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/* $Id: thread-win.cpp 13837 2008-11-05 02:54:02Z vboxsync $ */
/** @file
* IPRT - Threads, Win32.
*/
/*
* Copyright (C) 2006-2007 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_THREAD
#include <Windows.h>
#include <errno.h>
#include <process.h>
#include <iprt/thread.h>
#include <iprt/log.h>
#include <iprt/assert.h>
#include <iprt/alloc.h>
#include <iprt/asm.h>
#include <iprt/err.h>
#include "internal/thread.h"
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
/** The TLS index allocated for storing the RTTHREADINT pointer. */
static DWORD g_dwSelfTLS = TLS_OUT_OF_INDEXES;
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
static unsigned __stdcall rtThreadNativeMain(void *pvArgs);
int rtThreadNativeInit(void)
{
g_dwSelfTLS = TlsAlloc();
if (g_dwSelfTLS == TLS_OUT_OF_INDEXES)
return VERR_NO_TLS_FOR_SELF;
return VINF_SUCCESS;
}
void rtThreadNativeDetach(void)
{
/*
* Deal with alien threads.
*/
PRTTHREADINT pThread = (PRTTHREADINT)TlsGetValue(g_dwSelfTLS);
if ( pThread
&& (pThread->fIntFlags & RTTHREADINT_FLAGS_ALIEN))
{
rtThreadTerminate(pThread, 0);
TlsSetValue(g_dwSelfTLS, NULL);
}
}
int rtThreadNativeAdopt(PRTTHREADINT pThread)
{
if (!TlsSetValue(g_dwSelfTLS, pThread))
return VERR_FAILED_TO_SET_SELF_TLS;
return VINF_SUCCESS;
}
/**
* Wrapper which unpacks the param stuff and calls thread function.
*/
static unsigned __stdcall rtThreadNativeMain(void *pvArgs)
{
DWORD dwThreadId = GetCurrentThreadId();
PRTTHREADINT pThread = (PRTTHREADINT)pvArgs;
if (!TlsSetValue(g_dwSelfTLS, pThread))
AssertReleaseMsgFailed(("failed to set self TLS. lasterr=%d thread '%s'\n", GetLastError(), pThread->szName));
int rc = rtThreadMain(pThread, dwThreadId, &pThread->szName[0]);
TlsSetValue(g_dwSelfTLS, NULL);
_endthreadex(rc);
return rc;
}
int rtThreadNativeCreate(PRTTHREADINT pThread, PRTNATIVETHREAD pNativeThread)
{
AssertReturn(pThread->cbStack < ~(unsigned)0, VERR_INVALID_PARAMETER);
/*
* Create the thread.
*/
pThread->hThread = (uintptr_t)INVALID_HANDLE_VALUE;
unsigned uThreadId = 0;
uintptr_t hThread = _beginthreadex(NULL, (unsigned)pThread->cbStack, rtThreadNativeMain, pThread, 0, &uThreadId);
if (hThread != 0 && hThread != ~0U)
{
pThread->hThread = hThread;
*pNativeThread = uThreadId;
return VINF_SUCCESS;
}
return RTErrConvertFromErrno(errno);
}
RTDECL(RTTHREAD) RTThreadSelf(void)
{
PRTTHREADINT pThread = (PRTTHREADINT)TlsGetValue(g_dwSelfTLS);
/** @todo import alien threads ? */
return pThread;
}
RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void)
{
return (RTNATIVETHREAD)GetCurrentThreadId();
}
RTR3DECL(int) RTThreadSleep(unsigned cMillies)
{
LogFlow(("RTThreadSleep: cMillies=%d\n", cMillies));
Sleep(cMillies);
LogFlow(("RTThreadSleep: returning %Rrc (cMillies=%d)\n", VINF_SUCCESS, cMillies));
return VINF_SUCCESS;
}
RTR3DECL(bool) RTThreadYield(void)
{
uint64_t u64TS = ASMReadTSC();
Sleep(0);
u64TS = ASMReadTSC() - u64TS;
bool fRc = u64TS > 1500;
LogFlow(("RTThreadYield: returning %d (%llu ticks)\n", fRc, u64TS));
return fRc;
}
#if 0 /* noone is using this ... */
/**
* Returns the processor number the current thread was running on during this call
*
* @returns processor nr
*/
static int rtThreadGetCurrentProcessorNumber(void)
{
static bool fInitialized = false;
static DWORD (WINAPI *pfnGetCurrentProcessorNumber)(void) = NULL;
if (!fInitialized)
{
HMODULE hmodKernel32 = GetModuleHandle("KERNEL32.DLL");
if (hmodKernel32)
pfnGetCurrentProcessorNumber = (DWORD (WINAPI*)(void))GetProcAddress(hmodKernel32, "GetCurrentProcessorNumber");
fInitialized = true;
}
if (pfnGetCurrentProcessorNumber)
return pfnGetCurrentProcessorNumber();
return -1;
}
#endif
RTR3DECL(int) RTThreadSetAffinity(uint64_t u64Mask)
{
Assert((DWORD_PTR)u64Mask == u64Mask || u64Mask == ~(uint64_t)0);
DWORD dwRet = SetThreadAffinityMask(GetCurrentThread(), (DWORD_PTR)u64Mask);
if (dwRet)
return VINF_SUCCESS;
int iLastError = GetLastError();
AssertMsgFailed(("SetThreadAffinityMask failed, LastError=%d\n", iLastError));
return RTErrConvertFromWin32(iLastError);
}
RTR3DECL(uint64_t) RTThreadGetAffinity(void)
{
/*
* Haven't found no query api, but the set api returns the old mask, so let's use that.
*/
DWORD_PTR dwIgnored;
DWORD_PTR dwProcAff = 0;
if (GetProcessAffinityMask(GetCurrentProcess(), &dwProcAff, &dwIgnored))
{
HANDLE hThread = GetCurrentThread();
DWORD dwRet = SetThreadAffinityMask(hThread, dwProcAff);
if (dwRet)
{
DWORD dwSet = SetThreadAffinityMask(hThread, dwRet);
Assert(dwSet == dwProcAff); NOREF(dwRet);
return dwRet;
}
}
int iLastError = GetLastError();
AssertMsgFailed(("SetThreadAffinityMask or GetProcessAffinityMask failed, LastError=%d\n", iLastError));
return RTErrConvertFromWin32(iLastError);
}
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