[mirror_ubuntu-focal-kernel.git] / tools / perf / util / usage.c

// SPDX-License-Identifier: GPL-2.0
/*
 * usage.c
 *
 * Various reporting routines.
 * Originally copied from GIT source.
 *
 * Copyright (C) Linus Torvalds, 2005
 */
#include "util.h"
#include "debug.h"
#include <stdio.h>
#include <stdlib.h>
#include <linux/compiler.h>

static __noreturn void usage_builtin(const char *err)
{
	fprintf(stderr, "\n Usage: %s\n", err);
	exit(129);
}

/* If we are in a dlopen()ed .so write to a global variable would segfault
 * (ugh), so keep things static. */
static void (*usage_routine)(const char *err) __noreturn = usage_builtin;

void usage(const char *err)
{
	usage_routine(err);
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
07800601	2	/*
5f9273d6 NK	3	* usage.c
	4	*
	5	* Various reporting routines.
	6	* Originally copied from GIT source.
07800601 IM	7	*
	8	* Copyright (C) Linus Torvalds, 2005
	9	*/
	10	#include "util.h"
0d37aa34	11	#include "debug.h"
215a0d30 ACM	12	#include <stdio.h>
	13	#include <stdlib.h>
	14	#include <linux/compiler.h>
07800601	15
6c346643	16	static __noreturn void usage_builtin(const char *err)
07800601	17	{
716c69fe	18	fprintf(stderr, "\n Usage: %s\n", err);
07800601 IM	19	exit(129);
	20	}
	21
07800601 IM	22	/* If we are in a dlopen()ed .so write to a global variable would segfault
07800601 IM	23	* (ugh), so keep things static. */
6c346643	24	static void (usage_routine)(const char err) __noreturn = usage_builtin;
2690c730	25
07800601 IM	26	void usage(const char *err)
	27	{
	28	usage_routine(err);
	29	}