зеркало из https://github.com/mozilla/gecko-dev.git
61 строка
2.2 KiB
C++
61 строка
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 https://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "Hal.h"
|
|
|
|
#include "GeneratedJNIWrappers.h"
|
|
|
|
/**
|
|
* Bucket the Gecko HAL process priority level into one of the three Android
|
|
* priority levels.
|
|
*/
|
|
static mozilla::java::ServiceAllocator::PriorityLevel::LocalRef
|
|
ToJavaPriorityLevel(const ProcessPriority aPriority) {
|
|
if (aPriority >= PROCESS_PRIORITY_FOREGROUND) {
|
|
return mozilla::java::ServiceAllocator::PriorityLevel::FOREGROUND();
|
|
} else if (aPriority <= PROCESS_PRIORITY_PREALLOC &&
|
|
aPriority >= PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE) {
|
|
return mozilla::java::ServiceAllocator::PriorityLevel::BACKGROUND();
|
|
}
|
|
|
|
return mozilla::java::ServiceAllocator::PriorityLevel::IDLE();
|
|
}
|
|
|
|
namespace mozilla {
|
|
namespace hal_impl {
|
|
|
|
bool SetProcessPrioritySupported() { return true; }
|
|
|
|
void SetProcessPriority(int aPid, ProcessPriority aPriority) {
|
|
if (aPriority == PROCESS_PRIORITY_MASTER) {
|
|
// This is the parent process itself, which we do not control.
|
|
return;
|
|
}
|
|
|
|
const int32_t intPriority = static_cast<int32_t>(aPriority);
|
|
if (intPriority < 0 || intPriority >= NUM_PROCESS_PRIORITY) {
|
|
return;
|
|
}
|
|
|
|
auto contentProcType = java::GeckoProcessType::CONTENT();
|
|
auto selector =
|
|
java::GeckoProcessManager::Selector::New(contentProcType, aPid);
|
|
auto priorityLevel = ToJavaPriorityLevel(aPriority);
|
|
|
|
// To Android, a lower-valued integer is a higher relative priority.
|
|
// We take the integer value of the enum and subtract it from the value
|
|
// of the highest Gecko priority level to obtain a 0-based indicator of
|
|
// the relative priority within the Java PriorityLevel.
|
|
const int32_t relativeImportance =
|
|
(static_cast<int32_t>(NUM_PROCESS_PRIORITY) - 1) - intPriority;
|
|
|
|
java::GeckoProcessManager::SetProcessPriority(selector, priorityLevel,
|
|
relativeImportance);
|
|
}
|
|
|
|
} // namespace hal_impl
|
|
} // namespace mozilla
|