futex-wake.c File Reference

#include <string.h>
#include <pthread.h>
#include <signal.h>
#include "../util/stat.h"
#include <subcmd/parse-options.h>
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/time64.h>
#include <errno.h>
#include "bench.h"
#include "futex.h"
#include "cpumap.h"
#include <err.h>
#include <stdlib.h>
#include <sys/time.h>

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Functions
static void *	workerfn (void *arg __maybe_unused)
static void	print_summary (void)
static void	block_threads (pthread_t *w, pthread_attr_t thread_attr, struct cpu_map *cpu)
static void	toggle_done (int sig __maybe_unused, siginfo_t *info __maybe_unused, void *uc __maybe_unused)
int	bench_futex_wake (int argc, const char **argv)

Variables
static u_int32_t	futex1 = 0
static unsigned int	nwakes = 1
pthread_t *	worker
static bool	done = false
static bool	silent = false
static bool	fshared = false
static pthread_mutex_t	thread_lock
static pthread_cond_t	thread_parent
static pthread_cond_t	thread_worker
static struct stats waketime_stats	wakeup_stats
static unsigned int	ncpus
static unsigned int	threads_starting
static unsigned int	nthreads = 0
static int	futex_flag = 0
static const struct option	options []
static const char *const	bench_futex_wake_usage []

Function Documentation

bench_futex_wake()

int bench_futex_wake	(	int	argc,
		const char **	argv
	)

Definition at line 120 of file futex-wake.c.

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block_threads()

static void block_threads ( pthread_t *  w, pthread_attr_t  thread_attr, struct cpu_map *  cpu  )

static

Definition at line 92 of file futex-wake.c.

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print_summary()

static void print_summary ( void  )

static

Definition at line 79 of file futex-wake.c.

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toggle_done()

static void toggle_done ( int sig  __maybe_unused, siginfo_t *info  __maybe_unused, void *uc  __maybe_unused  )

static

Definition at line 113 of file futex-wake.c.

workerfn()

static void* workerfn ( void *arg  __maybe_unused )

static

Definition at line 61 of file futex-wake.c.

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Variable Documentation

bench_futex_wake_usage

const char* const bench_futex_wake_usage[]

static

Initial value:

= {
    "perf bench futex wake <options>",
    NULL
}

Definition at line 56 of file futex-wake.c.

done

bool done = false

static

Definition at line 41 of file futex-wake.c.

fshared

bool fshared = false

static

Definition at line 41 of file futex-wake.c.

futex1

u_int32_t futex1 = 0

static

Definition at line 32 of file futex-wake.c.

futex_flag

int futex_flag = 0

static

Definition at line 46 of file futex-wake.c.

ncpus

unsigned int ncpus

static

Definition at line 45 of file futex-wake.c.

nthreads

unsigned int nthreads = 0

static

Definition at line 45 of file futex-wake.c.

nwakes

unsigned int nwakes = 1

static

Definition at line 38 of file futex-wake.c.

options

const struct option options[]

static

Initial value:

= {
    OPT_UINTEGER('t', "threads", &nthreads, "Specify amount of threads"),
    OPT_UINTEGER('w', "nwakes",  &nwakes,   "Specify amount of threads to wake at once"),
    OPT_BOOLEAN( 's', "silent",  &silent,   "Silent mode: do not display data/details"),
    OPT_BOOLEAN( 'S', "shared",  &fshared,  "Use shared futexes instead of private ones"),

}

Definition at line 48 of file futex-wake.c.

silent

bool silent = false

static

Definition at line 41 of file futex-wake.c.

thread_lock

pthread_mutex_t thread_lock

static

Definition at line 42 of file futex-wake.c.

thread_parent

pthread_cond_t thread_parent

static

Definition at line 43 of file futex-wake.c.

thread_worker

pthread_cond_t thread_worker

static

Definition at line 43 of file futex-wake.c.

threads_starting

unsigned int threads_starting

static

Definition at line 45 of file futex-wake.c.

wakeup_stats

struct stats waketime_stats wakeup_stats

static

Definition at line 44 of file futex-wake.c.

worker

pthread_t* worker

Definition at line 40 of file futex-wake.c.