ref: c7a058025b56bb86fd3135aa0e4cfd92115a2bef dir: /sys/src/libc/fmt/fmtlock.c/
#include <u.h> #include <libc.h> static Lock fmtl; void _fmtlock(void) { lock(&fmtl); } void _fmtunlock(void) { unlock(&fmtl); }