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/**
* WinPR: Windows Portable Runtime
* Thread Pool API (Callback Clean-up)
*
* 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.
*/
#include <winpr/config.h>
#include <winpr/crt.h>
#include <winpr/pool.h>
#include <winpr/library.h>
#include "pool.h"
#ifdef WINPR_THREAD_POOL
#ifdef _WIN32
static INIT_ONCE init_once_module = INIT_ONCE_STATIC_INIT;
static VOID(WINAPI* pSetEventWhenCallbackReturns)(PTP_CALLBACK_INSTANCE pci, HANDLE evt);
static VOID(WINAPI* pReleaseSemaphoreWhenCallbackReturns)(PTP_CALLBACK_INSTANCE pci, HANDLE sem,
DWORD crel);
static VOID(WINAPI* pReleaseMutexWhenCallbackReturns)(PTP_CALLBACK_INSTANCE pci, HANDLE mut);
static VOID(WINAPI* pLeaveCriticalSectionWhenCallbackReturns)(PTP_CALLBACK_INSTANCE pci,
PCRITICAL_SECTION pcs);
static VOID(WINAPI* pFreeLibraryWhenCallbackReturns)(PTP_CALLBACK_INSTANCE pci, HMODULE mod);
static VOID(WINAPI* pDisassociateCurrentThreadFromCallback)(PTP_CALLBACK_INSTANCE pci);
static BOOL CALLBACK init_module(PINIT_ONCE once, PVOID param, PVOID* context)
{
HMODULE kernel32 = LoadLibraryA("kernel32.dll");
if (kernel32)
{
pSetEventWhenCallbackReturns =
(void*)GetProcAddress(kernel32, "SetEventWhenCallbackReturns");
pReleaseSemaphoreWhenCallbackReturns =
(void*)GetProcAddress(kernel32, "ReleaseSemaphoreWhenCallbackReturns");
pReleaseMutexWhenCallbackReturns =
(void*)GetProcAddress(kernel32, "ReleaseMutexWhenCallbackReturns");
pLeaveCriticalSectionWhenCallbackReturns =
(void*)GetProcAddress(kernel32, "LeaveCriticalSectionWhenCallbackReturns");
pFreeLibraryWhenCallbackReturns =
(void*)GetProcAddress(kernel32, "FreeLibraryWhenCallbackReturns");
pDisassociateCurrentThreadFromCallback =
(void*)GetProcAddress(kernel32, "DisassociateCurrentThreadFromCallback");
}
return TRUE;
}
#endif
VOID SetEventWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, HANDLE evt)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pSetEventWhenCallbackReturns)
{
pSetEventWhenCallbackReturns(pci, evt);
return;
}
#endif
/* No default implementation */
}
VOID ReleaseSemaphoreWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, HANDLE sem, DWORD crel)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pReleaseSemaphoreWhenCallbackReturns)
{
pReleaseSemaphoreWhenCallbackReturns(pci, sem, crel);
return;
}
#endif
/* No default implementation */
}
VOID ReleaseMutexWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, HANDLE mut)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pReleaseMutexWhenCallbackReturns)
{
pReleaseMutexWhenCallbackReturns(pci, mut);
return;
}
#endif
/* No default implementation */
}
VOID LeaveCriticalSectionWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, PCRITICAL_SECTION pcs)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pLeaveCriticalSectionWhenCallbackReturns)
{
pLeaveCriticalSectionWhenCallbackReturns(pci, pcs);
}
#endif
/* No default implementation */
}
VOID FreeLibraryWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, HMODULE mod)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pFreeLibraryWhenCallbackReturns)
{
pFreeLibraryWhenCallbackReturns(pci, mod);
return;
}
#endif
/* No default implementation */
}
VOID DisassociateCurrentThreadFromCallback(PTP_CALLBACK_INSTANCE pci)
{
#ifdef _WIN32
InitOnceExecuteOnce(&init_once_module, init_module, NULL, NULL);
if (pDisassociateCurrentThreadFromCallback)
{
pDisassociateCurrentThreadFromCallback(pci);
return;
}
#endif
/* No default implementation */
}
#endif /* WINPR_THREAD_POOL defined */
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