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-rw-r--r--contrib/bind9/lib/isc/pthreads/mutex.c270
1 files changed, 0 insertions, 270 deletions
diff --git a/contrib/bind9/lib/isc/pthreads/mutex.c b/contrib/bind9/lib/isc/pthreads/mutex.c
deleted file mode 100644
index 7716980..0000000
--- a/contrib/bind9/lib/isc/pthreads/mutex.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000-2002 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-/* $Id: mutex.c,v 1.8.18.4 2005/07/12 01:22:32 marka Exp $ */
-
-/*! \file */
-
-#include <config.h>
-
-#include <stdio.h>
-#include <time.h>
-#include <sys/time.h>
-#include <errno.h>
-
-#include <isc/mutex.h>
-#include <isc/util.h>
-#include <isc/strerror.h>
-
-#if ISC_MUTEX_PROFILE
-
-/*@{*/
-/*% Operations on timevals; adapted from FreeBSD's sys/time.h */
-#define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
-#define timevaladd(vvp, uvp) \
- do { \
- (vvp)->tv_sec += (uvp)->tv_sec; \
- (vvp)->tv_usec += (uvp)->tv_usec; \
- if ((vvp)->tv_usec >= 1000000) { \
- (vvp)->tv_sec++; \
- (vvp)->tv_usec -= 1000000; \
- } \
- } while (0)
-#define timevalsub(vvp, uvp) \
- do { \
- (vvp)->tv_sec -= (uvp)->tv_sec; \
- (vvp)->tv_usec -= (uvp)->tv_usec; \
- if ((vvp)->tv_usec < 0) { \
- (vvp)->tv_sec--; \
- (vvp)->tv_usec += 1000000; \
- } \
- } while (0)
-
-/*@}*/
-
-#define ISC_MUTEX_MAX_LOCKERS 32
-
-typedef struct {
- const char * file;
- int line;
- unsigned count;
- struct timeval locked_total;
- struct timeval wait_total;
-} isc_mutexlocker_t;
-
-struct isc_mutexstats {
- const char * file; /*%< File mutex was created in. */
- int line; /*%< Line mutex was created on. */
- unsigned count;
- struct timeval lock_t;
- struct timeval locked_total;
- struct timeval wait_total;
- isc_mutexlocker_t * cur_locker;
- isc_mutexlocker_t lockers[ISC_MUTEX_MAX_LOCKERS];
-};
-
-#define TABLESIZE (8 * 1024)
-static isc_mutexstats_t stats[TABLESIZE];
-static isc_boolean_t stats_init = ISC_FALSE;
-static pthread_mutex_t statslock = PTHREAD_MUTEX_INITIALIZER;
-
-
-isc_result_t
-isc_mutex_init_profile(isc_mutex_t *mp, const char *file, int line) {
- int i, err;
-
- err = pthread_mutex_init(&mp->mutex, NULL);
- if (err == ENOMEM)
- return (ISC_R_NOMEMORY);
- if (err != 0)
- return (ISC_R_UNEXPECTED);
-
- RUNTIME_CHECK(pthread_mutex_lock(&statslock) == 0);
-
- if (stats_init == ISC_FALSE) {
- for (i = 0; i < TABLESIZE; i++) {
- stats[i].file = NULL;
- }
- stats_init = ISC_TRUE;
- }
-
- mp->stats = NULL;
- for (i = 0; i < TABLESIZE; i++) {
- if (stats[i].file == NULL) {
- mp->stats = &stats[i];
- break;
- }
- }
- RUNTIME_CHECK(mp->stats != NULL);
-
- RUNTIME_CHECK(pthread_mutex_unlock(&statslock) == 0);
-
- mp->stats->file = file;
- mp->stats->line = line;
- mp->stats->count = 0;
- timevalclear(&mp->stats->locked_total);
- timevalclear(&mp->stats->wait_total);
- for (i = 0; i < ISC_MUTEX_MAX_LOCKERS; i++) {
- mp->stats->lockers[i].file = NULL;
- mp->stats->lockers[i].line = 0;
- mp->stats->lockers[i].count = 0;
- timevalclear(&mp->stats->lockers[i].locked_total);
- timevalclear(&mp->stats->lockers[i].wait_total);
- }
-
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isc_mutex_lock_profile(isc_mutex_t *mp, const char *file, int line) {
- struct timeval prelock_t;
- struct timeval postlock_t;
- isc_mutexlocker_t *locker = NULL;
- int i;
-
- gettimeofday(&prelock_t, NULL);
-
- if (pthread_mutex_lock(&mp->mutex) != 0)
- return (ISC_R_UNEXPECTED);
-
- gettimeofday(&postlock_t, NULL);
- mp->stats->lock_t = postlock_t;
-
- timevalsub(&postlock_t, &prelock_t);
-
- mp->stats->count++;
- timevaladd(&mp->stats->wait_total, &postlock_t);
-
- for (i = 0; i < ISC_MUTEX_MAX_LOCKERS; i++) {
- if (mp->stats->lockers[i].file == NULL) {
- locker = &mp->stats->lockers[i];
- locker->file = file;
- locker->line = line;
- break;
- } else if (mp->stats->lockers[i].file == file &&
- mp->stats->lockers[i].line == line) {
- locker = &mp->stats->lockers[i];
- break;
- }
- }
-
- if (locker != NULL) {
- locker->count++;
- timevaladd(&locker->wait_total, &postlock_t);
- }
-
- mp->stats->cur_locker = locker;
-
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isc_mutex_unlock_profile(isc_mutex_t *mp, const char *file, int line) {
- struct timeval unlock_t;
-
- UNUSED(file);
- UNUSED(line);
-
- if (mp->stats->cur_locker != NULL) {
- gettimeofday(&unlock_t, NULL);
- timevalsub(&unlock_t, &mp->stats->lock_t);
- timevaladd(&mp->stats->locked_total, &unlock_t);
- timevaladd(&mp->stats->cur_locker->locked_total, &unlock_t);
- mp->stats->cur_locker = NULL;
- }
-
- return ((pthread_mutex_unlock((&mp->mutex)) == 0) ? \
- ISC_R_SUCCESS : ISC_R_UNEXPECTED);
-}
-
-
-void
-isc_mutex_statsprofile(FILE *fp) {
- isc_mutexlocker_t *locker;
- int i, j;
- fprintf(fp, "Mutex stats (in us)\n");
- for (i = 0; i < TABLESIZE; i++) {
- if (stats[i].file == NULL)
- continue;
- fprintf(fp, "%-12s %4d: %10u %lu.%06lu %lu.%06lu\n",
- stats[i].file, stats[i].line, stats[i].count,
- stats[i].locked_total.tv_sec,
- stats[i].locked_total.tv_usec,
- stats[i].wait_total.tv_sec,
- stats[i].wait_total.tv_usec
- );
- for (j = 0; j < ISC_MUTEX_MAX_LOCKERS; j++) {
- locker = &stats[i].lockers[j];
- if (locker->file == NULL)
- continue;
- fprintf(fp, " %-11s %4d: %10u %lu.%06lu %lu.%06lu\n",
- locker->file, locker->line, locker->count,
- locker->locked_total.tv_sec,
- locker->locked_total.tv_usec,
- locker->wait_total.tv_sec,
- locker->wait_total.tv_usec
- );
- }
- }
-}
-
-#endif /* ISC_MUTEX_PROFILE */
-
-#if ISC_MUTEX_DEBUG && defined(PTHREAD_MUTEX_ERRORCHECK)
-isc_result_t
-isc_mutex_init_errcheck(isc_mutex_t *mp)
-{
- pthread_mutexattr_t attr;
- int err;
-
- if (pthread_mutexattr_init(&attr) != 0)
- return (ISC_R_UNEXPECTED);
-
- if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK) != 0)
- return (ISC_R_UNEXPECTED);
-
- err = pthread_mutex_init(mp, &attr) != 0)
- if (err == ENOMEM)
- return (ISC_R_NOMEMORY);
- return ((err == 0) ? ISC_R_SUCCESS : ISC_R_UNEXPECTED);
-}
-#endif
-
-#if ISC_MUTEX_DEBUG && defined(__NetBSD__) && defined(PTHREAD_MUTEX_ERRORCHECK)
-pthread_mutexattr_t isc__mutex_attrs = {
- PTHREAD_MUTEX_ERRORCHECK, /* m_type */
- 0 /* m_flags, which appears to be unused. */
-};
-#endif
-
-isc_result_t
-isc__mutex_init(isc_mutex_t *mp, const char *file, unsigned int line) {
- char strbuf[ISC_STRERRORSIZE];
- isc_result_t result = ISC_R_SUCCESS;
- int err;
-
- err = pthread_mutex_init(mp, ISC__MUTEX_ATTRS);
- if (err == ENOMEM)
- return (ISC_R_NOMEMORY);
- if (err != 0) {
- isc__strerror(errno, strbuf, sizeof(strbuf));
- UNEXPECTED_ERROR(file, line, "isc_mutex_init() failed: %s",
- strbuf);
- result = ISC_R_UNEXPECTED;
- }
- return (result);
-}
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