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Bug 860799 - Part 1: Give frames expecting a system message priority at least BACKGROUND_PERCEIVABLE, so long as either haven't yet handled the system message or are holding the CPU/high-priority wake lock. r=khuey

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This commit is contained in:
Justin Lebar 2013-04-25 20:53:26 -04:00
parent 9a39e4d0c4
commit 37ebeead76
1 changed files with 28 additions and 0 deletions
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28
dom/ipc/ProcessPriorityManager.cpp
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@ -28,6 +28,7 @@
#include "nsIDOMDocument.h"
#include "nsPIDOMWindow.h"
#include "StaticPtr.h"
#include "nsIMozBrowserFrame.h"
#include "nsIObserver.h"
#include "nsITimer.h"
#include "nsPrintfCString.h"
@ -228,6 +229,7 @@ public:
const nsAutoCString& NameWithComma();
bool HasAppType(const char* aAppType);
bool IsExpectingSystemMessage();
void OnAudioChannelProcessChanged(nsISupports* aSubject);
void OnRemoteBrowserFrameShown(nsISupports* aSubject);
@ -702,6 +704,27 @@ ParticularProcessPriorityManager::HasAppType(const char* aAppType)
return false;
}
bool
ParticularProcessPriorityManager::IsExpectingSystemMessage()
{
const InfallibleTArray<PBrowserParent*>& browsers =
mContentParent->ManagedPBrowserParent();
for (uint32_t i = 0; i < browsers.Length(); i++) {
TabParent* tp = static_cast<TabParent*>(browsers[i]);
nsCOMPtr<nsIDOMElement> ownerElement = tp->GetOwnerElement();
nsCOMPtr<nsIMozBrowserFrame> bf = do_QueryInterface(ownerElement);
if (!bf) {
continue;
}
if (bf->GetIsExpectingSystemMessage()) {
return true;
}
}
return false;
}
ProcessPriority
ParticularProcessPriorityManager::ComputePriority()
{
@ -724,6 +747,11 @@ ParticularProcessPriorityManager::ComputePriority()
return PROCESS_PRIORITY_FOREGROUND;
}
if ((mHoldsCPUWakeLock || mHoldsHighPriorityWakeLock) &&
IsExpectingSystemMessage()) {
return PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE;
}
AudioChannelService* service = AudioChannelService::GetAudioChannelService();
if (service->ProcessContentOrNormalChannelIsActive(ChildID())) {
return PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE;