Change the thread interface in runtime/platform and use it starting all threads

runtime/platform/thread_linux.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/thread.h"
 
 #include <errno.h>
 #include <sys/time.h>
 
 #include "platform/assert.h"
 
 namespace dart {
 
 #define VALIDATE_PTHREAD_RESULT(result) \
   if (result != 0) { \
     FATAL2("pthread error: %d (%s)", result, strerror(result)); \
   }
 
 
+#ifdef DEBUG
+#define RETURN_ON_PTHREAD_FAILURE(result) \
+  if (result != 0) { \
+    fprintf(stderr, "%s:%d: pthread error: %d (%s)\n", \
+            __FILE__, __LINE__, result, strerror(result)); \
+    return result; \
+  }
+#else
+#define RETURN_ON_PTHREAD_FAILURE(result) \
+  if (result != 0) return result;
+#endif
+
+
 static void ComputeTimeSpec(struct timespec* ts, int64_t millis) {
   int64_t secs = millis / kMillisecondsPerSecond;
   int64_t nanos =
       (millis - (secs * kMillisecondsPerSecond)) * kNanosecondsPerMillisecond;
   int result = clock_gettime(CLOCK_MONOTONIC, ts);
   ASSERT(result == 0);
   ts->tv_sec += secs;
   ts->tv_nsec += nanos;
   if (ts->tv_nsec >= kNanosecondsPerSecond) {
     ts->tv_sec += 1;
     ts->tv_nsec -= kNanosecondsPerSecond;
   }
 }
 
 
 class ThreadStartData {
  public:
   ThreadStartData(Thread::ThreadStartFunction function,
-                  uword parameter,
-                  Thread* thread)
-      : function_(function), parameter_(parameter), thread_(thread) {}
+                  uword parameter)
+      : function_(function), parameter_(parameter) {}
 
   Thread::ThreadStartFunction function() const { return function_; }
   uword parameter() const { return parameter_; }
-  Thread* thread() const { return thread_; }
 
  private:
   Thread::ThreadStartFunction function_;
   uword parameter_;
-  Thread* thread_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadStartData);
 };
 
 
 // Dispatch to the thread start function provided by the caller. This trampoline
 // is used to ensure that the thread is properly destroyed if the thread just
 // exits.
 static void* ThreadStart(void* data_ptr) {
   ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
 
   Thread::ThreadStartFunction function = data->function();
   uword parameter = data->parameter();
-  Thread* thread = data->thread();
   delete data;
 
   // Call the supplied thread start function handing it its parameters.
   function(parameter);
 
-  // When the function returns here, make sure that the thread is deleted.
-  delete thread;
-
   return NULL;
 }
 
 
-Thread::Thread(ThreadStartFunction function, uword parameter) {
+int Thread::Start(ThreadStartFunction function, uword parameter) {
   pthread_attr_t attr;
   int result = pthread_attr_init(&attr);
-  VALIDATE_PTHREAD_RESULT(result);
+  RETURN_ON_PTHREAD_FAILURE(result);
 
   result = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
-  VALIDATE_PTHREAD_RESULT(result);
+  RETURN_ON_PTHREAD_FAILURE(result);
 
   result = pthread_attr_setstacksize(&attr, 1024 * KB);
-  VALIDATE_PTHREAD_RESULT(result);
+  RETURN_ON_PTHREAD_FAILURE(result);
 
-  ThreadStartData* data = new ThreadStartData(function, parameter, this);
+  ThreadStartData* data = new ThreadStartData(function, parameter);
 
   pthread_t tid;
-  result = pthread_create(&tid,
-                          &attr,
-                          ThreadStart,
-                          data);
-  VALIDATE_PTHREAD_RESULT(result);
-
-  data_.tid_ = tid;
+  result = pthread_create(&tid, &attr, ThreadStart, data);
+  RETURN_ON_PTHREAD_FAILURE(result);
 
   result = pthread_attr_destroy(&attr);
-  VALIDATE_PTHREAD_RESULT(result);
+  RETURN_ON_PTHREAD_FAILURE(result);
+
+  return 0;
 }
 
 
-Thread::~Thread() {
-}
-
-
 Mutex::Mutex() {
   pthread_mutexattr_t attr;
   int result = pthread_mutexattr_init(&attr);
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
   VALIDATE_PTHREAD_RESULT(result);
 #endif  // defined(DEBUG)
 
@@ skipping 124 matching lines @@
 }
 
 
 void Monitor::NotifyAll() {
   // TODO(iposva): Do we need to track lock owners?
   int result = pthread_cond_broadcast(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 }  // namespace dart