forked from mirrors/gecko-dev
9c9c36a9fa
As far as I can see, all this does is protect the user from running some useless code if they manually enable the priority manager using a pref on an OS that doesn't support it. The upside of allowing this is that it makes it possible to debug the priority manager on OSX and Linux with just a pref flip. Differential Revision: https://phabricator.services.mozilla.com/D114767
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Hal.h"
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#include "HalLog.h"
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#include <windows.h>
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using namespace mozilla::hal;
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namespace mozilla {
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namespace hal_impl {
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void SetProcessPriority(int aPid, ProcessPriority aPriority) {
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HAL_LOG("WindowsProcessPriority - SetProcessPriority(%d, %s)\n", aPid,
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ProcessPriorityToString(aPriority));
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nsAutoHandle processHandle(
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::OpenProcess(PROCESS_SET_INFORMATION, FALSE, aPid));
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if (processHandle) {
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DWORD priority = NORMAL_PRIORITY_CLASS;
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if (aPriority == PROCESS_PRIORITY_BACKGROUND) {
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priority = IDLE_PRIORITY_CLASS;
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} else if (aPriority == PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE) {
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priority = BELOW_NORMAL_PRIORITY_CLASS;
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}
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if (::SetPriorityClass(processHandle, priority)) {
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HAL_LOG("WindowsProcessPriority - priority set to %d for pid %d\n",
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aPriority, aPid);
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}
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}
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}
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} // namespace hal_impl
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} // namespace mozilla
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