Revert the latest set of platform changes.

test/cctest/test-lock.cc

-// Copyright 2006-2013 the V8 project authors. All rights reserved.
+// Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Tests of the Semaphore class from platform.h
+// Tests of the TokenLock class from lock.h
+
+#include <stdlib.h>
 
 #include "v8.h"
 
 #include "platform.h"
 #include "cctest.h"
 
 
 using namespace ::v8::internal;
 
 
+// Simple test of locking logic
+TEST(Simple) {
+  Mutex* mutex = OS::CreateMutex();
+  CHECK_EQ(0, mutex->Lock());  // acquire the lock with the right token
+  CHECK_EQ(0, mutex->Unlock());  // can unlock with the right token
+  delete mutex;
+}
+
+
+TEST(MultiLock) {
+  Mutex* mutex = OS::CreateMutex();
+  CHECK_EQ(0, mutex->Lock());
+  CHECK_EQ(0, mutex->Unlock());
+  delete mutex;
+}
+
+
+TEST(ShallowLock) {
+  Mutex* mutex = OS::CreateMutex();
+  CHECK_EQ(0, mutex->Lock());
+  CHECK_EQ(0, mutex->Unlock());
+  CHECK_EQ(0, mutex->Lock());
+  CHECK_EQ(0, mutex->Unlock());
+  delete mutex;
+}
+
+
 TEST(SemaphoreTimeout) {
   bool ok;
   Semaphore* sem = OS::CreateSemaphore(0);
 
   // Semaphore not signalled - timeout.
   ok = sem->Wait(0);
   CHECK(!ok);
   ok = sem->Wait(100);
   CHECK(!ok);
   ok = sem->Wait(1000);
   CHECK(!ok);
 
   // Semaphore signalled - no timeout.
   sem->Signal();
   ok = sem->Wait(0);
   sem->Signal();
   ok = sem->Wait(100);
   sem->Signal();
   ok = sem->Wait(1000);
   CHECK(ok);
   delete sem;
 }