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https://github.com/isc-projects/bind9.git
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eb4713c8e5
Mutex debugging code (used when the ISC_MUTEX_DEBUG preprocessor macro
is set to 1 and PTHREAD_MUTEX_ERRORCHECK is defined) has been broken for
the past 3 years (since commit 2f3eee5a4f)
and nobody complained, which is a strong indication that this code is
not being used these days any more. External tools for detecting
locking issues are already wired into various GitLab CI checks. Drop
all code depending on the ISC_MUTEX_DEBUG preprocessor macro being set.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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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, const char *file, unsigned int line) {
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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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if (err != 0) {
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char strbuf[ISC_STRERRORSIZE];
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strerror_r(err, strbuf, sizeof(strbuf));
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isc_error_fatal(file, line, "pthread_mutex_init failed: %s",
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strbuf);
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}
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}
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