ref: c309f466eff33a331f9a8d8c8b18cfe613c1d3f4
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; }