Move StackTracer to sampler.h

test/cctest/test-log-stack-tracer.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 33 matching lines @@
 using v8::Object;
 using v8::Script;
 using v8::String;
 using v8::Value;
 
 using v8::internal::byte;
 using v8::internal::Address;
 using v8::internal::Handle;
 using v8::internal::Isolate;
 using v8::internal::JSFunction;
-using v8::internal::StackTracer;
 using v8::internal::TickSample;
 
 
 static struct {
   TickSample* sample;
 } trace_env = { NULL };
 
 
 static void InitTraceEnv(TickSample* sample) {
   trace_env.sample = sample;
 }
 
 
 static void DoTrace(Address fp) {
   trace_env.sample->fp = fp;
   // sp is only used to define stack high bound
   trace_env.sample->sp =
       reinterpret_cast<Address>(trace_env.sample) - 10240;
-  StackTracer::Trace(Isolate::Current(), trace_env.sample);
+  trace_env.sample->Trace(Isolate::Current());
 }
 
 
 // Hide c_entry_fp to emulate situation when sampling is done while
 // pure JS code is being executed
 static void DoTraceHideCEntryFPAddress(Address fp) {
   v8::internal::Address saved_c_frame_fp =
       *(Isolate::Current()->c_entry_fp_address());
   CHECK(saved_c_frame_fp);
   *(Isolate::Current()->c_entry_fp_address()) = 0;
@@ skipping 167 matching lines @@
   // when called as a constructor.
   CreateFramePointerGrabberConstructor("FPGrabber");
 
   // Compile the script.
   CompileRun(trace_call_buf.start());
 }
 
 
 // This test verifies that stack tracing works when called during
 // execution of a native function called from JS code. In this case,
-// StackTracer uses Isolate::c_entry_fp as a starting point for stack
+// TickSample::Trace uses Isolate::c_entry_fp as a starting point for stack
 // walking.
 TEST(CFromJSStackTrace) {
   // BUG(1303) Inlining of JSFuncDoTrace() in JSTrace below breaks this test.
   i::FLAG_use_inlining = false;
 
   TickSample sample;
   InitTraceEnv(&sample);
 
   CcTest::InitializeVM(TRACE_EXTENSION);
   v8::HandleScope scope(CcTest::isolate());
   // Create global function JSFuncDoTrace which calls
   // extension function trace() with the current frame pointer value.
   CreateTraceCallerFunction("JSFuncDoTrace", "trace");
   Local<Value> result = CompileRun(
       "function JSTrace() {"
       "         JSFuncDoTrace();"
       "};\n"
       "JSTrace();\n"
       "true;");
   CHECK(!result.IsEmpty());
   // When stack tracer is invoked, the stack should look as follows:
   // script [JS]
   //   JSTrace() [JS]
   //     JSFuncDoTrace() [JS] [captures EBP value and encodes it as Smi]
   //       trace(EBP) [native (extension)]
   //         DoTrace(EBP) [native]
-  //           StackTracer::Trace
+  //           TickSample::Trace
 
   CHECK(sample.external_callback);
   CHECK_EQ(FUNCTION_ADDR(TraceExtension::Trace), sample.external_callback);
 
   // Stack tracing will start from the first JS function, i.e. "JSFuncDoTrace"
   int base = 0;
   CHECK_GT(sample.frames_count, base + 1);
 
   CHECK(IsAddressWithinFuncCode("JSFuncDoTrace", sample.stack[base + 0]));
   CHECK(IsAddressWithinFuncCode("JSTrace", sample.stack[base + 1]));
 }
 
 
 // This test verifies that stack tracing works when called during
-// execution of JS code. However, as calling StackTracer requires
+// execution of JS code. However, as calling TickSample::Trace requires
 // entering native code, we can only emulate pure JS by erasing
-// Isolate::c_entry_fp value. In this case, StackTracer uses passed frame
+// Isolate::c_entry_fp value. In this case, TickSample::Trace uses passed frame
 // pointer value as a starting point for stack walking.
 TEST(PureJSStackTrace) {
   // This test does not pass with inlining enabled since inlined functions
   // don't appear in the stack trace.
   i::FLAG_use_inlining = false;
 
   TickSample sample;
   InitTraceEnv(&sample);
 
   CcTest::InitializeVM(TRACE_EXTENSION);
@@ skipping 11 matching lines @@
       "OuterJSTrace();\n"
       "true;");
   CHECK(!result.IsEmpty());
   // When stack tracer is invoked, the stack should look as follows:
   // script [JS]
   //   OuterJSTrace() [JS]
   //     JSTrace() [JS]
   //       JSFuncDoTrace() [JS]
   //         js_trace(EBP) [native (extension)]
   //           DoTraceHideCEntryFPAddress(EBP) [native]
-  //             StackTracer::Trace
+  //             TickSample::Trace
   //
 
   CHECK(sample.external_callback);
   CHECK_EQ(FUNCTION_ADDR(TraceExtension::JSTrace), sample.external_callback);
 
   // Stack sampling will start from the caller of JSFuncDoTrace, i.e. "JSTrace"
   int base = 0;
   CHECK_GT(sample.frames_count, base + 1);
   CHECK(IsAddressWithinFuncCode("JSTrace", sample.stack[base + 0]));
   CHECK(IsAddressWithinFuncCode("OuterJSTrace", sample.stack[base + 1]));
@@ skipping 19 matching lines @@
   if (depth <= 0) {
     CFuncDoTrace(0);
     return 0;
   } else {
     return CFunc(depth - 1) + 1;
   }
 }
 
 
 // This test verifies that stack tracing doesn't crash when called on
-// pure native code. StackTracer only unrolls JS code, so we can't
+// pure native code. TickSample::Trace only unrolls JS code, so we can't
 // get any meaningful info here.
 TEST(PureCStackTrace) {
   TickSample sample;
   InitTraceEnv(&sample);
   CcTest::InitializeVM(TRACE_EXTENSION);
   // Check that sampler doesn't crash
   CHECK_EQ(10, CFunc(10));
 }
 
 
 TEST(JsEntrySp) {
   CcTest::InitializeVM(TRACE_EXTENSION);
   v8::HandleScope scope(CcTest::isolate());
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("a = 1; b = a + 1;");
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("js_entry_sp();");
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("js_entry_sp_level2();");
   CHECK_EQ(0, GetJsEntrySp());
 }