Contents

#define _GNU_SOURCE
#include <unistd.h>
#include <sys/types.h>
#define L1_CACHE_LINE_MAX 128 /* largest I've seen (Pentium 4) */
size_t rb_sp_l1_cache_line_size;

void sleepy_penguin_init_epoll(void);

#ifdef HAVE_SYS_TIMERFD_H
void sleepy_penguin_init_timerfd(void);
#else
#  define sleepy_penguin_init_timerfd() for(;0;)
#endif

#ifdef HAVE_SYS_EVENTFD_H
void sleepy_penguin_init_eventfd(void);
#else
#  define sleepy_penguin_init_eventfd() for(;0;)
#endif

#ifdef HAVE_SYS_INOTIFY_H
void sleepy_penguin_init_inotify(void);
#else
#  define sleepy_penguin_init_inotify() for(;0;)
#endif

#ifdef HAVE_SYS_SIGNALFD_H
void sleepy_penguin_init_signalfd(void);
#else
#  define sleepy_penguin_init_signalfd() for(;0;)
#endif

static size_t l1_cache_line_size_detect(void)
{
#ifdef _SC_LEVEL1_DCACHE_LINESIZE
	long tmp = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);

	if (tmp > 0 && tmp <= L1_CACHE_LINE_MAX)
		return (size_t)tmp;
#endif /* _SC_LEVEL1_DCACHE_LINESIZE */
	return L1_CACHE_LINE_MAX;
}

void Init_sleepy_penguin_ext(void)
{
	rb_sp_l1_cache_line_size = l1_cache_line_size_detect();

	sleepy_penguin_init_epoll();
	sleepy_penguin_init_timerfd();
	sleepy_penguin_init_eventfd();
	sleepy_penguin_init_inotify();
	sleepy_penguin_init_signalfd();
}

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
sleepy_penguin-3.1.0.26.g7181	ext/sleepy_penguin/init.c