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#include <sys/types.h>
#if !defined (__Userspace_os_Windows)
#include <sys/wait.h>
#include <unistd.h>
#include <pthread.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <netinet/sctp_pcb.h>
#include <netinet/sctp_sysctl.h>
#include "netinet/sctp_callout.h"
/* This is the polling time of callqueue in milliseconds
* 10ms seems to work well. 1ms was giving erratic behavior
*/
#define TIMEOUT_INTERVAL 10
void *user_sctp_timer_iterate(void * threadname);
void * (*timerFunction)(void *) = {&user_sctp_timer_iterate};
extern int ticks;
userland_mutex_t timer_mtx;
void
timer_init(void) {
userland_thread_t ithread;
#if !defined (__Userspace_os_Windows)
int rc;
#endif
char *tn = {"iterator"};
/* No need to do SCTP_TIMERQ_LOCK_INIT(); here, it is being done in sctp_pcb_init() */
/* start one thread here */
#if defined (__Userspace_os_Windows)
if ((ithread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)timerFunction, (void *)tn, 0, NULL))==NULL) {
printf("ERROR; Creating ithread failed\n");
exit(1);
}
#else
rc = pthread_create(&ithread, NULL, timerFunction, (void *)tn);
if (rc) {
printf("ERROR; return code from pthread_create() is %d\n", rc);
exit(1);
}
#endif
}
void *
user_sctp_timer_iterate(void *threadname)
{
sctp_os_timer_t *c;
void (*c_func)(void *);
void *c_arg;
sctp_os_timer_t *sctp_os_timer_next;
/*
* The MSEC_TO_TICKS conversion depends on hz. The to_ticks in
* sctp_os_timer_start also depends on hz. E.g. if hz=1000 then
* for multiple INIT the to_ticks is 2000, 4000, 8000, 16000, 32000, 60000
* and further to_ticks level off at 60000 i.e. 60 seconds.
* If hz=100 then for multiple INIT the to_ticks are 200, 400, 800 and so-on.
*/
struct timeval timeout;
while(1) {
timeout.tv_sec = 0;
timeout.tv_usec = 1000 * TIMEOUT_INTERVAL;
#if defined (__Userspace_os_Windows)
Sleep(TIMEOUT_INTERVAL);
#else
select(0, NULL, NULL, NULL, &timeout);
#endif
/* update our tick count */
ticks += MSEC_TO_TICKS(TIMEOUT_INTERVAL);
SCTP_TIMERQ_LOCK();
c = TAILQ_FIRST(&SCTP_BASE_INFO(callqueue));
while (c) {
if (c->c_time <= ticks) {
sctp_os_timer_next = TAILQ_NEXT(c, tqe);
TAILQ_REMOVE(&SCTP_BASE_INFO(callqueue), c, tqe);
c_func = c->c_func;
c_arg = c->c_arg;
c->c_flags &= ~SCTP_CALLOUT_PENDING;
SCTP_TIMERQ_UNLOCK();
c_func(c_arg);
SCTP_TIMERQ_LOCK();
c = sctp_os_timer_next;
} else {
c = TAILQ_NEXT(c, tqe);
}
}
SCTP_TIMERQ_UNLOCK();
}
return NULL;
}
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