test-log-stack-tracer.cc | Explore in Territory

// Copyright 2011 the V8 project authors. All rights reserved.
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// Tests of profiler-related functions from log.h

#include <stdlib.h>

#include "include/v8-function.h"
#include "src/api/api-inl.h"
#include "src/base/strings.h"
#include "src/execution/frames.h"
#include "src/execution/isolate.h"
#include "src/execution/vm-state-inl.h"
#include "src/objects/objects-inl.h"
#include "src/profiler/tick-sample.h"
#include "test/cctest/cctest.h"
#include "test/cctest/trace-extension.h"

namespace v8 {
namespace internal {

static bool IsAddressWithinFuncCode(Tagged<JSFunction> function,
                                    Isolate* isolate, void* addr) { … }

static bool IsAddressWithinFuncCode(v8::Local<v8::Context> context,
                                    Isolate* isolate, const char* func_name,
                                    void* addr) { … }

// This C++ function is called as a constructor, to grab the frame pointer
// from the calling function.  When this function runs, the stack contains
// a C_Entry frame and a Construct frame above the calling function's frame.
static void construct_call(const v8::FunctionCallbackInfo<v8::Value>& info) { … }

// Use the API to create a JSFunction object that calls the above C++ function.
void CreateFramePointerGrabberConstructor(v8::Local<v8::Context> context,
                                          const char* constructor_name) { … }


// Creates a global function named 'func_name' that calls the tracing
// function 'trace_func_name' with an actual EBP register value,
// encoded as one or two Smis.
static void CreateTraceCallerFunction(v8::Local<v8::Context> context,
                                      const char* func_name,
                                      const char* trace_func_name) { … }


// This test verifies that stack tracing works when called during
// execution of a native function called from JS code. In this case,
// TickSample::Trace uses Isolate::c_entry_fp as a starting point for stack
// walking.
TEST(CFromJSStackTrace) { … }


// This test verifies that stack tracing works when called during
// 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, TickSample::Trace uses passed frame
// pointer value as a starting point for stack walking.
TEST(PureJSStackTrace) { … }

static void CFuncDoTrace(uint8_t dummy_param) { … }

static int CFunc(int depth) { … }


// This test verifies that stack tracing doesn't crash when called on
// pure native code. TickSample::Trace only unrolls JS code, so we can't
// get any meaningful info here.
TEST(PureCStackTrace) { … }


TEST(JsEntrySp) { … }

}  // namespace internal
}  // namespace v8
chromium/v8/test/cctest/test-log-stack-tracer.cc
