test-debug.cc.svn-base

Google浏览器V8内核代码

  ClearBreakPoint(bp2);
  CHECK_EQ(0, v8::internal::GetDebuggedFunctions()->length());
  CHECK(!HasDebugInfo(foo));
  CHECK(!HasDebugInfo(bar));
}


// Test that a break point can be set at an IC store location.
TEST(BreakPointICStore) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("function foo(){bar=0;}"))->Run();
  v8::Local<v8::Function> foo =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("foo")));

  // Run without breakpoints.
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Run with breakpoint
  int bp = SetBreakPoint(foo, 0);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  // Run without breakpoints.
  ClearBreakPoint(bp);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);
}


// Test that a break point can be set at an IC load location.
TEST(BreakPointICLoad) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("bar=1"))->Run();
  v8::Script::Compile(v8::String::New("function foo(){var x=bar;}"))->Run();
  v8::Local<v8::Function> foo =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("foo")));

  // Run without breakpoints.
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Run with breakpoint
  int bp = SetBreakPoint(foo, 0);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  // Run without breakpoints.
  ClearBreakPoint(bp);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);
}


// Test that a break point can be set at an IC call location.
TEST(BreakPointICCall) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("function bar(){}"))->Run();
  v8::Script::Compile(v8::String::New("function foo(){bar();}"))->Run();
  v8::Local<v8::Function> foo =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("foo")));

  // Run without breakpoints.
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Run with breakpoint
  int bp = SetBreakPoint(foo, 0);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  // Run without breakpoints.
  ClearBreakPoint(bp);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);
}


// Test that a break point can be set at a return store location.
TEST(BreakPointReturn) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("function foo(){}"))->Run();
  v8::Local<v8::Function> foo =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("foo")));

  // Run without breakpoints.
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Run with breakpoint
  int bp = SetBreakPoint(foo, 0);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  // Run without breakpoints.
  ClearBreakPoint(bp);
  foo->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);
}


static void CallWithBreakPoints(v8::Local<v8::Object> recv,
                                v8::Local<v8::Function> f,
                                int break_point_count,
                                int call_count) {
  break_point_hit_count = 0;
  for (int i = 0; i < call_count; i++) {
    f->Call(recv, 0, NULL);
    CHECK_EQ((i + 1) * break_point_count, break_point_hit_count);
  }
}

// Test GC during break point processing.
TEST(GCDuringBreakPointProcessing) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;

  v8::Debug::AddDebugEventListener(DebugEventBreakPointCollectGarbage,
                                   v8::Undefined());
  v8::Local<v8::Function> foo;

  // Test IC store break point with garbage collection.
  foo = CompileFunction(&env, "function foo(){bar=0;}", "foo");
  SetBreakPoint(foo, 0);
  CallWithBreakPoints(env->Global(), foo, 1, 10);

  // Test IC load break point with garbage collection.
  foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo");
  SetBreakPoint(foo, 0);
  CallWithBreakPoints(env->Global(), foo, 1, 10);

  // Test IC call break point with garbage collection.
  foo = CompileFunction(&env, "function bar(){};function foo(){bar();}", "foo");
  SetBreakPoint(foo, 0);
  CallWithBreakPoints(env->Global(), foo, 1, 10);

  // Test return break point with garbage collection.
  foo = CompileFunction(&env, "function foo(){}", "foo");
  SetBreakPoint(foo, 0);
  CallWithBreakPoints(env->Global(), foo, 1, 25);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointCollectGarbage);
}


// Call the function three times with different garbage collections in between
// and make sure that the break point survives.
static void CallAndGC(v8::Local<v8::Object> recv, v8::Local<v8::Function> f) {
  break_point_hit_count = 0;

  for (int i = 0; i < 3; i++) {
    // Call function.
    f->Call(recv, 0, NULL);
    CHECK_EQ(1 + i * 3, break_point_hit_count);

    // Scavenge and call function.
    Heap::CollectGarbage(0, v8::internal::NEW_SPACE);
    f->Call(recv, 0, NULL);
    CHECK_EQ(2 + i * 3, break_point_hit_count);

    // Mark sweep (and perhaps compact) and call function.
    Heap::CollectAllGarbage();
    f->Call(recv, 0, NULL);
    CHECK_EQ(3 + i * 3, break_point_hit_count);
  }
}


// Test that a break point can be set at a return store location.
TEST(BreakPointSurviveGC) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;

  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Local<v8::Function> foo;

  // Test IC store break point with garbage collection.
  foo = CompileFunction(&env, "function foo(){bar=0;}", "foo");
  SetBreakPoint(foo, 0);
  CallAndGC(env->Global(), foo);

  // Test IC load break point with garbage collection.
  foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo");
  SetBreakPoint(foo, 0);
  CallAndGC(env->Global(), foo);

  // Test IC call break point with garbage collection.
  foo = CompileFunction(&env, "function bar(){};function foo(){bar();}", "foo");
  SetBreakPoint(foo, 0);
  CallAndGC(env->Global(), foo);

  // Test return break point with garbage collection.
  foo = CompileFunction(&env, "function foo(){}", "foo");
  SetBreakPoint(foo, 0);
  CallAndGC(env->Global(), foo);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);
}


// Test that break points can be set using the global Debug object.
TEST(BreakPointThroughJavaScript) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  env.ExposeDebug();

  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("function bar(){}"))->Run();
  v8::Script::Compile(v8::String::New("function foo(){bar();bar();}"))->Run();
  //                                               012345678901234567890
  //                                                         1         2
  // Break points are set at position 3 and 9
  v8::Local<v8::Script> foo = v8::Script::Compile(v8::String::New("foo()"));

  // Run without breakpoints.
  foo->Run();
  CHECK_EQ(0, break_point_hit_count);

  // Run with one breakpoint
  int bp1 = SetBreakPointFromJS("foo", 0, 3);
  foo->Run();
  CHECK_EQ(1, break_point_hit_count);
  foo->Run();
  CHECK_EQ(2, break_point_hit_count);

  // Run with two breakpoints
  int bp2 = SetBreakPointFromJS("foo", 0, 9);
  foo->Run();
  CHECK_EQ(4, break_point_hit_count);
  foo->Run();
  CHECK_EQ(6, break_point_hit_count);

  // Run with one breakpoint
  ClearBreakPointFromJS(bp2);
  foo->Run();
  CHECK_EQ(7, break_point_hit_count);
  foo->Run();
  CHECK_EQ(8, break_point_hit_count);

  // Run without breakpoints.
  ClearBreakPointFromJS(bp1);
  foo->Run();
  CHECK_EQ(8, break_point_hit_count);

  v8::Debug::RemoveDebugEventListener(DebugEventBreakPointHitCount);

  // Make sure that the break point numbers are consecutive.
  CHECK_EQ(1, bp1);
  CHECK_EQ(2, bp2);
}


// Test that break points can be set using the global Debug object.
TEST(ScriptBreakPointThroughJavaScript) {
  break_point_hit_count = 0;
  v8::HandleScope scope;
  DebugLocalContext env;
  env.ExposeDebug();

  v8::Debug::AddDebugEventListener(DebugEventBreakPointHitCount,
                                   v8::Undefined());
  v8::Script::Compile(v8::String::New("function foo(){bar();bar();}"))->Run();

  v8::Local<v8::String> script = v8::String::New(
    "function f() {\n"
    "  function h() {\n"
    "    a = 0;  // line 2\n"
    "  }\n"
    "  b = 1;  // line 4\n"
    "  return h();\n"
    "}\n"
    "\n"
    "function g() {\n"
    "  function h() {\n"
    "    a = 0;\n"
    "  }\n"
    "  b = 2;  // line 12\n"
    "  h();\n"
    "  b = 3;  // line 14\n"
    "  f();    // line 15\n"
    "}");

  // Compile the script and get the two functions.
  v8::ScriptOrigin origin =
      v8::ScriptOrigin(v8::String::New("test"));
  v8::Script::Compile(script, &origin)->Run();
  v8::Local<v8::Function> f =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("f")));
  v8::Local<v8::Function> g =
      v8::Local<v8::Function>::Cast(env->Global()->Get(v8::String::New("g")));

  // Call f and g without break points.
  break_point_hit_count = 0;
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Call f and g with break point on line 12.
  int sbp1 = SetScriptBreakPointFromJS("test", 12, 0);
  break_point_hit_count = 0;
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);

  // Remove the break point again.
  break_point_hit_count = 0;
  ClearBreakPointFromJS(sbp1);
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);

  // Call f and g with break point on line 2.
  int sbp2 = SetScriptBreakPointFromJS("test", 2, 0);
  break_point_hit_count = 0;
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(1, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);

  // Call f and g with break point on line 2, 4, 12, 14 and 15.
  int sbp3 = SetScriptBreakPointFromJS("test", 4, 0);
  int sbp4 = SetScriptBreakPointFromJS("test", 12, 0);
  int sbp5 = SetScriptBreakPointFromJS("test", 14, 0);
  int sbp6 = SetScriptBreakPointFromJS("test", 15, 0);
  break_point_hit_count = 0;
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(2, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(7, break_point_hit_count);

  // Remove the all the break points again.
  break_point_hit_count = 0;
  ClearBreakPointFromJS(sbp2);
  ClearBreakPointFromJS(sbp3);
  ClearBreakPointFromJS(sbp4);
  ClearBreakPointFromJS(sbp5);
  ClearBreakPointFromJS(sbp6);
  f->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);
  g->Call(env->Global(), 0, NULL);
  CHECK_EQ(0, break_point_hit_count);