Initial GetSample implementation.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 7c484de53ee1e537a8abeefdce1e0cab69e4952e..6449057a92f3da23ced995f78c3af01c915218ac 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -9,6 +9,7 @@
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
 #include <cmath>  // For isnan.
+#include "include/v8.h"
 #include "include/v8-debug.h"
 #include "include/v8-profiler.h"
 #include "include/v8-testing.h"
@@ -30,6 +31,7 @@
 #include "src/heap-snapshot-generator-inl.h"
 #include "src/icu_util.h"
 #include "src/json-parser.h"
+#include "src/log.h"
 #include "src/messages.h"
 #include "src/natives.h"
 #include "src/parser.h"
@@ -6706,6 +6708,26 @@ void Isolate::GetHeapStatistics(HeapStatistics* heap_statistics) {
 }
 
 
+void Isolate::GetSample(Sample* sample) {
+  sample->frames_count = 0;
+
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+
+  i::Logger* logger = isolate->logger();
+  if (logger == NULL) return;
+
+  i::Sampler* sampler = logger->sampler();
+  if (sampler == NULL) return;
+
+  // TODO(gohlap): These checks and getters above are just transitory.
+  //               Get rid of those as we make the API mature.
+  //               We have these right now because we want the new API
+  //               to play well with the current cpu-profiler thread inside v8.
+
+  sampler->GetSample(sample);
+}
+
+
 void Isolate::SetEventLogger(LogEventCallback that) {
   // Do not overwrite the event logger if we want to log explicitly.
   if (i::FLAG_log_timer_events) return;