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/* $Id: tls-posix.cpp $ */
/** @file
* IPRT - Thread Local Storage (TLS), POSIX.
*/
/*
* Copyright (C) 2008-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_THREAD
#include <errno.h>
#include <pthread.h>
#include <iprt/thread.h>
#include <iprt/log.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
AssertCompile(sizeof(pthread_key_t) <= sizeof(RTTLS));
RTR3DECL(RTTLS) RTTlsAlloc(void)
{
pthread_key_t iTls = (pthread_key_t)NIL_RTTLS;
int rc = pthread_key_create(&iTls, NULL);
if (!rc)
{
Assert(iTls != (pthread_key_t)NIL_RTTLS);
return iTls;
}
return NIL_RTTLS;
}
RTR3DECL(int) RTTlsAllocEx(PRTTLS piTls, PFNRTTLSDTOR pfnDestructor)
{
pthread_key_t iTls = (pthread_key_t)NIL_RTTLS;
#if defined(__GNUC__) && defined(RT_ARCH_X86)
int rc = pthread_key_create(&iTls, (void (*)(void*))pfnDestructor);
#else
int rc = pthread_key_create(&iTls, pfnDestructor);
#endif
if (!rc)
{
*piTls = iTls;
Assert((pthread_key_t)*piTls == iTls);
Assert(*piTls != NIL_RTTLS);
return VINF_SUCCESS;
}
return RTErrConvertFromErrno(rc);
}
RTR3DECL(int) RTTlsFree(RTTLS iTls)
{
if (iTls == NIL_RTTLS)
return VINF_SUCCESS;
int rc = pthread_key_delete(iTls);
if (!rc)
return VINF_SUCCESS;
return RTErrConvertFromErrno(rc);
}
RTR3DECL(void *) RTTlsGet(RTTLS iTls)
{
return pthread_getspecific(iTls);
}
RTR3DECL(int) RTTlsGetEx(RTTLS iTls, void **ppvValue)
{
if (RT_UNLIKELY(iTls == NIL_RTTLS))
return VERR_INVALID_PARAMETER;
*ppvValue = pthread_getspecific(iTls);
return VINF_SUCCESS;
}
RTR3DECL(int) RTTlsSet(RTTLS iTls, void *pvValue)
{
int rc = pthread_setspecific(iTls, pvValue);
if (RT_UNLIKELY(rc != 0))
return RTErrConvertFromErrno(rc);
return VINF_SUCCESS;
}
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