mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 12:14:18 +00:00
24 lines
531 B
C
24 lines
531 B
C
|
#include <sys/eventfd.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include "syscall.h"
|
||
|
|
|
||
|
|
int eventfd(unsigned int count, int flags)
|
||
|
|
{
|
||
|
|
int r = __syscall(SYS_eventfd2, count, flags);
|
||
|
|
#ifdef SYS_eventfd
|
||
|
|
if (r==-ENOSYS && !flags) r = __syscall(SYS_eventfd, count);
|
||
|
|
#endif
|
||
|
|
return __syscall_ret(r);
|
||
|
|
}
|
||
|
|
|
||
|
|
int eventfd_read(int fd, eventfd_t *value)
|
||
|
|
{
|
||
|
|
return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int eventfd_write(int fd, eventfd_t value)
|
||
|
|
{
|
||
|
|
return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
|
||
|
|
}
|