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/* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifdef SAFE_MUTEX
#include "thr_cond.h"
#include "my_thread_local.h"
int safe_cond_wait(native_cond_t *cond, my_mutex_t *mp,
const char *file, uint line)
{
int error;
native_mutex_lock(&mp->global);
if (mp->count == 0)
{
fprintf(stderr,"safe_mutex: Trying to cond_wait on a unlocked mutex at %s, line %d\n",file,line);
fflush(stderr);
abort();
}
if (!my_thread_equal(my_thread_self(),mp->thread))
{
fprintf(stderr,"safe_mutex: Trying to cond_wait on a mutex at %s, line %d that was locked by another thread at: %s, line: %d\n",
file,line,mp->file,mp->line);
fflush(stderr);
abort();
}
if (mp->count-- != 1)
{
fprintf(stderr,"safe_mutex: Count was %d on locked mutex at %s, line %d\n",
mp->count+1, file, line);
fflush(stderr);
abort();
}
native_mutex_unlock(&mp->global);
error= native_cond_wait(cond,&mp->mutex);
native_mutex_lock(&mp->global);
if (error)
{
fprintf(stderr,"safe_mutex: Got error: %d (%d) when doing a safe_mutex_wait at %s, line %d\n", error, errno, file, line);
fflush(stderr);
abort();
}
mp->thread= my_thread_self();
if (mp->count++)
{
#ifndef DBUG_OFF
fprintf(stderr,
"safe_mutex: Count was %d in thread 0x%x when locking mutex at %s, line %d\n",
mp->count-1, my_thread_var_id(), file, line);
fflush(stderr);
#endif
abort();
}
mp->file= file;
mp->line=line;
native_mutex_unlock(&mp->global);
return error;
}
int safe_cond_timedwait(native_cond_t *cond, my_mutex_t *mp,
const struct timespec *abstime,
const char *file, uint line)
{
int error;
native_mutex_lock(&mp->global);
if (mp->count != 1 || !my_thread_equal(my_thread_self(),mp->thread))
{
fprintf(stderr,"safe_mutex: Trying to cond_wait at %s, line %d on a not hold mutex\n",file,line);
fflush(stderr);
abort();
}
mp->count--; /* Mutex will be released */
native_mutex_unlock(&mp->global);
error= native_cond_timedwait(cond,&mp->mutex,abstime);
#ifdef EXTRA_DEBUG
if (error && (error != EINTR && error != ETIMEDOUT && error != ETIME))
{
fprintf(stderr,"safe_mutex: Got error: %d (%d) when doing a safe_cond_timedwait at %s, line %d\n", error, errno, file, line);
}
#endif
native_mutex_lock(&mp->global);
mp->thread= my_thread_self();
if (mp->count++)
{
#ifndef DBUG_OFF
fprintf(stderr,
"safe_mutex: Count was %d in thread 0x%x when locking mutex at %s, line %d (error: %d (%d))\n",
mp->count-1, my_thread_var_id(), file, line, error, error);
fflush(stderr);
#endif
abort();
}
mp->file= file;
mp->line=line;
native_mutex_unlock(&mp->global);
return error;
}
#endif
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