adaint.c (__gnat_pthread_setaffinity_np, [...]): Add these wrappers which check the availability of the underlying OS...

2010-10-18  Jose Ruiz  <ruiz@adacore.com>

	* adaint.c (__gnat_pthread_setaffinity_np,
	__gnat_pthread_attr_setaffinity_np): Add these wrappers which check the
	availability of the underlying OS functionality before calling.
	* s-osinte-linux.ads (pthread_setaffinity_np,
	pthread_attr_setaffinity_np): Call a wrapper instead of the OS function
	to perform a check of its availability.
	* s-taprop-linux.adb (Create_Task): Remove the check to verify whether
	the affinity functionality is available in the OS. Now done in a wrapper
	* gcc-interface/Makefile.in: Remove vmshandler.asm, unused.
	* gcc-interface/Make-lang.in: Update dependencies.

From-SVN: r165628

1 files changed, 46 insertions, 0 deletions

diff --git a/gcc/ada/adaint.c b/gcc/ada/adaint.c
index 3f4654f..11f6da0 100644
--- a/gcc/ada/adaint.c
+++ b/gcc/ada/adaint.c
@@ -3671,4 +3671,50 @@ void *__gnat_lwp_self (void)
 {
    return (void *) syscall (__NR_gettid);
 }
+
+/* For the affinity functions, there are systems which do not provide
+   the required support, so we create a wrapper to check its availability
+   before calling. */
+
+extern int pthread_setaffinity_np (pthread_t th,
+				   size_t cpusetsize,
+				   const void *cpuset)
+ __attribute__((weak));
+
+extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr,
+					size_t cpusetsize,
+					const void *cpuset)
+ __attribute__((weak));
+
+int __gnat_pthread_setaffinity_np (pthread_t th,
+				   size_t cpusetsize,
+				   const void *cpuset);
+
+int __gnat_pthread_attr_setaffinity_np (pthread_attr_t *__attr,
+					size_t cpusetsize,
+					const void *cpuset);
+
+int
+__gnat_pthread_setaffinity_np (pthread_t th,
+			       size_t cpusetsize,
+			       const void *cpuset)
+{
+  /* Call the underlying OS operation if available */
+  if (pthread_setaffinity_np)
+    return pthread_setaffinity_np (th, cpusetsize, cpuset);
+  else
+    return 0;
+}
+
+int
+__gnat_pthread_attr_setaffinity_np (pthread_attr_t *__attr,
+				    size_t cpusetsize,
+				    const void *cpuset)
+{
+  /* Call the underlying OS operation if available */
+  if (pthread_attr_setaffinity_np)
+    return pthread_attr_setaffinity_np (__attr, cpusetsize, cpuset);
+  else
+    return 0;
+}
 #endif