mirror of https://gerrit.osmocom.org/libosmocore
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/*
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* (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Pau Espin Pedrol <pespin@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/*! \addtogroup thread
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* @{
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* \file thread.c
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*/
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/*! \file thread.c
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*/
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#include "config.h"
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/* If HAVE_GETTID, then "_GNU_SOURCE" may need to be defined to use gettid() */
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#if HAVE_GETTID
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#define _GNU_SOURCE
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#endif
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#include <unistd.h>
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#include <sys/types.h>
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#include <osmocom/core/thread.h>
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/*! Wrapper around Linux's gettid() to make it easily accessible on different system versions.
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* If the gettid() API cannot be found, it will use the syscall directly if
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* available. If no syscall is found available, then getpid() is called as
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* fallback. See 'man 2 gettid' for further and details information.
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* \returns This call is always successful and returns returns the thread ID of
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* the calling thread (or the process ID of the current process if
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* gettid() or its syscall are unavailable in the system).
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*/
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pid_t osmo_gettid(void)
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{
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#if HAVE_GETTID
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return gettid();
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#elif defined(LINUX) && defined(__NR_gettid)
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return (pid_t) syscall(__NR_gettid);
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#else
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#pragma message ("use pid as tid")
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return getpid();
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#endif
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}
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