forked from regit/suricata
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counters.c
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counters.c
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/* Copyright (C) 2007-2010 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 <anoopsaldanha@gmail.com>
*
* Performance counters
*/
#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"
/** \todo Get the default log directory from some global resource. */
#define SC_PERF_DEFAULT_LOG_FILENAME "stats.log"
/* Used to parse the interval for Timebased counters */
#define SC_PERF_PCRE_TIMEBASED_INTERVAL "^(?:(\\d+)([shm]))(?:(\\d+)([shm]))?(?:(\\d+)([shm]))?$"
static SCPerfOPIfaceContext *sc_perf_op_ctx = NULL;
static time_t sc_start_time;
/** refresh interval in seconds */
static uint32_t sc_counter_tts = SC_PERF_MGMTT_TTS;
/** is the stats counter enabled? */
static char sc_counter_enabled = TRUE;
/** append or overwrite? 1: append, 0: overwrite */
static char sc_counter_append = TRUE;
/**
* \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 SCPerfCounterAddUI64(uint16_t id, SCPerfCounterArray *pca, uint64_t x)
{
if (!pca) {
SCLogDebug("counterarray is NULL");
return;
}
if ((id < 1) || (id > pca->size)) {
SCLogDebug("counter doesn't exist");
return;
}
switch (pca->head[id].pc->value->type) {
case SC_PERF_TYPE_UINT64:
pca->head[id].ui64_cnt += x;
break;
case SC_PERF_TYPE_DOUBLE:
pca->head[id].d_cnt += x;
break;
}
if (pca->head[id].syncs == ULONG_MAX) {
pca->head[id].syncs = 0;
pca->head[id].wrapped_syncs++;
}
pca->head[id].syncs++;
return;
}
/**
* \brief Adds a value of type double 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 SCPerfCounterAddDouble(uint16_t id, SCPerfCounterArray *pca, double x)
{
if (!pca) {
SCLogDebug("counterarray is NULL");
return;
}
if ((id < 1) || (id > pca->size)) {
SCLogDebug("counter doesn't exist");
return;
}
/* incase you are trying to add a double to a counter of type SC_PERF_TYPE_UINT64
* it will be truncated */
switch (pca->head[id].pc->value->type) {
case SC_PERF_TYPE_UINT64:
pca->head[id].ui64_cnt += x;
break;
case SC_PERF_TYPE_DOUBLE:
pca->head[id].d_cnt += x;
break;
}
if (pca->head[id].syncs == ULONG_MAX) {
pca->head[id].syncs = 0;
pca->head[id].wrapped_syncs++;
}
pca->head[id].syncs++;
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 SCPerfCounterIncr(uint16_t id, SCPerfCounterArray *pca)
{
if (pca == NULL) {
SCLogDebug("counterarray is NULL");
return;
}
if ((id < 1) || (id > pca->size)) {
SCLogDebug("counter doesn't exist");
return;
}
switch (pca->head[id].pc->value->type) {
case SC_PERF_TYPE_UINT64:
pca->head[id].ui64_cnt++;
break;
case SC_PERF_TYPE_DOUBLE:
pca->head[id].d_cnt++;
break;
}
if (pca->head[id].syncs == ULONG_MAX) {
pca->head[id].syncs = 0;
pca->head[id].wrapped_syncs++;
}
pca->head[id].syncs++;
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 SCPerfCounterArray
* \param x The value to set for the counter
*/
void SCPerfCounterSetUI64(uint16_t id, SCPerfCounterArray *pca,
uint64_t x)
{
if (!pca) {
SCLogDebug("counterarray is NULL");
return;
}
if ((id < 1) || (id > pca->size)) {
SCLogDebug("counter doesn't exist");
return;
}
switch (pca->head[id].pc->value->type) {
case SC_PERF_TYPE_UINT64:
if ( (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_MAXIMUM) &&
(x > pca->head[id].ui64_cnt)) {
pca->head[id].ui64_cnt = x;
} else if (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_NORMAL) {
pca->head[id].ui64_cnt = x;
}
break;
case SC_PERF_TYPE_DOUBLE:
if ( (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_MAXIMUM) &&
(x > pca->head[id].d_cnt)) {
pca->head[id].d_cnt = x;
} else if (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_NORMAL) {
pca->head[id].d_cnt = x;
}
break;
}
if (pca->head[id].syncs == ULONG_MAX) {
pca->head[id].syncs = 0;
pca->head[id].wrapped_syncs++;
}
pca->head[id].syncs++;
return;
}
/**
* \brief Sets a local counter to an arg of type double
*
* \param id Index of the local counter in the counter array
* \param pca Pointer to the SCPerfCounterArray
* \param x The value to set for the counter
*/
void SCPerfCounterSetDouble(uint16_t id, SCPerfCounterArray *pca,
double x)
{
if (!pca) {
SCLogDebug("counterarray is NULL");
return;
}
if ((id < 1) || (id > pca->size)) {
SCLogDebug("counter doesn't exist");
return;
}
switch (pca->head[id].pc->value->type) {
case SC_PERF_TYPE_UINT64:
if ( (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_MAXIMUM) &&
(x > pca->head[id].ui64_cnt)) {
pca->head[id].ui64_cnt = x;
} else if (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_NORMAL) {
pca->head[id].ui64_cnt = x;
}
break;
case SC_PERF_TYPE_DOUBLE:
if ( (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_MAXIMUM) &&
(x > pca->head[id].d_cnt)) {
pca->head[id].d_cnt = x;
} else if (pca->head[id].pc->type_q->type & SC_PERF_TYPE_Q_NORMAL) {
pca->head[id].d_cnt = x;
}
break;
}
if (pca->head[id].syncs == ULONG_MAX) {
pca->head[id].syncs = 0;
pca->head[id].wrapped_syncs++;
}
pca->head[id].syncs++;
return;
}
/**
* \brief Get the filename with path to the stats log file.
*
* This function returns a string containing the log filename. It uses
* allocated memory simply to drop into the existing code a little better
* where a SCStrdup was used. So as before, it is up to the caller to free
* the memory.
*
* \retval An allocated string containing the log filename on success or NULL on
* failure.
*/
static char *SCPerfGetLogFilename(ConfNode *stats)
{
char *log_dir = NULL;
char *log_filename = NULL;
const char* filename = NULL;
if (ConfGet("default-log-dir", &log_dir) != 1)
log_dir = DEFAULT_LOG_DIR;
if ( (log_filename = SCMalloc(PATH_MAX)) == NULL) {
return NULL;
}
if (stats != NULL) {
filename = ConfNodeLookupChildValue(stats, "filename");
if (filename == NULL) {
filename = SC_PERF_DEFAULT_LOG_FILENAME;
}
} else {
filename = SC_PERF_DEFAULT_LOG_FILENAME;
}
if (snprintf(log_filename, PATH_MAX, "%s/%s", log_dir,
filename) < 0) {
SCLogError(SC_ERR_SPRINTF, "Sprintf Error");
SCFree(log_filename);
return NULL;
}
return log_filename;
}
/**
* \brief Initializes the output interface context
*
* \todo Support multiple interfaces
*/
static void SCPerfInitOPCtx(void)
{
SCEnter();
ConfNode *root = ConfGetNode("outputs");
ConfNode *node = NULL;
ConfNode *stats = NULL;
if (root != NULL) {
TAILQ_FOREACH(node, &root->head, next) {
if (strncmp(node->val, "stats", 5) == 0) {
stats = node->head.tqh_first;
}
}
}
/* Check if the stats module is enabled or not */
if (stats != NULL) {
const char *enabled = ConfNodeLookupChildValue(stats, "enabled");
if (enabled != NULL && ConfValIsFalse(enabled)) {
sc_counter_enabled = FALSE;
SCLogDebug("Stats module has been disabled");
SCReturn;
}
const char *interval = ConfNodeLookupChildValue(stats, "interval");
if (interval != NULL)
sc_counter_tts = (uint32_t) atoi(interval);
const char *append = ConfNodeLookupChildValue(stats, "append");
if (append != NULL)
sc_counter_append = ConfValIsTrue(append);
}
/* Store the engine start time */
time(&sc_start_time);
if ( (sc_perf_op_ctx = SCMalloc(sizeof(SCPerfOPIfaceContext))) == NULL) {
SCLogError(SC_ERR_FATAL, "Fatal error encountered in SCPerfInitOPCtx. Exiting...");
exit(EXIT_FAILURE);
}
memset(sc_perf_op_ctx, 0, sizeof(SCPerfOPIfaceContext));
sc_perf_op_ctx->iface = SC_PERF_IFACE_FILE;
if ( (sc_perf_op_ctx->file = SCPerfGetLogFilename(stats)) == NULL) {
SCLogInfo("Error retrieving Perf Counter API output file path");
}
char *mode;
if (sc_counter_append)
mode = "a+";
else
mode = "w+";
if ( (sc_perf_op_ctx->fp = fopen(sc_perf_op_ctx->file, mode)) == NULL) {
SCLogError(SC_ERR_FOPEN, "fopen error opening file \"%s\". Resorting "
"to using the standard output for output",
sc_perf_op_ctx->file);
SCFree(sc_perf_op_ctx->file);
/* Let us use the standard output for output */
sc_perf_op_ctx->fp = stdout;
if ( (sc_perf_op_ctx->file = SCStrdup("stdout")) == NULL) {
SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory");
exit(EXIT_FAILURE);
}
}
/* club the counter from multiple instances of the tm before o/p */
sc_perf_op_ctx->club_tm = 1;
/* init the lock used by SCPerfClubTMInst */
if (SCMutexInit(&sc_perf_op_ctx->pctmi_lock, NULL) != 0) {
SCLogError(SC_ERR_INITIALIZATION, "error initializing pctmi mutex");
exit(EXIT_FAILURE);
}
SCReturn;
}
/**
* \brief Releases the resources alloted to the output context of the Perf
* Counter API
*/
static void SCPerfReleaseOPCtx()
{
if (sc_perf_op_ctx == NULL) {
SCLogDebug("Counter module has been disabled");
return;
}
SCPerfClubTMInst *pctmi = NULL;
SCPerfClubTMInst *temp = NULL;
pctmi = sc_perf_op_ctx->pctmi;
if (sc_perf_op_ctx->fp != NULL)
fclose(sc_perf_op_ctx->fp);
if (sc_perf_op_ctx->file != NULL)
SCFree(sc_perf_op_ctx->file);
while (pctmi != NULL) {
if (pctmi->tm_name != NULL)
SCFree(pctmi->tm_name);
if (pctmi->head != NULL)
SCFree(pctmi->head);
temp = pctmi->next;
SCFree(pctmi);
pctmi = temp;
}
SCFree(sc_perf_op_ctx);
sc_perf_op_ctx = NULL;
return;
}
/**
* \brief The management thread. This thread is responsible for writing the
* performance stats information.
*
* \param arg is NULL always
*
* \retval NULL This is the value that is always returned
*/
static void *SCPerfMgmtThread(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 (sc_perf_op_ctx == NULL) {
SCLogError(SC_ERR_PERF_STATS_NOT_INIT, "Perf Counter API not init"
"SCPerfInitCounterApi() has to be called first");
TmThreadsSetFlag(tv_local, THV_CLOSED | THV_RUNNING_DONE);
return NULL;
}
TmThreadsSetFlag(tv_local, THV_INIT_DONE);
while (run) {
TmThreadTestThreadUnPaused(tv_local);
cond_time.tv_sec = time(NULL) + sc_counter_tts;
cond_time.tv_nsec = 0;
SCMutexLock(tv_local->m);
SCCondTimedwait(tv_local->cond, tv_local->m, &cond_time);
SCMutexUnlock(tv_local->m);
SCPerfOutputCounters();
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 Wake up thread. This thread wakes up every TTS(time to sleep) seconds
* and sets the flag for every ThreadVars' SCPerfContext
*
* \param arg is NULL always
*
* \retval NULL This is the value that is always returned
*/
static void *SCPerfWakeupThread(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 (sc_perf_op_ctx == NULL) {
SCLogError(SC_ERR_PERF_STATS_NOT_INIT, "Perf Counter API not init"
"SCPerfInitCounterApi() has to be called first");
TmThreadsSetFlag(tv_local, THV_CLOSED | THV_RUNNING_DONE);
return NULL;
}
TmThreadsSetFlag(tv_local, THV_INIT_DONE);
while (run) {
TmThreadTestThreadUnPaused(tv_local);
cond_time.tv_sec = time(NULL) + SC_PERF_WUT_TTS;
cond_time.tv_nsec = 0;
SCMutexLock(tv_local->m);
SCCondTimedwait(tv_local->cond, tv_local->m, &cond_time);
SCMutexUnlock(tv_local->m);
tv = tv_root[TVT_PPT];
while (tv != NULL) {
if (tv->sc_perf_pctx.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->sc_perf_pctx.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->sc_perf_pctx.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->sc_perf_pctx.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 Parses a time based counter interval
*
* \param pc Pointer to the PerfCounter that has to be updated with the
* interval
* \param interval Pointer to a character string that holds the time interval
*
* \retval 0 on successfully parsing the time_interval
* \retval -1 on error
*/
static int SCPerfParseTBCounterInterval(SCPerfCounter *pc, char *interval)
{
pcre *regex = NULL;
pcre_extra *regex_study = NULL;
int opts = 0;
const char *ep = NULL;
const char *str_ptr1 = NULL;
const char *str_ptr2 = NULL;
int eo = 0;
int ret = 0;
int res = 0;
int ov[30];
int temp_value = 0;
int i = 0;
regex = pcre_compile(SC_PERF_PCRE_TIMEBASED_INTERVAL, opts, &ep, &eo, NULL);
if (regex == NULL) {
SCLogInfo("pcre compile of \"%s\" failed at offset %d: %s", interval,
eo, ep);
goto error;
}
regex_study = pcre_study(regex, 0, &ep);
if (ep != NULL) {
SCLogInfo("pcre study failed: %s", ep);
goto error;
}
ret = pcre_exec(regex, regex_study, interval, strlen(interval), 0, 0, ov, 30);
if (ret < 0) {
SCLogWarning(SC_ERR_INVALID_ARGUMENTS, "Invalid Timebased interval");
goto error;
}
for (i = 1; i < ret; i += 2) {
res = pcre_get_substring((char *)interval, ov, 30, i, &str_ptr1);
if (res < 0) {
SCLogInfo("SCPerfParseTBCounterInterval:pcre_get_substring failed");
goto error;
}
temp_value = atoi(str_ptr1);
res = pcre_get_substring((char *)interval, ov, 30, i + 1, &str_ptr2);
if (res < 0) {
SCLogInfo("SCPerfParseTBCounterInterval:pcre_get_substring failed");
goto error;
}
switch (*str_ptr2) {
case 'h':
if (temp_value < 0 || temp_value > 24) {
SCLogInfo("Invalid timebased counter interval");
goto error;
}
pc->type_q->hours = temp_value;
break;
case 'm':
if (temp_value < 0 || temp_value >= 60) {
SCLogInfo("Invalid timebased counter interval");
goto error;
}
pc->type_q->minutes = temp_value;
break;
case 's':
if (temp_value < 0 || temp_value >= 60) {
SCLogInfo("Invalid timebased counter interval");
goto error;
}
pc->type_q->seconds = temp_value;
break;
}
}
if ( !(pc->type_q->hours | pc->type_q->minutes | pc->type_q->seconds)) {
SCLogInfo("Invalid timebased counter interval");
goto error;
}
pc->type_q->total_secs = ((pc->type_q->hours * 60 * 60) +
(pc->type_q->minutes * 60) + pc->type_q->seconds);
if (str_ptr1 != NULL) SCFree((char *)str_ptr1);
if (str_ptr2 != NULL) SCFree((char *)str_ptr2);
SCFree(regex);
return 0;
error:
if (str_ptr1 != NULL) SCFree((char *)str_ptr1);
if (str_ptr2 != NULL) SCFree((char *)str_ptr2);
return -1;
}
/**
* \brief Releases a perf counter. Used internally by
* SCPerfReleasePerfCounterS()
*
* \param pc Pointer to the SCPerfCounter to be freed
*/
static void SCPerfReleaseCounter(SCPerfCounter *pc)
{
if (pc != NULL) {
if (pc->name != NULL) {
if (pc->name->cname != NULL)
SCFree(pc->name->cname);
if (pc->name->tm_name != NULL)
SCFree(pc->name->tm_name);
SCFree(pc->name);
}
if (pc->value != NULL) {
if (pc->value->cvalue != NULL)
SCFree(pc->value->cvalue);
SCFree(pc->value);
}
if (pc->desc != NULL)
SCFree(pc->desc);
if (pc->type_q != NULL)
SCFree(pc->type_q);
SCFree(pc);
}
return;
}
/**
* \brief Registers a counter. Used internally by the Perf Counter API
*
* \param cname Name of the counter, to be registered
* \param tm_name Thread module to which this counter belongs
* \param type Datatype of this counter variable
* \param desc Description of this counter
* \param pctx SCPerfContext for this tm-tv instance
* \param type_q Qualifier describing the type of counter to be registered
* \param interval Time interval required by a SC_PERF_TYPE_Q_TIMEBASED counter
*
* \retval the counter id for the newly registered counter, or the already
* present counter on success
* \retval 0 on failure
*/
static uint16_t SCPerfRegisterQualifiedCounter(char *cname, char *tm_name,
int type, char *desc,
SCPerfContext *pctx, int type_q,
char *interval)
{
SCPerfCounter **head = &pctx->head;
SCPerfCounter *temp = NULL;
SCPerfCounter *prev = NULL;
SCPerfCounter *pc = NULL;
if (cname == NULL || tm_name == NULL || pctx == NULL) {
SCLogDebug("Counter name, tm name null or SCPerfContext NULL");
return 0;
}
/* (SC_PERF_TYPE_MAX - 1) because we haven't implemented SC_PERF_TYPE_STR */
if ((type >= (SC_PERF_TYPE_MAX - 1)) || (type < 0)) {
SCLogError(SC_ERR_INVALID_ARGUMENTS, "Counters of type %" PRId32 " can't "
"be registered", type);
return 0;
}
temp = prev = *head;
while (temp != NULL) {
prev = temp;
if (strcmp(cname, temp->name->cname) == 0 &&
strcmp(tm_name, temp->name->tm_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 cname */
if ( (pc = SCMalloc(sizeof(SCPerfCounter))) == NULL)
return 0;
memset(pc, 0, sizeof(SCPerfCounter));
if ( (pc->name = SCMalloc(sizeof(SCPerfCounterName))) == NULL) {
SCFree(pc);
return 0;
}
memset(pc->name, 0, sizeof(SCPerfCounterName));
if ( (pc->value = SCMalloc(sizeof(SCPerfCounterValue))) == NULL) {
SCFree(pc->name);
SCFree(pc);
return 0;
}
memset(pc->value, 0, sizeof(SCPerfCounterValue));
if ( (pc->name->cname = SCStrdup(cname)) == NULL) {
SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory");
exit(EXIT_FAILURE);
}
if ( (pc->name->tm_name = SCStrdup(tm_name)) == NULL) {
SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory");
exit(EXIT_FAILURE);
}
/* assign a unique id to this SCPerfCounter. The id is local to this
* PerfContext. Please note that the id start from 1, and not 0 */
pc->id = ++(pctx->curr_id);
if (desc != NULL && (pc->desc = SCStrdup(desc)) == NULL) {
SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory");
exit(EXIT_FAILURE);
}
if ( (pc->type_q = SCMalloc(sizeof(SCPerfCounterTypeQ))) == NULL)
return 0;
memset(pc->type_q, 0, sizeof(SCPerfCounterTypeQ));
pc->type_q->type = type_q;
/* handle timebased counters */
if (pc->type_q->type & SC_PERF_TYPE_Q_TIMEBASED) {
/* override for all timebased counters */
type = SC_PERF_TYPE_DOUBLE;
if (SCPerfParseTBCounterInterval(pc, interval) == -1) {
SCPerfReleaseCounter(pc);
return 0;
}
}
/* allocate memory to hold this counter value */
pc->value->type = type;
switch (pc->value->type) {
case SC_PERF_TYPE_UINT64:
pc->value->size = sizeof(uint64_t);
break;
case SC_PERF_TYPE_DOUBLE:
pc->value->size = sizeof(double);
break;
}
if ( (pc->value->cvalue = SCMalloc(pc->value->size)) == NULL)
return 0;
memset(pc->value->cvalue, 0, pc->value->size);
/* display flag which specifies if the counter should be displayed or not */
pc->disp = 1;
/* we now add the counter to the list */
if (prev == NULL)
*head = pc;
else
prev->next = pc;
return pc->id;
}
/**
* \brief Copies the SCPerfCounter value from the local counter present in the
* SCPerfCounterArray to its corresponding global counterpart. Used
* internally by SCPerfUpdateCounterArray()
*
* \param pcae Pointer to the SCPerfCounterArray which holds the local
* versions of the counters
* \param reset_lc Flag which indicates if the values of the local counters
* in the SCPerfCounterArray has to be reset or not
*/
static void SCPerfCopyCounterValue(SCPCAElem *pcae, int reset_lc)
{
SCPerfCounter *pc = NULL;
double d_temp = 0;
uint64_t ui64_temp = 0;
struct timeval curr_ts;
uint64_t u = 0;
pc = pcae->pc;
switch (pc->value->type) {
case SC_PERF_TYPE_UINT64:
ui64_temp = pcae->ui64_cnt;
if (pc->type_q->type & SC_PERF_TYPE_Q_AVERAGE) {
for (u = 0; u < pcae->wrapped_syncs; u++)
ui64_temp /= ULONG_MAX;
if (pcae->syncs != 0)
ui64_temp /= pcae->syncs;
*((uint64_t *)pc->value->cvalue) = ui64_temp;
} else if (pc->type_q->type & SC_PERF_TYPE_Q_TIMEBASED) {
/* we have a timebased counter. Awesome. Time for some more processing */
TimeGet(&curr_ts);
pc->type_q->tbc_secs += ((curr_ts.tv_sec + curr_ts.tv_usec / 1000000.0) -
(pcae->ts.tv_sec + pcae->ts.tv_usec / 1000000.0));
/* special treatment for timebased counters. We add instead of
* copying to the global counters. The job of resetting the
* global counters is done by the output function */
*((uint64_t *)pc->value->cvalue) += ui64_temp;
pcae->ui64_cnt = 0;
/* reset it to the current time */
TimeGet(&pcae->ts);
} else {
*((uint64_t *)pc->value->cvalue) = ui64_temp;
}
if (reset_lc)
pcae->ui64_cnt = 0;
break;
case SC_PERF_TYPE_DOUBLE:
d_temp = pcae->d_cnt;
if (pc->type_q->type & SC_PERF_TYPE_Q_AVERAGE) {
for (u = 0; u < pcae->wrapped_syncs; u++)
d_temp /= ULONG_MAX;
if (pcae->syncs != 0)
d_temp /= pcae->syncs;
*((double *)pc->value->cvalue) = d_temp;
} else if (pc->type_q->type & SC_PERF_TYPE_Q_TIMEBASED) {
/* we have a timebased counter. Awesome. Time for some more processing */
TimeGet(&curr_ts);
pc->type_q->tbc_secs += ((curr_ts.tv_sec + curr_ts.tv_usec / 1000000.0) -
(pcae->ts.tv_sec + pcae->ts.tv_usec / 1000000.0));
/* special treatment for timebased counters. We add instead of
* copying to the global counters. The job of resetting the
* global counters is done by the output function */
*((double *)pc->value->cvalue) += d_temp;
pcae->d_cnt = 0;
/* reset it to the current time */
TimeGet(&pcae->ts);
} else {
*((double *)pc->value->cvalue) = d_temp;
}
if (reset_lc)
pcae->d_cnt = 0;
break;
}
return;
}
/**
* \brief Calculates counter value that should be sent as output
*
* If we aren't dealing with timebased counters, we just return the
* the counter value. In case of Timebased counters, if we haven't
* crossed the interval, we display the current value without any
* modifications. If we have crossed the limit, we calculate the counter
* value for the time period and also return 1, to indicate that the
* counter value can be reset after use
*
* \param pc Pointer to the PerfCounter for which the timebased counter has to
* be calculated
*/
static void SCPerfOutputCalculateCounterValue(SCPerfCounter *pc, void *cvalue_op)
{
double divisor = 0;
switch (pc->value->type) {
case SC_PERF_TYPE_UINT64:
*((uint64_t *)cvalue_op) = *((uint64_t *)pc->value->cvalue);
break;
case SC_PERF_TYPE_DOUBLE:
*((double *)cvalue_op) = *((double *)pc->value->cvalue);
break;
}
/* if we don't have a Timebased counter, we are out of here */
if ( !(pc->type_q->type & SC_PERF_TYPE_Q_TIMEBASED))
return;
//if (pc->type_q->tbc_secs < pc->type_q->total_secs)
// return;
divisor = pc->type_q->tbc_secs/pc->type_q->total_secs;
divisor += ((double)(pc->type_q->tbc_secs % pc->type_q->total_secs)/
pc->type_q->total_secs);
switch (pc->value->type) {
case SC_PERF_TYPE_UINT64:
*((uint64_t *)cvalue_op) /= divisor;
break;
case SC_PERF_TYPE_DOUBLE: