0
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src/sql/database_memory_dump_provider.h
Victor Costan cfbfa60d86 sql: Rename sql::Connection to sql::Database.
sql::Connection represents an opened SQLite database. Pedantically, the
name is correct. At the same time, it is inconsistent with the naming
convention of similar software -- IndexedDB, LevelDB, and WebSQL all use
a derivative of "Database" (IDBDatabase, DB, WindowDatabase) to name
this concept. Furthermore, most sql::Connection instances have names
like "db" and "database".

This CL renames the class to sql::Database, reducing the cognitive load
caused by dissonances like "sql::Connection db_".

TBR=mpearson

Bug: none
Change-Id: I8abf34016bca236b6e38a772f5848e7ea9bf1c59
Reviewed-on: https://chromium-review.googlesource.com/1157876
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579990}
2018-08-01 23:24:46 +00:00

57 lines
1.5 KiB
C++

// Copyright 2015 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.
#ifndef SQL_DATABASE_MEMORY_DUMP_PROVIDER_H_
#define SQL_DATABASE_MEMORY_DUMP_PROVIDER_H_
#include <string>
#include "base/macros.h"
#include "base/synchronization/lock.h"
#include "base/trace_event/memory_dump_provider.h"
struct sqlite3;
namespace base {
namespace trace_event {
class ProcessMemoryDump;
}
} // namespace base
namespace sql {
class DatabaseMemoryDumpProvider
: public base::trace_event::MemoryDumpProvider {
public:
DatabaseMemoryDumpProvider(sqlite3* db, const std::string& name);
~DatabaseMemoryDumpProvider() override;
void ResetDatabase();
// base::trace_event::MemoryDumpProvider implementation.
bool OnMemoryDump(
const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* process_memory_dump) override;
// Reports memory usage into provided memory dump with the given |dump_name|.
// Called by sql::Database when its owner asks it to report memory usage.
bool ReportMemoryUsage(base::trace_event::ProcessMemoryDump* pmd,
const std::string& dump_name);
private:
bool GetDbMemoryUsage(int* cache_size, int* schema_size, int* statement_size);
std::string FormatDumpName() const;
sqlite3* db_; // not owned.
base::Lock lock_;
std::string connection_name_;
DISALLOW_COPY_AND_ASSIGN(DatabaseMemoryDumpProvider);
};
} // namespace sql
#endif // SQL_DATABASE_MEMORY_DUMP_PROVIDER_H_