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separated backtrace functionality from leak_detective, used in

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leak_detective
	mutex profiling
	signal handler
This commit is contained in:
Martin Willi
2008-11-05 13:58:19 +00:00
parent 2abc66b977
commit f7237cf37a
7 changed files with 303 additions and 198 deletions
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src/libstrongswan/utils/mutex.c
+20 -25
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@@ -19,6 +19,7 @@
#include <library.h>
#include <debug.h>
#include <utils/backtrace.h>
#include <pthread.h>
#include <sys/time.h>
@@ -53,14 +54,9 @@ struct private_mutex_t {
struct timeval waited;
/**
* creator of the mutex
* backtrace where mutex has been created
*/
void *stack[10];
/**
* number of pointers in stack
*/
int stack_size;
backtrace_t *backtrace;
#endif /* LOCK_PROFILER */
/**
@@ -111,23 +107,22 @@ struct private_condvar_t {
#include <execinfo.h>
/**
* print mutex locking statistics
* Print and cleanup mutex profiler
*/
static void print_stats(private_mutex_t *this)
static void profiler_cleanup(private_mutex_t *this)
{
int i;
DBG1("waited %d.%06ds in mutex, created at:",
this->waited.tv_sec, this->waited.tv_usec);
for (i = 0; i < this->stack_size; i++)
{
DBG1(" %p", this->stack[i]);
}
fprintf(stderr, "waited %d.%06ds in mutex, created at:",
this->waited.tv_sec, this->waited.tv_usec);
this->backtrace->log(this->backtrace, stderr);
this->backtrace->destroy(this->backtrace);
}
static void init_stats(private_mutex_t *this)
/**
* Initialize mutex profiler
*/
static void profiler_init(private_mutex_t *this)
{
this->stack_size = backtrace(this->stack, countof(this->stack));
this->backtrace = backtrace_create(3);
timerclear(&this->waited);
}
@@ -151,8 +146,8 @@ static void lock(private_mutex_t *this)
#else /* !LOCK_PROFILER */
/** dummy implementations */
static void print_stats(private_mutex_t *this) {}
static void init_stats(private_mutex_t *this) {}
static void profiler_cleanup(private_mutex_t *this) {}
static void profiler_init(private_mutex_t *this) {}
/**
* Implementation of mutex_t.lock.
@@ -224,7 +219,7 @@ static void unlock_r(private_r_mutex_t *this)
*/
static void mutex_destroy(private_mutex_t *this)
{
print_stats(this);
profiler_cleanup(this);
pthread_mutex_destroy(&this->mutex);
free(this);
}
@@ -234,7 +229,7 @@ static void mutex_destroy(private_mutex_t *this)
*/
static void mutex_destroy_r(private_r_mutex_t *this)
{
print_stats(&this->generic);
profiler_cleanup(&this->generic);
pthread_mutex_destroy(&this->generic.mutex);
pthread_key_delete(this->times);
free(this);
@@ -258,7 +253,7 @@ mutex_t *mutex_create(mutex_type_t type)
pthread_mutex_init(&this->generic.mutex, NULL);
pthread_key_create(&this->times, NULL);
this->generic.recursive = TRUE;
init_stats(&this->generic);
profiler_init(&this->generic);
this->thread = 0;
return &this->generic.public;
@@ -274,7 +269,7 @@ mutex_t *mutex_create(mutex_type_t type)
pthread_mutex_init(&this->mutex, NULL);
this->recursive = FALSE;
init_stats(this);
profiler_init(this);
return &this->public;
}