| Robert Phillips | 6200036 | 2018-02-01 09:10:04 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrSurfaceProxyRef.h" |
| 9 | #include "GrTextureProxy.h" |
| 10 | |
| 11 | GrSurfaceProxyRef::GrSurfaceProxyRef() { |
| 12 | fProxy = nullptr; |
| 13 | fOwnRef = false; |
| 14 | fPendingIO = false; |
| 15 | } |
| 16 | |
| 17 | GrSurfaceProxyRef::GrSurfaceProxyRef(sk_sp<GrSurfaceProxy> proxy, GrIOType ioType) { |
| 18 | fProxy = nullptr; |
| 19 | fOwnRef = false; |
| 20 | fPendingIO = false; |
| 21 | this->setProxy(std::move(proxy), ioType); |
| 22 | } |
| 23 | |
| 24 | GrSurfaceProxyRef::~GrSurfaceProxyRef() { |
| 25 | this->reset(); |
| 26 | } |
| 27 | |
| 28 | void GrSurfaceProxyRef::reset() { |
| 29 | if (fPendingIO) { |
| 30 | SkASSERT(fProxy); |
| 31 | switch (fIOType) { |
| 32 | case kRead_GrIOType: |
| 33 | fProxy->completedRead(); |
| 34 | break; |
| 35 | case kWrite_GrIOType: |
| 36 | fProxy->completedWrite(); |
| 37 | break; |
| 38 | case kRW_GrIOType: |
| 39 | fProxy->completedRead(); |
| 40 | fProxy->completedWrite(); |
| 41 | break; |
| 42 | } |
| 43 | fPendingIO = false; |
| 44 | } |
| 45 | if (fOwnRef) { |
| 46 | SkASSERT(fProxy); |
| 47 | fProxy->unref(); |
| 48 | fOwnRef = false; |
| 49 | } |
| 50 | |
| 51 | fProxy = nullptr; |
| 52 | } |
| 53 | |
| 54 | void GrSurfaceProxyRef::setProxy(sk_sp<GrSurfaceProxy> proxy, GrIOType ioType) { |
| 55 | SkASSERT(!fPendingIO); |
| 56 | SkASSERT(SkToBool(fProxy) == fOwnRef); |
| 57 | SkSafeUnref(fProxy); |
| 58 | if (!proxy) { |
| 59 | fProxy = nullptr; |
| 60 | fOwnRef = false; |
| 61 | } else { |
| 62 | fProxy = proxy.release(); // due to the semantics of this class we unpack from sk_sp |
| 63 | fOwnRef = true; |
| 64 | fIOType = ioType; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | void GrSurfaceProxyRef::markPendingIO() const { |
| 69 | // This should only be called when the owning GrProgramElement gets its first |
| 70 | // pendingExecution ref. |
| 71 | SkASSERT(!fPendingIO); |
| 72 | SkASSERT(fProxy); |
| 73 | fPendingIO = true; |
| 74 | switch (fIOType) { |
| 75 | case kRead_GrIOType: |
| 76 | fProxy->addPendingRead(); |
| 77 | break; |
| 78 | case kWrite_GrIOType: |
| 79 | fProxy->addPendingWrite(); |
| 80 | break; |
| 81 | case kRW_GrIOType: |
| 82 | fProxy->addPendingRead(); |
| 83 | fProxy->addPendingWrite(); |
| 84 | break; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | void GrSurfaceProxyRef::pendingIOComplete() const { |
| 89 | // This should only be called when the owner's pending executions have ocurred but it is still |
| 90 | // reffed. |
| 91 | SkASSERT(fOwnRef); |
| 92 | SkASSERT(fPendingIO); |
| 93 | switch (fIOType) { |
| 94 | case kRead_GrIOType: |
| 95 | fProxy->completedRead(); |
| 96 | break; |
| 97 | case kWrite_GrIOType: |
| 98 | fProxy->completedWrite(); |
| 99 | break; |
| 100 | case kRW_GrIOType: |
| 101 | fProxy->completedRead(); |
| 102 | fProxy->completedWrite(); |
| 103 | break; |
| 104 | |
| 105 | } |
| 106 | fPendingIO = false; |
| 107 | } |
| 108 | |
| 109 | void GrSurfaceProxyRef::removeRef() const { |
| 110 | // This should only be called once, when the owners last ref goes away and |
| 111 | // there is a pending execution. |
| 112 | SkASSERT(fOwnRef); |
| 113 | SkASSERT(fPendingIO); |
| 114 | SkASSERT(fProxy); |
| 115 | fProxy->unref(); |
| 116 | fOwnRef = false; |
| 117 | } |
| 118 | |