ref: 95c865a4974cd2e1429a0b19da9f8f0e45891fbe
dir: /sys/src/libthread/chanprint.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
int
chanprint(Channel *c, char *fmt, ...)
{
va_list arg;
char *p;
int n;
va_start(arg, fmt);
p = vsmprint(fmt, arg);
va_end(arg);
if(p == nil)
sysfatal("vsmprint failed: %r");
n = sendp(c, p);
yield(); /* let recipient handle message immediately */
return n;
}