| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #ifndef SkInstCnt_DEFINED |
| #define SkInstCnt_DEFINED |
| |
| /* |
| * The instance counting system consists of three macros that create the |
| * instance counting machinery. A class is added to the system by adding: |
| * SK_DECLARE_INST_COUNT at the top of its declaration for derived classes |
| * SK_DECLARE_INST_COUNT_ROOT at the top of its declaration for a root class |
| * SK_DEFINE_INST_COUNT at the top of its .cpp file (for both kinds). |
| * At the end of an application a call to all the "root" objects' |
| * CheckInstanceCount methods should be made |
| */ |
| #ifdef SK_ENABLE_INST_COUNT |
| #include "SkTArray.h" |
| |
| extern bool gPrintInstCount; |
| |
| #define SK_DECLARE_INST_COUNT(className) \ |
| SK_DECLARE_INST_COUNT_INTERNAL(className, \ |
| INHERITED::AddInstChild(CheckInstanceCount);) |
| |
| #define SK_DECLARE_INST_COUNT_ROOT(className) \ |
| SK_DECLARE_INST_COUNT_INTERNAL(className, ;) |
| |
| #define SK_DECLARE_INST_COUNT_INTERNAL(className, initStep) \ |
| class SkInstanceCountHelper { \ |
| public: \ |
| typedef int (*PFCheckInstCnt)(int level); \ |
| SkInstanceCountHelper() { \ |
| if (!gInited) { \ |
| initStep \ |
| gInited = true; \ |
| } \ |
| gInstanceCount++; \ |
| } \ |
| \ |
| SkInstanceCountHelper(const SkInstanceCountHelper& other) { \ |
| gInstanceCount++; \ |
| } \ |
| \ |
| ~SkInstanceCountHelper() { \ |
| gInstanceCount--; \ |
| } \ |
| \ |
| static int32_t gInstanceCount; \ |
| static bool gInited; \ |
| static SkTArray<PFCheckInstCnt> gChildren; \ |
| } fInstanceCountHelper; \ |
| \ |
| static int32_t GetInstanceCount() { \ |
| return SkInstanceCountHelper::gInstanceCount; \ |
| } \ |
| \ |
| static int CheckInstanceCount(int level = 0) { \ |
| if (gPrintInstCount && 0 != SkInstanceCountHelper::gInstanceCount) {\ |
| SkDebugf("%*c Leaked %s: %d\n", \ |
| 4*level, ' ', #className, \ |
| SkInstanceCountHelper::gInstanceCount); \ |
| } \ |
| int childCount = SkInstanceCountHelper::gChildren.count(); \ |
| int count = SkInstanceCountHelper::gInstanceCount; \ |
| for (int i = 0; i < childCount; ++i) { \ |
| count -= (*SkInstanceCountHelper::gChildren[i])(level+1); \ |
| } \ |
| SkASSERT(count >= 0); \ |
| if (gPrintInstCount && childCount > 0 && count > 0) { \ |
| SkDebugf("%*c Leaked ???: %d\n", 4*(level + 1), ' ', count); \ |
| } \ |
| return SkInstanceCountHelper::gInstanceCount; \ |
| } \ |
| \ |
| static void AddInstChild(SkInstanceCountHelper::PFCheckInstCnt \ |
| childCheckInstCnt) { \ |
| if (CheckInstanceCount != childCheckInstCnt) { \ |
| SkInstanceCountHelper::gChildren.push_back(childCheckInstCnt); \ |
| } \ |
| } |
| |
| #define SK_DEFINE_INST_COUNT(className) \ |
| int32_t className::SkInstanceCountHelper::gInstanceCount = 0; \ |
| bool className::SkInstanceCountHelper::gInited = false; \ |
| SkTArray<className::SkInstanceCountHelper::PFCheckInstCnt> \ |
| className::SkInstanceCountHelper::gChildren; |
| |
| #else |
| #define SK_DECLARE_INST_COUNT(className) |
| #define SK_DECLARE_INST_COUNT_ROOT(className) |
| #define SK_DEFINE_INST_COUNT(className) |
| #endif |
| |
| #endif // SkInstCnt_DEFINED |