#define FAKE_TRY_DB_OP(op) do { \
	fakevfs_fprintf(stderr, "FAKE_TRY_DB_OP(%s)\n", #op); \
	db_status = (op); \
	switch (db_status) { \
		case DB_RUNRECOVERY: return FAKEVFS_ABORT; \
		case DB_LOCK_NOTGRANTED: case DB_LOCK_DEADLOCK: return FAKEVFS_RETRY; \
		default: break; \
	} \
} while (0)

#define FAKE_TRY_OPEN_OP(pointer, operation) do { \
        fakevfs_fprintf(stderr, "FAKE_TRY_OPEN_OP(%s, %s)\n", #pointer, #operation); \
	if (!(pointer)) { \
		FAKE_TRY_DB_OP(operation); \
	} \
} while (0)

#define FAKE_TRY_CLOSE_OP1(type, pointer, operation) do { \
        fakevfs_fprintf(stderr, "FAKE_TRY_CLOSE_OP1(%s, %s, %s)\n", #type, #pointer, #operation); \
	if (pointer) { \
		type *temp_pointer = (pointer); \
		(pointer) = 0; \
		FAKE_TRY_DB_OP(operation(temp_pointer)); \
	} \
} while (0)

#define FAKE_TRY_CLOSE_OP2(type, pointer, operation, arg2) do { \
        fakevfs_fprintf(stderr, "FAKE_TRY_CLOSE_OP2(%s, %s, %s, %s)\n", #type, #pointer, #operation, #arg2); \
	if (pointer) { \
		type *temp_pointer = (pointer); \
		(pointer) = 0; \
		FAKE_TRY_DB_OP(operation(temp_pointer, arg2)); \
	} \
} while (0)

#define FAKE_TRY_CURSOR_CLOSE(cursor) 		        FAKE_TRY_CLOSE_OP1(DBC,    cursor, temp_pointer->c_close)
#define FAKE_TRY_DB_CLOSE(db) 	    		        FAKE_TRY_CLOSE_OP2(DB,     db,     temp_pointer->close, 0)
#define FAKE_TRY_ENV_CLOSE(env)	    		        FAKE_TRY_CLOSE_OP2(DB_ENV, env,    temp_pointer->close, 0)

#define FAKE_TRY_TXN_BEGIN(env, txn_pointer, txn_flags) FAKE_TRY_OPEN_OP(txn_pointer, txn_begin(env, 0, &txn_pointer, txn_flags))
#define FAKE_TRY_TXN_ABORT(txn_pointer)                 FAKE_TRY_CLOSE_OP1(DB_TXN, txn_pointer, txn_abort)
#define FAKE_TRY_TXN_COMMIT(txn_pointer, txn_flags)     FAKE_TRY_CLOSE_OP2(DB_TXN, txn_pointer, txn_commit, txn_flags)

#define FAKE_TRY_CURSOR_OPEN(db_pointer, txn_pointer, cursor_pointer, flags) \
	FAKE_TRY_OPEN_OP(cursor_pointer, db_pointer->cursor(db_pointer, txn_pointer, &cursor_pointer, flags))

#define FAKE_TRY_DB_OPEN(db_pointer, env_pointer, db_name, db_type, db_flags) do { \
	FAKE_TRY_OPEN_OP(db_pointer, db_create(&db_pointer, env_pointer, 0)); \
	assert(db_pointer); \
	FAKE_TRY_DB_OP(db_pointer->set_flags(db_pointer, db_flags)); \
	FAKE_TRY_DB_OP(db_pointer->open(db_pointer, db_name, 0, db_type, DB_CREATE | DB_THREAD, 0)); \
} while (0)