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Show the number of times a lock was acquired in lock profiler

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This commit is contained in:
Martin Willi
2009-10-23 08:12:17 +02:00
parent c5f36782ca
commit 3dc40325d5
1 changed files with 18 additions and 4 deletions
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src/libstrongswan/utils/mutex.c
+18 -4
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@@ -35,7 +35,13 @@ typedef struct private_rwlock_t private_rwlock_t;
/**
* Do not report mutexes with an overall waiting time smaller than this (in us)
*/
#define PROFILE_TRESHHOLD 1000
#define PROFILE_WAIT_TRESHHOLD 10000
/**
* Do not report mutexes with an overall lock count smaller than this
*/
#define PROFILE_LOCK_TRESHHOLD 1000
#include <utils/backtrace.h>
@@ -48,6 +54,11 @@ struct lock_profile_t {
*/
timeval_t waited;
/**
* How many times the lock has been invoked
*/
u_int locked;
/**
* backtrace where mutex has been created
*/
@@ -60,10 +71,11 @@ struct lock_profile_t {
static void profiler_cleanup(lock_profile_t *profile)
{
if (profile->waited.tv_sec > 0 ||
profile->waited.tv_usec > PROFILE_TRESHHOLD)
profile->waited.tv_usec > PROFILE_WAIT_TRESHHOLD ||
profile->locked > PROFILE_LOCK_TRESHHOLD)
{
fprintf(stderr, "%d.%06ds in lock created at:",
profile->waited.tv_sec, profile->waited.tv_usec);
fprintf(stderr, "%d.%03ds / %d times in lock created at:",
profile->waited.tv_sec, profile->waited.tv_usec, profile->locked);
profile->backtrace->log(profile->backtrace, stderr);
}
profile->backtrace->destroy(profile->backtrace);
@@ -76,10 +88,12 @@ static void profiler_init(lock_profile_t *profile)
{
profile->backtrace = backtrace_create(2);
timerclear(&profile->waited);
profile->locked = 0;
}
#define profiler_start(profile) { \
struct timeval _start, _end, _diff; \
(profile)->locked++; \
time_monotonic(&_start);
#define profiler_end(profile) \