Index: chrome/browser/private_working_set_snapshot.h |
diff --git a/chrome/browser/private_working_set_snapshot.h b/chrome/browser/private_working_set_snapshot.h |
deleted file mode 100644 |
index d4286b14c0a5ee09905de0990673ccf7b3d5780e..0000000000000000000000000000000000000000 |
--- a/chrome/browser/private_working_set_snapshot.h |
+++ /dev/null |
@@ -1,122 +0,0 @@ |
-// Copyright 2015 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. |
- |
-#ifndef CHROME_BROWSER_PRIVATE_WORKING_SET_SNAPSHOT_H_ |
-#define CHROME_BROWSER_PRIVATE_WORKING_SET_SNAPSHOT_H_ |
- |
-#include "build/build_config.h" |
- |
-#if defined(OS_WIN) |
-#include <pdh.h> |
-#include <stddef.h> |
- |
-#include <vector> |
- |
-#include "base/macros.h" |
-#include "base/process/process_handle.h" |
-#include "base/win/scoped_handle.h" |
- |
-namespace win { |
- |
-// The traits class for PDH handles that can be closed via PdhCloseQuery() API. |
-struct PDHHandleTraits { |
- typedef PDH_HQUERY Handle; |
- static PDH_HQUERY NullHandle() { return nullptr; } |
- static bool IsHandleValid(PDH_HQUERY handle) { return handle != nullptr; } |
- static bool CloseHandle(PDH_HQUERY handle) { |
- return (PdhCloseQuery(handle) == ERROR_SUCCESS); |
- } |
- |
- private: |
- DISALLOW_IMPLICIT_CONSTRUCTORS(PDHHandleTraits); |
-}; |
- |
-// DummyVerifierTraits can be used because PDH_HQUERY is just a typedef for |
-// HANDLE. However HandleTraits cannot be used because PdhCloseQuery must be |
-// called rather than CloseHandle to dispose of the resources. |
-using ScopedPDH = |
- base::win::GenericScopedHandle<PDHHandleTraits, |
- base::win::DummyVerifierTraits>; |
- |
-} // namespace win |
- |
-// This class can be used to do bulk collection of private working sets. This |
-// exists because on Windows it is much faster to collect a group of private |
-// working sets all at once using PdhOpenQuery than to calculate the private |
-// working sets for each process individually. |
-class PrivateWorkingSetSnapshot { |
- public: |
- PrivateWorkingSetSnapshot(); |
- ~PrivateWorkingSetSnapshot(); |
- |
- // Add a process name that this object should monitor, such as "chrome". All |
- // processes whose name starts with this string will be monitored. |
- void AddToMonitorList(const std::string& process_name); |
- |
- // Query the system for working-set information for all monitored processes |
- // and update the results cache. This function may take a few ms to run. |
- // The time it takes seems to be independent of the number of processes it |
- // retrieves data for. This makes it faster than using QueryWorkingSet as soon |
- // as the process count exceeds two or three. |
- void Sample(); |
- |
- // Ask for the working set for a specific process, from the most recent call |
- // to Sample. If no data is available then zero will be returned. The result |
- // is in bytes. |
- size_t GetPrivateWorkingSet(base::ProcessId process_id) const; |
- |
- private: |
- // Initialize the PDH |query_handle_| and process any pending AddToMonitorList |
- // calls. |
- void Initialize(); |
- |
- // This holds a pair of Pdh counters to queries for the process ID and private |
- // working set for a particular process name being monitored. The results from |
- // the two queries can be matched up so that we can associate a private |
- // working set with a process ID. |
- struct PdhCounterPair { |
- // These are bound to query_handle_ and will be freed when it is closed. |
- // The handle to the 'counter' that retrieves process IDs. |
- PDH_HCOUNTER process_id_handle = nullptr; |
- // The handle to the 'counter' that retrieves private working sets. |
- PDH_HCOUNTER private_ws_handle = nullptr; |
- }; |
- |
- // Struct for storing a process ID and associated private working set. |
- struct PidAndPrivateWorkingSet { |
- base::ProcessId process_id; |
- size_t private_ws; |
- // Comparison function for sorting by process ID. |
- bool operator<(const PidAndPrivateWorkingSet& other) const { |
- // private_ws is intentionally *not* part of the comparison because it is |
- // the payload and process_id is the key. |
- return process_id < other.process_id; |
- } |
- // Comparison function for searching by process ID. |
- bool operator<(const base::ProcessId other_process_id) const { |
- return process_id < other_process_id; |
- } |
- }; |
- |
- // True if Initialize() has been called, whether it succeeded or not. |
- bool initialized_ = false; |
- |
- // The handle to the query object. |
- win::ScopedPDH query_handle_; |
- |
- // A vector of process names to monitor when initialization occurs. |
- std::vector<std::string> process_names_; |
- |
- // A PdhCounterPair for each successful AddToMonitorList call. |
- std::vector<PdhCounterPair> counter_pairs_; |
- |
- // After each call to Sample this will hold the results, sorted by process id. |
- std::vector<PidAndPrivateWorkingSet> records_; |
- |
- DISALLOW_COPY_AND_ASSIGN(PrivateWorkingSetSnapshot); |
-}; |
- |
-#endif // defined(OS_WIN) |
- |
-#endif // CHROME_BROWSER_PRIVATE_WORKING_SET_SNAPSHOT_H_ |