9f8022f2aa
The process-wide memory usage statistics of sqlite library is added to chrome://tracing. The memory usage of sqlite library is mainly through sqlite_malloc. The total usage of the process is recorded by sqlite3_memory_used() api. This CL also adds per-connection memory usage to tracing. Each connection uses memory for cache, schema and statement, and these usages are recorded. sqlit3_malloc uses malloc internally to allocate memory. So, thie memory is traced as sub-allocation from system_allocator(malloc). This CL lets us keep track of sqlite memory usage in chrome telemetry. BUG=466141 Review URL: https://codereview.chromium.org/1327063002 Cr-Commit-Position: refs/heads/master@{#353549}
63 lines
2.1 KiB
C++
63 lines
2.1 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/sql_memory_dump_provider.h"
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#include "base/trace_event/memory_dump_manager.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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// static
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SqlMemoryDumpProvider* SqlMemoryDumpProvider::GetInstance() {
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return base::Singleton<
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SqlMemoryDumpProvider,
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base::LeakySingletonTraits<SqlMemoryDumpProvider>>::get();
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}
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SqlMemoryDumpProvider::SqlMemoryDumpProvider() {}
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SqlMemoryDumpProvider::~SqlMemoryDumpProvider() {}
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bool SqlMemoryDumpProvider::OnMemoryDump(
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const base::trace_event::MemoryDumpArgs& args,
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base::trace_event::ProcessMemoryDump* pmd) {
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int memory_used = 0;
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int memory_high_water = 0;
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int status = sqlite3_status(SQLITE_STATUS_MEMORY_USED, &memory_used,
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&memory_high_water, 1 /*resetFlag */);
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if (status != SQLITE_OK)
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return false;
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base::trace_event::MemoryAllocatorDump* dump =
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pmd->CreateAllocatorDump("sqlite");
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dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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memory_used);
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dump->AddScalar("malloc_high_wmark_size",
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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memory_high_water);
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int dummy_high_water = -1;
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int malloc_count = -1;
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status = sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &malloc_count,
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&dummy_high_water, 0 /* resetFlag */);
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if (status == SQLITE_OK) {
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dump->AddScalar("malloc_count",
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base::trace_event::MemoryAllocatorDump::kUnitsObjects,
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malloc_count);
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}
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const char* system_allocator_name =
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base::trace_event::MemoryDumpManager::GetInstance()
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->system_allocator_pool_name();
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if (system_allocator_name) {
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pmd->AddSuballocation(dump->guid(), system_allocator_name);
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}
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return true;
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}
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} // namespace sql
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