gfx/layers/client/TextureClientPool.cpp@6474c204b198 (annotated)
gfx/layers/client/TextureClientPool.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "TextureClientPool.h" |
| michael@0 | 7 | #include "CompositableClient.h" |
| michael@0 | 8 | #include "mozilla/layers/ISurfaceAllocator.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #include "gfxPrefs.h" |
| michael@0 | 11 | |
| michael@0 | 12 | #include "nsComponentManagerUtils.h" |
| michael@0 | 13 | |
| michael@0 | 14 | namespace mozilla { |
| michael@0 | 15 | namespace layers { |
| michael@0 | 16 | |
| michael@0 | 17 | static void |
| michael@0 | 18 | ShrinkCallback(nsITimer *aTimer, void *aClosure) |
| michael@0 | 19 | { |
| michael@0 | 20 | static_cast<TextureClientPool*>(aClosure)->ShrinkToMinimumSize(); |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | TextureClientPool::TextureClientPool(gfx::SurfaceFormat aFormat, gfx::IntSize aSize, |
| michael@0 | 24 | ISurfaceAllocator *aAllocator) |
| michael@0 | 25 | : mFormat(aFormat) |
| michael@0 | 26 | , mSize(aSize) |
| michael@0 | 27 | , mOutstandingClients(0) |
| michael@0 | 28 | , mSurfaceAllocator(aAllocator) |
| michael@0 | 29 | { |
| michael@0 | 30 | mTimer = do_CreateInstance("@mozilla.org/timer;1"); |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | TextureClientPool::~TextureClientPool() |
| michael@0 | 34 | { |
| michael@0 | 35 | mTimer->Cancel(); |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | TemporaryRef<TextureClient> |
| michael@0 | 39 | TextureClientPool::GetTextureClient() |
| michael@0 | 40 | { |
| michael@0 | 41 | mOutstandingClients++; |
| michael@0 | 42 | |
| michael@0 | 43 | // Try to fetch a client from the pool |
| michael@0 | 44 | RefPtr<TextureClient> textureClient; |
| michael@0 | 45 | if (mTextureClients.size()) { |
| michael@0 | 46 | textureClient = mTextureClients.top(); |
| michael@0 | 47 | textureClient->WaitReleaseFence(); |
| michael@0 | 48 | mTextureClients.pop(); |
| michael@0 | 49 | return textureClient; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | // We're increasing the number of outstanding TextureClients without reusing a |
| michael@0 | 53 | // client, we may need to free a deferred-return TextureClient. |
| michael@0 | 54 | ShrinkToMaximumSize(); |
| michael@0 | 55 | |
| michael@0 | 56 | // No unused clients in the pool, create one |
| michael@0 | 57 | if (gfxPrefs::ForceShmemTiles()) { |
| michael@0 | 58 | // gfx::BackendType::NONE means use the content backend |
| michael@0 | 59 | textureClient = TextureClient::CreateBufferTextureClient(mSurfaceAllocator, |
| michael@0 | 60 | mFormat, TEXTURE_IMMEDIATE_UPLOAD, gfx::BackendType::NONE); |
| michael@0 | 61 | } else { |
| michael@0 | 62 | textureClient = TextureClient::CreateTextureClientForDrawing(mSurfaceAllocator, |
| michael@0 | 63 | mFormat, TEXTURE_IMMEDIATE_UPLOAD, gfx::BackendType::NONE, mSize); |
| michael@0 | 64 | } |
| michael@0 | 65 | textureClient->AllocateForSurface(mSize, ALLOC_DEFAULT); |
| michael@0 | 66 | |
| michael@0 | 67 | return textureClient; |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | void |
| michael@0 | 71 | TextureClientPool::ReturnTextureClient(TextureClient *aClient) |
| michael@0 | 72 | { |
| michael@0 | 73 | if (!aClient) { |
| michael@0 | 74 | return; |
| michael@0 | 75 | } |
| michael@0 | 76 | MOZ_ASSERT(mOutstandingClients); |
| michael@0 | 77 | mOutstandingClients--; |
| michael@0 | 78 | |
| michael@0 | 79 | // Add the client to the pool and shrink down if we're beyond our maximum size |
| michael@0 | 80 | mTextureClients.push(aClient); |
| michael@0 | 81 | ShrinkToMaximumSize(); |
| michael@0 | 82 | |
| michael@0 | 83 | // Kick off the pool shrinking timer if there are still more unused texture |
| michael@0 | 84 | // clients than our desired minimum cache size. |
| michael@0 | 85 | if (mTextureClients.size() > sMinCacheSize) { |
| michael@0 | 86 | mTimer->InitWithFuncCallback(ShrinkCallback, this, sShrinkTimeout, |
| michael@0 | 87 | nsITimer::TYPE_ONE_SHOT); |
| michael@0 | 88 | } |
| michael@0 | 89 | } |
| michael@0 | 90 | |
| michael@0 | 91 | void |
| michael@0 | 92 | TextureClientPool::ReturnTextureClientDeferred(TextureClient *aClient) |
| michael@0 | 93 | { |
| michael@0 | 94 | mTextureClientsDeferred.push(aClient); |
| michael@0 | 95 | ShrinkToMaximumSize(); |
| michael@0 | 96 | } |
| michael@0 | 97 | |
| michael@0 | 98 | void |
| michael@0 | 99 | TextureClientPool::ShrinkToMaximumSize() |
| michael@0 | 100 | { |
| michael@0 | 101 | uint32_t totalClientsOutstanding = mTextureClients.size() + mOutstandingClients; |
| michael@0 | 102 | |
| michael@0 | 103 | // We're over our desired maximum size, immediately shrink down to the |
| michael@0 | 104 | // maximum, or zero if we have too many outstanding texture clients. |
| michael@0 | 105 | // We cull from the deferred TextureClients first, as we can't reuse those |
| michael@0 | 106 | // until they get returned. |
| michael@0 | 107 | while (totalClientsOutstanding > sMaxTextureClients) { |
| michael@0 | 108 | if (mTextureClientsDeferred.size()) { |
| michael@0 | 109 | mOutstandingClients--; |
| michael@0 | 110 | mTextureClientsDeferred.pop(); |
| michael@0 | 111 | } else { |
| michael@0 | 112 | if (!mTextureClients.size()) { |
| michael@0 | 113 | // Getting here means we're over our desired number of TextureClients |
| michael@0 | 114 | // with none in the pool. This can happen for pathological cases, or |
| michael@0 | 115 | // it could mean that sMaxTextureClients needs adjusting for whatever |
| michael@0 | 116 | // device we're running on. |
| michael@0 | 117 | break; |
| michael@0 | 118 | } |
| michael@0 | 119 | mTextureClients.pop(); |
| michael@0 | 120 | } |
| michael@0 | 121 | totalClientsOutstanding--; |
| michael@0 | 122 | } |
| michael@0 | 123 | } |
| michael@0 | 124 | |
| michael@0 | 125 | void |
| michael@0 | 126 | TextureClientPool::ShrinkToMinimumSize() |
| michael@0 | 127 | { |
| michael@0 | 128 | while (mTextureClients.size() > sMinCacheSize) { |
| michael@0 | 129 | mTextureClients.pop(); |
| michael@0 | 130 | } |
| michael@0 | 131 | } |
| michael@0 | 132 | |
| michael@0 | 133 | void |
| michael@0 | 134 | TextureClientPool::ReturnDeferredClients() |
| michael@0 | 135 | { |
| michael@0 | 136 | while (!mTextureClientsDeferred.empty()) { |
| michael@0 | 137 | ReturnTextureClient(mTextureClientsDeferred.top()); |
| michael@0 | 138 | mTextureClientsDeferred.pop(); |
| michael@0 | 139 | } |
| michael@0 | 140 | } |
| michael@0 | 141 | |
| michael@0 | 142 | void |
| michael@0 | 143 | TextureClientPool::Clear() |
| michael@0 | 144 | { |
| michael@0 | 145 | while (!mTextureClients.empty()) { |
| michael@0 | 146 | mTextureClients.pop(); |
| michael@0 | 147 | } |
| michael@0 | 148 | while (!mTextureClientsDeferred.empty()) { |
| michael@0 | 149 | mOutstandingClients--; |
| michael@0 | 150 | mTextureClientsDeferred.pop(); |
| michael@0 | 151 | } |
| michael@0 | 152 | } |
| michael@0 | 153 | |
| michael@0 | 154 | } |
| michael@0 | 155 | } |
