mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
311 lines
8.3 KiB
C++
311 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsXPCOM.h"
|
|
#include "nsMemoryImpl.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
#include "nsIObserver.h"
|
|
#include "nsIObserverService.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsISupportsArray.h"
|
|
|
|
#include "prmem.h"
|
|
#include "prcvar.h"
|
|
#include "pratom.h"
|
|
|
|
#include "nsAlgorithm.h"
|
|
#include "nsAutoLock.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsString.h"
|
|
|
|
#if defined(XP_WIN)
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#if defined(MOZ_PLATFORM_MAEMO) && defined(__arm__)
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
static const char kHighMark[] = "/sys/kernel/high_watermark";
|
|
#endif
|
|
|
|
// Some platforms notify you when system memory is low, others do not.
|
|
// In the case of those that do not, we want to post low memory
|
|
// notifications from IsLowMemory(). For those that can notify us, that
|
|
// code usually lives in toolkit.
|
|
#ifdef WINCE
|
|
#define NOTIFY_LOW_MEMORY
|
|
#endif
|
|
|
|
#ifdef WINCE_WINDOWS_MOBILE
|
|
#include "aygshell.h"
|
|
#endif
|
|
|
|
#include "nsITimer.h"
|
|
|
|
static nsMemoryImpl sGlobalMemory;
|
|
|
|
NS_IMPL_QUERY_INTERFACE1(nsMemoryImpl, nsIMemory)
|
|
|
|
NS_IMETHODIMP_(void*)
|
|
nsMemoryImpl::Alloc(PRSize size)
|
|
{
|
|
return NS_Alloc(size);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void*)
|
|
nsMemoryImpl::Realloc(void* ptr, PRSize size)
|
|
{
|
|
return NS_Realloc(ptr, size);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsMemoryImpl::Free(void* ptr)
|
|
{
|
|
NS_Free(ptr);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::HeapMinimize(PRBool aImmediate)
|
|
{
|
|
return FlushMemory(NS_LITERAL_STRING("heap-minimize").get(), aImmediate);
|
|
}
|
|
|
|
/* this magic number is something greater than 40mb
|
|
* and after all, 40mb should be good enough for any web app
|
|
* unless it's part of an office suite.
|
|
*/
|
|
static const int kRequiredMemory = 0x3000000;
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::IsLowMemory(PRBool *result)
|
|
{
|
|
#if defined(WINCE_WINDOWS_MOBILE)
|
|
MEMORYSTATUS stat;
|
|
GlobalMemoryStatus(&stat);
|
|
*result = (stat.dwMemoryLoad >= 98);
|
|
#elif defined(WINCE)
|
|
// Bug 525323 - GlobalMemoryStatus kills perf on WinCE.
|
|
*result = PR_FALSE;
|
|
#elif defined(XP_WIN)
|
|
MEMORYSTATUSEX stat;
|
|
stat.dwLength = sizeof stat;
|
|
GlobalMemoryStatusEx(&stat);
|
|
*result = (stat.ullAvailPageFile < kRequiredMemory) &&
|
|
((float)stat.ullAvailPageFile / stat.ullTotalPageFile) < 0.1;
|
|
#elif defined(MOZ_PLATFORM_MAEMO) && defined(__arm__)
|
|
static int osso_highmark_fd = -1;
|
|
if (osso_highmark_fd == -1) {
|
|
osso_highmark_fd = open (kHighMark, O_RDONLY);
|
|
|
|
if (osso_highmark_fd == -1) {
|
|
NS_ERROR("can't find the osso highmark file");
|
|
*result = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// be kind, rewind.
|
|
lseek(osso_highmark_fd, 0L, SEEK_SET);
|
|
|
|
int c = 0;
|
|
read (osso_highmark_fd, &c, 1);
|
|
|
|
*result = (c == '1');
|
|
#else
|
|
*result = PR_FALSE;
|
|
#endif
|
|
|
|
#ifdef NOTIFY_LOW_MEMORY
|
|
if (*result) {
|
|
sGlobalMemory.FlushMemory(NS_LITERAL_STRING("low-memory").get(), PR_FALSE);
|
|
}
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
/*static*/ nsresult
|
|
nsMemoryImpl::Create(nsISupports* outer, const nsIID& aIID, void **aResult)
|
|
{
|
|
NS_ENSURE_NO_AGGREGATION(outer);
|
|
return sGlobalMemory.QueryInterface(aIID, aResult);
|
|
}
|
|
|
|
nsresult
|
|
nsMemoryImpl::FlushMemory(const PRUnichar* aReason, PRBool aImmediate)
|
|
{
|
|
nsresult rv;
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
PRInt32 lastVal = PR_AtomicSet(&sIsFlushing, 1);
|
|
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, NS_DISPATCH_NORMAL);
|
|
}
|
|
}
|
|
|
|
sLastFlushTime = now;
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsMemoryImpl::RunFlushers(const PRUnichar* aReason)
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = do_GetService("@mozilla.org/observer-service;1");
|
|
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;
|
|
PRBool loop = PR_TRUE;
|
|
|
|
while (NS_SUCCEEDED(e->HasMoreElements(&loop)) && loop)
|
|
{
|
|
e->GetNext(getter_AddRefs(observer));
|
|
|
|
if (!observer)
|
|
continue;
|
|
|
|
observer->Observe(observer, "memory-pressure", aReason);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Run built-in system flushers
|
|
#ifdef WINCE_WINDOWS_MOBILE
|
|
|
|
// This function tries to free up memory for an application.
|
|
// If necessary, the shell closes down other applications by
|
|
// sending WM_CLOSE messages. We ask for 4MB.
|
|
|
|
SHCloseApps(1024 * 1024 * 4);
|
|
|
|
#endif
|
|
|
|
sIsFlushing = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX need NS_IMPL_STATIC_ADDREF/RELEASE
|
|
NS_IMETHODIMP_(nsrefcnt) nsMemoryImpl::FlushEvent::AddRef() { return 2; }
|
|
NS_IMETHODIMP_(nsrefcnt) nsMemoryImpl::FlushEvent::Release() { return 1; }
|
|
NS_IMPL_QUERY_INTERFACE1(nsMemoryImpl::FlushEvent, nsIRunnable)
|
|
|
|
NS_IMETHODIMP
|
|
nsMemoryImpl::FlushEvent::Run()
|
|
{
|
|
sGlobalMemory.RunFlushers(mReason);
|
|
return NS_OK;
|
|
}
|
|
|
|
PRInt32
|
|
nsMemoryImpl::sIsFlushing = 0;
|
|
|
|
PRIntervalTime
|
|
nsMemoryImpl::sLastFlushTime = 0;
|
|
|
|
nsMemoryImpl::FlushEvent
|
|
nsMemoryImpl::sFlushEvent;
|
|
|
|
XPCOM_API(void*)
|
|
NS_Alloc(PRSize size)
|
|
{
|
|
if (size > PR_INT32_MAX)
|
|
return nsnull;
|
|
|
|
void* result = PR_Malloc(size);
|
|
if (! result) {
|
|
// Request an asynchronous flush
|
|
sGlobalMemory.FlushMemory(NS_LITERAL_STRING("alloc-failure").get(), PR_FALSE);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
XPCOM_API(void*)
|
|
NS_Realloc(void* ptr, PRSize size)
|
|
{
|
|
if (size > PR_INT32_MAX)
|
|
return nsnull;
|
|
|
|
void* result = PR_Realloc(ptr, size);
|
|
if (! result && size != 0) {
|
|
// Request an asynchronous flush
|
|
sGlobalMemory.FlushMemory(NS_LITERAL_STRING("alloc-failure").get(), PR_FALSE);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
XPCOM_API(void)
|
|
NS_Free(void* ptr)
|
|
{
|
|
PR_Free(ptr);
|
|
}
|
|
|
|
nsresult
|
|
NS_GetMemoryManager(nsIMemory* *result)
|
|
{
|
|
return sGlobalMemory.QueryInterface(NS_GET_IID(nsIMemory), (void**) result);
|
|
}
|