[deliverable/lttng-tools.git] / src / common / compat / tid.h

/*
 * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * gettid compatibility layer.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef LTTNG_TID_H
#define LTTNG_TID_H

#ifdef __linux__
#include <syscall.h>
#endif

#if defined(__NR_gettid)

#include <unistd.h>
static inline pid_t lttng_gettid(void)
{
	return syscall(__NR_gettid);
}

#else

#include <sys/types.h>
#include <unistd.h>

/* Fall-back on getpid for tid if not available. */
static inline pid_t lttng_gettid(void)
{
	return getpid();
}

#endif

#endif /* LTTNG_TID_H */
Commit	Line	Data
ffe60014 DG	1	/*
	2	* Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	3	*
	4	* gettid compatibility layer.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to
	8	* deal in the Software without restriction, including without limitation the
	9	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	10	* sell copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	19	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	21	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	22	* IN THE SOFTWARE.
	23	*/
	24
	25	#ifndef LTTNG_TID_H
	26	#define LTTNG_TID_H
	27
	28	#ifdef __linux__
	29	#include <syscall.h>
	30	#endif
	31
557ac9b9 MJ	32	#if defined(__NR_gettid)
557ac9b9 MJ	33
ffe60014	34	#include <unistd.h>
557ac9b9	35	static inline pid_t lttng_gettid(void)
ffe60014 DG	36	{
	37	return syscall(__NR_gettid);
	38	}
557ac9b9	39
ffe60014	40	#else
557ac9b9	41
ffe60014 DG	42	#include <sys/types.h>
	43	#include <unistd.h>
	44
	45	/* Fall-back on getpid for tid if not available. */
557ac9b9	46	static inline pid_t lttng_gettid(void)
ffe60014 DG	47	{
	48	return getpid();
	49	}
557ac9b9	50
ffe60014 DG	51	#endif
	52
	53	#endif /* LTTNG_TID_H */