util.h File Reference

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

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Macros
#define	_BSD_SOURCE   1
#define	_DEFAULT_SOURCE   1
#define	zfree(ptr)   ({ free(*ptr); *ptr = NULL; })
#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)
#define	O_CLOEXEC   02000000

Functions
void	usage (const char *err) __noreturn
void	die (const char *err,...) __noreturn __printf(1
void static void *	zalloc (size_t size)
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)
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)
int __pure	cacheline_size (void)
int	sysctl__max_stack (void)
int	fetch_kernel_version (unsigned int *puint, char *str, size_t str_sz)
const char *	perf_tip (const char *dirpath)
int	sched_getcpu (void)
int	setns (int fd, int nstype)
void	perf_set_singlethreaded (void)
void	perf_set_multithreaded (void)

Variables
unsigned int	page_size
bool	perf_singlethreaded

Macro Definition Documentation

_BSD_SOURCE

#define _BSD_SOURCE   1

Definition at line 5 of file util.h.

_DEFAULT_SOURCE

#define _DEFAULT_SOURCE   1

Definition at line 7 of file util.h.

KVER_FMT

#define KVER_FMT   "%d.%d.%d"

Definition at line 55 of file util.h.

KVER_PARAM

#define KVER_PARAM

(

x

)

KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)

Definition at line 56 of file util.h.

KVER_PATCHLEVEL

#define KVER_PATCHLEVEL

(

x

)

(((x) >> 8) & 0xff)

Definition at line 53 of file util.h.

KVER_SUBLEVEL

#define KVER_SUBLEVEL

(

x

)

((x) & 0xff)

Definition at line 54 of file util.h.

KVER_VERSION

#define KVER_VERSION

(

x

)

(((x) >> 16) & 0xff)

Definition at line 52 of file util.h.

O_CLOEXEC

#define O_CLOEXEC   02000000

Definition at line 79 of file util.h.

zfree

#define zfree

(

ptr

)

({ free(*ptr); *ptr = NULL; })

Definition at line 25 of file util.h.

Function Documentation

cacheline_size()

int __pure cacheline_size

(

void

)

Definition at line 52 of file util.c.

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copyfile()

int copyfile	(	const char *	from,
		const char *	to
	)

Definition at line 320 of file util.c.

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copyfile_mode()

int copyfile_mode	(	const char *	from,
		const char *	to,
		mode_t	mode
	)

Definition at line 315 of file util.c.

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copyfile_ns()

int copyfile_ns	(	const char *	from,
		const char *	to,
		struct nsinfo *	nsi
	)

Definition at line 310 of file util.c.

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die()

void die	(	const char *	err,
			...
	)

fetch_kernel_version()

int fetch_kernel_version	(	unsigned int *	puint,
		char *	str,
		size_t	str_sz
	)

Definition at line 447 of file util.c.

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hex2u64()

int hex2u64	(	const char *	ptr,
		u64 *	val
	)

Definition at line 379 of file util.c.

hex_width()

size_t hex_width

(

u64

v

)

Definition at line 365 of file util.c.

lsdir()

struct strlist* lsdir	(	const char *	name,
		bool(*)(const char *, struct dirent *)	filter
	)

Definition at line 166 of file util.c.

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lsdir_no_dot_filter()

bool lsdir_no_dot_filter	(	const char *	name,
		struct dirent *	d
	)

mkdir_p()

int mkdir_p	(	char *	path,
		mode_t	mode
	)

Definition at line 93 of file util.c.

perf_set_multithreaded()

void perf_set_multithreaded

(

void

)

Definition at line 35 of file util.c.

perf_set_singlethreaded()

void perf_set_singlethreaded

(

void

)

Definition at line 30 of file util.c.

perf_tip()

const char* perf_tip

(

const char *

dirpath

)

Definition at line 482 of file util.c.

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readn()

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

Definition at line 351 of file util.c.

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rm_rf()

int rm_rf

(

const char *

path

)

Definition at line 119 of file util.c.

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sched_getcpu()

int sched_getcpu

(

void

)

Definition at line 15 of file cloexec.c.

setns()

int setns	(	int	fd,
		int	nstype
	)

Definition at line 5 of file setns.c.

sysctl__max_stack()

int sysctl__max_stack

(

void

)

Definition at line 65 of file util.c.

usage()

void usage

(

const char *

err

)

Definition at line 23 of file usage.c.

writen()

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

Definition at line 359 of file util.c.

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zalloc()

void static void* zalloc ( size_t  size )

inlinestatic

Definition at line 20 of file util.h.

Variable Documentation

page_size

unsigned int page_size

Definition at line 40 of file util.c.

perf_singlethreaded

bool perf_singlethreaded

Definition at line 28 of file util.c.