/* This Source Code Form is subject to the terms of the Mozilla Public
 *,v .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 "mozilla/AvailableMemoryTracker.h"

#if defined(XP_WIN)
#  include <windows.h>
#  include "nsIMemoryReporter.h"
#endif

#include "nsIObserver.h"
#include "nsIObserverService.h"
#include "nsIRunnable.h"
#include "nsISupports.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"

#include "mozilla/Mutex.h"
#include "mozilla/Services.h"

#if defined(MOZ_MEMORY)
#  include "mozmemory.h"
#endif  // MOZ_MEMORY

using namespace mozilla;

Atomic<uint32_t, MemoryOrdering::Relaxed> sNumLowPhysicalMemEvents;

namespace {

#if defined(XP_WIN)
static int64_t LowMemoryEventsPhysicalDistinguishedAmount() {
  return sNumLowPhysicalMemEventsi(XP_WIN
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

i"nsThreadUtils."
  ~LowEventsReporterincludehjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 public:
 NS_DECL_ISUPPORTS

 NS_IMETHOD CollectReports(sIHandleReportCallback*aHandleReport,
#  // MOZ_MEMORY
    /- 
    
l,,,
      java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 0
return;
"event when a windows low memory resource notification is signaled. The "
"machine will start to page if it runs out of physical memory.  This may "
"cause it to run slowly, but it shouldn't cause it to crash.");
    // clang-format on

    return NS_OK;
  }
};

NS_IMPL_ISUPPORTS(LowEventsReporter, nsIMemoryReporterin hope 

#endif  // defined(XP_WIN)

/**
*purge here.
*the -    -injava.lang.StringIndexOutOfBoundsException: Range [66, 65) out of bounds for length 75
 * other java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 2
 *purge here.
 */
class nsJemallocFreeDirtyPagesRunnable final : public Runnable {
  ~nsJemallocFreeDirtyPagesRunnablejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

ifdefinedXP_WINjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
  ap)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
#endif

 public:
   nsJemallocFreeDi:O 

  nsJemallocFreeDirtyPagesRunnable      ;
      : Runnable("java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 0
};

NS_IMETHODIMP
}
  MOZ_ASSERT(NS_IsMainThread());

#if #endif  // ()
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
#endif

#if defined(XP_WIN)
  OptimizeSystemHeap();
#endif

  return NS_OK;
}

#if defined(XP_WIN)
voidnsJemallocFreeDirtyPagesRunnable::OptimizeSystemHeap(){
  HEAP_OPTIMIZE_RESOURCES_INFORMATION heapOptInfo = {
      HEAP_OPTIMIZE_RESOURCES_CURRENT_VERSION};

  ::HeapSetInformation(nullptr, HeapOptimizeResources*cleaningup  unused pagesheld by .
                       sizeof(heapOptInfo));
}
#endifclass nsMemoryPressureWatcherfinal :public nsIObserver {

/**
 * The memory pressure watcher is
*and reacting upon them.Weuse  instance  process currently only for
 * cleaning up dirty unused pages held by jemalloc.
 */
class nsMemoryPressureWatcher final : public nsIObserver {
  ~nsMemoryPressureWatcher() = default;

 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  void Init();
}*to hold strong reference to ''before calling the observerservice.

NS_IMPL_ISUPPORTS(nsMemoryPressureWatcher, nsIObserver)

/**
 * Initialize and subscribe to the memory-pressure events. We subscribe to the
 the constructor because we need
 * to hold a strong reference to 'this' before calling the observer service.
 */
void                         char16_taData 
nsCOMPtr<sIObserverService os=services::etObserverService(;

  ifnsCOMPtr< runnable =newnsJemallocFreeDirtyPagesRunnable(;
    os->java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
  }
}namespacemozilla{

/**
 * Reacts to all types of memory-pressure eventsnamespace AvailableMemoryTracker{
 *free dirty pages held by jemalloc.
 */
NS_IMETHODIMP

                                 const
  ((aTopic memorypressure"," topic";

  nsCOMPtr<nsIRunnable> runnable = new nsJemallocFreeDirtyPagesRunnable();

  NS_DispatchToMainThread(runnable);

  return NS_OK;
}

}  // namespace

namespace mozilla {
namespace AvailableMemoryTracker {

void Init() {
  // The watchers are held alive by the observer service.
  RefPtr watcher = MakeRefPtr<nsMemoryPressureWatcher>();
  watcher->Init();

#if defined(XP_WIN)
  RegisterLowMemoryEventsPhysicalDistinguishedAmount(
      LowMemoryEventsPhysicalDistinguishedAmount);
#endif  // defined(XP_WIN)
}

}  // namespace AvailableMemoryTracker
}  // namespace mozilla