Initial GetSample implementation.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
 #include <cmath>  // For isnan.
 #include "include/v8-debug.h"
 #include "include/v8-profiler.h"
+#include "include/v8-sampler.h"
 #include "include/v8-testing.h"
 #include "src/assert-scope.h"
 #include "src/base/platform/platform.h"
 #include "src/base/platform/time.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/compiler.h"
 #include "src/conversions-inl.h"
 #include "src/counters.h"
 #include "src/cpu-profiler.h"
 #include "src/debug.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
 #include "src/global-handles.h"
 #include "src/heap-profiler.h"
 #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"
 #include "src/profile-generator-inl.h"
 #include "src/property.h"
 #include "src/property-details.h"
 #include "src/runtime.h"
 #include "src/runtime-profiler.h"
 #include "src/scanner-character-streams.h"
 #include "src/simulator.h"
 #include "src/snapshot.h"
 #include "src/unicode-inl.h"
 #include "src/v8threads.h"
 #include "src/version.h"
 #include "src/vm-state-inl.h"
 
 
 #define LOG_API(isolate, expr) LOG(isolate, ApiEntryCall(expr))
 
 #define ENTER_V8(isolate)                                          \
   ASSERT((isolate)->IsInitialized());                              \
-  i::VMState<i::OTHER> __state__((isolate))
+  i::VMState<OTHER> __state__((isolate))
 
 namespace v8 {
 
 #define ON_BAILOUT(isolate, location, code)                        \
   if (IsExecutionTerminatingCheck(isolate)) {                      \
     code;                                                          \
     UNREACHABLE();                                                 \
   }
 
 
@@ skipping 7104 matching lines @@
 }
 
 
 const CpuProfile* CpuProfiler::StopCpuProfiling(Handle<String> title) {
   return StopProfiling(title);
 }
 
 
 void CpuProfiler::SetIdle(bool is_idle) {
   i::Isolate* isolate = reinterpret_cast<i::CpuProfiler*>(this)->isolate();
-  i::StateTag state = isolate->current_vm_state();
-  ASSERT(state == i::EXTERNAL || state == i::IDLE);
+  StateTag state = isolate->current_vm_state();
+  ASSERT(state == EXTERNAL || state == IDLE);
   if (isolate->js_entry_sp() != NULL) return;
   if (is_idle) {
-    isolate->set_current_vm_state(i::IDLE);
-  } else if (state == i::IDLE) {
-    isolate->set_current_vm_state(i::EXTERNAL);
+    isolate->set_current_vm_state(IDLE);
+  } else if (state == IDLE) {
+    isolate->set_current_vm_state(EXTERNAL);
   }
 }
 
 
 static i::HeapGraphEdge* ToInternal(const HeapGraphEdge* edge) {
   return const_cast<i::HeapGraphEdge*>(
       reinterpret_cast<const i::HeapGraphEdge*>(edge));
 }
 
 
@@ skipping 222 matching lines @@
   return reinterpret_cast<i::HeapProfiler*>(this)->
       GetMemorySizeUsedByProfiler();
 }
 
 
 void HeapProfiler::SetRetainedObjectInfo(UniqueId id,
                                          RetainedObjectInfo* info) {
   reinterpret_cast<i::HeapProfiler*>(this)->SetRetainedObjectInfo(id, info);
 }
 
+Sample* Sampler::GetSample(Isolate* isolate,
+                           Sample* sample) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+
+  i::Logger* logger = internal_isolate->logger();
+  if (logger == NULL) return NULL;
+
+  i::Sampler* sampler = logger->sampler();
+  if (sampler == NULL) return NULL;
+
+  // 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.
+
+  return sampler->GetSample(sample);
+}
 
 v8::Testing::StressType internal::Testing::stress_type_ =
     v8::Testing::kStressTypeOpt;
 
 
 void Testing::SetStressRunType(Testing::StressType type) {
   internal::Testing::set_stress_type(type);
 }
 
 
@@ skipping 220 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal