cancellation support for a large amount of the required syscalls

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 27 insertions, 7 deletions

diff --git a/libc/sysdeps/linux/common/wait.c b/libc/sysdeps/linux/common/wait.c
index b16495314..d4b79bd37 100644
--- a/libc/sysdeps/linux/common/wait.c
+++ b/libc/sysdeps/linux/common/wait.c
@@ -1,23 +1,43 @@
 /*
+ * Copyright (C) 2006 Steven J. Hill <sjhill@realitydiluted.com>
  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-
 #include <stdlib.h>
 #include <syscall.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <sys/resource.h>
 
-#ifdef __LINUXTHREADS_OLD__
-extern __typeof(wait) weak_function wait;
-strong_alias(wait,__libc_wait)
-#endif
+/* Wait for a child to die.  When one does, put its status in *STAT_LOC
+ * and return its process ID.  For errors, return (pid_t) -1.  */
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+#include <errno.h>
+#include <sysdep-cancel.h>
+
+pid_t attribute_hidden
+__libc_wait (__WAIT_STATUS_DEFN stat_loc)
+{
+  if (SINGLE_THREAD_P)
+    return INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0,
+			   (struct rusage *) NULL);
 
+  int oldtype = LIBC_CANCEL_ASYNC ();
+
+  pid_t result = INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0,
+				 (struct rusage *) NULL);
+
+  LIBC_CANCEL_RESET (oldtype);
+
+  return result;
+}
+#else
 /* Wait for a child to die.  When one does, put its status in *STAT_LOC
  * and return its process ID.  For errors, return (pid_t) -1.  */
-__pid_t wait(__WAIT_STATUS_DEFN stat_loc)
+__pid_t __libc_wait (__WAIT_STATUS_DEFN stat_loc)
 {
-	return wait4(WAIT_ANY, stat_loc, 0, NULL);
+      return wait4 (WAIT_ANY, stat_loc, 0, (struct rusage *) NULL);
 }
+#endif
+weak_alias(__libc_wait,wait)