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Unified Diff: blimp/common/compositor/blimp_picture_cache_registry.cc

Issue 1982893002: [blimp] Add SkPicture caching support. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: git merge origin/master Created 4 years, 7 months ago
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Index: blimp/common/compositor/blimp_picture_cache_registry.cc
diff --git a/blimp/common/compositor/blimp_picture_cache_registry.cc b/blimp/common/compositor/blimp_picture_cache_registry.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2a75f0779e31b0e2127292ff673fb7fa2abc00e8
--- /dev/null
+++ b/blimp/common/compositor/blimp_picture_cache_registry.cc
@@ -0,0 +1,53 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "blimp/common/compositor/blimp_picture_cache_registry.h"
+
+#include <stdint.h>
+#include <map>
+#include <set>
+#include <vector>
+
+#include "base/logging.h"
+
+namespace blimp {
+
+BlimpPictureCacheRegistry::BlimpPictureCacheRegistry() {}
+
+BlimpPictureCacheRegistry::~BlimpPictureCacheRegistry() {}
+
+void BlimpPictureCacheRegistry::IncrementRefCount(uint32_t item) {
+ ++used_item_ref_counts_[item];
+}
+
+void BlimpPictureCacheRegistry::DecrementRefCount(uint32_t item) {
+ DCHECK_GT(used_item_ref_counts_[item], 0U);
vmpstr 2016/06/01 00:10:56 nit: lowercase u
nyquist 2016/06/04 00:24:57 Done.
+ --used_item_ref_counts_[item];
+}
+
+void BlimpPictureCacheRegistry::Commit(std::vector<uint32_t>* added_entries,
+ std::vector<uint32_t>* removed_entries) {
+ for (auto it = used_item_ref_counts_.begin();
+ it != used_item_ref_counts_.end();) {
+ uint32_t key = it->first;
+ uint32_t ref_count = it->second;
+ bool is_committed = committed_.find(key) != committed_.end();
vmpstr 2016/06/01 00:10:56 committed_.count(key) > 0;
nyquist 2016/06/04 00:24:57 Done.
+ if (ref_count > 0U) {
vmpstr 2016/06/01 00:10:56 nit: same here.
nyquist 2016/06/04 00:24:57 Done.
+ if (!is_committed) {
+ committed_.insert(key);
+ added_entries->push_back(key);
+ }
+ ++it;
+ } else {
+ if (is_committed) {
+ committed_.erase(key);
+ removed_entries->push_back(key);
+ }
+ // The entry has no references, so should not be staged anymore.
+ it = used_item_ref_counts_.erase(it);
+ }
+ }
+}
+
+} // namespace blimp

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