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Bug 1394710 - Set process priority class on Windows r=aklotz

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Fairly straightforward. Using an idle priority class for
background, which mirrors what I am observing of Chromium in
Process Explorer.

MozReview-Commit-ID: 2mimYN7aJOy

--HG--
extra : rebase_source : 18d992209178fc1f08d281920976881159af8f19
This commit is contained in:
Doug Thayer 2018-06-08 14:54:11 -07:00
parent cf9a56e726
commit 869e854d3c
2 changed files with 49 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hal/moz.build
View File

@ -38,6 +38,7 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'android':
]
UNIFIED_SOURCES += [
'android/AndroidSensor.cpp',
'fallback/FallbackProcessPriority.cpp',
]
# AndroidHal.cpp cannot be built in unified mode because it relies on HalImpl.h.
SOURCES += [
@ -48,6 +49,7 @@ elif CONFIG['OS_TARGET'] == 'Linux':
'fallback/FallbackScreenConfiguration.cpp',
'fallback/FallbackSensor.cpp',
'fallback/FallbackVibration.cpp',
'fallback/FallbackProcessPriority.cpp',
]
if CONFIG['MOZ_ENABLE_DBUS']:
UNIFIED_SOURCES += [
@ -61,6 +63,7 @@ elif CONFIG['OS_TARGET'] == 'WINNT':
UNIFIED_SOURCES += [
'fallback/FallbackScreenConfiguration.cpp',
'fallback/FallbackVibration.cpp',
'windows/WindowsProcessPriority.cpp',
'windows/WindowsSensor.cpp',
]
# WindowsBattery.cpp cannot be built in unified mode because it relies on HalImpl.h.
@ -72,12 +75,14 @@ elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
'cocoa/CocoaBattery.cpp',
'fallback/FallbackScreenConfiguration.cpp',
'fallback/FallbackVibration.cpp',
'fallback/FallbackProcessPriority.cpp',
]
elif CONFIG['OS_TARGET'] in ('OpenBSD', 'NetBSD', 'FreeBSD', 'DragonFly'):
UNIFIED_SOURCES += [
'fallback/FallbackScreenConfiguration.cpp',
'fallback/FallbackSensor.cpp',
'fallback/FallbackVibration.cpp',
'fallback/FallbackProcessPriority.cpp',
]
if CONFIG['MOZ_ENABLE_DBUS']:
UNIFIED_SOURCES += [
@ -93,12 +98,12 @@ else:
'fallback/FallbackScreenConfiguration.cpp',
'fallback/FallbackSensor.cpp',
'fallback/FallbackVibration.cpp',
'fallback/FallbackProcessPriority.cpp',
]
# Fallbacks for backends no longer implemented.
UNIFIED_SOURCES += [
'fallback/FallbackDiskSpaceWatcher.cpp',
'fallback/FallbackProcessPriority.cpp',
]
# Fallbacks for backends implemented on Android only.

43
hal/windows/WindowsProcessPriority.cpp Normal file
View File

@ -0,0 +1,43 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Hal.h"
#include "HalLog.h"
#include <Windows.h>
using namespace mozilla::hal;
namespace mozilla {
namespace hal_impl {
bool
SetProcessPrioritySupported()
{
return true;
}
void
SetProcessPriority(int aPid, ProcessPriority aPriority)
{
HAL_LOG("WindowsProcessPriority - SetProcessPriority(%d, %s)\n",
aPid, ProcessPriorityToString(aPriority));
HANDLE hProcess = ::OpenProcess(PROCESS_SET_INFORMATION, false, aPid);
if (hProcess) {
DWORD priority = NORMAL_PRIORITY_CLASS;
if (aPriority == PROCESS_PRIORITY_BACKGROUND ||
aPriority == PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE) {
priority = IDLE_PRIORITY_CLASS;
}
::SetPriorityClass(hProcess, priority);
::CloseHandle(hProcess);
}
HAL_LOG("WindowsProcessPriority - priority set to %d for pid %d\n",
aPriority, aPid);
}
} // namespace hal_impl
} // namespace mozilla