mirror of https://github.com/lukechilds/node.git
Browse Source
Bugs fixed: * v0.12 and later: in-object properties not printing correctly. * 64-bit: not printing external strings correctly (offset was hardcoded for 32-bit). This would happen with "::jsstack -vn0" because the script "node.js" wasn't printed correctly, at least with 0.10 core files. * 64-bit: printing JS source (via "::jsstack -v") emits errors and shows the wrong code. * Several build warnings. * Two-byte strings are unnecessarily truncated. * Could print friendlier note when given obviously bogus function token positions. New features: * ::jsstack prints much cleaner output by default. * ::jsprint keys are now quoted. * ::jsstack -v includes "this" value for each function on the stack. * ::jsstack -v includes more details about each argument (constructor names for each object). * new commands: ::jsconstructor, ::jsfunctions, ::jssource, ::nodebuffer and ::v8internal. * ::findjsobjects and ::jsprint hidden flags for developers to measure and improve test coverage. * internal jsobj_properties() function is much better documented. Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>v0.12.0-release
Dave Pacheco
10 years ago
committed by
Julien Gilli
Julien Gilli
7 changed files with 1524 additions and 220 deletions
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var common = require('../common'); |
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var assert = require('assert'); |
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var os = require('os'); |
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var path = require('path'); |
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var util = require('util'); |
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if (os.type() != 'SunOS') { |
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console.error('Skipping because postmortem debugging not available.'); |
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process.exit(0); |
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} |
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/* |
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* We're going to look specifically for this function and buffer in the core |
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* file. |
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*/ |
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function myTestFunction() |
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{ |
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[ 1 ].forEach(function myIterFunction(t) {}); |
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return (new Buffer(bufstr)); |
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} |
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var bufstr, mybuffer; |
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/* |
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* Run myTestFunction() three times to create multiple instances of |
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* myIterFunction. |
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*/ |
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bufstr = 'Hello, test suite!'; |
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mybuffer = myTestFunction(bufstr); |
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mybuffer = myTestFunction(bufstr); |
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mybuffer = myTestFunction(bufstr); |
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mybuffer.my_buffer = true; |
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/* |
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* Now we're going to fork ourselves to gcore |
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*/ |
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var spawn = require('child_process').spawn; |
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var prefix = '/var/tmp/node'; |
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var corefile = prefix + '.' + process.pid; |
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var tmpfile = '/var/tmp/node-postmortem-func' + '.' + process.pid; |
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var gcore = spawn('gcore', [ '-o', prefix, process.pid + '' ]); |
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var output = ''; |
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var unlinkSync = require('fs').unlinkSync; |
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var args = [ corefile ]; |
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var mybuffer; |
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if (process.env.MDB_LIBRARY_PATH && process.env.MDB_LIBRARY_PATH != '') |
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args = args.concat([ '-L', process.env.MDB_LIBRARY_PATH ]); |
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gcore.stderr.on('data', function (data) { |
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console.log('gcore: ' + data); |
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}); |
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gcore.on('exit', function (code) { |
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if (code != 0) { |
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console.error('gcore exited with code ' + code); |
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process.exit(code); |
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} |
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var mdb = spawn('mdb', args, { stdio: 'pipe' }); |
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mdb.on('exit', function (code) { |
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unlinkSync(tmpfile); |
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var retained = '; core retained as ' + corefile; |
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if (code != 0) { |
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console.error('mdb exited with code ' + util.inspect(code) + retained); |
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process.exit(code); |
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} |
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var lines = output.split(/\n/); |
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var current = null, testname = null; |
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var whichtest = -1; |
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var i; |
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for (i = 0; i < lines.length; i++) { |
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if (lines[i].indexOf('test: ') === 0) { |
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if (current !== null) { |
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console.error('verifying ' + testname + ' using ' + |
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verifiers[whichtest].name); |
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verifiers[whichtest](current); |
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} |
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whichtest++; |
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current = []; |
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testname = lines[i]; |
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continue; |
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} |
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if (current !== null) |
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current.push(lines[i]); |
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} |
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console.error('verifying ' + testname + ' using ' + |
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verifiers[whichtest].name); |
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verifiers[whichtest](current); |
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unlinkSync(corefile); |
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process.exit(0); |
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}); |
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mdb.stdout.on('data', function (data) { |
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output += data; |
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}); |
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mdb.stderr.on('data', function (data) { |
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console.log('mdb stderr: ' + data); |
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}); |
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var verifiers = []; |
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var buffer; |
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verifiers.push(function verifyConstructor(testlines) { |
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assert.deepEqual(testlines, [ 'Buffer' ]); |
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}); |
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verifiers.push(function verifyNodebuffer(testlines) { |
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assert.equal(testlines.length, 1); |
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assert.ok(/^[0-9a-fA-F]+$/.test(testlines[0])); |
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buffer = testlines[0]; |
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}); |
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verifiers.push(function verifyBufferContents(testlines) { |
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assert.equal(testlines.length, 1); |
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assert.equal(testlines[0], '0x' + buffer + ': Hello'); |
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}); |
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verifiers.push(function verifyV8internal(testlines) { |
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assert.deepEqual(testlines, [ buffer ]); |
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}); |
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verifiers.push(function verifyJsfunctionN(testlines) { |
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assert.equal(testlines.length, 2); |
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var parts = testlines[1].trim().split(/\s+/); |
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assert.equal(parts[1], 1); |
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assert.equal(parts[2], 'myTestFunction'); |
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assert.ok(parts[3].indexOf('test-postmortem-details.js') != -1); |
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}); |
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verifiers.push(function verifyJsfunctionS(testlines) { |
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var foundtest = false, founditer = false; |
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assert.ok(testlines.length > 1); |
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testlines.forEach(function (line) { |
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var parts = line.trim().split(/\s+/); |
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if (parts[2] == 'myIterFunction') { |
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assert.equal(parts[1], '3'); |
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founditer = true; |
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} else if (parts[2] == 'myTestFunction') { |
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foundtest = true; |
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assert.equal(parts[1], '1'); |
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} |
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}); |
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assert.ok(foundtest); |
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assert.ok(founditer); |
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}); |
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verifiers.push(function verifyJssource(testlines) { |
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var content = testlines.join('\n'); |
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assert.ok(testlines[0].indexOf('test-postmortem-details.js') != -1); |
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assert.ok(content.indexOf('function myTestFunction()\n') != -1); |
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assert.ok(content.indexOf('return (new Buffer(bufstr));\n') != -1); |
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}); |
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var mod = util.format('::load %s\n', |
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path.join(__dirname, |
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'..', |
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'..', |
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'out', |
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'Release', |
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'mdb_v8.so')); |
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mdb.stdin.write(mod); |
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mdb.stdin.write('!echo test: jsconstructor\n'); |
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mdb.stdin.write('::findjsobjects -p my_buffer | ::findjsobjects | ' + |
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'::jsprint -b length ! awk -F: \'$2 == ' + bufstr.length + '{ print $1 }\'' + |
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'| head -1 > ' + tmpfile + '\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::jsconstructor\n'); |
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mdb.stdin.write('!echo test: nodebuffer\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::nodebuffer\n'); |
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mdb.stdin.write('!echo test: nodebuffer contents\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::nodebuffer | ::eval "./ccccc"\n'); |
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mdb.stdin.write('!echo test: v8internal\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::v8print ! awk \'$2 == "elements"{' + |
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'print $4 }\' > ' + tmpfile + '\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::v8internal 0\n'); |
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mdb.stdin.write('!echo test: jsfunctions -n\n'); |
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mdb.stdin.write('::jsfunctions -n myTestFunction ! cat\n'); |
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mdb.stdin.write('!echo test: jsfunctions -s\n'); |
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mdb.stdin.write('::jsfunctions -s test-postmortem-details.js ! cat\n'); |
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mdb.stdin.write('!echo test: jssource\n'); |
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mdb.stdin.write('::jsfunctions -n myTestFunction ! ' + |
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'awk \'NR == 2 {print $1}\' | head -1 > ' + tmpfile + '\n'); |
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mdb.stdin.write('::cat ' + tmpfile + ' | ::jssource -n 0\n'); |
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mdb.stdin.end(); |
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}); |
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