Avoid creating a redundant zero APInt.

[oota-llvm.git] / lib / System / Mutex.cpp

diff --git a/lib/System/Mutex.cpp b/lib/System/Mutex.cpp
index 33dff053315fafab5f622ab69e52d7a4442fe23d..81dcd3b418b8b6962704ff68f055bbf7ff7dfb5a 100644 (file)
--- a/lib/System/Mutex.cpp
+++ b/lib/System/Mutex.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Reid Spencer and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -52,7 +52,7 @@ using namespace sys;
 //       is configured into the LIBS variable.
 // Note: this line of code generates a warning if pthread_mutex_init is not
 //       declared with weak linkage. It's safe to ignore the warning.
-static const bool pthread_enabled = static_cast<bool>(pthread_mutex_init);
+static const bool pthread_enabled = true;
 
 // Construct a Mutex using pthread calls
 Mutex::Mutex( bool recursive)
@@ -75,7 +75,7 @@ Mutex::Mutex( bool recursive)
     errorcode = pthread_mutexattr_settype(&attr, kind);
     assert(errorcode == 0);
 
-#ifndef __FreeBSD__
+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
     // Make it a process local mutex
     errorcode = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
 #endif
@@ -98,9 +98,9 @@ Mutex::~Mutex()
 {
   if (pthread_enabled)
   {
-    pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(data_);
+    pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);
     assert(mutex != 0);
-    int errorcode = pthread_mutex_destroy(mutex);
+    pthread_mutex_destroy(mutex);
     assert(mutex != 0);
   }
 }
@@ -110,7 +110,7 @@ Mutex::acquire()
 {
   if (pthread_enabled)
   {
-    pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(data_);
+    pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);
     assert(mutex != 0);
 
     int errorcode = pthread_mutex_lock(mutex);
@@ -124,7 +124,7 @@ Mutex::release()
 {
   if (pthread_enabled)
   {
-    pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(data_);
+    pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);
     assert(mutex != 0);
 
     int errorcode = pthread_mutex_unlock(mutex);
@@ -138,7 +138,7 @@ Mutex::tryacquire()
 {
   if (pthread_enabled)
   {
-    pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(data_);
+    pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);
     assert(mutex != 0);
 
     int errorcode = pthread_mutex_trylock(mutex);
@@ -157,3 +157,4 @@ Mutex::tryacquire()
 #warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 was set in System/Mutex.cpp
 #endif
 #endif
+