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authorSteve Block <steveblock@google.com>2009-10-30 11:49:59 +0000
committerSteve Block <steveblock@google.com>2009-10-30 19:03:37 +0000
commit20bb23f8cbd4643c5da24601959b015e98374b44 (patch)
tree743b40f3f7b5b7a4ad2b32906dcea772730a0792 /V8Binding/v8/tools/logreader.js
parent84191aa5bc11de486d662f98d4d618b179ca45ca (diff)
downloadexternal_webkit-20bb23f8cbd4643c5da24601959b015e98374b44.zip
external_webkit-20bb23f8cbd4643c5da24601959b015e98374b44.tar.gz
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Move V8 to external/v8
Change-Id: I9ef85bb1a4fd0e808ca37ac532803542b6dfb04d
Diffstat (limited to 'V8Binding/v8/tools/logreader.js')
-rw-r--r--V8Binding/v8/tools/logreader.js320
1 files changed, 0 insertions, 320 deletions
diff --git a/V8Binding/v8/tools/logreader.js b/V8Binding/v8/tools/logreader.js
deleted file mode 100644
index 88ab907..0000000
--- a/V8Binding/v8/tools/logreader.js
+++ /dev/null
@@ -1,320 +0,0 @@
-// 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.
-
-/**
- * @fileoverview Log Reader is used to process log file produced by V8.
- */
-
-// Initlialize namespaces
-var devtools = devtools || {};
-devtools.profiler = devtools.profiler || {};
-
-
-/**
- * Base class for processing log files.
- *
- * @param {Array.<Object>} dispatchTable A table used for parsing and processing
- * log records.
- * @constructor
- */
-devtools.profiler.LogReader = function(dispatchTable) {
- /**
- * @type {Array.<Object>}
- */
- this.dispatchTable_ = dispatchTable;
- this.dispatchTable_['alias'] =
- { parsers: [null, null], processor: this.processAlias_ };
- this.dispatchTable_['repeat'] =
- { parsers: [parseInt, 'var-args'], processor: this.processRepeat_,
- backrefs: true };
-
- /**
- * A key-value map for aliases. Translates short name -> full name.
- * @type {Object}
- */
- this.aliases_ = {};
-
- /**
- * A key-value map for previous address values.
- * @type {Object}
- */
- this.prevAddresses_ = {};
-
- /**
- * A key-value map for events than can be backreference-compressed.
- * @type {Object}
- */
- this.backRefsCommands_ = {};
- this.initBackRefsCommands_();
-
- /**
- * Back references for decompression.
- * @type {Array.<string>}
- */
- this.backRefs_ = [];
-};
-
-
-/**
- * Creates a parser for an address entry.
- *
- * @param {string} addressTag Address tag to perform offset decoding.
- * @return {function(string):number} Address parser.
- */
-devtools.profiler.LogReader.prototype.createAddressParser = function(
- addressTag) {
- var self = this;
- return (function (str) {
- var value = parseInt(str, 16);
- var firstChar = str.charAt(0);
- if (firstChar == '+' || firstChar == '-') {
- var addr = self.prevAddresses_[addressTag];
- addr += value;
- self.prevAddresses_[addressTag] = addr;
- return addr;
- } else if (firstChar != '0' || str.charAt(1) != 'x') {
- self.prevAddresses_[addressTag] = value;
- }
- return value;
- });
-};
-
-
-/**
- * Expands an alias symbol, if applicable.
- *
- * @param {string} symbol Symbol to expand.
- * @return {string} Expanded symbol, or the input symbol itself.
- */
-devtools.profiler.LogReader.prototype.expandAlias = function(symbol) {
- return symbol in this.aliases_ ? this.aliases_[symbol] : symbol;
-};
-
-
-/**
- * Used for printing error messages.
- *
- * @param {string} str Error message.
- */
-devtools.profiler.LogReader.prototype.printError = function(str) {
- // Do nothing.
-};
-
-
-/**
- * Processes a portion of V8 profiler event log.
- *
- * @param {string} chunk A portion of log.
- */
-devtools.profiler.LogReader.prototype.processLogChunk = function(chunk) {
- this.processLog_(chunk.split('\n'));
-};
-
-
-/**
- * Processes stack record.
- *
- * @param {number} pc Program counter.
- * @param {Array.<string>} stack String representation of a stack.
- * @return {Array.<number>} Processed stack.
- */
-devtools.profiler.LogReader.prototype.processStack = function(pc, stack) {
- var fullStack = [pc];
- var prevFrame = pc;
- for (var i = 0, n = stack.length; i < n; ++i) {
- var frame = stack[i];
- var firstChar = frame.charAt(0);
- if (firstChar == '+' || firstChar == '-') {
- // An offset from the previous frame.
- prevFrame += parseInt(frame, 16);
- fullStack.push(prevFrame);
- // Filter out possible 'overflow' string.
- } else if (firstChar != 'o') {
- fullStack.push(parseInt(frame, 16));
- }
- }
- return fullStack;
-};
-
-
-/**
- * Returns whether a particular dispatch must be skipped.
- *
- * @param {!Object} dispatch Dispatch record.
- * @return {boolean} True if dispatch must be skipped.
- */
-devtools.profiler.LogReader.prototype.skipDispatch = function(dispatch) {
- return false;
-};
-
-
-/**
- * Does a dispatch of a log record.
- *
- * @param {Array.<string>} fields Log record.
- * @private
- */
-devtools.profiler.LogReader.prototype.dispatchLogRow_ = function(fields) {
- // Obtain the dispatch.
- var command = fields[0];
- if (!(command in this.dispatchTable_)) {
- throw new Error('unknown command: ' + command);
- }
- var dispatch = this.dispatchTable_[command];
-
- if (dispatch === null || this.skipDispatch(dispatch)) {
- return;
- }
-
- // Parse fields.
- var parsedFields = [];
- for (var i = 0; i < dispatch.parsers.length; ++i) {
- var parser = dispatch.parsers[i];
- if (parser === null) {
- parsedFields.push(fields[1 + i]);
- } else if (typeof parser == 'function') {
- parsedFields.push(parser(fields[1 + i]));
- } else {
- // var-args
- parsedFields.push(fields.slice(1 + i));
- break;
- }
- }
-
- // Run the processor.
- dispatch.processor.apply(this, parsedFields);
-};
-
-
-/**
- * Decompresses a line if it was backreference-compressed.
- *
- * @param {string} line Possibly compressed line.
- * @return {string} Decompressed line.
- * @private
- */
-devtools.profiler.LogReader.prototype.expandBackRef_ = function(line) {
- var backRefPos;
- // Filter out case when a regexp is created containing '#'.
- if (line.charAt(line.length - 1) != '"'
- && (backRefPos = line.lastIndexOf('#')) != -1) {
- var backRef = line.substr(backRefPos + 1);
- var backRefIdx = parseInt(backRef, 10) - 1;
- var colonPos = backRef.indexOf(':');
- var backRefStart =
- colonPos != -1 ? parseInt(backRef.substr(colonPos + 1), 10) : 0;
- line = line.substr(0, backRefPos) +
- this.backRefs_[backRefIdx].substr(backRefStart);
- }
- this.backRefs_.unshift(line);
- if (this.backRefs_.length > 10) {
- this.backRefs_.length = 10;
- }
- return line;
-};
-
-
-/**
- * Initializes the map of backward reference compressible commands.
- * @private
- */
-devtools.profiler.LogReader.prototype.initBackRefsCommands_ = function() {
- for (var event in this.dispatchTable_) {
- var dispatch = this.dispatchTable_[event];
- if (dispatch && dispatch.backrefs) {
- this.backRefsCommands_[event] = true;
- }
- }
-};
-
-
-/**
- * Processes alias log record. Adds an alias to a corresponding map.
- *
- * @param {string} symbol Short name.
- * @param {string} expansion Long name.
- * @private
- */
-devtools.profiler.LogReader.prototype.processAlias_ = function(
- symbol, expansion) {
- if (expansion in this.dispatchTable_) {
- this.dispatchTable_[symbol] = this.dispatchTable_[expansion];
- if (expansion in this.backRefsCommands_) {
- this.backRefsCommands_[symbol] = true;
- }
- } else {
- this.aliases_[symbol] = expansion;
- }
-};
-
-
-/**
- * Processes log lines.
- *
- * @param {Array.<string>} lines Log lines.
- * @private
- */
-devtools.profiler.LogReader.prototype.processLog_ = function(lines) {
- var csvParser = new devtools.profiler.CsvParser();
- try {
- for (var i = 0, n = lines.length; i < n; ++i) {
- var line = lines[i];
- if (!line) {
- continue;
- }
- if (line.charAt(0) == '#' ||
- line.substr(0, line.indexOf(',')) in this.backRefsCommands_) {
- line = this.expandBackRef_(line);
- }
- var fields = csvParser.parseLine(line);
- this.dispatchLogRow_(fields);
- }
- } catch (e) {
- // An error on the last line is acceptable since log file can be truncated.
- if (i < n - 1) {
- this.printError('line ' + (i + 1) + ': ' + (e.message || e));
- throw e;
- }
- }
-};
-
-
-/**
- * Processes repeat log record. Expands it according to calls count and
- * invokes processing.
- *
- * @param {number} count Count.
- * @param {Array.<string>} cmd Parsed command.
- * @private
- */
-devtools.profiler.LogReader.prototype.processRepeat_ = function(count, cmd) {
- // Replace the repeat-prefixed command from backrefs list with a non-prefixed.
- this.backRefs_[0] = cmd.join(',');
- for (var i = 0; i < count; ++i) {
- this.dispatchLogRow_(cmd);
- }
-};