[linux.git] / tools / perf / util / util.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef GIT_COMPAT_UTIL_H
#define GIT_COMPAT_UTIL_H

#define _BSD_SOURCE 1
/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
#define _DEFAULT_SOURCE 1

#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <linux/compiler.h>
#include <sys/types.h>

/* General helper functions */
void usage(const char *err) __noreturn;
void die(const char *err, ...) __noreturn __printf(1, 2);

static inline void *zalloc(size_t size)
{
	return calloc(1, size);
}

#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })

struct dirent;
struct nsinfo;
struct strlist;

int mkdir_p(char *path, mode_t mode);
int rm_rf(const char *path);
struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
bool lsdir_no_dot_filter(const char *name, struct dirent *d);
int copyfile(const char *from, const char *to);
int copyfile_mode(const char *from, const char *to, mode_t mode);
int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);

ssize_t readn(int fd, void *buf, size_t n);
ssize_t writen(int fd, const void *buf, size_t n);

size_t hex_width(u64 v);
int hex2u64(const char *ptr, u64 *val);

extern unsigned int page_size;
int __pure cacheline_size(void);

int sysctl__max_stack(void);

int fetch_kernel_version(unsigned int *puint,
			 char *str, size_t str_sz);
#define KVER_VERSION(x)		(((x) >> 16) & 0xff)
#define KVER_PATCHLEVEL(x)	(((x) >> 8) & 0xff)
#define KVER_SUBLEVEL(x)	((x) & 0xff)
#define KVER_FMT	"%d.%d.%d"
#define KVER_PARAM(x)	KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)

const char *perf_tip(const char *dirpath);

#ifndef HAVE_GET_CURRENT_DIR_NAME
char *get_current_dir_name(void);
#endif

#ifndef HAVE_SCHED_GETCPU_SUPPORT
int sched_getcpu(void);
#endif

#ifndef HAVE_SETNS_SUPPORT
int setns(int fd, int nstype);
#endif

extern bool perf_singlethreaded;

void perf_set_singlethreaded(void);
void perf_set_multithreaded(void);

#ifndef O_CLOEXEC
#ifdef __sparc__
#define O_CLOEXEC      0x400000
#elif defined(__alpha__) || defined(__hppa__)
#define O_CLOEXEC      010000000
#else
#define O_CLOEXEC      02000000
#endif
#endif

#endif /* GIT_COMPAT_UTIL_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
07800601 IM	2	#ifndef GIT_COMPAT_UTIL_H
	3	#define GIT_COMPAT_UTIL_H
	4
07800601	5	#define _BSD_SOURCE 1
512fe365 CP	6	/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
512fe365 CP	7	#define _DEFAULT_SOURCE 1
07800601	8
ed93d0a2	9	#include <fcntl.h>
e206d556	10	#include <stdbool.h>
07800601 IM	11	#include <stddef.h>
	12	#include <stdlib.h>
	13	#include <stdarg.h>
6c346643	14	#include <linux/compiler.h>
ad0902e0	15	#include <sys/types.h>
1fe2c106	16
07800601	17	/* General helper functions */
6c346643	18	void usage(const char *err) __noreturn;
afaed6d3	19	void die(const char *err, ...) __noreturn __printf(1, 2);
07800601	20
36479484 ACM	21	static inline void *zalloc(size_t size)
	22	{
	23	return calloc(1, size);
	24	}
	25
04662523 ACM	26	#define zfree(ptr) ({ free(ptr); ptr = NULL; })
04662523 ACM	27
76b31a29	28	struct dirent;
ad0902e0	29	struct nsinfo;
8ec20b17 ACM	30	struct strlist;
8ec20b17 ACM	31
4cf40131	32	int mkdir_p(char *path, mode_t mode);
9a9c733d	33	int rm_rf(const char *path);
e1ce726e MH	34	struct strlist lsdir(const char name, bool (filter)(const char , struct dirent *));
e1ce726e MH	35	bool lsdir_no_dot_filter(const char name, struct dirent d);
4cf40131	36	int copyfile(const char from, const char to);
9a17d726	37	int copyfile_mode(const char from, const char to, mode_t mode);
f045b8c4	38	int copyfile_ns(const char from, const char to, struct nsinfo *nsi);
ed93d0a2	39	int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);
4cf40131	40
727ebd54	41	ssize_t readn(int fd, void *buf, size_t n);
7c724405	42	ssize_t writen(int fd, const void *buf, size_t n);
e206d556	43
61e04b33	44	size_t hex_width(u64 v);
b2aff5f6	45	int hex2u64(const char ptr, u64 val);
61e04b33	46
0c1fe6b2	47	extern unsigned int page_size;
9ac94e31	48	int __pure cacheline_size(void);
0c1fe6b2	49
029c75e5 ACM	50	int sysctl__max_stack(void);
029c75e5 ACM	51
07bc5c69 WN	52	int fetch_kernel_version(unsigned int *puint,
07bc5c69 WN	53	char *str, size_t str_sz);
d3e0ce39 WN	54	#define KVER_VERSION(x) (((x) >> 16) & 0xff)
	55	#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
	56	#define KVER_SUBLEVEL(x) ((x) & 0xff)
	57	#define KVER_FMT "%d.%d.%d"
	58	#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
07bc5c69	59
14cbfbeb NK	60	const char perf_tip(const char dirpath);
14cbfbeb NK	61
8feb8efe ACM	62	#ifndef HAVE_GET_CURRENT_DIR_NAME
	63	char *get_current_dir_name(void);
	64	#endif
	65
120010cb ACM	66	#ifndef HAVE_SCHED_GETCPU_SUPPORT
120010cb ACM	67	int sched_getcpu(void);
c7007e98 ACM	68	#endif
c7007e98 ACM	69
86bcdb5a ACM	70	#ifndef HAVE_SETNS_SUPPORT
	71	int setns(int fd, int nstype);
	72	#endif
	73
0a7c74ea ACM	74	extern bool perf_singlethreaded;
	75
	76	void perf_set_singlethreaded(void);
	77	void perf_set_multithreaded(void);
	78
5c61d70e ACM	79	#ifndef O_CLOEXEC
	80	#ifdef __sparc__
	81	#define O_CLOEXEC 0x400000
	82	#elif defined(__alpha__) \|\| defined(__hppa__)
	83	#define O_CLOEXEC 010000000
	84	#else
	85	#define O_CLOEXEC 02000000
	86	#endif
	87	#endif
	88
1355915a	89	#endif /* GIT_COMPAT_UTIL_H */