diff options
| author | Peter S. Mazinger <ps.m@gmx.net> | 2011-04-22 00:42:58 +0200 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2012-06-15 14:00:41 +0200 |
| commit | 145ad1d976abff15f32e129e25f47c04807d24ac (patch) | |
| tree | 46a8d5a463865e48f570833285ef28726c256b22 /libc/sysdeps/linux/common/poll.c | |
| parent | b72b0b14d0da0b506fbddf755cc8c7d0cd813287 (diff) | |
poll, ppoll: use cancel.h
use __SYSCALL_SIGSET_T_SIZE
use non-cancellable select in fallback
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/common/poll.c')
| -rw-r--r-- | libc/sysdeps/linux/common/poll.c | 36 |
1 files changed, 11 insertions, 25 deletions
diff --git a/libc/sysdeps/linux/common/poll.c b/libc/sysdeps/linux/common/poll.c index 92c90da66..891d2fba4 100644 --- a/libc/sysdeps/linux/common/poll.c +++ b/libc/sysdeps/linux/common/poll.c @@ -20,31 +20,14 @@ #include <sys/syscall.h> #include <sys/poll.h> #include <bits/kernel-features.h> - -#ifdef __UCLIBC_HAS_THREADS_NATIVE__ -#include <sysdep-cancel.h> -#else -#define SINGLE_THREAD_P 1 -#endif +#include <cancel.h> #if defined __ASSUME_POLL_SYSCALL && defined __NR_poll -#define __NR___syscall_poll __NR_poll -static _syscall3(int, __syscall_poll, struct pollfd *, fds, - unsigned long int, nfds, int, timeout); +#define __NR___poll_nocancel __NR_poll +static _syscall3(int, __NC(poll), struct pollfd *, fds, + unsigned long int, nfds, int, timeout) -int poll(struct pollfd *fds, nfds_t nfds, int timeout) -{ - if (SINGLE_THREAD_P) - return __syscall_poll(fds, nfds, timeout); - -#ifdef __UCLIBC_HAS_THREADS_NATIVE__ - int oldtype = LIBC_CANCEL_ASYNC (); - int result = __syscall_poll(fds, nfds, timeout); - LIBC_CANCEL_RESET (oldtype); - return result; -#endif -} #else /* !__NR_poll */ #include <alloca.h> @@ -54,6 +37,7 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) #include <sys/time.h> #include <sys/param.h> #include <unistd.h> +#include <sys/select.h> /* uClinux 2.0 doesn't have poll, emulate it using select */ @@ -63,7 +47,7 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) Returns the number of file descriptors with events, zero if timed out, or -1 for errors. */ -int poll(struct pollfd *fds, nfds_t nfds, int timeout) +int __NC(poll)(struct pollfd *fds, nfds_t nfds, int timeout) { static int max_fd_size; struct timeval tv; @@ -134,7 +118,7 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) while (1) { - ready = select (maxfd + 1, rset, wset, xset, + ready = __NC(select) (maxfd + 1, rset, wset, xset, timeout == -1 ? NULL : &tv); /* It might be that one or more of the file descriptors is invalid. @@ -177,7 +161,7 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) if (f->events & POLLPRI) FD_SET (f->fd, sngl_xset); - n = select (f->fd + 1, sngl_rset, sngl_wset, sngl_xset, + n = __NC(select) (f->fd + 1, sngl_rset, sngl_wset, sngl_xset, &sngl_tv); if (n != -1) { @@ -222,4 +206,6 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) } #endif -libc_hidden_def(poll) +CANCELLABLE_SYSCALL(int, poll, (struct pollfd *fds, nfds_t nfds, int timeout), + (fds, nfds, timeout)) +lt_libc_hidden(poll) |