share.c

经典的psos编程实例源码

/* share.c - Tasks #3, 4, and 5 */

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

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

void main_loop(ULONG me, ULONG tid, ULONG ev, ULONG qid)
{
	ULONG	rc;
	struct	message	in;
	char	str[256];

	bprintf("%s Task begin\n", me);

	do {
		/* Tell tsk1 we are ready */
		if (0 != (rc = ev_send(tid, ev)))
			fail(rc, "%s: ev_send(0x%x)", me, tid);
		/* Then receive the broadcast */
		if (0 != (rc = q_receive(qid, 0, 0, (ULONG *) &in)))
			fail(rc, "%s: q_receive()", me);
		bprintf("%s: received ", (char *) me);
		if (in.flag == FALSE)
			bprintf("FALSE: ");
		else
			bprintf("TRUE:  ");
		str[0]='\0';
		strncat(str, (char *) &(in.data), sizeof(in.data));
		bprintf("%s\n", str);
	} while (in.flag == FALSE);
	/* Report we've seen the final message */
	if (0 != (rc = ev_send(tid, ev)))
		fail(rc, "%s: ev_send(0x%x)", me, tid);

	bprintf("%s Task end\n", (char *) me);
	exit(0);
}