| 1 | /* $Id: tls-posix.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Thread Local Storage (TLS), POSIX.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2008-2019 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 <errno.h>
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| 33 | #include <pthread.h>
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| 34 |
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| 35 | #include <iprt/thread.h>
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| 36 | #include <iprt/log.h>
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/errcore.h>
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| 39 |
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| 40 |
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| 41 | AssertCompile(sizeof(pthread_key_t) <= sizeof(RTTLS));
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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 | pthread_key_t iTls = (pthread_key_t)NIL_RTTLS;
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| 47 | int rc = pthread_key_create(&iTls, NULL);
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| 48 | if (!rc)
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| 49 | {
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| 50 | Assert(iTls != (pthread_key_t)NIL_RTTLS);
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| 51 | return iTls;
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| 52 | }
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| 53 | return NIL_RTTLS;
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| 54 | }
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| 55 |
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| 56 |
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| 57 | RTR3DECL(int) RTTlsAllocEx(PRTTLS piTls, PFNRTTLSDTOR pfnDestructor)
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| 58 | {
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| 59 | pthread_key_t iTls = (pthread_key_t)NIL_RTTLS;
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| 60 | #if defined(__GNUC__) && defined(RT_ARCH_X86)
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| 61 | int rc = pthread_key_create(&iTls, (void (*)(void*))pfnDestructor);
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| 62 | #else
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| 63 | int rc = pthread_key_create(&iTls, pfnDestructor);
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| 64 | #endif
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| 65 | if (!rc)
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| 66 | {
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| 67 | *piTls = iTls;
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| 68 | Assert((pthread_key_t)*piTls == iTls);
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| 69 | Assert(*piTls != NIL_RTTLS);
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| 70 | return VINF_SUCCESS;
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| 71 | }
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| 72 | return RTErrConvertFromErrno(rc);
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| 73 | }
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| 74 |
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| 75 |
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| 76 | RTR3DECL(int) RTTlsFree(RTTLS iTls)
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| 77 | {
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| 78 | if (iTls == NIL_RTTLS)
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| 79 | return VINF_SUCCESS;
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| 80 | int rc = pthread_key_delete(iTls);
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| 81 | if (!rc)
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| 82 | return VINF_SUCCESS;
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| 83 | return RTErrConvertFromErrno(rc);
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| 84 | }
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| 85 |
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| 86 |
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| 87 | RTR3DECL(void *) RTTlsGet(RTTLS iTls)
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| 88 | {
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| 89 | return pthread_getspecific(iTls);
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| 90 | }
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| 91 |
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| 92 |
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| 93 | RTR3DECL(int) RTTlsGetEx(RTTLS iTls, void **ppvValue)
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| 94 | {
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| 95 | if (RT_UNLIKELY(iTls == NIL_RTTLS))
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| 96 | return VERR_INVALID_PARAMETER;
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| 97 | *ppvValue = pthread_getspecific(iTls);
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| 98 | return VINF_SUCCESS;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | RTR3DECL(int) RTTlsSet(RTTLS iTls, void *pvValue)
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| 103 | {
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| 104 | int rc = pthread_setspecific(iTls, pvValue);
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| 105 | if (RT_UNLIKELY(rc != 0))
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| 106 | return RTErrConvertFromErrno(rc);
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| 107 | return VINF_SUCCESS;
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| 108 | }
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| 109 |
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