mirror of
https://github.com/sstefani/mtrace.git
synced 2025-12-07 01:06:41 +08:00
0a26d61e70
This is the first public release of the ptrace based mtrace utility, a dynamic memory allocation debuger and analyzer.
145 lines
3.0 KiB
C
145 lines
3.0 KiB
C
/*
|
|
* phtread thread wrapper
|
|
*
|
|
* This file is part of mtrace.
|
|
* Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* 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
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <pthread.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
|
|
#include "thread.h"
|
|
|
|
struct thread {
|
|
pthread_t thread;
|
|
int running;
|
|
pthread_attr_t attr;
|
|
void *arg;
|
|
void *(*start_routine)(void *);
|
|
};
|
|
|
|
struct thread *thread_new(void)
|
|
{
|
|
int ret;
|
|
|
|
struct thread *thread = malloc(sizeof(*thread));
|
|
|
|
if (!thread)
|
|
return NULL;
|
|
|
|
thread->running = 0;
|
|
|
|
ret = pthread_attr_init(&thread->attr);
|
|
if (ret) {
|
|
fprintf(stderr, "pthread_attr_init failed: %s\n", strerror(ret));
|
|
goto fail1;
|
|
}
|
|
|
|
ret = pthread_attr_setdetachstate(&thread->attr, PTHREAD_CREATE_JOINABLE);
|
|
if (ret) {
|
|
fprintf(stderr, "pthread_attr_setdetachstate failed: %s\n", strerror(ret));
|
|
goto fail2;
|
|
}
|
|
|
|
ret = pthread_attr_setinheritsched(&thread->attr, PTHREAD_EXPLICIT_SCHED);
|
|
if (ret) {
|
|
fprintf(stderr, "pthread_attr_setinheritsched failed: %s\n", strerror(ret));
|
|
goto fail2;
|
|
}
|
|
|
|
return thread;
|
|
fail2:
|
|
pthread_attr_destroy(&thread->attr);
|
|
fail1:
|
|
free(thread);
|
|
return NULL;
|
|
}
|
|
|
|
void thread_remove(struct thread *thread)
|
|
{
|
|
thread_join(thread);
|
|
|
|
pthread_attr_destroy(&thread->attr);
|
|
|
|
free(thread);
|
|
}
|
|
|
|
static void *thread_wrapper(void *instance)
|
|
{
|
|
struct thread *thread = instance;
|
|
void *ret;
|
|
|
|
pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL);
|
|
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
|
|
|
|
ret = thread->start_routine(thread->arg);
|
|
|
|
pthread_exit(ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int thread_start(struct thread *thread, void *(*start_routine)(void *), void *arg)
|
|
{
|
|
int ret;
|
|
|
|
if (thread->running)
|
|
return -1;
|
|
|
|
thread->start_routine = start_routine;
|
|
thread->arg = arg;
|
|
|
|
ret = pthread_create(&thread->thread, &thread->attr, thread_wrapper, thread);
|
|
|
|
if (!ret)
|
|
thread->running = 1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void thread_join(struct thread *thread)
|
|
{
|
|
if (thread->running) {
|
|
pthread_join(thread->thread, 0);
|
|
|
|
thread->running = 0;
|
|
}
|
|
}
|
|
|
|
void thread_enable_cancel(void)
|
|
{
|
|
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
|
|
}
|
|
|
|
void thread_disable_cancel(void)
|
|
{
|
|
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
|
|
}
|
|
|
|
void thread_cancel(struct thread *thread)
|
|
{
|
|
if (thread->running)
|
|
pthread_cancel(thread->thread);
|
|
}
|
|
|