Expose TickSample and its APIs in v8-profiler.h

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 86135fd83d2ab6460a8e96665a651f8a1af42f05..b280f0af23b20adda6e732cb21f402154f9bae3a 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -36,6 +36,7 @@
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
+#include "src/frames-inl.h"
 #include "src/gdb-jit.h"
 #include "src/global-handles.h"
 #include "src/icu_util.h"
@@ -7564,8 +7565,8 @@ bool Isolate::GetHeapCodeAndMetadataStatistics(
 
 void Isolate::GetStackSample(const RegisterState& state, void** frames,
                              size_t frames_limit, SampleInfo* sample_info) {
-  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
 #if defined(USE_SIMULATOR)
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   RegisterState regs;
   regs.pc = state.pc;

[alph, 2016/06/29 19:39:09]

Hmm, how these got here??? Can you please drop these three lines, as regs is an
out parameter of FillRegisters.

[lpy, 2016/06/29 20:17:39]

Done.

   regs.sp = state.sp;
@@ -7579,8 +7580,8 @@ void Isolate::GetStackSample(const RegisterState& state, void** frames,
 #else
   const RegisterState& regs = state;
 #endif
-  i::TickSample::GetStackSample(isolate, regs, i::TickSample::kSkipCEntryFrame,
-                                frames, frames_limit, sample_info);
+  TickSample::GetStackSample(this, regs, TickSample::kSkipCEntryFrame, frames,
+                             frames_limit, sample_info);
 }
 
 size_t Isolate::NumberOfPhantomHandleResetsSinceLastCall() {