cfbfa60d86
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}
107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sql/database_memory_dump_provider.h"
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#include <inttypes.h>
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#include "base/strings/stringprintf.h"
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#include "base/trace_event/process_memory_dump.h"
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#include "third_party/sqlite/sqlite3.h"
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namespace sql {
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DatabaseMemoryDumpProvider::DatabaseMemoryDumpProvider(sqlite3* db,
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const std::string& name)
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: db_(db), connection_name_(name) {}
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DatabaseMemoryDumpProvider::~DatabaseMemoryDumpProvider() = default;
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void DatabaseMemoryDumpProvider::ResetDatabase() {
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base::AutoLock lock(lock_);
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db_ = nullptr;
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}
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bool DatabaseMemoryDumpProvider::OnMemoryDump(
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const base::trace_event::MemoryDumpArgs& args,
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base::trace_event::ProcessMemoryDump* pmd) {
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if (args.level_of_detail == base::trace_event::MemoryDumpLevelOfDetail::LIGHT)
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return true;
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int cache_size = 0;
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int schema_size = 0;
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int statement_size = 0;
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if (!GetDbMemoryUsage(&cache_size, &schema_size, &statement_size)) {
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return false;
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}
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base::trace_event::MemoryAllocatorDump* dump =
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pmd->CreateAllocatorDump(FormatDumpName());
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dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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cache_size + schema_size + statement_size);
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dump->AddScalar("cache_size",
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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cache_size);
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dump->AddScalar("schema_size",
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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schema_size);
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dump->AddScalar("statement_size",
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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statement_size);
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return true;
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}
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bool DatabaseMemoryDumpProvider::ReportMemoryUsage(
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base::trace_event::ProcessMemoryDump* pmd,
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const std::string& dump_name) {
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int cache_size = 0;
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int schema_size = 0;
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int statement_size = 0;
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if (!GetDbMemoryUsage(&cache_size, &schema_size, &statement_size))
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return false;
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auto* mad = pmd->CreateAllocatorDump(dump_name);
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mad->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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cache_size + schema_size + statement_size);
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pmd->AddSuballocation(mad->guid(), FormatDumpName());
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return true;
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}
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bool DatabaseMemoryDumpProvider::GetDbMemoryUsage(int* cache_size,
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int* schema_size,
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int* statement_size) {
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// Lock is acquired here so that db_ is not reset in ResetDatabase when
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// collecting stats.
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base::AutoLock lock(lock_);
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if (!db_) {
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return false;
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}
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// The high water mark is not tracked for the following usages.
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int dummy_int;
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int status = sqlite3_db_status(db_, SQLITE_DBSTATUS_CACHE_USED, cache_size,
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&dummy_int, 0 /* resetFlag */);
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DCHECK_EQ(SQLITE_OK, status);
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status = sqlite3_db_status(db_, SQLITE_DBSTATUS_SCHEMA_USED, schema_size,
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&dummy_int, 0 /* resetFlag */);
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DCHECK_EQ(SQLITE_OK, status);
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status = sqlite3_db_status(db_, SQLITE_DBSTATUS_STMT_USED, statement_size,
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&dummy_int, 0 /* resetFlag */);
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DCHECK_EQ(SQLITE_OK, status);
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return true;
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}
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std::string DatabaseMemoryDumpProvider::FormatDumpName() const {
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return base::StringPrintf(
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"sqlite/%s_connection/0x%" PRIXPTR,
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connection_name_.empty() ? "Unknown" : connection_name_.c_str(),
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reinterpret_cast<uintptr_t>(this));
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}
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} // namespace sql
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