[profiler] Emit runtime call stats into sampling profile

src/profiler/tick-sample.cc

 // Copyright 2013 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/profiler/tick-sample.h"
 
 #include "include/v8-profiler.h"
+#include "src/counters.h"
 #include "src/frames-inl.h"
 #include "src/msan.h"
 #include "src/simulator.h"
 #include "src/vm-state-inl.h"
 
 namespace v8 {
 namespace {
 
 bool IsSamePage(i::byte* ptr1, i::byte* ptr2) {
   const uint32_t kPageSize = 4096;
@@ skipping 212 matching lines @@
   // e.g. it is used as a general purpose register in the function.
   // Bailout.
   if (it.done()) return false;
 
   size_t i = 0;
   if (record_c_entry_frame == kIncludeCEntryFrame &&
       (it.top_frame_type() == internal::StackFrame::EXIT ||
        it.top_frame_type() == internal::StackFrame::BUILTIN_EXIT)) {
     frames[i++] = isolate->c_function();
   }
+  i::RuntimeCallTimer* timer =
+      isolate->counters()->runtime_call_stats()->current_timer();
   for (; !it.done() && i < frames_limit; it.Advance()) {
+    while (timer && reinterpret_cast<i::Address>(timer) < it.frame()->fp() &&
+           i < frames_limit) {
+      frames[i++] = reinterpret_cast<i::Address>(timer->counter());
+      timer = timer->parent();
+    }
+    if (i == frames_limit) break;
     if (!it.frame()->is_interpreted()) {
       frames[i++] = it.frame()->pc();
       continue;
     }
     // For interpreted frames use the bytecode array pointer as the pc.
     i::InterpretedFrame* frame = static_cast<i::InterpretedFrame*>(it.frame());
     // Since the sampler can interrupt execution at any point the
     // bytecode_array might be garbage, so don't dereference it.
     i::Address bytecode_array =
         reinterpret_cast<i::Address>(frame->GetBytecodeArray()) -
@@ skipping 12 matching lines @@
                       bool use_simulator_reg_state) {
   v8::TickSample::Init(reinterpret_cast<v8::Isolate*>(isolate), state,
                        record_c_entry_frame, update_stats,
                        use_simulator_reg_state);
   if (pc == nullptr) return;
   timestamp = base::TimeTicks::HighResolutionNow();
 }
 
 }  // namespace internal
 }  // namespace v8