1 b2cfc4e2 2003-09-30 devnull #include <lib9.h>
 2 b2cfc4e2 2003-09-30 devnull 
 3 b2cfc4e2 2003-09-30 devnull extern int __isthreaded;
 4 b2cfc4e2 2003-09-30 devnull int
 5 b2cfc4e2 2003-09-30 devnull ffork(int flags, void(*fn)(void*), void *arg)
 6 b2cfc4e2 2003-09-30 devnull {
 7 b2cfc4e2 2003-09-30 devnull 	void *p;
 8 b2cfc4e2 2003-09-30 devnull 
 9 b2cfc4e2 2003-09-30 devnull 	__isthreaded = 1;
10 b2cfc4e2 2003-09-30 devnull 	p = malloc(16384);
11 b2cfc4e2 2003-09-30 devnull 	if(p == nil)
12 b2cfc4e2 2003-09-30 devnull 		return -1;
13 b2cfc4e2 2003-09-30 devnull 	memset(p, 0xFE, 16384);
14 b2cfc4e2 2003-09-30 devnull 	return rfork_thread(RFPROC|flags, (char*)p+16000, (int(*)(void*))fn, arg);
15 b2cfc4e2 2003-09-30 devnull }
16 b2cfc4e2 2003-09-30 devnull 
17 b2cfc4e2 2003-09-30 devnull /*
18 b2cfc4e2 2003-09-30 devnull  * For FreeBSD libc.
19 b2cfc4e2 2003-09-30 devnull  */
20 b2cfc4e2 2003-09-30 devnull 
21 b2cfc4e2 2003-09-30 devnull typedef struct {
22 b2cfc4e2 2003-09-30 devnull 	volatile long	access_lock;
23 b2cfc4e2 2003-09-30 devnull 	volatile long	lock_owner;
24 b2cfc4e2 2003-09-30 devnull 	volatile char	*fname;
25 b2cfc4e2 2003-09-30 devnull 	volatile int	lineno;
26 b2cfc4e2 2003-09-30 devnull } spinlock_t;
27 b2cfc4e2 2003-09-30 devnull 
28 b2cfc4e2 2003-09-30 devnull void
29 b2cfc4e2 2003-09-30 devnull _spinlock(spinlock_t *lk)
30 b2cfc4e2 2003-09-30 devnull {
31 b2cfc4e2 2003-09-30 devnull 	lock((Lock*)&lk->access_lock);
32 b2cfc4e2 2003-09-30 devnull }
33 b2cfc4e2 2003-09-30 devnull 
34 a995e477 2003-10-01 devnull int
35 a995e477 2003-10-01 devnull getfforkid(void)
36 a995e477 2003-10-01 devnull {
37 a995e477 2003-10-01 devnull 	return getpid();
38 a995e477 2003-10-01 devnull }
39 a995e477 2003-10-01 devnull