Bochs/bochs/bxthread.cc

111 lines
2.9 KiB
C++

/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2017-2021 The Bochs Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
/////////////////////////////////////////////////////////////////////////
#include "bochs.h"
#include "bxthread.h"
// Bochs multi-threading support
void bx_create_event(bx_thread_event_t *thread_ev)
{
#if defined(WIN32)
thread_ev->event = CreateEvent(NULL, FALSE, FALSE, "event");
#else
pthread_cond_init(&thread_ev->cond, NULL);
pthread_mutex_init(&thread_ev->lock, NULL);
#endif
}
void bx_destroy_event(bx_thread_event_t *thread_ev)
{
#if defined(WIN32)
CloseHandle(thread_ev->event);
#else
pthread_cond_destroy(&thread_ev->cond);
pthread_mutex_destroy(&thread_ev->lock);
#endif
}
void bx_set_event(bx_thread_event_t *thread_ev)
{
#if defined(WIN32)
SetEvent(thread_ev->event);
#else
pthread_mutex_lock(&thread_ev->lock);
pthread_cond_signal(&thread_ev->cond);
pthread_mutex_unlock(&thread_ev->lock);
#endif
}
bool bx_wait_for_event(bx_thread_event_t *thread_ev)
{
#if defined(WIN32)
if (WaitForSingleObject(thread_ev->event, 1) == WAIT_OBJECT_0) {
return 1;
} else {
return 0;
}
#else
pthread_mutex_lock(&thread_ev->lock);
pthread_cond_wait(&thread_ev->cond, &thread_ev->lock);
pthread_mutex_unlock(&thread_ev->lock);
return 1;
#endif
}
bool BOCHSAPI_MSVCONLY bx_create_sem(bx_thread_sem_t *thread_sem)
{
#if defined(WIN32)
thread_sem->sem = CreateSemaphore(NULL, 0, 1, NULL);
return thread_sem->sem != NULL;
#else
int ret = sem_init(&thread_sem->sem, 0, 0);
return ret == 0;
#endif
}
void BOCHSAPI_MSVCONLY bx_destroy_sem(bx_thread_sem_t *thread_sem)
{
#if defined(WIN32)
CloseHandle(thread_sem->sem);
#else
sem_destroy(&thread_sem->sem);
#endif
}
void BOCHSAPI_MSVCONLY bx_wait_sem(bx_thread_sem_t *thread_sem)
{
#if defined(WIN32)
WaitForSingleObject(thread_sem->sem, INFINITE);
#else
sem_wait(&thread_sem->sem);
#endif
}
void BOCHSAPI_MSVCONLY bx_set_sem(bx_thread_sem_t *thread_sem)
{
#if defined(WIN32)
ReleaseSemaphore(thread_sem->sem, 1, NULL);
#else
sem_post(&thread_sem->sem);
#endif
}