v8/test/mjsunit/debug-handle.js

253 lines
8.4 KiB
JavaScript
Raw Normal View History

// Copyright 2009 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
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug
listenerComplete = false;
exception = false;
function safeEval(code) {
try {
return eval('(' + code + ')');
} catch (e) {
assertEquals(void 0, e);
return undefined;
}
}
// Send an evaluation request and return the handle of the result.
function evaluateRequest(exec_state, arguments) {
// Get the debug command processor.
var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
// The base part of all evaluate requests.
var base_request = '"seq":0,"type":"request","command":"evaluate"'
// Generate request with the supplied arguments.
var request;
if (arguments) {
request = '{' + base_request + ',"arguments":' + arguments + '}';
} else {
request = '{' + base_request + '}'
}
var response = safeEval(dcp.processDebugJSONRequest(request));
assertTrue(response.success, request + ' -> ' + response.message);
return response.body.handle;
}
// Send a lookup request and return the evaluated JSON response.
function lookupRequest(exec_state, arguments, success) {
// Get the debug command processor.
var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
// The base part of all lookup requests.
var base_request = '"seq":0,"type":"request","command":"lookup"'
// Generate request with the supplied arguments.
var request;
if (arguments) {
request = '{' + base_request + ',"arguments":' + arguments + '}';
} else {
request = '{' + base_request + '}'
}
var response = safeEval(dcp.processDebugJSONRequest(request));
if (success) {
assertTrue(response.success, request + ' -> ' + response.message);
} else {
assertFalse(response.success, request + ' -> ' + response.message);
}
assertEquals(response.running, dcp.isRunning(), request + ' -> expected not running');
return response;
}
function listener(event, exec_state, event_data, data) {
try {
if (event == Debug.DebugEvent.Break) {
// Test some illegal lookup requests.
lookupRequest(exec_state, void 0, false);
lookupRequest(exec_state, '{"handles":["a"]}', false);
lookupRequest(exec_state, '{"handles":[-1]}', false);
// Evaluate and get some handles.
var handle_o = evaluateRequest(exec_state, '{"expression":"o"}');
var handle_p = evaluateRequest(exec_state, '{"expression":"p"}');
var handle_b = evaluateRequest(exec_state, '{"expression":"a"}');
var handle_a = evaluateRequest(exec_state, '{"expression":"b","frame":1}');
assertEquals(handle_o, handle_a);
assertEquals(handle_a, handle_b);
assertFalse(handle_o == handle_p, "o and p have he same handle");
var response;
var count;
response = lookupRequest(exec_state, '{"handles":[' + handle_o + ']}', true);
var obj = response.body[handle_o];
assertTrue(!!obj, 'Object not found: ' + handle_o);
assertEquals(handle_o, obj.handle);
count = 0;
for (i in obj.properties) {
switch (obj.properties[i].name) {
case 'o':
obj.properties[i].ref = handle_o;
count++;
break;
case 'p':
obj.properties[i].ref = handle_p;
count++;
break;
}
}
assertEquals(2, count, 'Either "o" or "p" not found');
response = lookupRequest(exec_state, '{"handles":[' + handle_p + ']}', true);
obj = response.body[handle_p];
assertTrue(!!obj, 'Object not found: ' + handle_p);
assertEquals(handle_p, obj.handle);
// Check handles for functions on the stack.
var handle_f = evaluateRequest(exec_state, '{"expression":"f"}');
var handle_g = evaluateRequest(exec_state, '{"expression":"g"}');
var handle_caller = evaluateRequest(exec_state, '{"expression":"f.caller"}');
assertFalse(handle_f == handle_g, "f and g have he same handle");
assertEquals(handle_g, handle_caller, "caller for f should be g");
response = lookupRequest(exec_state, '{"handles":[' + handle_f + ']}', true);
obj = response.body[handle_f];
assertEquals(handle_f, obj.handle);
count = 0;
for (i in obj.properties) {
var ref = obj.properties[i].ref;
var arguments = '{"handles":[' + ref + ']}';
switch (obj.properties[i].name) {
case 'name':
var response_name;
response_name = lookupRequest(exec_state, arguments, true);
assertEquals('string', response_name.body[ref].type);
assertEquals("f", response_name.body[ref].value);
count++;
break;
case 'length':
var response_length;
response_length = lookupRequest(exec_state, arguments, true);
assertEquals('number', response_length.body[ref].type);
assertEquals(1, response_length.body[ref].value);
count++;
break;
case 'caller':
assertEquals(handle_g, obj.properties[i].ref);
count++;
break;
}
}
assertEquals(3, count, 'Either "name", "length" or "caller" not found');
// Resolve all at once.
var refs = [];
for (i in obj.properties) {
refs.push(obj.properties[i].ref);
}
var arguments = '{"handles":[' + refs.join(',') + ']}';
response = lookupRequest(exec_state, arguments, true);
count = 0;
for (i in obj.properties) {
var ref = obj.properties[i].ref;
var val = response.body[ref];
assertTrue(!!val, 'Failed to lookup "' + obj.properties[i].name + '"');
switch (obj.properties[i].name) {
case 'name':
assertEquals('string', val.type);
assertEquals("f", val.value);
count++;
break;
case 'length':
assertEquals('number', val.type);
assertEquals(1, val.value);
count++;
break;
case 'caller':
assertEquals('function', val.type);
assertEquals(handle_g, ref);
count++;
break;
}
}
assertEquals(3, count, 'Either "name", "length" or "caller" not found');
count = 0;
for (var handle in response.body) {
assertTrue(refs.indexOf(parseInt(handle)) != -1,
'Handle not in the request: ' + handle);
count++;
}
assertEquals(count, obj.properties.length,
'Unexpected number of resolved objects');
// Indicate that all was processed.
listenerComplete = true;
}
} catch (e) {
exception = e
};
};
// Add the debug event listener.
Debug.setListener(listener);
function f(a) {
debugger;
};
function g(b) {
f(b);
};
// Set a break point at return in f and invoke g to hit the breakpoint.
Debug.setBreakPoint(f, 2, 0);
o = {};
p = {}
o.o = o;
o.p = p;
p.o = o;
p.p = p;
g(o);
assertFalse(exception, "exception in listener")
// Make sure that the debug event listener vas invoked.
assertTrue(listenerComplete, "listener did not run to completion: " + exception);