aboutsummaryrefslogtreecommitdiff
path: root/qemu-thread-posix.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu-thread-posix.c')
-rw-r--r--qemu-thread-posix.c327
1 files changed, 0 insertions, 327 deletions
diff --git a/qemu-thread-posix.c b/qemu-thread-posix.c
deleted file mode 100644
index 4489abf1d8..0000000000
--- a/qemu-thread-posix.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * Wrappers around mutex/cond/thread functions
- *
- * Copyright Red Hat, Inc. 2009
- *
- * Author:
- * Marcelo Tosatti <mtosatti@redhat.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <time.h>
-#include <signal.h>
-#include <stdint.h>
-#include <string.h>
-#include <limits.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include "qemu/thread.h"
-
-static void error_exit(int err, const char *msg)
-{
- fprintf(stderr, "qemu: %s: %s\n", msg, strerror(err));
- abort();
-}
-
-void qemu_mutex_init(QemuMutex *mutex)
-{
- int err;
- pthread_mutexattr_t mutexattr;
-
- pthread_mutexattr_init(&mutexattr);
- pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_ERRORCHECK);
- err = pthread_mutex_init(&mutex->lock, &mutexattr);
- pthread_mutexattr_destroy(&mutexattr);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_mutex_destroy(QemuMutex *mutex)
-{
- int err;
-
- err = pthread_mutex_destroy(&mutex->lock);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_mutex_lock(QemuMutex *mutex)
-{
- int err;
-
- err = pthread_mutex_lock(&mutex->lock);
- if (err)
- error_exit(err, __func__);
-}
-
-int qemu_mutex_trylock(QemuMutex *mutex)
-{
- return pthread_mutex_trylock(&mutex->lock);
-}
-
-void qemu_mutex_unlock(QemuMutex *mutex)
-{
- int err;
-
- err = pthread_mutex_unlock(&mutex->lock);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_cond_init(QemuCond *cond)
-{
- int err;
-
- err = pthread_cond_init(&cond->cond, NULL);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_cond_destroy(QemuCond *cond)
-{
- int err;
-
- err = pthread_cond_destroy(&cond->cond);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_cond_signal(QemuCond *cond)
-{
- int err;
-
- err = pthread_cond_signal(&cond->cond);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_cond_broadcast(QemuCond *cond)
-{
- int err;
-
- err = pthread_cond_broadcast(&cond->cond);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
-{
- int err;
-
- err = pthread_cond_wait(&cond->cond, &mutex->lock);
- if (err)
- error_exit(err, __func__);
-}
-
-void qemu_sem_init(QemuSemaphore *sem, int init)
-{
- int rc;
-
-#if defined(__APPLE__) || defined(__NetBSD__)
- rc = pthread_mutex_init(&sem->lock, NULL);
- if (rc != 0) {
- error_exit(rc, __func__);
- }
- rc = pthread_cond_init(&sem->cond, NULL);
- if (rc != 0) {
- error_exit(rc, __func__);
- }
- if (init < 0) {
- error_exit(EINVAL, __func__);
- }
- sem->count = init;
-#else
- rc = sem_init(&sem->sem, 0, init);
- if (rc < 0) {
- error_exit(errno, __func__);
- }
-#endif
-}
-
-void qemu_sem_destroy(QemuSemaphore *sem)
-{
- int rc;
-
-#if defined(__APPLE__) || defined(__NetBSD__)
- rc = pthread_cond_destroy(&sem->cond);
- if (rc < 0) {
- error_exit(rc, __func__);
- }
- rc = pthread_mutex_destroy(&sem->lock);
- if (rc < 0) {
- error_exit(rc, __func__);
- }
-#else
- rc = sem_destroy(&sem->sem);
- if (rc < 0) {
- error_exit(errno, __func__);
- }
-#endif
-}
-
-void qemu_sem_post(QemuSemaphore *sem)
-{
- int rc;
-
-#if defined(__APPLE__) || defined(__NetBSD__)
- pthread_mutex_lock(&sem->lock);
- if (sem->count == INT_MAX) {
- rc = EINVAL;
- } else if (sem->count++ < 0) {
- rc = pthread_cond_signal(&sem->cond);
- } else {
- rc = 0;
- }
- pthread_mutex_unlock(&sem->lock);
- if (rc != 0) {
- error_exit(rc, __func__);
- }
-#else
- rc = sem_post(&sem->sem);
- if (rc < 0) {
- error_exit(errno, __func__);
- }
-#endif
-}
-
-static void compute_abs_deadline(struct timespec *ts, int ms)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
- ts->tv_nsec = tv.tv_usec * 1000 + (ms % 1000) * 1000000;
- ts->tv_sec = tv.tv_sec + ms / 1000;
- if (ts->tv_nsec >= 1000000000) {
- ts->tv_sec++;
- ts->tv_nsec -= 1000000000;
- }
-}
-
-int qemu_sem_timedwait(QemuSemaphore *sem, int ms)
-{
- int rc;
- struct timespec ts;
-
-#if defined(__APPLE__) || defined(__NetBSD__)
- compute_abs_deadline(&ts, ms);
- pthread_mutex_lock(&sem->lock);
- --sem->count;
- while (sem->count < 0) {
- rc = pthread_cond_timedwait(&sem->cond, &sem->lock, &ts);
- if (rc == ETIMEDOUT) {
- ++sem->count;
- break;
- }
- if (rc != 0) {
- error_exit(rc, __func__);
- }
- }
- pthread_mutex_unlock(&sem->lock);
- return (rc == ETIMEDOUT ? -1 : 0);
-#else
- if (ms <= 0) {
- /* This is cheaper than sem_timedwait. */
- do {
- rc = sem_trywait(&sem->sem);
- } while (rc == -1 && errno == EINTR);
- if (rc == -1 && errno == EAGAIN) {
- return -1;
- }
- } else {
- compute_abs_deadline(&ts, ms);
- do {
- rc = sem_timedwait(&sem->sem, &ts);
- } while (rc == -1 && errno == EINTR);
- if (rc == -1 && errno == ETIMEDOUT) {
- return -1;
- }
- }
- if (rc < 0) {
- error_exit(errno, __func__);
- }
- return 0;
-#endif
-}
-
-void qemu_sem_wait(QemuSemaphore *sem)
-{
-#if defined(__APPLE__) || defined(__NetBSD__)
- pthread_mutex_lock(&sem->lock);
- --sem->count;
- while (sem->count < 0) {
- pthread_cond_wait(&sem->cond, &sem->lock);
- }
- pthread_mutex_unlock(&sem->lock);
-#else
- int rc;
-
- do {
- rc = sem_wait(&sem->sem);
- } while (rc == -1 && errno == EINTR);
- if (rc < 0) {
- error_exit(errno, __func__);
- }
-#endif
-}
-
-void qemu_thread_create(QemuThread *thread,
- void *(*start_routine)(void*),
- void *arg, int mode)
-{
- sigset_t set, oldset;
- int err;
- pthread_attr_t attr;
-
- err = pthread_attr_init(&attr);
- if (err) {
- error_exit(err, __func__);
- }
- if (mode == QEMU_THREAD_DETACHED) {
- err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
- if (err) {
- error_exit(err, __func__);
- }
- }
-
- /* Leave signal handling to the iothread. */
- sigfillset(&set);
- pthread_sigmask(SIG_SETMASK, &set, &oldset);
- err = pthread_create(&thread->thread, &attr, start_routine, arg);
- if (err)
- error_exit(err, __func__);
-
- pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-
- pthread_attr_destroy(&attr);
-}
-
-void qemu_thread_get_self(QemuThread *thread)
-{
- thread->thread = pthread_self();
-}
-
-bool qemu_thread_is_self(QemuThread *thread)
-{
- return pthread_equal(pthread_self(), thread->thread);
-}
-
-void qemu_thread_exit(void *retval)
-{
- pthread_exit(retval);
-}
-
-void *qemu_thread_join(QemuThread *thread)
-{
- int err;
- void *ret;
-
- err = pthread_join(thread->thread, &ret);
- if (err) {
- error_exit(err, __func__);
- }
- return ret;
-}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-20 18:23:23 +0000