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Diffstat (limited to 'lib/isc/include/isc/once.h')
-rw-r--r-- | lib/isc/include/isc/once.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/isc/include/isc/once.h b/lib/isc/include/isc/once.h new file mode 100644 index 0000000..7d341ca --- /dev/null +++ b/lib/isc/include/isc/once.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +#pragma once + +/*! \file */ + +#include <pthread.h> + +#include <isc/result.h> + +typedef pthread_once_t isc_once_t; + +#define ISC_ONCE_INIT PTHREAD_ONCE_INIT + +/* XXX We could do fancier error handling... */ + +#define isc_once_do(op, f) \ + ((pthread_once((op), (f)) == 0) ? ISC_R_SUCCESS : ISC_R_UNEXPECTED) |