epoll.c raw

   1  #include <sys/epoll.h>
   2  #include <signal.h>
   3  #include <errno.h>
   4  #include "syscall.h"
   5  
   6  int epoll_create(int size)
   7  {
   8  	return epoll_create1(0);
   9  }
  10  
  11  int epoll_create1(int flags)
  12  {
  13  	int r = __syscall(SYS_epoll_create1, flags);
  14  #ifdef SYS_epoll_create
  15  	if (r==-ENOSYS && !flags) r = __syscall(SYS_epoll_create, 1);
  16  #endif
  17  	return __syscall_ret(r);
  18  }
  19  
  20  int epoll_ctl(int fd, int op, int fd2, struct epoll_event *ev)
  21  {
  22  	return syscall(SYS_epoll_ctl, fd, op, fd2, ev);
  23  }
  24  
  25  int epoll_pwait(int fd, struct epoll_event *ev, int cnt, int to, const sigset_t *sigs)
  26  {
  27  	int r = __syscall_cp(SYS_epoll_pwait, fd, ev, cnt, to, sigs, _NSIG/8);
  28  #ifdef SYS_epoll_wait
  29  	if (r==-ENOSYS && !sigs) r = __syscall_cp(SYS_epoll_wait, fd, ev, cnt, to);
  30  #endif
  31  	return __syscall_ret(r);
  32  }
  33  
  34  int epoll_wait(int fd, struct epoll_event *ev, int cnt, int to)
  35  {
  36  	return epoll_pwait(fd, ev, cnt, to, 0);
  37  }
  38