Commit c1562ec2 authored by Florian Queze's avatar Florian Queze
Browse files

Bug 1800412 - Add a preference to control whether the EcoQoS is used for... 

Bug 1800412 - Add a preference to control whether the EcoQoS is used for background content processes, r=gsvelto, a=dsmith

Differential Revision: https://phabricator.services.mozilla.com/D161975
parent e5c684b3

browser/app/profile/firefox.js

+4 −0
Original line number Diff line number Diff line
@@ -2076,6 +2076,10 @@ pref("extensions.experiments.enabled", false); 
  pref("dom.ipc.processPriorityManager.enabled", true);

#endif



#if defined(XP_WIN)

  pref("dom.ipc.processPriorityManager.backgroundUsesEcoQoS", true);

#endif



// Don't limit how many nodes we care about on desktop:

pref("reader.parse-node-limit", 0);

hal/windows/WindowsProcessPriority.cpp

+12 −3
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include "Hal.h"

#include "HalLog.h"

#include "nsWindowsHelpers.h"  // for nsAutoHandle and nsModuleHandle

#include "mozilla/StaticPrefs_dom.h"



#include <windows.h>
@@ -42,6 +43,11 @@ void SetProcessPriority(int aPid, ProcessPriority aPriority) { 
    static bool alreadyInitialized = false;

    static decltype(::SetProcessInformation)* setProcessInformation = nullptr;

    if (!alreadyInitialized) {

      if (aPriority == PROCESS_PRIORITY_PARENT_PROCESS ||

          !StaticPrefs::dom_ipc_processPriorityManager_backgroundUsesEcoQoS()) {

        return;

      }



      alreadyInitialized = true;

      // SetProcessInformation only exists on Windows 8 and later.

      nsModuleHandle module(LoadLibrary(L"Kernel32.dll"));
@@ -59,7 +65,10 @@ void SetProcessPriority(int aPid, ProcessPriority aPriority) { 
    RtlZeroMemory(&PowerThrottling, sizeof(PowerThrottling));

    PowerThrottling.Version = PROCESS_POWER_THROTTLING_CURRENT_VERSION;

    PowerThrottling.ControlMask = PROCESS_POWER_THROTTLING_EXECUTION_SPEED;

    PowerThrottling.StateMask = aPriority == PROCESS_PRIORITY_BACKGROUND

    PowerThrottling.StateMask =

        (aPriority == PROCESS_PRIORITY_BACKGROUND) &&

                StaticPrefs::

                    dom_ipc_processPriorityManager_backgroundUsesEcoQoS()

            ? PROCESS_POWER_THROTTLING_EXECUTION_SPEED

            : 0;

    if (setProcessInformation(processHandle, ProcessPowerThrottling,

modules/libpref/init/StaticPrefList.yaml

+7 −0
Original line number Diff line number Diff line
@@ -2863,6 +2863,13 @@ 
#endif

  mirror: always



#ifdef XP_WIN

- name: dom.ipc.processPriorityManager.backgroundUsesEcoQoS

  type: bool

  value: false

  mirror: always

#endif



# Is support for HTMLElement.autocapitalize enabled?

- name: dom.forms.autocapitalize

  type: bool