[lttng-ust.git] / include / lttng / ust-tid.h

#ifndef _LTTNG_UST_TID_H
#define _LTTNG_UST_TID_H

/*
 * lttng/ust-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.
 */

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

#if defined(_syscall0)
_syscall0(pid_t, gettid)
#elif defined(__NR_gettid)
#include <unistd.h>
static inline pid_t 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 gettid(void)
{
	return getpid();
}
#endif

#endif /* _LTTNG_UST_TID_H */
Commit	Line	Data
49c0da7d MD	1	#ifndef _LTTNG_UST_TID_H
	2	#define _LTTNG_UST_TID_H
	3
	4	/*
	5	* lttng/ust-tid.h
	6	*
	7	* Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* gettid compatibility layer.
	10	*
d2428e87 MD	11	* Permission is hereby granted, free of charge, to any person obtaining a copy
	12	* of this software and associated documentation files (the "Software"), to deal
	13	* in the Software without restriction, including without limitation the rights
	14	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	15	* copies of the Software, and to permit persons to whom the Software is
	16	* furnished to do so, subject to the following conditions:
49c0da7d	17	*
d2428e87 MD	18	* The above copyright notice and this permission notice shall be included in
	19	* all copies or substantial portions of the Software.
	20	*
	21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	23	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	24	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	25	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	26	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	27	* SOFTWARE.
49c0da7d MD	28	*/
	29
	30	#ifdef __linux__
	31	#include <syscall.h>
	32	#endif
	33
	34	#if defined(_syscall0)
	35	_syscall0(pid_t, gettid)
	36	#elif defined(__NR_gettid)
	37	#include <unistd.h>
	38	static inline pid_t gettid(void)
	39	{
	40	return syscall(__NR_gettid);
	41	}
	42	#else
	43	#include <sys/types.h>
	44	#include <unistd.h>
	45
d02d8cf8	46	/* Fall-back on getpid for tid if not available. */
49c0da7d MD	47	static inline pid_t gettid(void)
	48	{
	49	return getpid();
	50	}
	51	#endif
	52
	53	#endif /* _LTTNG_UST_TID_H */