|
Packit |
c04fcb |
/*
|
|
Packit |
c04fcb |
* Copyright (C) 2013 Mentor Graphics
|
|
Packit |
c04fcb |
*
|
|
Packit |
c04fcb |
* This library is free software; you can redistribute it and/or
|
|
Packit |
c04fcb |
* modify it under the terms of the GNU Lesser General Public
|
|
Packit |
c04fcb |
* License as published by the Free Software Foundation; either
|
|
Packit |
c04fcb |
* version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
c04fcb |
*
|
|
Packit |
c04fcb |
* This library is distributed in the hope that it will be useful,
|
|
Packit |
c04fcb |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
c04fcb |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
c04fcb |
* Lesser General Public License for more details.
|
|
Packit |
c04fcb |
*
|
|
Packit |
c04fcb |
* You should have received a copy of the GNU Lesser General Public
|
|
Packit |
c04fcb |
* License along with this library; if not, write to the Free Software
|
|
Packit |
c04fcb |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
Packit |
c04fcb |
*/
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
#define _GNU_SOURCE
|
|
Packit |
c04fcb |
#include <lttng/ust-dlfcn.h>
|
|
Packit |
c04fcb |
#include <helper.h>
|
|
Packit |
c04fcb |
#include <pthread.h>
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
#define TRACEPOINT_DEFINE
|
|
Packit |
c04fcb |
#define TRACEPOINT_CREATE_PROBES
|
|
Packit |
c04fcb |
#define TP_IP_PARAM ip
|
|
Packit |
c04fcb |
#include "ust_pthread.h"
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
static __thread int thread_in_trace;
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
int pthread_mutex_lock(pthread_mutex_t *mutex)
|
|
Packit |
c04fcb |
{
|
|
Packit |
c04fcb |
static int (*mutex_lock)(pthread_mutex_t *);
|
|
Packit |
c04fcb |
int retval;
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
if (!mutex_lock) {
|
|
Packit |
c04fcb |
mutex_lock = dlsym(RTLD_NEXT, "pthread_mutex_lock");
|
|
Packit |
c04fcb |
if (!mutex_lock) {
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
abort();
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
fprintf(stderr, "unable to initialize pthread wrapper library.\n");
|
|
Packit |
c04fcb |
return EINVAL;
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
return mutex_lock(mutex);
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
thread_in_trace = 1;
|
|
Packit |
c04fcb |
tracepoint(lttng_ust_pthread, pthread_mutex_lock_req, mutex,
|
|
Packit |
c04fcb |
LTTNG_UST_CALLER_IP());
|
|
Packit |
c04fcb |
retval = mutex_lock(mutex);
|
|
Packit |
c04fcb |
tracepoint(lttng_ust_pthread, pthread_mutex_lock_acq, mutex,
|
|
Packit |
c04fcb |
retval, LTTNG_UST_CALLER_IP());
|
|
Packit |
c04fcb |
thread_in_trace = 0;
|
|
Packit |
c04fcb |
return retval;
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
int pthread_mutex_trylock(pthread_mutex_t *mutex)
|
|
Packit |
c04fcb |
{
|
|
Packit |
c04fcb |
static int (*mutex_trylock)(pthread_mutex_t *);
|
|
Packit |
c04fcb |
int retval;
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
if (!mutex_trylock) {
|
|
Packit |
c04fcb |
mutex_trylock = dlsym(RTLD_NEXT, "pthread_mutex_trylock");
|
|
Packit |
c04fcb |
if (!mutex_trylock) {
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
abort();
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
fprintf(stderr, "unable to initialize pthread wrapper library.\n");
|
|
Packit |
c04fcb |
return EINVAL;
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
return mutex_trylock(mutex);
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
thread_in_trace = 1;
|
|
Packit |
c04fcb |
retval = mutex_trylock(mutex);
|
|
Packit |
c04fcb |
tracepoint(lttng_ust_pthread, pthread_mutex_trylock, mutex,
|
|
Packit |
c04fcb |
retval, LTTNG_UST_CALLER_IP());
|
|
Packit |
c04fcb |
thread_in_trace = 0;
|
|
Packit |
c04fcb |
return retval;
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
int pthread_mutex_unlock(pthread_mutex_t *mutex)
|
|
Packit |
c04fcb |
{
|
|
Packit |
c04fcb |
static int (*mutex_unlock)(pthread_mutex_t *);
|
|
Packit |
c04fcb |
int retval;
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
if (!mutex_unlock) {
|
|
Packit |
c04fcb |
mutex_unlock = dlsym(RTLD_NEXT, "pthread_mutex_unlock");
|
|
Packit |
c04fcb |
if (!mutex_unlock) {
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
abort();
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
fprintf(stderr, "unable to initialize pthread wrapper library.\n");
|
|
Packit |
c04fcb |
return EINVAL;
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
if (thread_in_trace) {
|
|
Packit |
c04fcb |
return mutex_unlock(mutex);
|
|
Packit |
c04fcb |
}
|
|
Packit |
c04fcb |
|
|
Packit |
c04fcb |
thread_in_trace = 1;
|
|
Packit |
c04fcb |
retval = mutex_unlock(mutex);
|
|
Packit |
c04fcb |
tracepoint(lttng_ust_pthread, pthread_mutex_unlock, mutex,
|
|
Packit |
c04fcb |
retval, LTTNG_UST_CALLER_IP());
|
|
Packit |
c04fcb |
thread_in_trace = 0;
|
|
Packit |
c04fcb |
return retval;
|
|
Packit |
c04fcb |
}
|