ref: d6ea4969607d9d6b33ae5a40a947f8a2aa2c0845
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; }