mirror of
https://gitlab.isc.org/isc-projects/bind9
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3608abc8fa
In a number of situations in pthreads-related code, a common sequence of
steps is taken: if the value returned by a library function is not 0,
pass errno to strerror_r(), log the string returned by the latter, and
immediately abort execution. Add an ERRNO_CHECK() preprocessor macro
which takes those exact steps and use it wherever (conveniently)
possible.
Notes:
1. The "log the return value of strerror_r() and abort" pattern is used
in a number of other places that this commit does not touch; only
"!= 0" checks followed by isc_error_fatal() calls with
non-customized error messages are replaced here.
2. This change temporarily breaks file name & line number reporting for
isc__mutex_init() errors, to prevent breaking the build. This issue
will be rectified in a subsequent change.
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58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <time.h>
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#include <isc/mutex.h>
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#include <isc/once.h>
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#include <isc/print.h>
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#include <isc/strerr.h>
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#include <isc/string.h>
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#include <isc/util.h>
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#ifdef HAVE_PTHREAD_MUTEX_ADAPTIVE_NP
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static bool attr_initialized = false;
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static pthread_mutexattr_t attr;
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static isc_once_t once_attr = ISC_ONCE_INIT;
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static void
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initialize_attr(void) {
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RUNTIME_CHECK(pthread_mutexattr_init(&attr) == 0);
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RUNTIME_CHECK(pthread_mutexattr_settype(
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&attr, PTHREAD_MUTEX_ADAPTIVE_NP) == 0);
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attr_initialized = true;
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}
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#endif /* HAVE_PTHREAD_MUTEX_ADAPTIVE_NP */
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void
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isc__mutex_init(isc_mutex_t *mp) {
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int err;
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#ifdef HAVE_PTHREAD_MUTEX_ADAPTIVE_NP
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isc_result_t result = ISC_R_SUCCESS;
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result = isc_once_do(&once_attr, initialize_attr);
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RUNTIME_CHECK(result == ISC_R_SUCCESS);
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err = pthread_mutex_init(mp, &attr);
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#else /* HAVE_PTHREAD_MUTEX_ADAPTIVE_NP */
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err = pthread_mutex_init(mp, NULL);
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#endif /* HAVE_PTHREAD_MUTEX_ADAPTIVE_NP */
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ERRNO_CHECK(pthread_mutex_init, err);
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}
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