-- assert fixes for thrift concurrency lib

Summary:
- cannot assume that assert.h is defined

Reviewed By: marc k

Test Plan: everything compiles

Notes:
- need to reflect these changes in libfacebook/fbthread


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665073 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/PosixThreadFactory.cpp b/lib/cpp/src/concurrency/PosixThreadFactory.cpp
index d5d0d06..a043418 100644
--- a/lib/cpp/src/concurrency/PosixThreadFactory.cpp
+++ b/lib/cpp/src/concurrency/PosixThreadFactory.cpp
@@ -68,25 +68,32 @@
     state_ = starting;
 
     pthread_attr_t thread_attr;
-    assert(pthread_attr_init(&thread_attr) == 0);
-    assert(pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE) == 0);
+    int ret = pthread_attr_init(&thread_attr);
+    assert(ret);
+
+    ret = pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
+    assert(ret);
 
     // Set thread stack size
-    assert(pthread_attr_setstacksize(&thread_attr, MB * stackSize_) == 0);
+    ret = pthread_attr_setstacksize(&thread_attr, MB * stackSize_);
+    assert(ret);
 
     // Set thread policy
-    assert(pthread_attr_setschedpolicy(&thread_attr, policy_) == 0);
+    ret = pthread_attr_setschedpolicy(&thread_attr, policy_);
+    assert(ret);
 
     struct sched_param sched_param;
     sched_param.sched_priority = priority_;
 
     // Set thread priority
-    assert(pthread_attr_setschedparam(&thread_attr, &sched_param) == 0);
+    ret = pthread_attr_setschedparam(&thread_attr, &sched_param);
+    assert(ret);
 
     // Create reference
     shared_ptr<PthreadThread>* selfRef = new shared_ptr<PthreadThread>();
     *selfRef = self_.lock();
-    assert(pthread_create(&pthread_, &thread_attr, threadMain, (void*)selfRef) == 0);
+    ret = pthread_create(&pthread_, &thread_attr, threadMain, (void*)selfRef);
+    assert(ret);
   }
 
   void join() {
@@ -101,7 +108,8 @@
   void runnable(shared_ptr<Runnable> value) { Thread::runnable(value); }
 
   void weakRef(shared_ptr<PthreadThread> self) {
-    assert(self.get() == this);
+    bool ret = (self.get() == this);
+    assert(ret);
     self_ = weak_ptr<PthreadThread>(self);
   }
 };