mirror of
https://github.com/ManchildProductions/UXP-Fixed.git
synced 2026-05-26 23:01:21 +00:00
Matt A. Tobin
152 lines
3.5 KiB
C++
152 lines
3.5 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsMemoryImpl.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
#include "nsIObserver.h"
|
|
#include "nsIObserverService.h"
|
|
#include "nsISimpleEnumerator.h"
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "mozilla/Services.h"
|
|
|
|
static nsMemoryImpl sGlobalMemory;
|
|
|
|
NS_IMPL_QUERY_INTERFACE(nsMemoryImpl, nsIMemory)
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::HeapMinimize(bool aImmediate)
|
|
{
|
|
return FlushMemory(u"heap-minimize", aImmediate);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::IsLowMemoryPlatform(bool* aResult)
|
|
{
|
|
*aResult = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/*static*/ nsresult
|
|
nsMemoryImpl::Create(nsISupports* aOuter, const nsIID& aIID, void** aResult)
|
|
{
|
|
if (NS_WARN_IF(aOuter)) {
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
}
|
|
return sGlobalMemory.QueryInterface(aIID, aResult);
|
|
}
|
|
|
|
nsresult
|
|
nsMemoryImpl::FlushMemory(const char16_t* aReason, bool aImmediate)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
if (aImmediate) {
|
|
// They've asked us to run the flusher *immediately*. We've
|
|
// got to be on the UI main thread for us to be able to do
|
|
// that...are we?
|
|
if (!NS_IsMainThread()) {
|
|
NS_ERROR("can't synchronously flush memory: not on UI thread");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
bool lastVal = sIsFlushing.exchange(true);
|
|
if (lastVal) {
|
|
return NS_OK;
|
|
}
|
|
|
|
PRIntervalTime now = PR_IntervalNow();
|
|
|
|
// Run the flushers immediately if we can; otherwise, proxy to the
|
|
// UI thread an run 'em asynchronously.
|
|
if (aImmediate) {
|
|
rv = RunFlushers(aReason);
|
|
} else {
|
|
// Don't broadcast more than once every 1000ms to avoid being noisy
|
|
if (PR_IntervalToMicroseconds(now - sLastFlushTime) > 1000) {
|
|
sFlushEvent.mReason = aReason;
|
|
rv = NS_DispatchToMainThread(&sFlushEvent);
|
|
}
|
|
}
|
|
|
|
sLastFlushTime = now;
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsMemoryImpl::RunFlushers(const char16_t* aReason)
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
|
|
// Instead of:
|
|
// os->NotifyObservers(this, "memory-pressure", aReason);
|
|
// we are going to do this manually to see who/what is
|
|
// deallocating.
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> e;
|
|
os->EnumerateObservers("memory-pressure", getter_AddRefs(e));
|
|
|
|
if (e) {
|
|
nsCOMPtr<nsIObserver> observer;
|
|
bool loop = true;
|
|
|
|
while (NS_SUCCEEDED(e->HasMoreElements(&loop)) && loop) {
|
|
nsCOMPtr<nsISupports> supports;
|
|
e->GetNext(getter_AddRefs(supports));
|
|
|
|
if (!supports) {
|
|
continue;
|
|
}
|
|
|
|
observer = do_QueryInterface(supports);
|
|
observer->Observe(observer, "memory-pressure", aReason);
|
|
}
|
|
}
|
|
}
|
|
|
|
sIsFlushing = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX need NS_IMPL_STATIC_ADDREF/RELEASE
|
|
NS_IMETHODIMP_(MozExternalRefCountType)
|
|
nsMemoryImpl::FlushEvent::AddRef()
|
|
{
|
|
return 2;
|
|
}
|
|
NS_IMETHODIMP_(MozExternalRefCountType)
|
|
nsMemoryImpl::FlushEvent::Release()
|
|
{
|
|
return 1;
|
|
}
|
|
NS_IMPL_QUERY_INTERFACE(nsMemoryImpl::FlushEvent, nsIRunnable)
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::FlushEvent::Run()
|
|
{
|
|
sGlobalMemory.RunFlushers(mReason);
|
|
return NS_OK;
|
|
}
|
|
|
|
mozilla::Atomic<bool>
|
|
nsMemoryImpl::sIsFlushing;
|
|
|
|
PRIntervalTime
|
|
nsMemoryImpl::sLastFlushTime = 0;
|
|
|
|
nsMemoryImpl::FlushEvent
|
|
nsMemoryImpl::sFlushEvent;
|
|
|
|
nsresult
|
|
NS_GetMemoryManager(nsIMemory** aResult)
|
|
{
|
|
return sGlobalMemory.QueryInterface(NS_GET_IID(nsIMemory), (void**)aResult);
|
|
}
|