| // Copyright 2015 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SQL_SQL_MEMORY_DUMP_PROVIDER_H_ |
| #define SQL_SQL_MEMORY_DUMP_PROVIDER_H_ |
| |
| #include<cstdint> |
| |
| #include"base/component_export.h" |
| #include"base/memory/singleton.h" |
| #include"base/trace_event/memory_dump_provider.h" |
| |
| namespacebase::trace_event{ |
| structMemoryDumpArgs; |
| } |
| |
| namespace sql{ |
| |
| // Adds process-wide memory usage statistics about sqlite to chrome://tracing. |
| // sql::Database::OnMemoryDump adds per-connection memory statistics. |
| class COMPONENT_EXPORT(SQL)SqlMemoryDumpProvider |
| :publicbase::trace_event::MemoryDumpProvider{ |
| public: |
| staticSqlMemoryDumpProvider*GetInstance(); |
| |
| // Gets the memory used by SQLite, in bytes, and returns via return value. The |
| // high water usage (highest recorded usage) is returned via out-param if |
| // non-null. If `high_water` is non-null, the high water mark will also be |
| // reset afterwards. |
| staticint64_tGetMemoryUse(int64_t* high_water=nullptr); |
| |
| SqlMemoryDumpProvider(constSqlMemoryDumpProvider&)=delete; |
| SqlMemoryDumpProvider&operator=(constSqlMemoryDumpProvider&)=delete; |
| |
| // MemoryDumpProvider implementation. |
| boolOnMemoryDump(constbase::trace_event::MemoryDumpArgs& args, |
| base::trace_event::ProcessMemoryDump* pmd)override; |
| |
| private: |
| friendstructbase::DefaultSingletonTraits<SqlMemoryDumpProvider>; |
| |
| SqlMemoryDumpProvider(); |
| ~SqlMemoryDumpProvider()override; |
| }; |
| |
| }// namespace sql |
| |
| #endif// SQL_SQL_MEMORY_DUMP_PROVIDER_H_ |
