PR_IMPLEMENT(PRSemaphore*) PR_NewSem(PRUintn value)
{
PRSemaphore *semaphore;
static PRBool unwarned = PR_TRUE;
if (!_pr_initialized) _PR_ImplicitInitialization();
if (unwarned) unwarned = _PR_Obsolete(
"PR_NewSem", "locks & condition variables");
semaphore = PR_NEWZAP(PRSemaphore);
if (NULL != semaphore)
{
PRLock *lock = PR_NewLock();
if (NULL != lock)
{
semaphore->cvar = PR_NewCondVar(lock);
if (NULL != semaphore->cvar)
{
semaphore->count = value;
return semaphore;
}
PR_DestroyLock(lock);
}
PR_Free(semaphore);
}
return NULL;
}
PR_IMPLEMENT(void) PR_DestroySem(PRSemaphore *semaphore)
{
static PRBool unwarned = PR_TRUE;
if (unwarned) unwarned = _PR_Obsolete(
"PR_DestroySem", "locks & condition variables");
PR_DestroyLock(semaphore->cvar->lock);
PR_DestroyCondVar(semaphore->cvar);
PR_Free(semaphore);
} /* PR_DestroySem */
PR_IMPLEMENT(void) PR_PostSem(PRSemaphore *semaphore)
{
static PRBool unwarned = PR_TRUE;
if (unwarned) unwarned = _PR_Obsolete(
"PR_PostSem", "locks & condition variables");
PR_Lock(semaphore->cvar->lock);
PR_NotifyCondVar(semaphore->cvar);
semaphore->count += 1;
PR_Unlock(semaphore->cvar->lock);
} /* PR_PostSem */
/*
** OBSOLETE -- the function name is misspelled.
*/
PR_IMPLEMENT(char) PR_GetDirectorySepartor(void)
{
#if defined(DEBUG)
static PRBool warn = PR_TRUE;
if (warn) {
warn = _PR_Obsolete("PR_GetDirectorySepartor()",
"PR_GetDirectorySeparator()");
}
#endif
return PR_GetDirectorySeparator();
} /* PR_GetDirectorySepartor */
PR_IMPLEMENT(PRStatus) PR_WaitSem(PRSemaphore *semaphore)
{
PRStatus status = PR_SUCCESS;
static PRBool unwarned = PR_TRUE;
if (unwarned) unwarned = _PR_Obsolete(
"PR_WaitSem", "locks & condition variables");
PR_Lock(semaphore->cvar->lock);
while ((semaphore->count == 0) && (PR_SUCCESS == status))
status = PR_WaitCondVar(semaphore->cvar, PR_INTERVAL_NO_TIMEOUT);
if (PR_SUCCESS == status) semaphore->count -= 1;
PR_Unlock(semaphore->cvar->lock);
return status;
} /* PR_WaitSem */
PR_SetStdioRedirect(
PRProcessAttr *attr,
PRSpecialFD stdioFd,
PRFileDesc *redirectFd)
{
#if defined(DEBUG)
static PRBool warn = PR_TRUE;
if (warn) {
warn = _PR_Obsolete("PR_SetStdioRedirect()",
"PR_ProcessAttrSetStdioRedirect()");
}
#endif
PR_ProcessAttrSetStdioRedirect(attr, stdioFd, redirectFd);
}
PR_IMPLEMENT(PRInt32) PR_Select(
PRInt32 unused, PR_fd_set *pr_rd, PR_fd_set *pr_wr,
PR_fd_set *pr_ex, PRIntervalTime timeout)
{
#if !defined(NEED_SELECT)
PRInt32 npds = 0;
/*
** Find out how many fds are represented in the three lists.
** Then allocate a polling descriptor for the logical union
** (there can't be any overlapping) and call PR_Poll().
*/
PRPollDesc *copy, *poll;
static PRBool warning = PR_TRUE;
if (warning) warning = _PR_Obsolete( "PR_Select()", "PR_Poll()");
/* try to get an initial guesss at how much space we need */
npds = 0;
if ((NULL != pr_rd) && ((pr_rd->hsize + pr_rd->nsize - npds) > 0))
npds = pr_rd->hsize + pr_rd->nsize;
if ((NULL != pr_wr) && ((pr_wr->hsize + pr_wr->nsize - npds) > 0))
npds = pr_wr->hsize + pr_wr->nsize;
if ((NULL != pr_ex) && ((pr_ex->hsize + pr_ex->nsize - npds) > 0))
npds = pr_ex->hsize + pr_ex->nsize;
if (0 == npds)
{
PR_Sleep(timeout);
return 0;
}
copy = poll = (PRPollDesc*)PR_Calloc(npds + PD_INCR, sizeof(PRPollDesc));
if (NULL == poll) goto out_of_memory;
poll[npds + PD_INCR - 1].fd = (PRFileDesc*)-1;
poll = _pr_setfd(pr_rd, PR_POLL_READ, poll);
if (NULL == poll) goto out_of_memory;
poll = _pr_setfd(pr_wr, PR_POLL_WRITE, poll);
if (NULL == poll) goto out_of_memory;
poll = _pr_setfd(pr_ex, PR_POLL_EXCEPT, poll);
if (NULL == poll) goto out_of_memory;
unused = 0;
while (NULL != poll[unused].fd && (PRFileDesc*)-1 != poll[unused].fd)
{
++unused;
}
PR_ASSERT(unused > 0);
npds = PR_Poll(poll, unused, timeout);
if (npds > 0)
{
/* Copy the results back into the fd sets */
if (NULL != pr_rd) pr_rd->nsize = pr_rd->hsize = 0;
if (NULL != pr_wr) pr_wr->nsize = pr_wr->hsize = 0;
if (NULL != pr_ex) pr_ex->nsize = pr_ex->hsize = 0;
for (copy = &poll[unused - 1]; copy >= poll; --copy)
{
if (copy->out_flags & PR_POLL_NVAL)
{
PR_SetError(PR_BAD_DESCRIPTOR_ERROR, 0);
npds = -1;
break;
}
if (copy->out_flags & PR_POLL_READ)
if (NULL != pr_rd) pr_rd->harray[pr_rd->hsize++] = copy->fd;
if (copy->out_flags & PR_POLL_WRITE)
if (NULL != pr_wr) pr_wr->harray[pr_wr->hsize++] = copy->fd;
if (copy->out_flags & PR_POLL_EXCEPT)
if (NULL != pr_ex) pr_ex->harray[pr_ex->hsize++] = copy->fd;
}
}
PR_DELETE(poll);
return npds;
out_of_memory:
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return -1;
#endif /* !defined(NEED_SELECT) */
}
