Profiler Take 2

runtime/platform/thread_macos.cc

Index: runtime/platform/thread_macos.cc
diff --git a/runtime/platform/thread_macos.cc b/runtime/platform/thread_macos.cc
index c4167d43c4cacb843ef653195cb4e4fe25db18e5..01c5c8c9e2d0dbc597f834e95978ee73389bd211 100644
--- a/runtime/platform/thread_macos.cc
+++ b/runtime/platform/thread_macos.cc
@@ -106,7 +106,7 @@ int Thread::Start(ThreadStartFunction function, uword parameter) {
 
 
 ThreadLocalKey Thread::kUnsetThreadLocalKey = static_cast<pthread_key_t>(-1);
-
+ThreadId Thread::kInvalidThreadId = reinterpret_cast<ThreadId>(NULL);
 
 ThreadLocalKey Thread::CreateThreadLocal() {
   pthread_key_t key = kUnsetThreadLocalKey;
@@ -142,6 +142,17 @@ ThreadId Thread::GetCurrentThreadId() {
 }
 
 
+intptr_t Thread::ThreadIdToIntPtr(ThreadId id) {
+  ASSERT(sizeof(id) == sizeof(intptr_t));
+  return reinterpret_cast<intptr_t>(id);
+}
+
+
+bool Thread::Compare(ThreadId a, ThreadId b) {
+  return pthread_equal(a, b) != 0;
+}
+
+
 void Thread::GetThreadCpuUsage(ThreadId thread_id, int64_t* cpu_usage) {
   ASSERT(thread_id == GetCurrentThreadId());
   ASSERT(cpu_usage != NULL);