mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-06 13:01:03 +00:00
292 lines
7.1 KiB
C
292 lines
7.1 KiB
C
/* Threads.c -- multithreading library
|
|
2008-08-05
|
|
Igor Pavlov
|
|
Public domain */
|
|
|
|
#include "Threads.h"
|
|
|
|
#ifdef _WIN32
|
|
#include <process.h>
|
|
|
|
static WRes GetError()
|
|
{
|
|
DWORD res = GetLastError();
|
|
return (res) ? (WRes)(res) : 1;
|
|
}
|
|
|
|
WRes HandleToWRes(HANDLE h) { return (h != 0) ? 0 : GetError(); }
|
|
WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); }
|
|
|
|
static WRes MyCloseHandle(HANDLE *h)
|
|
{
|
|
if (*h != NULL)
|
|
if (!CloseHandle(*h))
|
|
return GetError();
|
|
*h = NULL;
|
|
return 0;
|
|
}
|
|
|
|
WRes Thread_Create(CThread *thread, THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE *startAddress)(void *), LPVOID parameter)
|
|
{
|
|
unsigned threadId; /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */
|
|
thread->handle =
|
|
/* CreateThread(0, 0, startAddress, parameter, 0, &threadId); */
|
|
(HANDLE)_beginthreadex(NULL, 0, startAddress, parameter, 0, &threadId);
|
|
/* maybe we must use errno here, but probably GetLastError() is also OK. */
|
|
return HandleToWRes(thread->handle);
|
|
}
|
|
|
|
WRes WaitObject(HANDLE h)
|
|
{
|
|
return (WRes)WaitForSingleObject(h, INFINITE);
|
|
}
|
|
|
|
WRes Thread_Wait(CThread *thread)
|
|
{
|
|
if (thread->handle == NULL)
|
|
return 1;
|
|
return WaitObject(thread->handle);
|
|
}
|
|
|
|
WRes Thread_Close(CThread *thread)
|
|
{
|
|
return MyCloseHandle(&thread->handle);
|
|
}
|
|
|
|
WRes Event_Create(CEvent *p, BOOL manualReset, int initialSignaled)
|
|
{
|
|
p->handle = CreateEvent(NULL, manualReset, (initialSignaled ? TRUE : FALSE), NULL);
|
|
return HandleToWRes(p->handle);
|
|
}
|
|
|
|
WRes ManualResetEvent_Create(CManualResetEvent *p, int initialSignaled)
|
|
{ return Event_Create(p, TRUE, initialSignaled); }
|
|
WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p)
|
|
{ return ManualResetEvent_Create(p, 0); }
|
|
|
|
WRes AutoResetEvent_Create(CAutoResetEvent *p, int initialSignaled)
|
|
{ return Event_Create(p, FALSE, initialSignaled); }
|
|
WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p)
|
|
{ return AutoResetEvent_Create(p, 0); }
|
|
|
|
WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(p->handle)); }
|
|
WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(p->handle)); }
|
|
WRes Event_Wait(CEvent *p) { return WaitObject(p->handle); }
|
|
WRes Event_Close(CEvent *p) { return MyCloseHandle(&p->handle); }
|
|
|
|
|
|
WRes Semaphore_Create(CSemaphore *p, UInt32 initiallyCount, UInt32 maxCount)
|
|
{
|
|
p->handle = CreateSemaphore(NULL, (LONG)initiallyCount, (LONG)maxCount, NULL);
|
|
return HandleToWRes(p->handle);
|
|
}
|
|
|
|
WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)
|
|
{
|
|
return BOOLToWRes(ReleaseSemaphore(p->handle, releaseCount, previousCount));
|
|
}
|
|
WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 releaseCount)
|
|
{
|
|
return Semaphore_Release(p, (LONG)releaseCount, NULL);
|
|
}
|
|
WRes Semaphore_Release1(CSemaphore *p)
|
|
{
|
|
return Semaphore_ReleaseN(p, 1);
|
|
}
|
|
|
|
WRes Semaphore_Wait(CSemaphore *p) { return WaitObject(p->handle); }
|
|
WRes Semaphore_Close(CSemaphore *p) { return MyCloseHandle(&p->handle); }
|
|
|
|
WRes CriticalSection_Init(CCriticalSection *p)
|
|
{
|
|
/* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */
|
|
#ifndef __GNUC__
|
|
__try
|
|
#endif
|
|
{
|
|
InitializeCriticalSection(p);
|
|
/* InitializeCriticalSectionAndSpinCount(p, 0); */
|
|
}
|
|
#ifndef __GNUC__
|
|
__except (EXCEPTION_EXECUTE_HANDLER) { return 1; }
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
#include <pthread.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#if defined(__linux__)
|
|
#define PTHREAD_MUTEX_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK_NP
|
|
#endif
|
|
|
|
|
|
WRes Thread_Create(CThread *thread, THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE *startAddress)(void *), void *parameter)
|
|
{
|
|
pthread_attr_t attr;
|
|
int ret;
|
|
|
|
thread->_created = 0;
|
|
|
|
ret = pthread_attr_init(&attr);
|
|
if (ret) return ret;
|
|
|
|
ret = pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_JOINABLE);
|
|
if (ret) return ret;
|
|
|
|
ret = pthread_create(&thread->_tid, &attr, (void * (*)(void *))startAddress, parameter);
|
|
|
|
/* ret2 = */ pthread_attr_destroy(&attr);
|
|
|
|
if (ret) return ret;
|
|
|
|
thread->_created = 1;
|
|
|
|
return 0; // SZ_OK;
|
|
}
|
|
|
|
WRes Thread_Wait(CThread *thread)
|
|
{
|
|
void *thread_return;
|
|
int ret;
|
|
|
|
if (thread->_created == 0)
|
|
return EINVAL;
|
|
|
|
ret = pthread_join(thread->_tid,&thread_return);
|
|
thread->_created = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
WRes Thread_Close(CThread *thread)
|
|
{
|
|
if (!thread->_created) return SZ_OK;
|
|
|
|
pthread_detach(thread->_tid);
|
|
thread->_tid = 0;
|
|
thread->_created = 0;
|
|
return SZ_OK;
|
|
}
|
|
|
|
WRes Event_Create(CEvent *p, BOOL manualReset, int initialSignaled)
|
|
{
|
|
pthread_mutex_init(&p->_mutex,0);
|
|
pthread_cond_init(&p->_cond,0);
|
|
p->_manual_reset = manualReset;
|
|
p->_state = (initialSignaled ? TRUE : FALSE);
|
|
p->_created = 1;
|
|
return 0;
|
|
}
|
|
|
|
WRes Event_Set(CEvent *p) {
|
|
pthread_mutex_lock(&p->_mutex);
|
|
p->_state = TRUE;
|
|
pthread_cond_broadcast(&p->_cond);
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return 0;
|
|
}
|
|
|
|
WRes Event_Reset(CEvent *p) {
|
|
pthread_mutex_lock(&p->_mutex);
|
|
p->_state = FALSE;
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return 0;
|
|
}
|
|
|
|
WRes Event_Wait(CEvent *p) {
|
|
pthread_mutex_lock(&p->_mutex);
|
|
while (p->_state == FALSE)
|
|
{
|
|
pthread_cond_wait(&p->_cond, &p->_mutex);
|
|
}
|
|
if (p->_manual_reset == FALSE)
|
|
{
|
|
p->_state = FALSE;
|
|
}
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return 0;
|
|
}
|
|
|
|
WRes Event_Close(CEvent *p) {
|
|
if (p->_created)
|
|
{
|
|
p->_created = 0;
|
|
pthread_mutex_destroy(&p->_mutex);
|
|
pthread_cond_destroy(&p->_cond);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
WRes Semaphore_Create(CSemaphore *p, UInt32 initiallyCount, UInt32 maxCount)
|
|
{
|
|
pthread_mutex_init(&p->_mutex,0);
|
|
pthread_cond_init(&p->_cond,0);
|
|
p->_count = initiallyCount;
|
|
p->_maxCount = maxCount;
|
|
p->_created = 1;
|
|
return 0;
|
|
}
|
|
|
|
WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 releaseCount)
|
|
{
|
|
UInt32 newCount;
|
|
|
|
if (releaseCount < 1) return EINVAL;
|
|
|
|
pthread_mutex_lock(&p->_mutex);
|
|
|
|
newCount = p->_count + releaseCount;
|
|
if (newCount > p->_maxCount)
|
|
{
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return EINVAL;
|
|
}
|
|
p->_count = newCount;
|
|
pthread_cond_broadcast(&p->_cond);
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return 0;
|
|
}
|
|
|
|
WRes Semaphore_Wait(CSemaphore *p) {
|
|
pthread_mutex_lock(&p->_mutex);
|
|
while (p->_count < 1)
|
|
{
|
|
pthread_cond_wait(&p->_cond, &p->_mutex);
|
|
}
|
|
p->_count--;
|
|
pthread_mutex_unlock(&p->_mutex);
|
|
return 0;
|
|
}
|
|
|
|
WRes Semaphore_Close(CSemaphore *p) {
|
|
if (p->_created)
|
|
{
|
|
p->_created = 0;
|
|
pthread_mutex_destroy(&p->_mutex);
|
|
pthread_cond_destroy(&p->_cond);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
WRes CriticalSection_Init(CCriticalSection * lpCriticalSection)
|
|
{
|
|
return pthread_mutex_init(&(lpCriticalSection->_mutex),0);
|
|
}
|
|
|
|
WRes ManualResetEvent_Create(CManualResetEvent *p, int initialSignaled)
|
|
{ return Event_Create(p, TRUE, initialSignaled); }
|
|
|
|
WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p)
|
|
{ return ManualResetEvent_Create(p, 0); }
|
|
|
|
WRes AutoResetEvent_Create(CAutoResetEvent *p, int initialSignaled)
|
|
{ return Event_Create(p, FALSE, initialSignaled); }
|
|
WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p)
|
|
{ return AutoResetEvent_Create(p, 0); }
|
|
|
|
#endif
|