Added labelled thread names to help with some debugging activity. Right now,...

src/platform-macos.cc

Index: src/platform-macos.cc
===================================================================
--- src/platform-macos.cc	(revision 6114)
+++ src/platform-macos.cc	(working copy)
@@ -411,9 +411,19 @@
 
 
 Thread::Thread() : ThreadHandle(ThreadHandle::INVALID) {
+#ifdef DEBUG_THREAD_NAMES
+  SetName("v8:<unknown>");
+#endif
 }
 
 
+#ifdef DEBUG_THREAD_NAMES
+Thread::Thread(const char* name) : ThreadHandle(ThreadHandle::INVALID) {
+  SetName(name);
+}
+#endif
+
+
 Thread::~Thread() {
 }
 
@@ -430,6 +440,14 @@
 }
 
 
+#ifdef DEBUG_THREAD_NAMES
+void Thread::SetName(const char* name) {
+  strncpy(name_, name, sizeof(name_));
+  name_[sizeof(name_)-1] = '\0';
+}
+#endif
+
+
 void Thread::Start() {
   pthread_create(&thread_handle_data()->thread_, NULL, ThreadEntry, this);
 }