v8/test/mjsunit/debug-scripts-request.js
yangguo@chromium.org 32f433c12e Fix leak in debug mirror cache.
When fetching loaded scripts, mirror objects are created and cached.
If the cache is not cleared, it holds script objects alive.

This also fixes a minor issue with script unloading.

R=ulan@chromium.org
BUG=376534
LOG=N

Review URL: https://codereview.chromium.org/296953005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21477 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-05-26 07:05:56 +00:00

113 lines
4.1 KiB
JavaScript

// Copyright 2008 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
// State to check that the listener code was invoked and that no exceptions
// occoured.
listenerComplete = false;
exception = false;
var base_request = '"seq":0,"type":"request","command":"scripts"'
function safeEval(code) {
try {
return eval('(' + code + ')');
} catch (e) {
assertEquals(void 0, e);
return undefined;
}
}
function testArguments(dcp, arguments, success) {
var request = '{' + base_request + ',"arguments":' + arguments + '}'
var json_response = dcp.processDebugJSONRequest(request);
var response = safeEval(json_response);
if (success) {
assertTrue(response.success, json_response);
} else {
assertFalse(response.success, json_response);
}
}
function listener(event, exec_state, event_data, data) {
try {
if (event == Debug.DebugEvent.Break) {
// Get the debug command processor.
var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
// Test illegal scripts requests.
testArguments(dcp, '{"types":"xx"}', false);
// Test legal scripts requests.
testArguments(dcp, '{}', true);
testArguments(dcp, '{"types":1}', true);
testArguments(dcp, '{"types":2}', true);
testArguments(dcp, '{"types":4}', true);
testArguments(dcp, '{"types":7}', true);
testArguments(dcp, '{"types":255}', true);
// Test request for all scripts.
var request = '{' + base_request + '}'
var response = safeEval(dcp.processDebugJSONRequest(request));
assertTrue(response.success);
// Test filtering by id. We have to get at least one script back, but
// the exact number depends on the timing of GC.
assertTrue(response.body.length >= 1);
var script = response.body[0];
var request = '{' + base_request + ',"arguments":{"ids":[' +
script.id + ']}}';
var response = safeEval(dcp.processDebugJSONRequest(request));
assertTrue(response.success);
assertEquals(1, response.body.length);
assertEquals(script.id, response.body[0].id);
// Indicate that all was processed.
listenerComplete = true;
}
} catch (e) {
exception = e
};
};
// Add the debug event listener.
Debug.setListener(listener);
// Call debugger to invoke the debug event listener.
debugger;
// Make sure that the debug event listener vas invoked with no exceptions.
assertTrue(listenerComplete,
"listener did not run to completion, exception: " + exception);
assertFalse(exception, "exception in listener")
Debug.setListener(null);