| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include"sql/initialization.h" |
| |
| #include"base/no_destructor.h" |
| #include"base/synchronization/lock.h" |
| #include"base/trace_event/trace_event.h" |
| #include"sql/vfs_wrapper.h" |
| #include"third_party/sqlite/sqlite3.h" |
| |
| namespace sql{ |
| |
| voidEnsureSqliteInitialized(bool create_wrapper){ |
| // sqlite3_initialize() uses double-checked locking and thus can have |
| // data races. |
| static base::NoDestructor<base::Lock> sqlite_init_lock; |
| base::AutoLock auto_lock(*sqlite_init_lock); |
| |
| staticbool first_call=true; |
| if(first_call){ |
| TRACE_EVENT0("sql","EnsureSqliteInitialized"); |
| sqlite3_initialize(); |
| first_call=false; |
| } |
| |
| if(create_wrapper){ |
| EnsureVfsWrapper(); |
| } |
| } |
| |
| }// namespace sql |
