mirror of
https://gitlab.uni-freiburg.de/opensourcevdi/spice
synced 2025-12-26 14:41:25 +00:00
136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
/*
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Copyright (C) 2009 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "common.h"
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#include "threads.h"
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#include "utils.h"
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#include "debug.h"
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#ifdef WIN32
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#include <sys/timeb.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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Thread::Thread(thread_main_t thread_main, void* opaque)
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{
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int r = pthread_create(&_thread, NULL, thread_main, opaque);
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if (r) {
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THROW("failed %d", r);
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}
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}
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void Thread::join()
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{
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pthread_join(_thread, NULL);
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}
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static inline void rel_time(struct timespec& time, uint64_t delta_nano)
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{
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#ifdef WIN32
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struct _timeb now;
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_ftime_s(&now);
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time.tv_sec = (long)now.time;
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time.tv_nsec = now.millitm * 1000 * 1000;
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#elif defined(HAVE_CLOCK_GETTIME)
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clock_gettime(CLOCK_MONOTONIC, &time);
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#else
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struct timeval tv;
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gettimeofday(&tv,NULL);
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time.tv_sec = tv.tv_sec;
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time.tv_nsec = tv.tv_usec*1000;
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#endif
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delta_nano += (uint64_t)time.tv_sec * 1000 * 1000 * 1000;
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delta_nano += time.tv_nsec;
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time.tv_sec = long(delta_nano / (1000 * 1000 * 1000));
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time.tv_nsec = long(delta_nano % (1000 * 1000 * 1000));
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}
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void Lock::timed_lock(uint64_t timout_nano)
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{
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struct timespec time;
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int r;
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rel_time(time, timout_nano);
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if ((r = pthread_mutex_timedlock(_mutex.get(), &time))) {
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_locked = false;
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if (r != ETIMEDOUT) {
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THROW("failed %d", r);
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}
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return;
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}
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_locked = true;
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}
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Condition::Condition()
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{
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#ifdef WIN32
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pthread_cond_init(&_condition, NULL);
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#else
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pthread_condattr_t attr;
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pthread_condattr_init(&attr);
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int r;
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if ((r = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC))) {
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THROW("set clock failed %d", r);
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}
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pthread_cond_init(&_condition, &attr);
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pthread_condattr_destroy(&attr);
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#endif
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}
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bool Condition::timed_wait(Lock& lock, uint64_t nano)
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{
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struct timespec time;
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rel_time(time, nano);
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int r = pthread_cond_timedwait(&_condition, lock.get(), &time);
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if (r) {
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if (r != ETIMEDOUT) {
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THROW("failed %d", r);
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}
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return false;
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}
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return true;
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}
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Mutex::Mutex(Type type)
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{
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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if (type == NORMAL) {
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
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} else if (type == RECURSIVE) {
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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} else {
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THROW("invalid type %d", type);
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}
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int r;
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if ((r = pthread_mutex_init(&_mutex, &attr))) {
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THROW("int failed %d", r);
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}
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pthread_mutexattr_destroy(&attr);
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}
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Mutex::~Mutex()
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{
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pthread_mutex_destroy(&_mutex);
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}
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