diff options
Diffstat (limited to 'chromium/tools/stats_viewer/stats_table.cs')
| -rw-r--r-- | chromium/tools/stats_viewer/stats_table.cs | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/chromium/tools/stats_viewer/stats_table.cs b/chromium/tools/stats_viewer/stats_table.cs deleted file mode 100644 index e5d0894e37c..00000000000 --- a/chromium/tools/stats_viewer/stats_table.cs +++ /dev/null @@ -1,546 +0,0 @@ -// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-using System.Text;
-
-namespace StatsViewer
-{
- /// <summary>
- /// The stats table shared memory segment contains this
- /// header structure.
- /// </summary>
- [StructLayout(LayoutKind.Sequential)]
- internal struct StatsFileHeader {
- public int version;
- public int size;
- public int max_counters;
- public int max_threads;
- };
-
- /// <summary>
- /// An entry in the StatsTable.
- /// </summary>
- class StatsTableEntry {
- public StatsTableEntry(int id, string name, StatsTable table) {
- id_ = id;
- name_ = name;
- table_ = table;
- }
-
- /// <summary>
- /// The unique id for this entry
- /// </summary>
- public int id { get { return id_; } }
-
- /// <summary>
- /// The name for this entry.
- /// </summary>
- public string name { get { return name_; } }
-
- /// <summary>
- /// The value of this entry now.
- /// </summary>
- public int GetValue(int filter_pid) {
- return table_.GetValue(id_, filter_pid);
- }
-
- private int id_;
- private string name_;
- private StatsTable table_;
- }
-
- // An interface for StatsCounters
- interface IStatsCounter {
- // The name of the counter
- string name { get; }
- }
-
- // A counter.
- class StatsCounter : IStatsCounter {
- public StatsCounter(StatsTableEntry entry) {
- entry_ = entry;
- }
-
- public string name {
- get {
- return entry_.name;
- }
- }
-
- public int GetValue(int filter_pid) {
- return entry_.GetValue(filter_pid);
- }
-
- private StatsTableEntry entry_;
- }
-
- // A timer.
- class StatsTimer : IStatsCounter {
- public StatsTimer(StatsTableEntry entry)
- {
- entry_ = entry;
- }
-
- public string name {
- get {
- return entry_.name;
- }
- }
-
- public int GetValue(int filter_pid) {
- return entry_.GetValue(filter_pid);
- }
-
- private StatsTableEntry entry_;
- }
-
- // A rate.
- class StatsCounterRate : IStatsCounter
- {
- public StatsCounterRate(StatsCounter counter, StatsTimer timer) {
- counter_ = counter;
- timer_ = timer;
- }
-
- public string name { get { return counter_.name; } }
-
- public int GetCount(int filter_pid) {
- return counter_.GetValue(filter_pid);
- }
-
- public int GetTime(int filter_pid) {
- return timer_.GetValue(filter_pid);
- }
-
- private StatsCounter counter_;
- private StatsTimer timer_;
- }
-
- /// <summary>
- /// This is a C# reader for the chrome stats_table.
- /// </summary>
- class StatsTable {
- internal const int kMaxThreadNameLength = 32;
- internal const int kMaxCounterNameLength = 32;
-
- /// <summary>
- /// Open a StatsTable
- /// </summary>
- public StatsTable() {
- }
-
- #region Public Properties
- /// <summary>
- /// Get access to the counters in the table.
- /// </summary>
- public StatsTableCounters Counters() {
- return new StatsTableCounters(this);
- }
-
- /// <summary>
- /// Get access to the processes in the table
- /// </summary>
- public ICollection Processes {
- get {
- return new StatsTableProcesses(this);
- }
- }
- #endregion
-
- #region Internal Properties
- //
- // The internal methods are accessible to the enumerators
- // and helper classes below.
- //
-
- /// <summary>
- /// Access to the table header
- /// </summary>
- internal StatsFileHeader Header {
- get { return header_; }
- }
-
- /// <summary>
- /// Get the offset of the ThreadName table
- /// </summary>
- internal long ThreadNamesOffset {
- get {
- return memory_.ToInt64() + Marshal.SizeOf(typeof(StatsFileHeader));
- }
- }
-
- /// <summary>
- /// Get the offset of the PIDs table
- /// </summary>
- internal long PidsOffset {
- get {
- long offset = ThreadNamesOffset;
- // Thread names table
- offset += AlignedSize(header_.max_threads * kMaxThreadNameLength * 2);
- // Thread TID table
- offset += AlignedSize(header_.max_threads *
- Marshal.SizeOf(typeof(int)));
- return offset;
- }
- }
-
- /// <summary>
- /// Get the offset of the CounterName table
- /// </summary>
- internal long CounterNamesOffset {
- get {
- long offset = PidsOffset;
- // Thread PID table
- offset += AlignedSize(header_.max_threads *
- Marshal.SizeOf(typeof(int)));
- return offset;
- }
- }
-
- /// <summary>
- /// Get the offset of the Data table
- /// </summary>
- internal long DataOffset {
- get {
- long offset = CounterNamesOffset;
- // Counter names table
- offset += AlignedSize(header_.max_counters *
- kMaxCounterNameLength * 2);
- return offset;
- }
- }
- #endregion
-
- #region Public Methods
- /// <summary>
- /// Opens the memory map
- /// </summary>
- /// <returns></returns>
- /// <param name="name">The name of the file to open</param>
- public bool Open(string name) {
- map_handle_ =
- Win32.OpenFileMapping((int)Win32.MapAccess.FILE_MAP_WRITE, false,
- name);
- if (map_handle_ == IntPtr.Zero)
- return false;
-
- memory_ =
- Win32.MapViewOfFile(map_handle_, (int)Win32.MapAccess.FILE_MAP_WRITE,
- 0,0, 0);
- if (memory_ == IntPtr.Zero) {
- Win32.CloseHandle(map_handle_);
- return false;
- }
-
- header_ = (StatsFileHeader)Marshal.PtrToStructure(memory_, header_.GetType());
- return true;
- }
-
- /// <summary>
- /// Close the mapped file.
- /// </summary>
- public void Close() {
- Win32.UnmapViewOfFile(memory_);
- Win32.CloseHandle(map_handle_);
- }
-
- /// <summary>
- /// Zero out the stats file.
- /// </summary>
- public void Zero() {
- long offset = DataOffset;
- for (int threads = 0; threads < header_.max_threads; threads++) {
- for (int counters = 0; counters < header_.max_counters; counters++) {
- Marshal.WriteInt32((IntPtr) offset, 0);
- offset += Marshal.SizeOf(typeof(int));
- }
- }
- }
-
- /// <summary>
- /// Get the value for a StatsCounterEntry now.
- /// </summary>
- /// <returns></returns>
- /// <param name="filter_pid">If a specific PID is being queried, filter to this PID. 0 means use all data.</param>
- /// <param name="id">The id of the CounterEntry to get the value for.</param>
- public int GetValue(int id, int filter_pid) {
- long pid_offset = PidsOffset;
- long data_offset = DataOffset;
- data_offset += id * (Header.max_threads *
- Marshal.SizeOf(typeof(int)));
- int rv = 0;
- for (int cols = 0; cols < Header.max_threads; cols++)
- {
- int pid = Marshal.ReadInt32((IntPtr)pid_offset);
- if (filter_pid == 0 || filter_pid == pid)
- {
- rv += Marshal.ReadInt32((IntPtr)data_offset);
- }
- data_offset += Marshal.SizeOf(typeof(int));
- pid_offset += Marshal.SizeOf(typeof(int));
- }
- return rv;
- }
- #endregion
-
- #region Private Methods
- /// <summary>
- /// Align to 4-byte boundaries
- /// </summary>
- /// <param name="size"></param>
- /// <returns></returns>
- private long AlignedSize(long size) {
- Debug.Assert(sizeof(int) == 4);
- return size + (sizeof(int) - (size % sizeof(int))) % sizeof(int);
- }
- #endregion
-
- #region Private Members
- private IntPtr memory_;
- private IntPtr map_handle_;
- private StatsFileHeader header_;
- #endregion
- }
-
- /// <summary>
- /// Enumerable list of Counters in the StatsTable
- /// </summary>
- class StatsTableCounters : ICollection {
- /// <summary>
- /// Create the list of counters
- /// </summary>
- /// <param name="table"></param>
- /// pid</param>
- public StatsTableCounters(StatsTable table) {
- table_ = table;
- counter_hi_water_mark_ = -1;
- counters_ = new List<IStatsCounter>();
- FindCounters();
- }
-
- /// <summary>
- /// Scans the table for new entries.
- /// </summary>
- public void Update() {
- FindCounters();
- }
-
- #region IEnumerable Members
- public IEnumerator GetEnumerator() {
- return counters_.GetEnumerator();
- }
- #endregion
-
- #region ICollection Members
- public void CopyTo(Array array, int index) {
- throw new Exception("The method or operation is not implemented.");
- }
-
- public int Count {
- get {
- return counters_.Count;
- }
- }
-
- public bool IsSynchronized {
- get {
- throw new Exception("The method or operation is not implemented.");
- }
- }
-
- public object SyncRoot {
- get {
- throw new Exception("The method or operation is not implemented.");
- }
- }
- #endregion
-
- #region Private Methods
- /// <summary>
- /// Create a counter based on an entry
- /// </summary>
- /// <param name="id"></param>
- /// <param name="name"></param>
- /// <returns></returns>
- private IStatsCounter NameToCounter(int id, string name)
- {
- IStatsCounter rv = null;
-
- // check if the name has a type encoded
- if (name.Length > 2 && name[1] == ':')
- {
- StatsTableEntry entry = new StatsTableEntry(id, name.Substring(2), table_);
- switch (name[0])
- {
- case 't':
- rv = new StatsTimer(entry);
- break;
- case 'c':
- rv = new StatsCounter(entry);
- break;
- }
- }
- else
- {
- StatsTableEntry entry = new StatsTableEntry(id, name, table_);
- rv = new StatsCounter(entry);
- }
-
- return rv;
- }
-
- // If we have two StatsTableEntries with the same name,
- // attempt to upgrade them to a higher level type.
- // Example: A counter + a timer == a rate!
- private void UpgradeCounter(IStatsCounter old_counter, IStatsCounter counter)
- {
- if (old_counter is StatsCounter && counter is StatsTimer)
- {
- StatsCounterRate rate = new StatsCounterRate(old_counter as StatsCounter,
- counter as StatsTimer);
- counters_.Remove(old_counter);
- counters_.Add(rate);
- }
- else if (old_counter is StatsTimer && counter is StatsCounter)
- {
- StatsCounterRate rate = new StatsCounterRate(counter as StatsCounter,
- old_counter as StatsTimer);
- counters_.Remove(old_counter);
- counters_.Add(rate);
- }
- }
-
- /// <summary>
- /// Find the counters in the table and insert into the counters_
- /// hash table.
- /// </summary>
- private void FindCounters()
- {
- Debug.Assert(table_.Header.max_counters > 0);
-
- int index = counter_hi_water_mark_;
-
- do
- {
- // Find an entry in the table.
- index++;
- long offset = table_.CounterNamesOffset +
- (index * StatsTable.kMaxCounterNameLength * 2);
- string name = Marshal.PtrToStringUni((IntPtr)offset);
- if (name.Length == 0)
- continue;
-
- // Record that we've already looked at this StatsTableEntry.
- counter_hi_water_mark_ = index;
-
- IStatsCounter counter = NameToCounter(index, name);
-
- if (counter != null)
- {
- IStatsCounter old_counter = FindExistingCounter(counter.name);
- if (old_counter != null)
- UpgradeCounter(old_counter, counter);
- else
- counters_.Add(counter);
- }
- } while (index < table_.Header.max_counters - 1);
- }
-
- /// <summary>
- /// Find an existing counter in our table
- /// </summary>
- /// <param name="name"></param>
- private IStatsCounter FindExistingCounter(string name) {
- foreach (IStatsCounter ctr in counters_)
- {
- if (ctr.name == name)
- return ctr;
- }
- return null;
- }
- #endregion
-
- #region Private Members
- private StatsTable table_;
- private List<IStatsCounter> counters_;
- // Highest index of counters processed.
- private int counter_hi_water_mark_;
- #endregion
- }
-
- /// <summary>
- /// A collection of processes
- /// </summary>
- class StatsTableProcesses : ICollection
- {
- /// <summary>
- /// Constructor
- /// </summary>
- /// <param name="table"></param>
- public StatsTableProcesses(StatsTable table) {
- table_ = table;
- pids_ = new List<int>();
- Initialize();
- }
-
- #region ICollection Members
- public void CopyTo(Array array, int index) {
- throw new Exception("The method or operation is not implemented.");
- }
-
- public int Count {
- get {
- return pids_.Count;
- }
- }
-
- public bool IsSynchronized {
- get {
- throw new Exception("The method or operation is not implemented.");
- }
- }
-
- public object SyncRoot {
- get {
- throw new Exception("The method or operation is not implemented.");
- }
- }
- #endregion
-
- #region IEnumerable Members
- public IEnumerator GetEnumerator() {
- return pids_.GetEnumerator();
- }
- #endregion
-
- /// <summary>
- /// Initialize the pid list.
- /// </summary>
- private void Initialize() {
- long offset = table_.ThreadNamesOffset;
-
- for (int index = 0; index < table_.Header.max_threads; index++) {
- string thread_name = Marshal.PtrToStringUni((IntPtr)offset);
- if (thread_name.Length > 0) {
- long pidOffset = table_.PidsOffset + index *
- Marshal.SizeOf(typeof(int));
- int pid = Marshal.ReadInt32((IntPtr)pidOffset);
- if (!pids_.Contains(pid))
- pids_.Add(pid);
- }
- offset += StatsTable.kMaxThreadNameLength * 2;
- }
- }
-
- #region Private Members
- private StatsTable table_;
- private List<int> pids_;
- #endregion
- }
-}
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