about summary refs log tree commit diff
path: root/nptl/sysdeps/unix/sysv/linux/select.c
diff options
context:
space:
mode:
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/select.c')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/select.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/select.c b/nptl/sysdeps/unix/sysv/linux/select.c
new file mode 100644
index 0000000000..b1c46595be
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/select.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <sysdep.h>
+#include <sys/select.h>
+#include <nptl/pthreadP.h>
+#include <tls.h>
+
+#ifdef __NR__newselect
+# undef __NR_select
+# define __NR_select __NR__newselect
+#endif
+
+
+int
+__libc_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
+	       struct timeval *timeout)
+{
+#ifndef NOT_IN_libc
+  if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
+				       header.data.multiple_threads) == 0, 1))
+    return INLINE_SYSCALL (select, 5, n, readfds, writefds, exceptfds,
+			   timeout);
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+#endif
+
+  int result = INLINE_SYSCALL (select, 5, n, readfds, writefds, exceptfds,
+			       timeout);
+
+#ifndef NOT_IN_libc
+  LIBC_CANCEL_RESET (oldtype);
+#endif
+
+  return result;
+}
+strong_alias (__libc_select, __select)
+libc_hidden_weak(__select)
+weak_alias (__libc_select, select)