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

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * gettid compatibility layer.
 */

#ifndef _UST_COMMON_COMPAT_GETTID_H
#define _UST_COMMON_COMPAT_GETTID_H

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

#ifdef HAVE_GETTID

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

#elif 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 /* _UST_COMMON_COMPAT_GETTID_H */
Commit	Line	Data
	1	/*
	2	* SPDX-License-Identifier: MIT
	3	*
	4	* Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	5	*
	6	* gettid compatibility layer.
	7	*/
	8
	9	#ifndef _UST_COMMON_COMPAT_GETTID_H
	10	#define _UST_COMMON_COMPAT_GETTID_H
	11
	12	#ifdef __linux__
	13	#include <sys/syscall.h>
	14	#endif
	15
	16	#ifdef HAVE_GETTID
	17
	18	#include <unistd.h>
	19	static inline pid_t lttng_gettid(void)
	20	{
	21	return gettid();
	22	}
	23
	24	#elif defined(__NR_gettid)
	25
	26	#include <unistd.h>
	27	static inline pid_t lttng_gettid(void)
	28	{
	29	return syscall(__NR_gettid);
	30	}
	31
	32	#else
	33
	34	#include <sys/types.h>
	35	#include <unistd.h>
	36
	37	/* Fall-back on getpid for tid if not available. */
	38	static inline pid_t lttng_gettid(void)
	39	{
	40	return getpid();
	41	}
	42
	43	#endif
	44
	45	#endif /* _UST_COMMON_COMPAT_GETTID_H */