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// Copyright 2013 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.
var delegateList = {
"load scripts" : load_scripts,
"run" : run,
}
self.addEventListener("message", function(event) {
var call = delegateList[event.data["call"]];
var result = call(event.data["args"]);
}, false);
function log(text) {
self.postMessage({ "call" : "log", "args" : text });
}
function displayplot(content) {
self.postMessage({ "call" : "displayplot", "args" : content});
}
function displayprof(content) {
self.postMessage({ "call" : "displayprof", "args" : content});
}
function setRange(start, end) {
self.postMessage({ "call" : "range",
"args" : { "start" : start, "end" : end } });
}
function time(name, fun) {
log(name + "...");
var start = Date.now();
fun();
log(" took " + (Date.now() - start) / 1000 + "s.\n");
}
function load_scripts(scripts) {
time("Loading scripts",
function() { for (var i in scripts) importScripts(scripts[i]); });
self.postMessage({ "call" : "script" });
}
function run(args) {
var file = args["file"];
var resx = args["resx"];
var resy = args["resy"];
var distortion = args["distortion"];
var range_start_override = args["range_start"];
var range_end_override = args["range_end"];
var reader = new FileReaderSync();
var content_lines;
time("Reading log file (" + (file.size / 1024).toFixed(1) + " kB)",
function() {
var content = reader.readAsText(file);
content_lines = content.split("\n");
});
time("Producing statistical profile",
function() {
var profile = "";
print = function(text) { profile += text + "\n"; };
// Dummy entries provider, as we cannot call nm.
var entriesProvider = new UnixCppEntriesProvider("", "");
var targetRootFS = "";
var separateIc = false;
var callGraphSize = 5;
var ignoreUnknown = true;
var stateFilter = null;
var snapshotLogProcessor = null;
var range = range_start_override + "," + range_end_override;
var tickProcessor = new TickProcessor(entriesProvider,
separateIc,
callGraphSize,
ignoreUnknown,
stateFilter,
snapshotLogProcessor,
distortion,
range);
for (var i = 0; i < content_lines.length; i++) {
tickProcessor.processLogLine(content_lines[i]);
}
tickProcessor.printStatistics();
displayprof(profile);
});
var input_file_name = "input_temp";
var output_file_name = "output.svg";
var psc = new PlotScriptComposer(resx, resy);
var objects = 0;
time("Collecting events (" + content_lines.length + " entries)",
function() {
var line_cursor = 0;
var input = function() { return content_lines[line_cursor++]; };
psc.collectData(input, distortion);
psc.findPlotRange(range_start_override,
range_end_override,
setRange);
});
time("Assembling plot script",
function() {
var plot_script = "";
var output = function(text) { plot_script += text + "\n"; };
output("set terminal svg size " + resx + "," + resy +
" enhanced font \"Helvetica,10\"");
output("set output \""+ output_file_name + "\"");
objects = psc.assembleOutput(output);
if (FS.findObject(input_file_name)) {
FS.deleteFile(input_file_name);
}
var arrc = Module["intArrayFromString"](plot_script, true);
FS.createDataFile("/", input_file_name, arrc);
});
time("Running gnuplot (" + objects + " objects)",
function() { Module.run([input_file_name]); });
displayplot(FS.findObject(output_file_name));
}
var Module = {
"noInitialRun": true,
print: function(text) {
self.postMessage({"call": "error", "args": text});
},
printErr: function(text) {
self.postMessage({"call": "error", "args": text});
},
};
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