The Tor Browser / file comparison
comparison: layout/base/nsAutoLayoutPhase.cpp
layout/base/nsAutoLayoutPhase.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:747942b555b2 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef DEBUG | |
| 7 static_assert(false, "This should not be compiled in !DEBUG"); | |
| 8 #endif // DEBUG | |
| 9 | |
| 10 #include "nsAutoLayoutPhase.h" | |
| 11 #include "nsPresContext.h" | |
| 12 #include "nsContentUtils.h" | |
| 13 | |
| 14 nsAutoLayoutPhase::nsAutoLayoutPhase(nsPresContext* aPresContext, | |
| 15 nsLayoutPhase aPhase) | |
| 16 : mPresContext(aPresContext) | |
| 17 , mPhase(aPhase) | |
| 18 , mCount(0) | |
| 19 { | |
| 20 Enter(); | |
| 21 } | |
| 22 | |
| 23 nsAutoLayoutPhase::~nsAutoLayoutPhase() | |
| 24 { | |
| 25 Exit(); | |
| 26 MOZ_ASSERT(mCount == 0, "imbalanced"); | |
| 27 } | |
| 28 | |
| 29 void | |
| 30 nsAutoLayoutPhase::Enter() | |
| 31 { | |
| 32 switch (mPhase) { | |
| 33 case eLayoutPhase_Paint: | |
| 34 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0, | |
| 35 "recurring into paint"); | |
| 36 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0, | |
| 37 "painting in the middle of reflow"); | |
| 38 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0, | |
| 39 "painting in the middle of frame construction"); | |
| 40 break; | |
| 41 case eLayoutPhase_Reflow: | |
| 42 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0, | |
| 43 "reflowing in the middle of a paint"); | |
| 44 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0, | |
| 45 "recurring into reflow"); | |
| 46 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0, | |
| 47 "reflowing in the middle of frame construction"); | |
| 48 break; | |
| 49 case eLayoutPhase_FrameC: | |
| 50 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0, | |
| 51 "constructing frames in the middle of a paint"); | |
| 52 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0, | |
| 53 "constructing frames in the middle of reflow"); | |
| 54 MOZ_ASSERT(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0, | |
| 55 "recurring into frame construction"); | |
| 56 MOZ_ASSERT(!nsContentUtils::IsSafeToRunScript(), | |
| 57 "constructing frames and scripts are not blocked"); | |
| 58 break; | |
| 59 case eLayoutPhase_COUNT: | |
| 60 break; | |
| 61 } | |
| 62 | |
| 63 ++(mPresContext->mLayoutPhaseCount[mPhase]); | |
| 64 ++mCount; | |
| 65 } | |
| 66 | |
| 67 void | |
| 68 nsAutoLayoutPhase::Exit() | |
| 69 { | |
| 70 MOZ_ASSERT(mCount > 0 && mPresContext->mLayoutPhaseCount[mPhase] > 0, | |
| 71 "imbalanced"); | |
| 72 --(mPresContext->mLayoutPhaseCount[mPhase]); | |
| 73 --mCount; | |
| 74 } |
