dom/console/Console.h
author Timothy Nikkel <tnikkel@gmail.com>
Thu, 16 Mar 2017 03:06:06 -0500
changeset 348004 d4cafcc44babd82e009801f6d453b6002fb280d7
parent 326265 a1a83bf44226e2c6602f347636e090525cef075b
child 354113 d1fe2d7d463fd36b821877ec38e398e142d2d6b7
permissions -rw-r--r--
Bug 1343341. Only set the animation state as discarded if we discarded the animated frames (and not a static frame from a first-frame-only decode). r=aosmond The SurfaceCache can hold the first frame of a "static" decode as well as the animated frames in two seperate entries. We only care about what happens to the animated frames, so ignore OnSurfaceDiscarded for anything else. To accomplish this we must pass the SurfaceKey to OnSurfaceDiscarded.

/* -*- 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/. */

#ifndef mozilla_dom_Console_h
#define mozilla_dom_Console_h

#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/JSObjectHolder.h"
#include "nsCycleCollectionParticipant.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"
#include "nsDOMNavigationTiming.h"
#include "nsPIDOMWindow.h"

class nsIConsoleAPIStorage;
class nsIPrincipal;

namespace mozilla {
namespace dom {

class AnyCallback;
class ConsoleCallData;
class ConsoleRunnable;
class ConsoleCallDataRunnable;
class ConsoleProfileRunnable;
struct ConsoleStackEntry;

class Console final : public nsIObserver
                    , public nsSupportsWeakReference
{
public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(Console, nsIObserver)
  NS_DECL_NSIOBSERVER

  static already_AddRefed<Console>
  Create(nsPIDOMWindowInner* aWindow, ErrorResult& aRv);

  // WebIDL methods
  nsPIDOMWindowInner* GetParentObject() const
  {
    return mWindow;
  }

  static void
  Log(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Info(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Warn(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Error(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Exception(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Debug(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Table(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Trace(const GlobalObject& aGlobal);

  static void
  Dir(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Dirxml(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Group(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  GroupCollapsed(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  GroupEnd(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Time(const GlobalObject& aGlobal, const JS::Handle<JS::Value> aTime);

  static void
  TimeEnd(const GlobalObject& aGlobal, const JS::Handle<JS::Value> aTime);

  static void
  TimeStamp(const GlobalObject& aGlobal, const JS::Handle<JS::Value> aData);

  static void
  Profile(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  ProfileEnd(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Assert(const GlobalObject& aGlobal, bool aCondition,
         const Sequence<JS::Value>& aData);

  static void
  Count(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  Clear(const GlobalObject& aGlobal, const Sequence<JS::Value>& aData);

  static void
  NoopMethod(const GlobalObject& aGlobal);

  void
  ClearStorage();

  void
  RetrieveConsoleEvents(JSContext* aCx, nsTArray<JS::Value>& aEvents,
                        ErrorResult& aRv);

  void
  SetConsoleEventHandler(AnyCallback* aHandler);

private:
  explicit Console(nsPIDOMWindowInner* aWindow);
  ~Console();

  void
  Initialize(ErrorResult& aRv);

  void
  Shutdown();

  enum MethodName
  {
    MethodLog,
    MethodInfo,
    MethodWarn,
    MethodError,
    MethodException,
    MethodDebug,
    MethodTable,
    MethodTrace,
    MethodDir,
    MethodDirxml,
    MethodGroup,
    MethodGroupCollapsed,
    MethodGroupEnd,
    MethodTime,
    MethodTimeEnd,
    MethodTimeStamp,
    MethodAssert,
    MethodCount,
    MethodClear
  };

  static already_AddRefed<Console>
  GetConsole(const GlobalObject& aGlobal);

  static Console*
  GetConsoleInternal(const GlobalObject& aGlobal, ErrorResult &aRv);

  static void
  ProfileMethod(const GlobalObject& aGlobal, const nsAString& aAction,
                const Sequence<JS::Value>& aData);

  void
  ProfileMethodInternal(JSContext* aCx, const nsAString& aAction,
                        const Sequence<JS::Value>& aData);

  static void
  Method(const GlobalObject& aGlobal, MethodName aName,
         const nsAString& aString, const Sequence<JS::Value>& aData);

  void
  MethodInternal(JSContext* aCx, MethodName aName,
         const nsAString& aString, const Sequence<JS::Value>& aData);

  // This method must receive aCx and aArguments in the same JSCompartment.
  void
  ProcessCallData(JSContext* aCx,
                  ConsoleCallData* aData,
                  const Sequence<JS::Value>& aArguments);

  void
  StoreCallData(ConsoleCallData* aData);

  void
  UnstoreCallData(ConsoleCallData* aData);

  // Read in Console.cpp how this method is used.
  void
  ReleaseCallData(ConsoleCallData* aCallData);

  // aCx and aArguments must be in the same JS compartment.
  void
  NotifyHandler(JSContext* aCx,
                const Sequence<JS::Value>& aArguments,
                ConsoleCallData* aData) const;

  // PopulateConsoleNotificationInTheTargetScope receives aCx and aArguments in
  // the same JS compartment and populates the ConsoleEvent object (aValue) in
  // the aTargetScope.
  // aTargetScope can be:
  // - the system-principal scope when we want to dispatch the ConsoleEvent to
  //   nsIConsoleAPIStorage (See the comment in Console.cpp about the use of
  //   xpc::PrivilegedJunkScope()
  // - the mConsoleEventNotifier->Callable() scope when we want to notify this
  //   handler about a new ConsoleEvent.
  // - It can be the global from the JSContext when RetrieveConsoleEvents is
  //   called.
  bool
  PopulateConsoleNotificationInTheTargetScope(JSContext* aCx,
                                              const Sequence<JS::Value>& aArguments,
                                              JSObject* aTargetScope,
                                              JS::MutableHandle<JS::Value> aValue,
                                              ConsoleCallData* aData) const;

  // If the first JS::Value of the array is a string, this method uses it to
  // format a string. The supported sequences are:
  //   %s    - string
  //   %d,%i - integer
  //   %f    - double
  //   %o,%O - a JS object.
  //   %c    - style string.
  // The output is an array where any object is a separated item, the rest is
  // unified in a format string.
  // Example if the input is:
  //   "string: %s, integer: %d, object: %o, double: %d", 's', 1, window, 0.9
  // The output will be:
  //   [ "string: s, integer: 1, object: ", window, ", double: 0.9" ]
  //
  // The aStyles array is populated with the style strings that the function
  // finds based the format string. The index of the styles matches the indexes
  // of elements that need the custom styling from aSequence. For elements with
  // no custom styling the array is padded with null elements.
  bool
  ProcessArguments(JSContext* aCx, const Sequence<JS::Value>& aData,
                   Sequence<JS::Value>& aSequence,
                   Sequence<nsString>& aStyles) const;

  void
  MakeFormatString(nsCString& aFormat, int32_t aInteger, int32_t aMantissa,
                   char aCh) const;

  // Stringify and Concat all the JS::Value in a single string using ' ' as
  // separator.
  void
  ComposeGroupName(JSContext* aCx, const Sequence<JS::Value>& aData,
                   nsAString& aName) const;

  // StartTimer is called on the owning thread and populates aTimerLabel and
  // aTimerValue. It returns false if a JS exception is thrown or if
  // the max number of timers is reached.
  // * aCx - the JSContext rooting aName.
  // * aName - this is (should be) the name of the timer as JS::Value.
  // * aTimestamp - the monotonicTimer for this context taken from
  //                performance.now().
  // * aTimerLabel - This label will be populated with the aName converted to a
  //                 string.
  // * aTimerValue - the StartTimer value stored into (or taken from)
  //                 mTimerRegistry.
  bool
  StartTimer(JSContext* aCx, const JS::Value& aName,
             DOMHighResTimeStamp aTimestamp,
             nsAString& aTimerLabel,
             DOMHighResTimeStamp* aTimerValue);

  // CreateStartTimerValue generates a ConsoleTimerStart dictionary exposed as
  // JS::Value. If aTimerStatus is false, it generates a ConsoleTimerError
  // instead. It's called only after the execution StartTimer on the owning
  // thread.
  // * aCx - this is the context that will root the returned value.
  // * aTimerLabel - this label must be what StartTimer received as aTimerLabel.
  // * aTimerStatus - the return value of StartTimer.
  JS::Value
  CreateStartTimerValue(JSContext* aCx, const nsAString& aTimerLabel,
                        bool aTimerStatus) const;

  // StopTimer follows the same pattern as StartTimer: it runs on the
  // owning thread and populates aTimerLabel and aTimerDuration, used by
  // CreateStopTimerValue. It returns false if a JS exception is thrown or if
  // the aName timer doesn't exist in the mTimerRegistry.
  // * aCx - the JSContext rooting aName.
  // * aName - this is (should be) the name of the timer as JS::Value.
  // * aTimestamp - the monotonicTimer for this context taken from
  //                performance.now().
  // * aTimerLabel - This label will be populated with the aName converted to a
  //                 string.
  // * aTimerDuration - the difference between aTimestamp and when the timer
  //                    started (see StartTimer).
  bool
  StopTimer(JSContext* aCx, const JS::Value& aName,
            DOMHighResTimeStamp aTimestamp,
            nsAString& aTimerLabel,
            double* aTimerDuration);

  // This method generates a ConsoleTimerEnd dictionary exposed as JS::Value, or
  // a ConsoleTimerError dictionary if aTimerStatus is false. See StopTimer.
  // * aCx - this is the context that will root the returned value.
  // * aTimerLabel - this label must be what StopTimer received as aTimerLabel.
  // * aTimerDuration - this is what StopTimer received as aTimerDuration
  // * aTimerStatus - the return value of StopTimer.
  JS::Value
  CreateStopTimerValue(JSContext* aCx, const nsAString& aTimerLabel,
                       double aTimerDuration,
                       bool aTimerStatus) const;

  // The method populates a Sequence from an array of JS::Value.
  bool
  ArgumentsToValueList(const Sequence<JS::Value>& aData,
                       Sequence<JS::Value>& aSequence) const;

  // This method follows the same pattern as StartTimer: its runs on the owning
  // thread and populate aCountLabel, used by CreateCounterValue. Returns
  // MAX_PAGE_COUNTERS in case of error, otherwise the incremented counter
  // value.
  // * aCx - the JSContext rooting aData.
  // * aFrame - the first frame of ConsoleCallData.
  // * aData - the arguments received by the console.count() method.
  // * aCountLabel - the label that will be populated by this method.
  uint32_t
  IncreaseCounter(JSContext* aCx, const ConsoleStackEntry& aFrame,
                  const Sequence<JS::Value>& aData,
                  nsAString& aCountLabel);

  // This method generates a ConsoleCounter dictionary as JS::Value. If
  // aCountValue is == MAX_PAGE_COUNTERS it generates a ConsoleCounterError
  // instead. See IncreaseCounter.
  // * aCx - this is the context that will root the returned value.
  // * aCountLabel - this label must be what IncreaseCounter received as
  //                 aTimerLabel.
  // * aCountValue - the return value of IncreaseCounter.
  JS::Value
  CreateCounterValue(JSContext* aCx, const nsAString& aCountLabel,
                     uint32_t aCountValue) const;

  bool
  ShouldIncludeStackTrace(MethodName aMethodName) const;

  JSObject*
  GetOrCreateSandbox(JSContext* aCx, nsIPrincipal* aPrincipal);

  void
  AssertIsOnOwningThread() const;

  bool
  IsShuttingDown() const;

  // All these nsCOMPtr are touched on main thread only.
  nsCOMPtr<nsPIDOMWindowInner> mWindow;
  nsCOMPtr<nsIConsoleAPIStorage> mStorage;
  RefPtr<JSObjectHolder> mSandbox;

  // Touched on the owner thread.
  nsDataHashtable<nsStringHashKey, DOMHighResTimeStamp> mTimerRegistry;
  nsDataHashtable<nsStringHashKey, uint32_t> mCounterRegistry;

  nsTArray<RefPtr<ConsoleCallData>> mCallDataStorage;

  // This array is used in a particular corner-case where:
  // 1. we are in a worker thread
  // 2. we have more than STORAGE_MAX_EVENTS
  // 3. but the main-thread ConsoleCallDataRunnable of the first one is still
  // running (this means that something very bad is happening on the
  // main-thread).
  // When this happens we want to keep the ConsoleCallData alive for traceing
  // its JSValues also if 'officially' this ConsoleCallData must be removed from
  // the storage.
  nsTArray<RefPtr<ConsoleCallData>> mCallDataStoragePending;

  RefPtr<AnyCallback> mConsoleEventNotifier;

#ifdef DEBUG
  PRThread* mOwningThread;
#endif

  uint64_t mOuterID;
  uint64_t mInnerID;

  enum {
    eUnknown,
    eInitialized,
    eShuttingDown
  } mStatus;

  friend class ConsoleCallData;
  friend class ConsoleRunnable;
  friend class ConsoleCallDataRunnable;
  friend class ConsoleProfileRunnable;
};

} // namespace dom
} // namespace mozilla

#endif /* mozilla_dom_Console_h */