \param name Name of the counter, to be registered * \param tv Pointer to the ThreadVars instance for which the counter would * be registered * * \retval the counter id for the newly registered counter, or the already * present counter */ uint16_t StatsRegisterMaxCounter(char *name, struct ThreadVars_ *tv) { uint16_t id = StatsRegisterQualifiedCounter(name, (tv->thread_group_name != NULL) ? tv->thread_group_name : tv->name, &tv->perf_public_ctx, STATS_TYPE_MAXIMUM, NULL); return id; } /** * \brief Registers a counter, which represents a global value * * \param name Name of the counter, to be registered * \param Func Function Pointer returning a uint64_t * * \retval id Counter id for the newly registered counter, or the already * present counter */ uint16_t StatsRegisterGlobalCounter(char *name, uint64_t (*Func)(void)) { #ifdef UNITTESTS if (stats_ctx == NULL) return 0; #else BUG_ON(stats_ctx == NULL); #endif uint16_t id = StatsRegisterQualifiedCounter(name, NULL, &(stats_ctx->global_counter_ctx), STATS_TYPE_FUNC, Func); return id; } typedef struct CountersIdType_ { uint16_t id; const char *string; } CountersIdType; uint32_t CountersIdHashFunc(HashTable *ht, void *data, uint16_t datalen) { CountersIdType *t = (CountersIdType *)data; uint32_t hash = 0; int i = 0; int len = strlen(t->string); for (i = 0; i < len; i++) hash += tolower((unsigned char)t->string[i]); hash = hash % ht->array_size; return hash; } char CountersIdHashCompareFunc(void *data1, uint16_t datalen1, void *data2, uint16_t datalen2) { CountersIdType *t1 = (CountersIdType *)data1; CountersIdType *t2 = (CountersIdType *)data2; int len1 = 0; int len2 = 0; if (t1 == NULL || t2 == NULL) return 0; if (t1->string == NULL || t2->string == NULL) return 0; len1 = strlen(t1->string); len2 = strlen(t2->string); if (len1 == len2 && memcmp(t1->string, t2->string, len1) == 0) { return 1; } return 0; } void CountersIdHashFreeFunc(void *data) { SCFree(data); } /** \internal * \brief Adds a TM to the clubbed TM table. Multiple instances of the same TM * are stacked together in a PCTMI container. * * \param tm_name Name of the tm to be added to the table * \param pctx StatsPublicThreadContext associated with the TM tm_name * * \retval 1 on success, 0 on failure */ static int StatsThreadRegister(const char *thread_name, StatsPublicThreadContext *pctx) { if (stats_ctx == NULL) { SCLogDebug("Counter module has been disabled"); return 0; } StatsThreadStore *temp = NULL; if (thread_name == NULL || pctx == NULL) { SCLogDebug("supplied argument(s) to StatsThreadRegister NULL"); return 0; } SCMutexLock(&stats_ctx->sts_lock); if (stats_ctx->counters_id_hash == NULL) { stats_ctx->counters_id_hash = HashTableInit(256, CountersIdHashFunc, CountersIdHashCompareFunc, CountersIdHashFreeFunc); BUG_ON(stats_ctx->counters_id_hash == NULL); } StatsCounter *pc = pctx->head; while (pc != NULL) { CountersIdType t = { 0, pc->name }, *id = NULL; id = HashTableLookup(stats_ctx->counters_id_hash, &t, sizeof(t)); if (id == NULL) { id = SCCalloc(1, sizeof(*id)); BUG_ON(id == NULL); id->id = counters_global_id++; id->string = pc->name; BUG_ON(HashTableAdd(stats_ctx->counters_id_hash, id, sizeof(*id)) < 0); } pc->gid = id->id; pc = pc->next; } if ( (temp = SCMalloc(sizeof(StatsThreadStore))) == NULL) { SCMutexUnlock(&stats_ctx->sts_lock); return 0; } memset(temp, 0, sizeof(StatsThreadStore)); temp->ctx = pctx; temp->name = thread_name; temp->next = stats_ctx->sts; stats_ctx->sts = temp; stats_ctx->sts_cnt++; SCLogDebug("stats_ctx->sts %p", stats_ctx->sts); SCMutexUnlock(&stats_ctx->sts_lock); return 1; } /** \internal * \brief Returns a counter array for counters in this id range(s_id - e_id) * * \param s_id Counter id of the first counter to be added to the array * \param e_id Counter id of the last counter to be added to the array * \param pctx Pointer to the tv's StatsPublicThreadContext * * \retval a counter-array in this(s_id-e_id) range for this TM instance */ static int StatsGetCounterArrayRange(uint16_t s_id, uint16_t e_id, StatsPublicThreadContext *pctx, StatsPrivateThreadContext *pca) { StatsCounter *pc = NULL; uint32_t i = 0; if (pctx == NULL || pca == NULL) { SCLogDebug("pctx/pca is NULL"); return -1; } if (s_id < 1 || e_id < 1 || s_id > e_id) { SCLogDebug("error with the counter ids"); return -1; } if (e_id > pctx->curr_id) { SCLogDebug("end id is greater than the max id for this tv"); return -1; } if ( (pca->head = SCMalloc(sizeof(StatsLocalCounter) * (e_id - s_id + 2))) == NULL) { return -1; } memset(pca->head, 0, sizeof(StatsLocalCounter) * (e_id - s_id + 2)); pc = pctx->head; while (pc->id != s_id) pc = pc->next; i = 1; while ((pc != NULL) && (pc->id <= e_id)) { pca->head[i].pc = pc; pca->head[i].id = pc->id; pc = pc->next; i++; } pca->size = i - 1; pca->initialized = 1; return 0; } /** \internal * \brief Returns a counter array for all counters registered for this tm * instance * * \param pctx Pointer to the tv's StatsPublicThreadContext * * \retval pca Pointer to a counter-array for all counter of this tm instance * on success; NULL on failure */ static int StatsGetAllCountersArray(StatsPublicThreadContext *pctx, StatsPrivateThreadContext *private) { if (pctx == NULL || private == NULL) return -1; return StatsGetCounterArrayRange(1, pctx->curr_id, pctx, private); } int StatsSetupPrivate(ThreadVars *tv) { StatsGetAllCountersArray(&(tv)->perf_public_ctx, &(tv)->perf_private_ctx); StatsThreadRegister(tv->name, &(tv)->perf_public_ctx); return 0; } /** * \brief Syncs the counter array with the global counter variables * * \param pca Pointer to the StatsPrivateThreadContext * \param pctx Pointer the the tv's StatsPublicThreadContext * * \retval 0 on success * \retval -1 on error */ int StatsUpdateCounterArray(StatsPrivateThreadContext *pca, StatsPublicThreadContext *pctx) { StatsLocalCounter *pcae = NULL; uint32_t i = 0; if (pca == NULL || pctx == NULL) { SCLogDebug("pca or pctx is NULL inside StatsUpdateCounterArray"); return -1; } pcae = pca->head; SCMutexLock(&pctx->m); for (i = 1; i <= pca->size; i++) { StatsCopyCounterValue(&pcae[i]); } SCMutexUnlock(&pctx->m); pctx->perf_flag = 0; return 1; } /** * \brief Get the value of the local copy of the counter that hold this id. * * \param tv threadvars * \param id The counter id. * * \retval 0 on success. * \retval -1 on error. */ uint64_t StatsGetLocalCounterValue(ThreadVars *tv, uint16_t id) { StatsPrivateThreadContext *pca = &tv->perf_private_ctx; #ifdef DEBUG BUG_ON ((id < 1) || (id > pca->size)); #endif return pca->head[id].value; } /** * \brief Releases the resources alloted by the Stats API */ void StatsReleaseResources() { StatsReleaseCtx(); return; } /** * \brief Releases counters * * \param head Pointer to the head of the list of perf counters that have to * be freed */ void StatsReleaseCounters(StatsCounter *head) { StatsCounter *pc = NULL; while (head != NULL) { pc = head; head = head->next; StatsReleaseCounter(pc); } return; } /** * \brief Releases the StatsPrivateThreadContext allocated by the user, for storing and * updating local counter values * * \param pca Pointer to the StatsPrivateThreadContext */ void StatsReleasePrivateThreadContext(StatsPrivateThreadContext *pca) { if (pca != NULL) { if (pca->head != NULL) { SCFree(pca->head); pca->head = NULL; pca->size = 0; } pca->initialized = 0; } return; } void StatsThreadCleanup(ThreadVars *tv) { StatsPublicThreadContextCleanup(&tv->perf_public_ctx); StatsReleasePrivateThreadContext(&tv->perf_private_ctx); } /*----------------------------------Unit_Tests--------------------------------*/ #ifdef UNITTESTS /** \internal * \brief Registers a normal, unqualified counter * * \param name Name of the counter, to be registered * \param tm_name Name of the engine module under which the counter has to be * registered * \param type Datatype of this counter variable * \param pctx StatsPublicThreadContext corresponding to the tm_name key under which the * key has to be registered * * \retval id Counter id for the newly registered counter, or the already * present counter */ static uint16_t RegisterCounter(char *name, char *tm_name, StatsPublicThreadContext *pctx) { uint16_t id = StatsRegisterQualifiedCounter(name, tm_name, pctx, STATS_TYPE_NORMAL, NULL); return id; } static int StatsTestCounterReg02() { StatsPublicThreadContext pctx; memset(&pctx, 0, sizeof(StatsPublicThreadContext)); return RegisterCounter(NULL, NULL, &pctx); } static int StatsTestCounterReg03() { StatsPublicThreadContext pctx; int result; memset(&pctx, 0, sizeof(StatsPublicThreadContext)); result = RegisterCounter("t1", "c1", &pctx); StatsReleaseCounters(pctx.head); return result; } static int StatsTestCounterReg04() { StatsPublicThreadContext pctx; int result; memset(&pctx, 0, sizeof(StatsPublicThreadContext)); RegisterCounter("t1", "c1", &pctx); RegisterCounter("t2", "c2", &pctx); RegisterCounter("t3", "c3", &pctx); result = RegisterCounter("t1", "c1", &pctx); StatsReleaseCounters(pctx.head); return result; } static int StatsTestGetCntArray05() { ThreadVars tv; int id; memset(&tv, 0, sizeof(ThreadVars)); id = RegisterCounter("t1", "c1", &tv.perf_public_ctx); if (id != 1) { printf("id %d: ", id); return 0; } int r = StatsGetAllCountersArray(NULL, &tv.perf_private_ctx); return (r == -1) ? 1 : 0; } static int StatsTestGetCntArray06() { ThreadVars tv; int id; int result; memset(&tv, 0, sizeof(ThreadVars)); id = RegisterCounter("t1", "c1", &tv.perf_public_ctx); if (id != 1) return 0; int r = StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); result = (r == 0) ? 1 : 0; StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(&tv.perf_private_ctx); return result; } static int StatsTestCntArraySize07() { ThreadVars tv; StatsPrivateThreadContext *pca = NULL; int result; memset(&tv, 0, sizeof(ThreadVars)); //pca = (StatsPrivateThreadContext *)&tv.perf_private_ctx; RegisterCounter("t1", "c1", &tv.perf_public_ctx); RegisterCounter("t2", "c2", &tv.perf_public_ctx); StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); pca = &tv.perf_private_ctx; StatsIncr(&tv, 1); StatsIncr(&tv, 2); result = pca->size; StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(pca); return result; } static int StatsTestUpdateCounter08() { ThreadVars tv; StatsPrivateThreadContext *pca = NULL; int id; int result; memset(&tv, 0, sizeof(ThreadVars)); id = RegisterCounter("t1", "c1", &tv.perf_public_ctx); StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); pca = &tv.perf_private_ctx; StatsIncr(&tv, id); StatsAddUI64(&tv, id, 100); result = pca->head[id].value; StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(pca); return result; } static int StatsTestUpdateCounter09() { ThreadVars tv; StatsPrivateThreadContext *pca = NULL; uint16_t id1, id2; int result; memset(&tv, 0, sizeof(ThreadVars)); id1 = RegisterCounter("t1", "c1", &tv.perf_public_ctx); RegisterCounter("t2", "c2", &tv.perf_public_ctx); RegisterCounter("t3", "c3", &tv.perf_public_ctx); RegisterCounter("t4", "c4", &tv.perf_public_ctx); id2 = RegisterCounter("t5", "c5", &tv.perf_public_ctx); StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); pca = &tv.perf_private_ctx; StatsIncr(&tv, id2); StatsAddUI64(&tv, id2, 100); result = (pca->head[id1].value == 0) && (pca->head[id2].value == 101); StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(pca); return result; } static int StatsTestUpdateGlobalCounter10() { ThreadVars tv; StatsPrivateThreadContext *pca = NULL; int result = 1; uint16_t id1, id2, id3; memset(&tv, 0, sizeof(ThreadVars)); id1 = RegisterCounter("t1", "c1", &tv.perf_public_ctx); id2 = RegisterCounter("t2", "c2", &tv.perf_public_ctx); id3 = RegisterCounter("t3", "c3", &tv.perf_public_ctx); StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); pca = &tv.perf_private_ctx; StatsIncr(&tv, id1); StatsAddUI64(&tv, id2, 100); StatsIncr(&tv, id3); StatsAddUI64(&tv, id3, 100); StatsUpdateCounterArray(pca, &tv.perf_public_ctx); result = (1 == tv.perf_public_ctx.head->value); result &= (100 == tv.perf_public_ctx.head->next->value); result &= (101 == tv.perf_public_ctx.head->next->next->value); StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(pca); return result; } static int StatsTestCounterValues11() { ThreadVars tv; StatsPrivateThreadContext *pca = NULL; int result = 1; uint16_t id1, id2, id3, id4; memset(&tv, 0, sizeof(ThreadVars)); id1 = RegisterCounter("t1", "c1", &tv.perf_public_ctx); id2 = RegisterCounter("t2", "c2", &tv.perf_public_ctx); id3 = RegisterCounter("t3", "c3", &tv.perf_public_ctx); id4 = RegisterCounter("t4", "c4", &tv.perf_public_ctx); StatsGetAllCountersArray(&tv.perf_public_ctx, &tv.perf_private_ctx); pca = &tv.perf_private_ctx; StatsIncr(&tv, id1); StatsAddUI64(&tv, id2, 256); StatsAddUI64(&tv, id3, 257); StatsAddUI64(&tv, id4, 16843024); StatsUpdateCounterArray(pca, &tv.perf_public_ctx); result &= (1 == tv.perf_public_ctx.head->value); result &= (256 == tv.perf_public_ctx.head->next->value); result &= (257 == tv.perf_public_ctx.head->next->next->value); result &= (16843024 == tv.perf_public_ctx.head->next->next->next->value); StatsReleaseCounters(tv.perf_public_ctx.head); StatsReleasePrivateThreadContext(pca); return result; } #endif void StatsRegisterTests() { #ifdef UNITTESTS UtRegisterTest("StatsTestCounterReg02", StatsTestCounterReg02, 0); UtRegisterTest("StatsTestCounterReg03", StatsTestCounterReg03, 1); UtRegisterTest("StatsTestCounterReg04", StatsTestCounterReg04, 1); UtRegisterTest("StatsTestGetCntArray05", StatsTestGetCntArray05, 1); UtRegisterTest("StatsTestGetCntArray06", StatsTestGetCntArray06, 1); UtRegisterTest("StatsTestCntArraySize07", StatsTestCntArraySize07, 2); UtRegisterTest("StatsTestUpdateCounter08", StatsTestUpdateCounter08, 101); UtRegisterTest("StatsTestUpdateCounter09", StatsTestUpdateCounter09, 1); UtRegisterTest("StatsTestUpdateGlobalCounter10", StatsTestUpdateGlobalCounter10, 1); UtRegisterTest("StatsTestCounterValues11", StatsTestCounterValues11, 1); #endif }