profview: View source code of functions with samples inline.
If profiling is done with --log-source-code profview will now display a "View source" link for each function in the tree view. Clicking this will show a new source viewer, with sampled lines highlighted. See the associated bug for screenshots. This patch also fixes a bug in the profiler where the source info of only the first code object for each function would be logged, and includes some refactoring. Bug: v8:6240 Change-Id: Ib96a9cfc54543d0dc9bef4657cdeb96ce28b223c Reviewed-on: https://chromium-review.googlesource.com/1194231 Commit-Queue: Bret Sepulveda <bsep@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/master@{#55542}
This commit is contained in:
Bret Sepulveda
Commit Bot
parent
33f2012efd
commit
b9cb78a705
@ -1323,7 +1323,7 @@ void Logger::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag,
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// <script-offset> is the position within the script
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// <inlining-id> is the offset in the <inlining> table
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// <inlining> table is a sequence of strings of the form
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// F<function-id>O<script-offset>[I<inlining-id>
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// F<function-id>O<script-offset>[I<inlining-id>]
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// where
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// <function-id> is an index into the <fns> function table
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// <fns> is the function table encoded as a sequence of strings
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@ -1335,12 +1335,8 @@ void Logger::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag,
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<< shared->EndPosition() << kNext;
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SourcePositionTableIterator iterator(code->source_position_table());
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bool is_first = true;
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bool hasInlined = false;
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for (; !iterator.done(); iterator.Advance()) {
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if (is_first) {
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is_first = false;
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}
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SourcePosition pos = iterator.source_position();
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msg << "C" << iterator.code_offset() << "O" << pos.ScriptOffset();
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if (pos.isInlined()) {
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@ -1604,7 +1600,7 @@ bool Logger::EnsureLogScriptSource(Script* script) {
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// Make sure the script is written to the log file.
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int script_id = script->id();
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if (logged_source_code_.find(script_id) != logged_source_code_.end()) {
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return false;
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return true;
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}
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// This script has not been logged yet.
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logged_source_code_.insert(script_id);
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@ -975,7 +975,7 @@ JsonProfile.prototype.addSourcePositions = function(
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if (!entry) return;
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var codeId = entry.codeId;
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// Resolve the inlined fucntions list.
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// Resolve the inlined functions list.
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if (inlinedFunctions.length > 0) {
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inlinedFunctions = inlinedFunctions.substring(1).split("S");
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for (var i = 0; i < inlinedFunctions.length; i++) {
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@ -22,7 +22,7 @@ found in the LICENSE file. -->
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Chrome V8 profiling log processor
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</h3>
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<input type="file" id="fileinput" />
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<input type="file" id="fileinput" /><div id="source-status"></div>
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<br>
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<hr>
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@ -59,6 +59,10 @@ found in the LICENSE file. -->
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</table>
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<div>
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Current code object: <span id="timeline-currentCode"></span>
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<button id="source-viewer-hide-button">Hide source</button>
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</div>
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<div>
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<table id="source-viewer"> </table>
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</div>
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</div>
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@ -93,9 +93,10 @@ function codeEquals(code1, code2, allowDifferentKinds = false) {
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function createNodeFromStackEntry(code, codeId, vmState) {
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let name = code ? code.name : "UNKNOWN";
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return { name, codeId, type : resolveCodeKindAndVmState(code, vmState),
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children : [], ownTicks : 0, ticks : 0 };
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let node = createEmptyNode(name);
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node.codeId = codeId;
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node.type = resolveCodeKindAndVmState(code, vmState);
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return node;
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}
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function childIdFromCode(codeId, code) {
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@ -148,29 +149,30 @@ function findNextFrame(file, stack, stackPos, step, filter) {
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}
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function addOrUpdateChildNode(parent, file, stackIndex, stackPos, ascending) {
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let stack = file.ticks[stackIndex].s;
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let vmState = file.ticks[stackIndex].vm;
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let codeId = stack[stackPos];
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let code = codeId >= 0 ? file.code[codeId] : undefined;
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if (stackPos === -1) {
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// We reached the end without finding the next step.
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// If we are doing top-down call tree, update own ticks.
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if (!ascending) {
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parent.ownTicks++;
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}
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} else {
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console.assert(stackPos >= 0 && stackPos < stack.length);
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// We found a child node.
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let childId = childIdFromCode(codeId, code);
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let child = parent.children[childId];
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if (!child) {
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child = createNodeFromStackEntry(code, codeId, vmState);
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child.delayedExpansion = { frameList : [], ascending };
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parent.children[childId] = child;
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}
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child.ticks++;
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addFrameToFrameList(child.delayedExpansion.frameList, stackIndex, stackPos);
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return;
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}
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let stack = file.ticks[stackIndex].s;
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console.assert(stackPos >= 0 && stackPos < stack.length);
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let codeId = stack[stackPos];
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let code = codeId >= 0 ? file.code[codeId] : undefined;
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// We found a child node.
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let childId = childIdFromCode(codeId, code);
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let child = parent.children[childId];
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if (!child) {
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let vmState = file.ticks[stackIndex].vm;
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child = createNodeFromStackEntry(code, codeId, vmState);
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child.delayedExpansion = { frameList : [], ascending };
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parent.children[childId] = child;
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}
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child.ticks++;
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addFrameToFrameList(child.delayedExpansion.frameList, stackIndex, stackPos);
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}
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// This expands a tree node (direct children only).
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@ -314,13 +316,7 @@ class FunctionListTree {
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this.tree = root;
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this.categories = categories;
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} else {
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this.tree = {
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name : "root",
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codeId: -1,
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children : [],
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ownTicks : 0,
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ticks : 0
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};
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this.tree = createEmptyNode("root");
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this.categories = null;
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}
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@ -339,7 +335,7 @@ class FunctionListTree {
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let codeId = stack[i];
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if (codeId < 0 || this.codeVisited[codeId]) continue;
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let code = codeId >= 0 ? file.code[codeId] : undefined;
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let code = file.code[codeId];
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if (this.filter) {
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let type = code ? code.type : undefined;
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let kind = code ? code.kind : undefined;
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@ -601,3 +597,15 @@ function computeOptimizationStats(file,
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softDeoptimizations,
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};
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}
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function normalizeLeadingWhitespace(lines) {
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let regex = /^\s*/;
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let minimumLeadingWhitespaceChars = Infinity;
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for (let line of lines) {
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minimumLeadingWhitespaceChars =
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Math.min(minimumLeadingWhitespaceChars, regex.exec(line)[0].length);
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}
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for (let i = 0; i < lines.length; i++) {
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lines[i] = lines[i].substring(minimumLeadingWhitespaceChars);
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}
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}
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@ -19,6 +19,10 @@ body {
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font-family: 'Roboto', sans-serif;
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}
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#source-status {
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display: inline-block;
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}
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.tree-row-arrow {
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margin-right: 0.2em;
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text-align: right;
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@ -35,6 +39,7 @@ body {
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.tree-row-name {
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margin-left: 0.2em;
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margin-right: 0.2em;
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}
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.codeid-link {
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@ -42,6 +47,54 @@ body {
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cursor: pointer;
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}
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.view-source-link {
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text-decoration: underline;
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cursor: pointer;
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font-size: 10pt;
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margin-left: 0.6em;
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color: #555555;
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}
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#source-viewer {
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border: 1px solid black;
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padding: 0.2em;
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font-family: 'Roboto Mono', monospace;
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white-space: pre;
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margin-top: 1em;
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margin-bottom: 1em;
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}
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#source-viewer td.line-none {
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background-color: white;
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}
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#source-viewer td.line-cold {
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background-color: #e1f5fe;
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}
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#source-viewer td.line-mediumcold {
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background-color: #b2ebf2;
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}
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#source-viewer td.line-mediumhot {
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background-color: #c5e1a5;
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}
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#source-viewer td.line-hot {
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background-color: #dce775;
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}
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#source-viewer td.line-superhot {
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background-color: #ffee58;
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}
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#source-viewer .source-line-number {
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padding-left: 0.2em;
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padding-right: 0.2em;
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color: #003c8f;
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background-color: #eceff1;
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}
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div.mode-button {
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padding: 1em 3em;
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display: inline-block;
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@ -8,6 +8,12 @@ function $(id) {
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return document.getElementById(id);
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}
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function removeAllChildren(element) {
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while (element.firstChild) {
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element.removeChild(element.firstChild);
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}
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}
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let components;
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function createViews() {
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components = [
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@ -16,6 +22,7 @@ function createViews() {
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new HelpView(),
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new SummaryView(),
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new ModeBarView(),
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new ScriptSourceView(),
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];
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}
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@ -24,6 +31,7 @@ function emptyState() {
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file : null,
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mode : null,
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currentCodeId : null,
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viewingSource: false,
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start : 0,
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end : Infinity,
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timelineSize : {
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@ -34,7 +42,8 @@ function emptyState() {
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attribution : "js-exclude-bc",
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categories : "code-type",
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sort : "time"
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}
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},
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sourceData: null
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};
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}
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@ -119,11 +128,27 @@ let main = {
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}
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},
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updateSources(file) {
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let statusDiv = $("source-status");
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if (!file) {
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statusDiv.textContent = "";
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return;
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}
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if (!file.scripts || file.scripts.length === 0) {
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statusDiv.textContent =
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"Script source not available. Run profiler with --log-source-code.";
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return;
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}
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statusDiv.textContent = "Script source is available.";
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main.currentState.sourceData = new SourceData(file);
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},
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setFile(file) {
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if (file !== main.currentState.file) {
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let lastMode = main.currentState.mode || "summary";
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main.currentState = emptyState();
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main.currentState.file = file;
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main.updateSources(file);
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main.setMode(lastMode);
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main.delayRender();
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}
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@ -137,6 +162,14 @@ let main = {
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}
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},
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setViewingSource(value) {
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if (main.currentState.viewingSource !== value) {
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main.currentState = Object.assign({}, main.currentState);
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main.currentState.viewingSource = value;
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main.delayRender();
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}
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},
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onResize() {
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main.delayRender();
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},
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@ -328,6 +361,20 @@ function createFunctionNode(name, codeId) {
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return nameElement;
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}
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function createViewSourceNode(codeId) {
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let linkElement = document.createElement("span");
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linkElement.appendChild(document.createTextNode("View source"));
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linkElement.classList.add("view-source-link");
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linkElement.onclick = (event) => {
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main.setCurrentCode(codeId);
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main.setViewingSource(true);
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// Prevent the click from bubbling to the row and causing it to
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// collapse/expand.
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event.stopPropagation();
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};
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return linkElement;
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}
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const COLLAPSED_ARROW = "\u25B6";
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const EXPANDED_ARROW = "\u25BC";
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@ -448,6 +495,10 @@ class CallTreeView {
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nameCell.appendChild(arrow);
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nameCell.appendChild(createTypeNode(node.type));
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nameCell.appendChild(createFunctionNode(node.name, node.codeId));
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if (main.currentState.sourceData &&
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main.currentState.sourceData.hasSource(node.name)) {
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nameCell.appendChild(createViewSourceNode(node.codeId));
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}
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// Inclusive ticks cell.
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c = row.insertCell();
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@ -793,8 +844,8 @@ class TimelineView {
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return;
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}
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let width = Math.round(window.innerWidth - 20);
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let height = Math.round(window.innerHeight / 5);
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let width = Math.round(document.documentElement.clientWidth - 20);
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let height = Math.round(document.documentElement.clientHeight / 5);
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if (oldState) {
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if (width === oldState.timelineSize.width &&
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@ -1010,9 +1061,7 @@ class TimelineView {
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cell.appendChild(document.createTextNode(" " + desc.text));
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}
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while (this.currentCode.firstChild) {
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this.currentCode.removeChild(this.currentCode.firstChild);
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}
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removeAllChildren(this.currentCode);
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if (currentCodeId) {
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let currentCode = file.code[currentCodeId];
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this.currentCode.appendChild(document.createTextNode(currentCode.name));
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@ -1083,10 +1132,7 @@ class SummaryView {
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}
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this.element.style.display = "inherit";
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while (this.element.firstChild) {
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this.element.removeChild(this.element.firstChild);
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}
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removeAllChildren(this.element);
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let stats = computeOptimizationStats(
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this.currentState.file, newState.start, newState.end);
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@ -1237,6 +1283,217 @@ class SummaryView {
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}
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}
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class ScriptSourceView {
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constructor() {
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this.table = $("source-viewer");
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this.hideButton = $("source-viewer-hide-button");
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this.hideButton.onclick = () => {
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main.setViewingSource(false);
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};
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}
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render(newState) {
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let oldState = this.currentState;
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if (!newState.file || !newState.viewingSource) {
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this.table.style.display = "none";
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this.hideButton.style.display = "none";
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this.currentState = null;
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return;
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}
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if (oldState) {
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if (newState.file === oldState.file &&
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newState.currentCodeId === oldState.currentCodeId &&
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newState.viewingSource === oldState.viewingSource) {
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// No change, nothing to do.
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return;
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}
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}
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this.currentState = newState;
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this.table.style.display = "inline-block";
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this.hideButton.style.display = "inline";
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removeAllChildren(this.table);
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let functionName =
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this.currentState.file.code[this.currentState.currentCodeId].name;
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let sourceView =
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this.currentState.sourceData.generateSourceView(functionName);
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for (let i = 0; i < sourceView.source.length; i++) {
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let sampleCount = sourceView.lineSampleCounts[i] || 0;
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let sampleProportion = sourceView.samplesTotal > 0 ?
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sampleCount / sourceView.samplesTotal : 0;
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let heatBucket;
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if (sampleProportion === 0) {
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heatBucket = "line-none";
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} else if (sampleProportion < 0.2) {
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heatBucket = "line-cold";
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} else if (sampleProportion < 0.4) {
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heatBucket = "line-mediumcold";
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} else if (sampleProportion < 0.6) {
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heatBucket = "line-mediumhot";
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} else if (sampleProportion < 0.8) {
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heatBucket = "line-hot";
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} else {
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heatBucket = "line-superhot";
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}
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let row = this.table.insertRow(-1);
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let lineNumberCell = row.insertCell(-1);
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lineNumberCell.classList.add("source-line-number");
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lineNumberCell.textContent = i + sourceView.firstLineNumber;
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let sampleCountCell = row.insertCell(-1);
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sampleCountCell.classList.add(heatBucket);
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sampleCountCell.textContent = sampleCount;
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let sourceLineCell = row.insertCell(-1);
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sourceLineCell.classList.add(heatBucket);
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sourceLineCell.textContent = sourceView.source[i];
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}
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$("timeline-currentCode").scrollIntoView();
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}
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}
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class SourceData {
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constructor(file) {
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this.scripts = new Map();
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for (let scriptBlock of file.scripts) {
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if (scriptBlock === null) continue; // Array may be sparse.
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let source = scriptBlock.source.split("\n");
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this.scripts.set(scriptBlock.name, source);
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}
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this.functions = new Map();
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for (let codeId = 0; codeId < file.code.length; ++codeId) {
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let codeBlock = file.code[codeId];
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if (codeBlock.source) {
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let data = this.functions.get(codeBlock.name);
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if (!data) {
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data = new FunctionSourceData(codeBlock.source.start,
|
||||
codeBlock.source.end);
|
||||
this.functions.set(codeBlock.name, data);
|
||||
}
|
||||
data.addSourceBlock(codeId, codeBlock.source);
|
||||
}
|
||||
}
|
||||
|
||||
for (let tick of file.ticks) {
|
||||
let stack = tick.s;
|
||||
for (let i = 0; i < stack.length; i += 2) {
|
||||
let codeId = stack[i];
|
||||
if (codeId < 0) continue;
|
||||
let name = file.code[codeId].name;
|
||||
if (this.functions.has(name)) {
|
||||
let codeOffset = stack[i + 1];
|
||||
this.functions.get(name).addOffsetSample(codeId, codeOffset);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
getScript(name) {
|
||||
let nameAndSource = name.split(" ")
|
||||
console.assert(nameAndSource.length >= 2);
|
||||
let sourceAndLine = nameAndSource[1].split(":");
|
||||
return this.scripts.get(sourceAndLine[0]);
|
||||
}
|
||||
|
||||
getLineForScriptOffset(name, scriptOffset) {
|
||||
let script = this.getScript(name);
|
||||
let line = 0;
|
||||
let charsConsumed = 0;
|
||||
for (; line < script.length; ++line) {
|
||||
charsConsumed += script[line].length + 1; // Add 1 for newline.
|
||||
if (charsConsumed > scriptOffset) break;
|
||||
}
|
||||
return line;
|
||||
}
|
||||
|
||||
hasSource(name) {
|
||||
return this.functions.has(name);
|
||||
}
|
||||
|
||||
generateSourceView(name) {
|
||||
console.assert(this.hasSource(name));
|
||||
let data = this.functions.get(name);
|
||||
let firstLineNumber =
|
||||
this.getLineForScriptOffset(name, data.startScriptOffset);
|
||||
let lastLineNumber =
|
||||
this.getLineForScriptOffset(name, data.endScriptOffset);
|
||||
let script = this.getScript(name);
|
||||
let lines = script.slice(firstLineNumber, lastLineNumber + 1);
|
||||
normalizeLeadingWhitespace(lines);
|
||||
|
||||
let samplesTotal = 0;
|
||||
let lineSampleCounts = [];
|
||||
for (let [codeId, block] of data.codes) {
|
||||
block.offsets.forEach((sampleCount, codeOffset) => {
|
||||
let sourceOffset = block.positionTable.getScriptOffset(codeOffset);
|
||||
let lineNumber =
|
||||
this.getLineForScriptOffset(name, sourceOffset) - firstLineNumber;
|
||||
samplesTotal += sampleCount;
|
||||
lineSampleCounts[lineNumber] =
|
||||
(lineSampleCounts[lineNumber] || 0) + sampleCount;
|
||||
});
|
||||
}
|
||||
|
||||
return {
|
||||
source: lines,
|
||||
lineSampleCounts: lineSampleCounts,
|
||||
samplesTotal: samplesTotal,
|
||||
firstLineNumber: firstLineNumber + 1 // Source code is 1-indexed.
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
class FunctionSourceData {
|
||||
constructor(startScriptOffset, endScriptOffset) {
|
||||
this.startScriptOffset = startScriptOffset;
|
||||
this.endScriptOffset = endScriptOffset;
|
||||
|
||||
this.codes = new Map();
|
||||
}
|
||||
|
||||
addSourceBlock(codeId, source) {
|
||||
this.codes.set(codeId, {
|
||||
positionTable: new SourcePositionTable(source.positions),
|
||||
offsets: []
|
||||
});
|
||||
}
|
||||
|
||||
addOffsetSample(codeId, codeOffset) {
|
||||
let codeIdOffsets = this.codes.get(codeId).offsets;
|
||||
codeIdOffsets[codeOffset] = (codeIdOffsets[codeOffset] || 0) + 1;
|
||||
}
|
||||
}
|
||||
|
||||
class SourcePositionTable {
|
||||
constructor(encodedTable) {
|
||||
this.offsetTable = [];
|
||||
let offsetPairRegex = /C([0-9]+)O([0-9]+)/g;
|
||||
while (true) {
|
||||
let regexResult = offsetPairRegex.exec(encodedTable);
|
||||
if (!regexResult) break;
|
||||
let codeOffset = parseInt(regexResult[1]);
|
||||
let scriptOffset = parseInt(regexResult[2]);
|
||||
if (isNaN(codeOffset) || isNaN(scriptOffset)) continue;
|
||||
this.offsetTable.push(codeOffset, scriptOffset);
|
||||
}
|
||||
}
|
||||
|
||||
getScriptOffset(codeOffset) {
|
||||
console.assert(codeOffset >= 0);
|
||||
for (let i = this.offsetTable.length - 2; i >= 0; i -= 2) {
|
||||
if (this.offsetTable[i] <= codeOffset) {
|
||||
return this.offsetTable[i + 1];
|
||||
}
|
||||
}
|
||||
return this.offsetTable[1];
|
||||
}
|
||||
}
|
||||
|
||||
class HelpView {
|
||||
constructor() {
|
||||
this.element = $("help");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user