Thomas Lockhart <lockhart@alumni.caltech.edu> writes:
> That is not already available from the Irix support code?
What we have for IRIX is
#if defined(__sgi)
/** SGI IRIX 5* slock_t is defined as a unsigned long. We use the standard SGI* mutex API.** The following comment is
leftfor historical reasons, but is probably* not a good idea since the mutex ABI is supported.** This stuff may be
supplementedin the future with Masato Kataoka's MIPS-II* assembly from his NECEWS SVR4 port, but we probably ought to
retainthis* for the R3000 chips out there.*/
#include "mutex.h"
#define TAS(lock) (test_and_set(lock,1))
#define S_UNLOCK(lock) (test_then_and(lock,0))
#define S_INIT_LOCK(lock) (test_then_and(lock,0))
#define S_LOCK_FREE(lock) (test_then_add(lock,0) == 0)
#endif /* __sgi */
Doesn't look to me like it's likely to work on anything but IRIX ...
regards, tom lane