mirror of
https://github.com/sstefani/mtrace.git
synced 2025-12-06 16:56:41 +08:00
147 lines
3.0 KiB
C
147 lines
3.0 KiB
C
/*
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* phtread thread wrapper
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*
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* This file is part of mtrace.
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* Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
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*
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* This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include "thread.h"
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struct thread {
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pthread_t thread;
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int running;
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pthread_attr_t attr;
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void *arg;
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void *(*start_routine)(void *);
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};
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struct thread *thread_new(void)
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{
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int ret;
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struct thread *thread = malloc(sizeof(*thread));
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if (!thread)
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return NULL;
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thread->running = 0;
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ret = pthread_attr_init(&thread->attr);
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if (ret) {
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fprintf(stderr, "pthread_attr_init failed: %s\n", strerror(ret));
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goto fail1;
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}
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ret = pthread_attr_setdetachstate(&thread->attr, PTHREAD_CREATE_JOINABLE);
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if (ret) {
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fprintf(stderr, "pthread_attr_setdetachstate failed: %s\n", strerror(ret));
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goto fail2;
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}
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ret = pthread_attr_setinheritsched(&thread->attr, PTHREAD_EXPLICIT_SCHED);
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if (ret) {
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fprintf(stderr, "pthread_attr_setinheritsched failed: %s\n", strerror(ret));
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goto fail2;
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}
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return thread;
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fail2:
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pthread_attr_destroy(&thread->attr);
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fail1:
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free(thread);
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return NULL;
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}
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void thread_remove(struct thread *thread)
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{
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thread_join(thread);
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pthread_attr_destroy(&thread->attr);
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free(thread);
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}
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static void *thread_wrapper(void *instance)
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{
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struct thread *thread = instance;
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void *ret;
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pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL);
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pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
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ret = thread->start_routine(thread->arg);
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pthread_exit(ret);
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return ret;
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}
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int thread_start(struct thread *thread, void *(*start_routine)(void *), void *arg)
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{
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int ret;
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if (thread->running)
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return -1;
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thread->start_routine = start_routine;
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thread->arg = arg;
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ret = pthread_create(&thread->thread, &thread->attr, thread_wrapper, thread);
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if (!ret)
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thread->running = 1;
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return ret;
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}
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void thread_join(struct thread *thread)
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{
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if (thread->running) {
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pthread_join(thread->thread, 0);
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thread->running = 0;
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}
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}
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void thread_enable_cancel(void)
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{
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pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
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}
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void thread_disable_cancel(void)
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{
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pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
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}
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void thread_cancel(struct thread *thread)
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{
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if (thread->running)
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pthread_cancel(thread->thread);
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}
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