diff options
Diffstat (limited to 'src/wallet/sqlite.h')
-rw-r--r-- | src/wallet/sqlite.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/wallet/sqlite.h b/src/wallet/sqlite.h index 47b7ebb0ec..d7135679ff 100644 --- a/src/wallet/sqlite.h +++ b/src/wallet/sqlite.h @@ -5,6 +5,7 @@ #ifndef BITCOIN_WALLET_SQLITE_H #define BITCOIN_WALLET_SQLITE_H +#include <sync.h> #include <wallet/db.h> #include <sqlite3.h> @@ -63,7 +64,16 @@ private: const std::string m_file_path; - void Cleanup() noexcept; + /** + * This mutex protects SQLite initialization and shutdown. + * sqlite3_config() and sqlite3_shutdown() are not thread-safe (sqlite3_initialize() is). + * Concurrent threads that execute SQLiteDatabase::SQLiteDatabase() should have just one + * of them do the init and the rest wait for it to complete before all can proceed. + */ + static Mutex g_sqlite_mutex; + static int g_sqlite_count GUARDED_BY(g_sqlite_mutex); + + void Cleanup() noexcept EXCLUSIVE_LOCKS_REQUIRED(!g_sqlite_mutex); public: SQLiteDatabase() = delete; |