| 1 | /* $Id: tls-win.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Thread Local Storage (TLS), Win32.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2008 Oracle Corporation
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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 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_THREAD
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| 32 | #include <Windows.h>
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| 33 |
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| 34 | #include <iprt/thread.h>
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| 35 | #include <iprt/log.h>
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| 36 | #include <iprt/assert.h>
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| 37 | #include <iprt/err.h>
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| 38 | #include "internal/thread.h"
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| 39 |
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| 40 |
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| 41 | AssertCompile(sizeof(RTTLS) >= sizeof(DWORD));
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| 42 |
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| 43 |
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| 44 | RTR3DECL(RTTLS) RTTlsAlloc(void)
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| 45 | {
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| 46 | DWORD iTls = TlsAlloc();
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| 47 | return iTls != TLS_OUT_OF_INDEXES ? (RTTLS)iTls : NIL_RTTLS;
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| 48 | }
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| 49 |
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| 50 |
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| 51 | RTR3DECL(int) RTTlsAllocEx(PRTTLS piTls, PFNRTTLSDTOR pfnDestructor)
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| 52 | {
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| 53 | AssertReturn(!pfnDestructor, VERR_NOT_SUPPORTED);
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| 54 | DWORD iTls = TlsAlloc();
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| 55 | if (iTls != TLS_OUT_OF_INDEXES)
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| 56 | {
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| 57 | Assert((RTTLS)iTls != NIL_RTTLS);
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| 58 | *piTls = (RTTLS)iTls;
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| 59 | Assert((DWORD)*piTls == iTls);
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| 60 | return VINF_SUCCESS;
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| 61 | }
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| 62 |
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| 63 | return VERR_NO_MEMORY;
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| 64 | }
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| 65 |
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| 66 |
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| 67 | RTR3DECL(int) RTTlsFree(RTTLS iTls)
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| 68 | {
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| 69 | if (iTls == NIL_RTTLS)
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| 70 | return VINF_SUCCESS;
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| 71 | if (TlsFree(iTls))
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| 72 | return VINF_SUCCESS;
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| 73 | return RTErrConvertFromWin32(GetLastError());
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| 74 |
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| 75 | }
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| 76 |
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| 77 |
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| 78 | RTR3DECL(void *) RTTlsGet(RTTLS iTls)
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| 79 | {
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| 80 | return TlsGetValue(iTls);
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| 81 | }
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| 82 |
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| 83 |
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| 84 | RTR3DECL(int) RTTlsGetEx(RTTLS iTls, void **ppvValue)
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| 85 | {
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| 86 | void *pv = TlsGetValue(iTls);
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| 87 | if (pv)
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| 88 | {
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| 89 | *ppvValue = pv;
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| 90 | return VINF_SUCCESS;
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| 91 | }
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| 92 |
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| 93 | /* TlsGetValue always updates last error */
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| 94 | *ppvValue = NULL;
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| 95 | return RTErrConvertFromWin32(GetLastError());
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| 96 | }
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| 97 |
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| 98 |
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| 99 | RTR3DECL(int) RTTlsSet(RTTLS iTls, void *pvValue)
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| 100 | {
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| 101 | if (TlsSetValue(iTls, pvValue))
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| 102 | return VINF_SUCCESS;
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| 103 | return RTErrConvertFromWin32(GetLastError());
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| 104 | }
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| 105 |
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