ref: fd1a984ff0bbd2cf91adad5adfa1f61f2cd1ad93 dir: /libc/fmtlock.c/
#include <u.h> #include <libc.h> static Lock fmtl; void __fmtlock(void) { lock(&fmtl); } void __fmtunlock(void) { unlock(&fmtl); }