| 1 | /* $Id: thread-win.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Threads, Win32.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #define LOG_GROUP RTLOGGROUP_THREAD
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| 36 | #include <Windows.h>
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| 37 |
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| 38 | #include <errno.h>
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| 39 | #include <process.h>
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| 40 |
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| 41 | #include <iprt/thread.h>
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| 42 | #include <iprt/log.h>
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| 43 | #include <iprt/assert.h>
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| 44 | #include <iprt/alloc.h>
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| 45 | #include <iprt/asm.h>
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| 46 | #include <iprt/err.h>
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| 47 | #include "internal/thread.h"
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| 48 |
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| 49 |
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| 50 | /*******************************************************************************
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| 51 | * Defined Constants And Macros *
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| 52 | *******************************************************************************/
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| 53 | /** The TLS index allocated for storing the RTTHREADINT pointer. */
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| 54 | static DWORD g_dwSelfTLS = TLS_OUT_OF_INDEXES;
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| 55 |
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| 56 |
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| 57 | /*******************************************************************************
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| 58 | * Internal Functions *
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| 59 | *******************************************************************************/
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| 60 | static unsigned __stdcall rtThreadNativeMain(void *pvArgs);
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| 61 |
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| 62 |
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| 63 | int rtThreadNativeInit(void)
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| 64 | {
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| 65 | g_dwSelfTLS = TlsAlloc();
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| 66 | if (g_dwSelfTLS == TLS_OUT_OF_INDEXES)
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| 67 | return VERR_NO_TLS_FOR_SELF;
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| 68 | return VINF_SUCCESS;
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| 69 | }
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| 70 |
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| 71 |
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| 72 | void rtThreadNativeDetach(void)
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| 73 | {
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| 74 | /*
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| 75 | * Deal with alien threads.
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| 76 | */
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| 77 | PRTTHREADINT pThread = (PRTTHREADINT)TlsGetValue(g_dwSelfTLS);
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| 78 | if ( pThread
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| 79 | && (pThread->fIntFlags & RTTHREADINT_FLAGS_ALIEN))
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| 80 | {
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| 81 | rtThreadTerminate(pThread, 0);
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| 82 | TlsSetValue(g_dwSelfTLS, NULL);
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| 83 | }
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| 84 | }
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| 85 |
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| 86 |
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| 87 | int rtThreadNativeAdopt(PRTTHREADINT pThread)
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| 88 | {
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| 89 | if (!TlsSetValue(g_dwSelfTLS, pThread))
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| 90 | return VERR_FAILED_TO_SET_SELF_TLS;
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| 91 | return VINF_SUCCESS;
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| 92 | }
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| 93 |
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| 94 |
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| 95 | /**
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| 96 | * Wrapper which unpacks the param stuff and calls thread function.
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| 97 | */
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| 98 | static unsigned __stdcall rtThreadNativeMain(void *pvArgs)
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| 99 | {
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| 100 | DWORD dwThreadId = GetCurrentThreadId();
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| 101 | PRTTHREADINT pThread = (PRTTHREADINT)pvArgs;
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| 102 |
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| 103 | if (!TlsSetValue(g_dwSelfTLS, pThread))
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| 104 | AssertReleaseMsgFailed(("failed to set self TLS. lasterr=%d thread '%s'\n", GetLastError(), pThread->szName));
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| 105 |
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| 106 | int rc = rtThreadMain(pThread, dwThreadId, &pThread->szName[0]);
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| 107 |
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| 108 | TlsSetValue(g_dwSelfTLS, NULL);
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| 109 | _endthreadex(rc);
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| 110 | return rc;
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| 111 | }
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| 112 |
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| 113 |
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| 114 | int rtThreadNativeCreate(PRTTHREADINT pThread, PRTNATIVETHREAD pNativeThread)
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| 115 | {
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| 116 | AssertReturn(pThread->cbStack < ~(unsigned)0, VERR_INVALID_PARAMETER);
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| 117 |
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| 118 | /*
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| 119 | * Create the thread.
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| 120 | */
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| 121 | pThread->hThread = (uintptr_t)INVALID_HANDLE_VALUE;
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| 122 | unsigned uThreadId = 0;
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| 123 | uintptr_t hThread = _beginthreadex(NULL, (unsigned)pThread->cbStack, rtThreadNativeMain, pThread, 0, &uThreadId);
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| 124 | if (hThread != 0 && hThread != ~0U)
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| 125 | {
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| 126 | pThread->hThread = hThread;
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| 127 | *pNativeThread = uThreadId;
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| 128 | return VINF_SUCCESS;
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| 129 | }
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| 130 | return RTErrConvertFromErrno(errno);
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| 131 | }
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| 132 |
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| 133 |
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| 134 | RTDECL(RTTHREAD) RTThreadSelf(void)
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| 135 | {
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| 136 | PRTTHREADINT pThread = (PRTTHREADINT)TlsGetValue(g_dwSelfTLS);
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| 137 | /** @todo import alien threads ? */
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| 138 | return pThread;
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| 139 | }
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| 140 |
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| 141 |
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| 142 | RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void)
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| 143 | {
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| 144 | return (RTNATIVETHREAD)GetCurrentThreadId();
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| 145 | }
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| 146 |
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| 147 |
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| 148 | RTR3DECL(int) RTThreadSleep(unsigned cMillies)
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| 149 | {
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| 150 | LogFlow(("RTThreadSleep: cMillies=%d\n", cMillies));
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| 151 | Sleep(cMillies);
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| 152 | LogFlow(("RTThreadSleep: returning %Vrc (cMillies=%d)\n", VINF_SUCCESS, cMillies));
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| 153 | return VINF_SUCCESS;
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| 154 | }
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| 155 |
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| 156 |
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| 157 | RTR3DECL(bool) RTThreadYield(void)
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| 158 | {
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| 159 | uint64_t u64TS = ASMReadTSC();
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| 160 | Sleep(0);
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| 161 | u64TS = ASMReadTSC() - u64TS;
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| 162 | bool fRc = u64TS > 1500;
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| 163 | LogFlow(("RTThreadYield: returning %d (%llu ticks)\n", fRc, u64TS));
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| 164 | return fRc;
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| 165 | }
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| 166 |
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| 167 |
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| 168 | #if 0 /* noone is using this ... */
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| 169 | /**
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| 170 | * Returns the processor number the current thread was running on during this call
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| 171 | *
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| 172 | * @returns processor nr
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| 173 | */
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| 174 | static int rtThreadGetCurrentProcessorNumber(void)
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| 175 | {
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| 176 | static bool fInitialized = false;
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| 177 | static DWORD (WINAPI *pfnGetCurrentProcessorNumber)(void) = NULL;
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| 178 | if (!fInitialized)
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| 179 | {
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| 180 | HMODULE hmodKernel32 = GetModuleHandle("KERNEL32.DLL");
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| 181 | if (hmodKernel32)
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| 182 | pfnGetCurrentProcessorNumber = (DWORD (WINAPI*)(void))GetProcAddress(hmodKernel32, "GetCurrentProcessorNumber");
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| 183 | fInitialized = true;
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| 184 | }
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| 185 | if (pfnGetCurrentProcessorNumber)
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| 186 | return pfnGetCurrentProcessorNumber();
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| 187 | return -1;
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| 188 | }
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| 189 | #endif
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| 190 |
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| 191 |
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| 192 | RTR3DECL(int) RTThreadSetAffinity(uint64_t u64Mask)
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| 193 | {
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| 194 | Assert((DWORD_PTR)u64Mask == u64Mask || u64Mask == ~(uint64_t)0);
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| 195 | DWORD dwRet = SetThreadAffinityMask(GetCurrentThread(), (DWORD_PTR)u64Mask);
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| 196 | if (dwRet)
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| 197 | return VINF_SUCCESS;
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| 198 |
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| 199 | int iLastError = GetLastError();
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| 200 | AssertMsgFailed(("SetThreadAffinityMask failed, LastError=%d\n", iLastError));
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| 201 | return RTErrConvertFromWin32(iLastError);
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| 202 | }
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| 203 |
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| 204 |
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| 205 | RTR3DECL(uint64_t) RTThreadGetAffinity(void)
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| 206 | {
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| 207 | /*
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| 208 | * Haven't found no query api, but the set api returns the old mask, so let's use that.
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| 209 | */
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| 210 | DWORD_PTR dwIgnored;
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| 211 | DWORD_PTR dwProcAff = 0;
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| 212 | if (GetProcessAffinityMask(GetCurrentProcess(), &dwProcAff, &dwIgnored))
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| 213 | {
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| 214 | HANDLE hThread = GetCurrentThread();
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| 215 | DWORD dwRet = SetThreadAffinityMask(hThread, dwProcAff);
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| 216 | if (dwRet)
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| 217 | {
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| 218 | DWORD dwSet = SetThreadAffinityMask(hThread, dwRet);
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| 219 | Assert(dwSet == dwProcAff); NOREF(dwRet);
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| 220 | return dwRet;
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| 221 | }
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| 222 | }
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| 223 |
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| 224 | int iLastError = GetLastError();
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| 225 | AssertMsgFailed(("SetThreadAffinityMask or GetProcessAffinityMask failed, LastError=%d\n", iLastError));
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| 226 | return RTErrConvertFromWin32(iLastError);
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| 227 | }
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| 228 |
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