27c439675f
Depending on the windows target version (_WIN32_WINNT), the used SDK and the build configuration the linker will see multiple libraries exporting the same symbols. To prevent ugly hacks (e.g. modifying cmake's default system libraries or fragile library linking order chains) we prefix these functions with "winpr_" and create corresponding defines to keep the current api names.
161 lines
4.5 KiB
C
161 lines
4.5 KiB
C
/**
|
|
* WinPR: Windows Portable Runtime
|
|
* Thread Pool API (Work)
|
|
*
|
|
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <winpr/crt.h>
|
|
#include <winpr/pool.h>
|
|
#include <winpr/library.h>
|
|
|
|
#include "pool.h"
|
|
#include "../log.h"
|
|
#define TAG WINPR_TAG("pool")
|
|
|
|
#ifdef WINPR_THREAD_POOL
|
|
|
|
#ifdef _WIN32
|
|
static INIT_ONCE init_once_module = INIT_ONCE_STATIC_INIT;
|
|
static PTP_WORK(WINAPI* pCreateThreadpoolWork)(PTP_WORK_CALLBACK pfnwk, PVOID pv, PTP_CALLBACK_ENVIRON pcbe);
|
|
static VOID (WINAPI* pCloseThreadpoolWork)(PTP_WORK pwk);
|
|
static VOID (WINAPI* pSubmitThreadpoolWork)(PTP_WORK pwk);
|
|
static BOOL (WINAPI* pTrySubmitThreadpoolCallback)(PTP_SIMPLE_CALLBACK pfns, PVOID pv, PTP_CALLBACK_ENVIRON pcbe);
|
|
static VOID (WINAPI* pWaitForThreadpoolWorkCallbacks)(PTP_WORK pwk, BOOL fCancelPendingCallbacks);
|
|
|
|
static BOOL CALLBACK init_module(PINIT_ONCE once, PVOID param, PVOID *context)
|
|
{
|
|
HMODULE kernel32 = LoadLibraryA("kernel32.dll");
|
|
if (kernel32)
|
|
{
|
|
pCreateThreadpoolWork = (void*)GetProcAddress(kernel32, "CreateThreadpoolWork");
|
|
pCloseThreadpoolWork = (void*)GetProcAddress(kernel32, "CloseThreadpoolWork");
|
|
pSubmitThreadpoolWork = (void*)GetProcAddress(kernel32, "SubmitThreadpoolWork");
|
|
pTrySubmitThreadpoolCallback = (void*)GetProcAddress(kernel32, "TrySubmitThreadpoolCallback");
|
|
pWaitForThreadpoolWorkCallbacks = (void*)GetProcAddress(kernel32, "WaitForThreadpoolWorkCallbacks");
|
|
}
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
static TP_CALLBACK_ENVIRON DEFAULT_CALLBACK_ENVIRONMENT =
|
|
{
|
|
1, /* Version */
|
|
NULL, /* Pool */
|
|
NULL, /* CleanupGroup */
|
|
NULL, /* CleanupGroupCancelCallback */
|
|
NULL, /* RaceDll */
|
|
NULL, /* ActivationContext */
|
|
NULL, /* FinalizationCallback */
|
|
{ 0 } /* Flags */
|
|
};
|
|
|
|
PTP_WORK winpr_CreateThreadpoolWork(PTP_WORK_CALLBACK pfnwk, PVOID pv, PTP_CALLBACK_ENVIRON pcbe)
|
|
{
|
|
PTP_WORK work = NULL;
|
|
#ifdef _WIN32
|
|
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
|
|
if (pCreateThreadpoolWork)
|
|
return pCreateThreadpoolWork(pfnwk, pv, pcbe);
|
|
#endif
|
|
work = (PTP_WORK) malloc(sizeof(TP_WORK));
|
|
|
|
if (work)
|
|
{
|
|
if (!pcbe)
|
|
{
|
|
pcbe = &DEFAULT_CALLBACK_ENVIRONMENT;
|
|
pcbe->Pool = GetDefaultThreadpool();
|
|
}
|
|
work->CallbackEnvironment = pcbe;
|
|
work->WorkCallback = pfnwk;
|
|
work->CallbackParameter = pv;
|
|
}
|
|
|
|
return work;
|
|
}
|
|
|
|
VOID winpr_CloseThreadpoolWork(PTP_WORK pwk)
|
|
{
|
|
#ifdef _WIN32
|
|
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
|
|
if (pCloseThreadpoolWork)
|
|
{
|
|
pCloseThreadpoolWork(pwk);
|
|
return;
|
|
}
|
|
#endif
|
|
free(pwk);
|
|
}
|
|
|
|
VOID winpr_SubmitThreadpoolWork(PTP_WORK pwk)
|
|
{
|
|
PTP_POOL pool;
|
|
PTP_CALLBACK_INSTANCE callbackInstance;
|
|
#ifdef _WIN32
|
|
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
|
|
if (pSubmitThreadpoolWork)
|
|
{
|
|
pSubmitThreadpoolWork(pwk);
|
|
return;
|
|
}
|
|
#endif
|
|
pool = pwk->CallbackEnvironment->Pool;
|
|
callbackInstance = (PTP_CALLBACK_INSTANCE) malloc(sizeof(TP_CALLBACK_INSTANCE));
|
|
|
|
if (callbackInstance)
|
|
{
|
|
callbackInstance->Work = pwk;
|
|
CountdownEvent_AddCount(pool->WorkComplete, 1);
|
|
Queue_Enqueue(pool->PendingQueue, callbackInstance);
|
|
}
|
|
}
|
|
|
|
BOOL winpr_TrySubmitThreadpoolCallback(PTP_SIMPLE_CALLBACK pfns, PVOID pv, PTP_CALLBACK_ENVIRON pcbe)
|
|
{
|
|
#ifdef _WIN32
|
|
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
|
|
if (pTrySubmitThreadpoolCallback)
|
|
return pTrySubmitThreadpoolCallback(pfns, pv, pcbe);
|
|
#endif
|
|
WLog_ERR(TAG, "TrySubmitThreadpoolCallback is not implemented");
|
|
return FALSE;
|
|
}
|
|
|
|
VOID winpr_WaitForThreadpoolWorkCallbacks(PTP_WORK pwk, BOOL fCancelPendingCallbacks)
|
|
{
|
|
HANDLE event;
|
|
PTP_POOL pool;
|
|
#ifdef _WIN32
|
|
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
|
|
if (pWaitForThreadpoolWorkCallbacks)
|
|
{
|
|
pWaitForThreadpoolWorkCallbacks(pwk, fCancelPendingCallbacks);
|
|
return;
|
|
}
|
|
#endif
|
|
pool = pwk->CallbackEnvironment->Pool;
|
|
event = CountdownEvent_WaitHandle(pool->WorkComplete);
|
|
|
|
if (WaitForSingleObject(event, INFINITE) != WAIT_OBJECT_0)
|
|
WLog_ERR(TAG, "error waiting on work completion");
|
|
}
|
|
|
|
#endif /* WINPR_THREAD_POOL defined */
|