root.c

psos调用实例

/* root.c */

#include "sys_conf.h"
#include <psos.h>
#include <prepc.h>
#include <stdio.h>

#include "misc.h"
#include "appl.h"

/* ROOT task */
void
root()
{
	void *dummy;
	ULONG ioretval, iopb[4], rc, args[4], tid1, tid2, ignored;

	/* Initialize all drivers */
	de_init(DEV_TIMER, 0, &ioretval, &dummy);
	de_init(DEV_SERIAL, 0, &ioretval, &dummy);

	bpinit(128*100);
	bprintf("\nRoot task begin\n");

	/* Create and start the two test tasks */
	args[2] = args[3] = 0;
	args[0] = (ULONG) T1_NAM;	/* This task's name */
	args[1] = (ULONG) T2_NAM;	/* Other task's name */
	if (rc = t_create(T1_NAM, 128, 1024, 1024, 0, &tid1))
		fail(rc, "root: t_create(%s)", T1_NAM);
	if (rc = t_start(tid1, 0, (void(*)()) tsk1, args))
		fail(rc, "root: t_start(%s)", T1_NAM);
	args[0] = (ULONG) T2_NAM;	/* This task's name */
	args[1] = (ULONG) T1_NAM;	/* Other task's name */
	if (rc = t_create(T2_NAM, 128, 1024, 1024, 0, &tid2))
		fail(rc, "root: t_create(%s)", T2_NAM);
	if (rc = t_start(tid2, 0, (void(*)()) tsk2, args))
		fail(rc, "root: t_start(%s)", T2_NAM);

	/* Now wait until they have both been deleted */
	while (0 == (rc = t_getreg(tid1, 0, &ignored)))
		tm_wkafter(10);
	if (rc != ERR_OBJDEL)
		fail(rc, "root: t_getreg(%s)", T1_NAM);
	while (0 == (rc = t_getreg(tid2, 0, &ignored)))
		tm_wkafter(10);
	if (rc != ERR_OBJDEL)
		fail(rc, "root: t_getreg(%s)", T2_NAM);

	/* Example finished */
	bprintf("Root task end\n");
	bpflush();
	exit(0);
}