/*
* Get server data and make sure there is a continuation response inside them.
*/
int
response_continuation(session *ssn, int tag)
{
int r;
ssize_t n;
buffer_reset(&ibuf);
do {
buffer_check(&ibuf, ibuf.len + INPUT_BUF);
if ((n = receive_response(ssn, ibuf.data + ibuf.len, 0, 1)) ==
-1)
return -1;
ibuf.len += n;
if (check_bye(ibuf.data))
return STATUS_BYE;
} while ((r = check_tag(ibuf.data, ssn, tag)) == STATUS_NONE &&
!check_continuation(ibuf.data));
if (r == STATUS_NO &&
(check_trycreate(ibuf.data) || get_option_boolean("create")))
return STATUS_TRYCREATE;
if (r == STATUS_NONE)
return STATUS_CONTINUE;
return r;
}
void read_parameter_file ( char *filename )
{
FILE *f;
char buffer[MAXPARAMLINELENGTH+1];
char *buf2;
int buf2size;
int line = 0;
int errors = 0;
int including = 1;
int flag;
int buflen, buf2len;
int cont;
/** open it. **/
f = fopen ( filename, "r" );
if ( f == NULL )
fprintf( stderr , "\ncan't open parameter file \"%s\".",
filename );
/** lines are read into buffer. they are appended to buf2 until a
line which is not continued is hit, then buf2 is parsed and the
parameter added. **/
/* initial allocation of buf2. */
buf2 = (char *)malloc ( MAXPARAMLINELENGTH * sizeof ( char ) );
buf2size = MAXPARAMLINELENGTH;
buf2[0] = 0;
buf2len = 0;
cont = 0;
while ( fgets ( buffer, MAXPARAMLINELENGTH, f ) != NULL )
{
++line;
/* remove comments, skip line if it's blank after comment
removal. */
if ( delete_comment ( buffer ) )
continue;
/* is this line continued? (is the last nonwhitespace character
a backslash?) */
cont = check_continuation ( buffer );
/** make buf2 bigger if necessary. **/
buflen = strlen ( buffer );
while ( buf2len + buflen > buf2size + 10 )
{
buf2size += MAXPARAMLINELENGTH;
buf2 = (char *)realloc ( buf2, buf2size * sizeof ( char ) );
}
/** tack the current line onto buf2. **/
strcat ( buf2, buffer );
buf2len += buflen;
/** if this line is not continued further, then parse buf2. and
add the parameter. **/
if ( !cont )
{
if ( parse_one_parameter ( buf2 ))
{
errors = 1;
fprintf( stderr , "\n%s line %d: syntax error.",
filename, line );
}
/** reset buf2 as empty. **/
buf2len = 0;
buf2[0] = 0;
}
}
/* close file. */
fclose ( f );
/** if the last line was continued, and nothing followed it, that's
an error. **/
if ( buf2len != 0 )
{
errors = 1;
fprintf( stderr , "\nunexpected EOF." );
}
/** if any errors occurred during parsing, stop now. **/
if ( errors )
{
fprintf( stderr ,
"\nsome syntax errors occurred parsing \"%s\".", filename );
free( buf2 );
exit(1);
}
free ( buf2 );
}
int
_pthread_cond_timedwait(pthread_cond_t * cond, pthread_mutex_t * mutex,
const struct timespec * abstime)
{
struct pthread *curthread = _get_curthread();
int rval = 0;
int done = 0;
int mutex_locked = 1;
int seqno;
THR_ASSERT(curthread->locklevel == 0,
"cv_timedwait: locklevel is not zero!");
if (abstime == NULL || abstime->tv_sec < 0 || abstime->tv_nsec < 0 ||
abstime->tv_nsec >= 1000000000)
return (EINVAL);
/*
* If the condition variable is statically initialized, perform dynamic
* initialization.
*/
if (*cond == NULL && (rval = _pthread_cond_init(cond, NULL)) != 0)
return (rval);
if (!_kse_isthreaded())
_kse_setthreaded(1);
/*
* Enter a loop waiting for a condition signal or broadcast
* to wake up this thread. A loop is needed in case the waiting
* thread is interrupted by a signal to execute a signal handler.
* It is not (currently) possible to remain in the waiting queue
* while running a handler. Instead, the thread is interrupted
* and backed out of the waiting queue prior to executing the
* signal handler.
*/
/* Lock the condition variable structure: */
THR_LOCK_ACQUIRE(curthread, &(*cond)->c_lock);
seqno = (*cond)->c_seqno;
do {
/*
* If the condvar was statically allocated, properly
* initialize the tail queue.
*/
if (((*cond)->c_flags & COND_FLAGS_INITED) == 0) {
TAILQ_INIT(&(*cond)->c_queue);
(*cond)->c_flags |= COND_FLAGS_INITED;
}
/* Process according to condition variable type: */
switch ((*cond)->c_type) {
/* Fast condition variable: */
case COND_TYPE_FAST:
if ((mutex == NULL) || (((*cond)->c_mutex != NULL) &&
((*cond)->c_mutex != *mutex))) {
/* Return invalid argument error: */
rval = EINVAL;
} else {
/* Reset the timeout and interrupted flags: */
curthread->timeout = 0;
curthread->interrupted = 0;
/*
* Queue the running thread for the condition
* variable:
*/
cond_queue_enq(*cond, curthread);
/* Unlock the mutex: */
if (mutex_locked &&
((rval = _mutex_cv_unlock(mutex)) != 0)) {
/*
* Cannot unlock the mutex; remove the
* running thread from the condition
* variable queue:
*/
cond_queue_remove(*cond, curthread);
} else {
/* Remember the mutex: */
(*cond)->c_mutex = *mutex;
/*
* Don't unlock the mutex the next
* time through the loop (if the
* thread has to be requeued after
* handling a signal).
*/
mutex_locked = 0;
/*
* This thread is active and is in a
* critical region (holding the cv
* lock); we should be able to safely
* set the state.
*/
THR_SCHED_LOCK(curthread, curthread);
/* Set the wakeup time: */
curthread->wakeup_time.tv_sec =
abstime->tv_sec;
curthread->wakeup_time.tv_nsec =
abstime->tv_nsec;
THR_SET_STATE(curthread, PS_COND_WAIT);
/* Remember the CV: */
curthread->data.cond = *cond;
curthread->sigbackout = cond_wait_backout;
THR_SCHED_UNLOCK(curthread, curthread);
/* Unlock the CV structure: */
THR_LOCK_RELEASE(curthread,
&(*cond)->c_lock);
/* Schedule the next thread: */
_thr_sched_switch(curthread);
/*
* XXX - This really isn't a good check
* since there can be more than one
* thread waiting on the CV. Signals
* sent to threads waiting on mutexes
* or CVs should really be deferred
* until the threads are no longer
* waiting, but POSIX says that signals
* should be sent "as soon as possible".
*/
done = (seqno != (*cond)->c_seqno);
if (done && !THR_IN_CONDQ(curthread)) {
/*
* The thread is dequeued, so
* it is safe to clear these.
*/
curthread->data.cond = NULL;
curthread->sigbackout = NULL;
check_continuation(curthread,
NULL, mutex);
return (_mutex_cv_lock(mutex));
}
/* Relock the CV structure: */
THR_LOCK_ACQUIRE(curthread,
&(*cond)->c_lock);
/*
* Clear these after taking the lock to
* prevent a race condition where a
* signal can arrive before dequeueing
* the thread.
*/
curthread->data.cond = NULL;
curthread->sigbackout = NULL;
done = (seqno != (*cond)->c_seqno);
if (THR_IN_CONDQ(curthread)) {
cond_queue_remove(*cond,
curthread);
/* Check for no more waiters: */
if (TAILQ_EMPTY(&(*cond)->c_queue))
(*cond)->c_mutex = NULL;
}
if (curthread->timeout != 0) {
/* The wait timedout. */
rval = ETIMEDOUT;
}
}
}
break;
/* Trap invalid condition variable types: */
default:
/* Return an invalid argument error: */
rval = EINVAL;
break;
}
check_continuation(curthread, *cond,
mutex_locked ? NULL : mutex);
} while ((done == 0) && (rval == 0));
/* Unlock the condition variable structure: */
THR_LOCK_RELEASE(curthread, &(*cond)->c_lock);
if (mutex_locked == 0)
_mutex_cv_lock(mutex);
/* Return the completion status: */
return (rval);
}
