Index: base/memory/discardable_memory.cc |
diff --git a/base/memory/discardable_memory.cc b/base/memory/discardable_memory.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..dcecc0f665ebbd256f49fb64d1412ea756dde01f |
--- /dev/null |
+++ b/base/memory/discardable_memory.cc |
@@ -0,0 +1,66 @@ |
+// Copyright 2013 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 "base/memory/discardable_memory.h" |
+ |
+#include "base/lazy_instance.h" |
+ |
+namespace base { |
+namespace { |
+ |
+const struct { |
+ const char* name; |
+ DiscardableMemoryType type; |
+} kTypeNamePairs[] = { |
+ { "android", DISCARDABLE_MEMORY_TYPE_ANDROID }, |
+ { "mac", DISCARDABLE_MEMORY_TYPE_MAC }, |
+ { "emulated", DISCARDABLE_MEMORY_TYPE_EMULATED } |
+}; |
+ |
+struct TypeInitializedWithPreferredValue { |
+ TypeInitializedWithPreferredValue() : value(DISCARDABLE_MEMORY_TYPE_NONE) { |
+ std::vector<DiscardableMemoryType> supported_types; |
+ DiscardableMemory::GetSupportedTypes(&supported_types); |
+ DCHECK(!supported_types.empty()); |
+ value = supported_types[0]; |
+ } |
+ DiscardableMemoryType value; |
+}; |
+LazyInstance<TypeInitializedWithPreferredValue>::Leaky |
+ g_discardable_memory_type = LAZY_INSTANCE_INITIALIZER; |
+ |
+} // namespace |
+ |
+// static |
+DiscardableMemoryType DiscardableMemory::GetNamedType( |
+ const std::string& name) { |
+ for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTypeNamePairs); ++i) { |
willchan no longer on Chromium
2013/12/24 01:21:06
I don't think you need to use the unsafe version o
reveman
2013/12/26 11:46:08
Done. After after giving the array type a name.
|
+ if (name == kTypeNamePairs[i].name) |
+ return kTypeNamePairs[i].type; |
+ } |
+ |
+ return DISCARDABLE_MEMORY_TYPE_NONE; |
+} |
+ |
+// static |
+const char* DiscardableMemory::GetTypeName(DiscardableMemoryType type) { |
+ for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTypeNamePairs); ++i) { |
willchan no longer on Chromium
2013/12/24 01:21:06
ditto...i think you can switch to arraysize()
reveman
2013/12/26 11:46:08
Done.
|
+ if (type == kTypeNamePairs[i].type) |
+ return kTypeNamePairs[i].name; |
+ } |
+ |
+ return "unknown"; |
+} |
+ |
+// static |
+void DiscardableMemory::SetType(DiscardableMemoryType type) { |
+ g_discardable_memory_type.Get().value = type; |
willchan no longer on Chromium
2013/12/24 01:21:06
This looks racy to me. If this is only allowed to
reveman
2013/12/26 11:46:08
Unit tests depend on being able to change this at
willchan no longer on Chromium
2013/12/26 18:25:54
Are there any valid reasons for non-test clients t
reveman
2013/12/26 21:53:35
Not at this point.
|
+} |
+ |
+// static |
+DiscardableMemoryType DiscardableMemory::GetType() { |
+ return g_discardable_memory_type.Get().value; |
+} |
+ |
+} // namespace base |