Sampling profiler

runtime/platform/thread_android.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/globals.h"
 #if defined(TARGET_OS_ANDROID)
 
 #include "platform/thread.h"
 
 #include <errno.h>  // NOLINT
@@ skipping 126 matching lines @@
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 
 intptr_t Thread::GetMaxStackSize() {
   const int kStackSize = (128 * kWordSize * KB);
   return kStackSize;
 }
 
 
+ThreadId Thread::GetCurrentThreadId() {
+  return pthread_self();
+}
+
+
+void Thread::GetThreadCpuUsage(ThreadId thread_id, int64_t* cpu_usage) {
+  ASSERT(thread_id == GetCurrentThreadId());
+  ASSERT(cpu_usage != NULL);
+  struct timespec ts;
+  int r = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
+  ASSERT(r == 0);
+  *cpu_usage = (ts.tv_sec * kNanosecondsPerSecond + ts.tv_nsec) /
+               kNanosecondsPerMicrosecond;
+}
+
+
 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 105 matching lines @@
     struct timespec ts;
     ComputeTimeSpec(&ts, millis);
     int result = pthread_cond_timedwait_monotonic(
         data_.cond(), data_.mutex(), &ts);
     ASSERT((result == 0) || (result == ETIMEDOUT));
     if (result == ETIMEDOUT) {
       retval = kTimedOut;
     }
   }
   return retval;
 }

[siva, 2013/11/11 03:51:54]

We need a Monitor::WaitMicros implementation here ?

[Cutch, 2013/11/18 20:48:54]

Done.

 
 
 void Monitor::Notify() {
   // TODO(iposva): Do we need to track lock owners?
   int result = pthread_cond_signal(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 
 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
 
 #endif  // defined(TARGET_OS_ANDROID)