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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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gfx/config/gfxFeature.h Normal file
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/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sts=2 ts=8 sw=2 tw=99 et: */
/* 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_gfx_config_gfxFeature_h
#define mozilla_gfx_config_gfxFeature_h
#include <stdint.h>
#include "gfxTelemetry.h"
#include "mozilla/Assertions.h"
#include "mozilla/Function.h"
#include "nsString.h"
namespace mozilla {
namespace gfx {
#define GFX_FEATURE_MAP(_) \
/* Name, Type, Description */ \
_(HW_COMPOSITING, Feature, "Compositing") \
_(D3D11_COMPOSITING, Feature, "Direct3D11 Compositing") \
_(D3D9_COMPOSITING, Feature, "Direct3D9 Compositing") \
_(OPENGL_COMPOSITING, Feature, "OpenGL Compositing") \
_(DIRECT2D, Feature, "Direct2D") \
_(D3D11_HW_ANGLE, Feature, "Direct3D11 hardware ANGLE") \
_(DIRECT_DRAW, Feature, "DirectDraw") \
_(GPU_PROCESS, Feature, "GPU Process") \
/* Add new entries above this comment */
enum class Feature : uint32_t {
#define MAKE_ENUM(name, type, desc) name,
GFX_FEATURE_MAP(MAKE_ENUM)
#undef MAKE_ENUM
NumValues
};
class FeatureState
{
friend class gfxConfig;
public:
bool IsEnabled() const;
FeatureStatus GetValue() const;
void EnableByDefault();
void DisableByDefault(FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId);
bool SetDefault(bool aEnable, FeatureStatus aDisableStatus, const char* aDisableMessage);
bool InitOrUpdate(bool aEnable,
FeatureStatus aDisableStatus,
const char* aMessage);
void SetDefaultFromPref(const char* aPrefName,
bool aIsEnablePref,
bool aDefaultValue);
void UserEnable(const char* aMessage);
void UserForceEnable(const char* aMessage);
void UserDisable(const char* aMessage, const nsACString& aFailureId);
void Disable(FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId);
void ForceDisable(FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId) {
SetFailed(aStatus, aMessage, aFailureId);
}
void SetFailed(FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId);
bool MaybeSetFailed(bool aEnable, FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId);
bool MaybeSetFailed(FeatureStatus aStatus, const char* aMessage, const nsACString& aFailureId);
// aType is "base", "user", "env", or "runtime".
// aMessage may be null.
typedef mozilla::function<void(const char* aType,
FeatureStatus aStatus,
const char* aMessage)> StatusIterCallback;
void ForEachStatusChange(const StatusIterCallback& aCallback) const;
const char* GetFailureMessage() const;
const nsCString& GetFailureId() const;
bool DisabledByDefault() const;
private:
void SetUser(FeatureStatus aStatus, const char* aMessage);
void SetEnvironment(FeatureStatus aStatus, const char* aMessage);
void SetRuntime(FeatureStatus aStatus, const char* aMessage);
bool IsForcedOnByUser() const;
const char* GetRuntimeMessage() const;
bool IsInitialized() const {
return mDefault.IsInitialized();
}
void AssertInitialized() const {
MOZ_ASSERT(IsInitialized());
}
// Clear all state.
void Reset();
private:
void SetFailureId(const nsACString& aFailureId);
struct Instance {
char mMessage[64];
FeatureStatus mStatus;
void Set(FeatureStatus aStatus, const char* aMessage = nullptr);
bool IsInitialized() const {
return mStatus != FeatureStatus::Unused;
}
const char* MessageOrNull() const {
return mMessage[0] != '\0' ? mMessage : nullptr;
}
const char* Message() const {
MOZ_ASSERT(MessageOrNull());
return mMessage;
}
};
// The default state is the state we decide on startup, based on the operating
// system or a base preference.
//
// The user state factors in any changes to preferences that the user made.
//
// The environment state factors in any additional decisions made, such as
// availability or blacklisting.
//
// The runtime state factors in any problems discovered at runtime.
Instance mDefault;
Instance mUser;
Instance mEnvironment;
Instance mRuntime;
// Store the first reported failureId for now but we might want to track this
// by instance later if we need a specific breakdown.
nsCString mFailureId;
};
} // namespace gfx
} // namespace mozilla
#endif // mozilla_gfx_config_gfxFeature_h