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//
// Thread_WIN32.h
//
// Library: Foundation
// Package: Threading
// Module: Thread
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Thread_WIN32.h"
#include "Poco/Exception.h"
#include "Poco/ErrorHandler.h"
#include <process.h>
#if defined(POCO_WIN32_DEBUGGER_THREAD_NAMES)
namespace
{
/// See <http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx>
/// and <http://blogs.msdn.com/b/stevejs/archive/2005/12/19/505815.aspx> for
/// more information on the code below.
const DWORD MS_VC_EXCEPTION = 0x406D1388;
#pragma pack(push,8)
typedef struct tagTHREADNAME_INFO
{
DWORD dwType; // Must be 0x1000.
LPCSTR szName; // Pointer to name (in user addr space).
DWORD dwThreadID; // Thread ID (-1=caller thread).
DWORD dwFlags; // Reserved for future use, must be zero.
} THREADNAME_INFO;
#pragma pack(pop)
void setThreadName(DWORD dwThreadID, const char* threadName)
{
THREADNAME_INFO info;
info.dwType = 0x1000;
info.szName = threadName;
info.dwThreadID = dwThreadID;
info.dwFlags = 0;
__try
{
RaiseException(MS_VC_EXCEPTION, 0, sizeof(info)/sizeof(ULONG_PTR), (ULONG_PTR*)&info);
}
__except (EXCEPTION_CONTINUE_EXECUTION)
{
}
}
}
#endif
namespace Poco {
ThreadImpl::CurrentThreadHolder ThreadImpl::_currentThreadHolder;
ThreadImpl::ThreadImpl():
_thread(0),
_threadId(0),
_prio(PRIO_NORMAL_IMPL),
_stackSize(POCO_THREAD_STACK_SIZE)
{
}
ThreadImpl::~ThreadImpl()
{
if (_thread) CloseHandle(_thread);
}
void ThreadImpl::setPriorityImpl(int prio)
{
if (prio != _prio)
{
_prio = prio;
if (_thread)
{
if (SetThreadPriority(_thread, _prio) == 0)
throw SystemException("cannot set thread priority");
}
}
}
void ThreadImpl::setOSPriorityImpl(int prio, int /* policy */)
{
setPriorityImpl(prio);
}
void ThreadImpl::startImpl(SharedPtr<Runnable> pTarget)
{
if (isRunningImpl())
throw SystemException("thread already running");
_pRunnableTarget = pTarget;
createImpl(runnableEntry, this);
}
void ThreadImpl::createImpl(Entry ent, void* pData)
{
#if defined(_DLL)
_thread = CreateThread(NULL, _stackSize, ent, pData, 0, &_threadId);
#else
unsigned threadId;
_thread = (HANDLE) _beginthreadex(NULL, _stackSize, ent, this, 0, &threadId);
_threadId = static_cast<DWORD>(threadId);
#endif
if (!_thread)
throw SystemException("cannot create thread");
if (_prio != PRIO_NORMAL_IMPL && !SetThreadPriority(_thread, _prio))
throw SystemException("cannot set thread priority");
}
void ThreadImpl::joinImpl()
{
if (!_thread) return;
switch (WaitForSingleObject(_thread, INFINITE))
{
case WAIT_OBJECT_0:
threadCleanup();
return;
default:
throw SystemException("cannot join thread");
}
}
bool ThreadImpl::joinImpl(long milliseconds)
{
if (!_thread) return true;
switch (WaitForSingleObject(_thread, milliseconds + 1))
{
case WAIT_TIMEOUT:
return false;
case WAIT_OBJECT_0:
threadCleanup();
return true;
default:
throw SystemException("cannot join thread");
}
}
bool ThreadImpl::isRunningImpl() const
{
if (_thread)
{
DWORD ec = 0;
return GetExitCodeThread(_thread, &ec) && ec == STILL_ACTIVE;
}
return false;
}
void ThreadImpl::threadCleanup()
{
if (!_thread) return;
if (CloseHandle(_thread)) _thread = 0;
}
ThreadImpl* ThreadImpl::currentImpl()
{
return _currentThreadHolder.get();
}
ThreadImpl::TIDImpl ThreadImpl::currentTidImpl()
{
return GetCurrentThreadId();
}
#if defined(_DLL)
DWORD WINAPI ThreadImpl::runnableEntry(LPVOID pThread)
#else
unsigned __stdcall ThreadImpl::runnableEntry(void* pThread)
#endif
{
_currentThreadHolder.set(reinterpret_cast<ThreadImpl*>(pThread));
#if defined(POCO_WIN32_DEBUGGER_THREAD_NAMES)
setThreadName(-1, reinterpret_cast<Thread*>(pThread)->getName().c_str());
#endif
try
{
reinterpret_cast<ThreadImpl*>(pThread)->_pRunnableTarget->run();
}
catch (Exception& exc)
{
ErrorHandler::handle(exc);
}
catch (std::exception& exc)
{
ErrorHandler::handle(exc);
}
catch (...)
{
ErrorHandler::handle();
}
return 0;
}
} // namespace Poco
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