#define SS_DISABLE 4
typedef byte* kevent_udata;
int32 runtime·thr_new(ThrParam*, int32);
void runtime·sigpanic(void);
void runtime·sigaltstack(Sigaltstack*, Sigaltstack*);
struct sigaction;
void runtime·sigaction(int32, struct sigaction*, struct sigaction*);
void runtime·sigprocmask(Sigset *, Sigset *);
void runtime·unblocksignals(void);
void runtime·setitimer(int32, Itimerval*, Itimerval*);
int32 runtime·sysctl(uint32*, uint32, byte*, uintptr*, byte*, uintptr);
#define NSIG 33
#define SI_USER 0x10001
#define RLIMIT_AS 10
typedef struct Rlimit Rlimit;
struct Rlimit {
int64 rlim_cur;
int64 rlim_max;
};
int32 runtime·getrlimit(int32, Rlimit*);