Use v8::internal threading support in samples/shell.cc.

src/platform-macos.cc

Index: src/platform-macos.cc
diff --git a/src/platform-macos.cc b/src/platform-macos.cc
index df2cd672efe2f6ad28953ded029d27740d070d57..66c86c6f39d412e2f1a5124ddcd645ea689db212 100644
--- a/src/platform-macos.cc
+++ b/src/platform-macos.cc
@@ -432,16 +432,18 @@ bool ThreadHandle::IsValid() const {
 }
 
 
-Thread::Thread(Isolate* isolate)
+Thread::Thread(Isolate* isolate, const Options& options)
     : ThreadHandle(ThreadHandle::INVALID),
-      isolate_(isolate) {
-  set_name("v8:<unknown>");
+      isolate_(isolate),
+      stack_size_(options.stack_size) {
+  set_name(options.name);
 }
 
 
 Thread::Thread(Isolate* isolate, const char* name)
     : ThreadHandle(ThreadHandle::INVALID),
-      isolate_(isolate) {
+      isolate_(isolate),
+      stack_size_(0) {
   set_name(name);
 }
 
@@ -450,7 +452,6 @@ Thread::~Thread() {
 }
 
 
-
 static void SetThreadName(const char* name) {
   // pthread_setname_np is only available in 10.6 or later, so test
   // for it at runtime.
@@ -489,7 +490,15 @@ void Thread::set_name(const char* name) {
 
 
 void Thread::Start() {
-  pthread_create(&thread_handle_data()->thread_, NULL, ThreadEntry, this);
+  pthread_attr_t* attr_ptr = NULL;
+  pthread_attr_t attr;
+  if (stack_size_ > 0) {
+    pthread_attr_init(&attr);
+    pthread_attr_setstacksize(&attr, static_cast<size_t>(stack_size_));
+    attr_ptr = &attr;
+  }
+  pthread_create(&thread_handle_data()->thread_, attr_ptr, ThreadEntry, this);
+  ASSERT(IsValid());
 }
 
 
@@ -626,7 +635,9 @@ class Sampler::PlatformData : public Malloced {
 
 class SamplerThread : public Thread {
  public:
-  explicit SamplerThread(int interval) : Thread(NULL), interval_(interval) {}
+  explicit SamplerThread(int interval)
+      : Thread(NULL, "SamplerThread"),
+        interval_(interval) {}
 
   static void AddActiveSampler(Sampler* sampler) {
     ScopedLock lock(mutex_);