Revision: 3663
Author: [email protected]
Date: Wed Jan 20 08:56:49 2010
Log: Support backtrace debug command when stack is empty
Review URL: http://codereview.chromium.org/536089
http://code.google.com/p/v8/source/detail?r=3663
Modified:
/branches/bleeding_edge/test/cctest/test-debug.cc
=======================================
--- /branches/bleeding_edge/test/cctest/test-debug.cc Tue Jan 19 07:40:42
2010
+++ /branches/bleeding_edge/test/cctest/test-debug.cc Wed Jan 20 08:56:49
2010
@@ -3870,6 +3870,23 @@
res = atoi(pos + strlen(breakpoints));
return res;
}
+
+
+// We match parts of the message to get total frames number.
+int GetTotalFramesInt(char *message) {
+ const char* prefix = "\"totalFrames\":";
+ char* pos = strstr(message, prefix);
+ if (pos == NULL) {
+ return -1;
+ }
+ pos += strlen(prefix);
+ char* pos_end = pos;
+ long res = strtol(pos, &pos_end, 10);
+ if (pos_end == pos) {
+ return -1;
+ }
+ return static_cast<int>(res);
+}
/* Test MessageQueues */
@@ -5825,6 +5842,58 @@
v8::Debug::SetMessageHandler2(NULL);
CheckDebuggerUnloaded();
}
+
+
+struct BracktraceData {
+ static int frame_counter;
+ static void MessageHandler(const v8::Debug::Message& message) {
+ char print_buffer[1000];
+ v8::String::Value json(message.GetJSON());
+ Utf16ToAscii(*json, json.length(), print_buffer, 1000);
+
+ if (strstr(print_buffer, "backtrace") == NULL) {
+ return;
+ }
+ frame_counter = GetTotalFramesInt(print_buffer);
+ }
+};
+
+int BracktraceData::frame_counter;
+
+
+// Test that debug messages get processed when ProcessDebugMessages is
called.
+TEST(Backtrace) {
+ v8::HandleScope scope;
+ DebugLocalContext env;
+
+ v8::Debug::SetMessageHandler2(BracktraceData::MessageHandler);
+
+ const int kBufferSize = 1000;
+ uint16_t buffer[kBufferSize];
+ const char* scripts_command =
+ "{\"seq\":0,"
+ "\"type\":\"request\","
+ "\"command\":\"backtrace\"}";
+
+ // Check backtrace from ProcessDebugMessages.
+ BracktraceData::frame_counter = -10;
+ v8::Debug::SendCommand(buffer, AsciiToUtf16(scripts_command, buffer));
+ v8::Debug::ProcessDebugMessages();
+ CHECK_EQ(BracktraceData::frame_counter, 0);
+
+ v8::Handle<v8::String> void0 = v8::String::New("void(0)");
+ v8::Handle<v8::Script> script = v8::Script::Compile(void0, void0);
+
+ // Check backtrace from "void(0)" script.
+ BracktraceData::frame_counter = -10;
+ v8::Debug::SendCommand(buffer, AsciiToUtf16(scripts_command, buffer));
+ script->Run();
+ CHECK_EQ(BracktraceData::frame_counter, 1);
+
+ // Get rid of the debug message handler.
+ v8::Debug::SetMessageHandler2(NULL);
+ CheckDebuggerUnloaded();
+}
TEST(GetMirror) {
--
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