| #ifndef _LOWLEVELLOCK_H |
| #define _LOWLEVELLOCK_H |
| |
| #include <atomic.h> |
| #include <sys/param.h> |
| #include <parlib/spinlock.h> |
| |
| /* Akaros doesn't support private vs shared locks. That's probably a problem */ |
| #define LLL_PRIVATE 0 |
| #define LLL_SHARED 1 |
| |
| /* Glibc's locking is a nightmare, and in lieu of rewriting that mess (see |
| * libc-lock.h) to support something other than an integer for the LLL lock |
| * (and thus the libc lock, and the libc recursive lock, etc), we'll just use |
| * an int for storage and cast that to a struct spin_pdr_lock, which happens to |
| * also be 32 bits. FFS. */ |
| #define LLL_LOCK_INITIALIZER SPINPDR_UNLOCKED |
| |
| #define lll_lock(l, p) spin_pdr_lock((struct spin_pdr_lock*)&(l)) |
| #define lll_unlock(l, p) spin_pdr_unlock((struct spin_pdr_lock*)&(l)) |
| /* lll_trylock returns 0 on success. spin_pdr_trylock returns TRUE on |
| * success. */ |
| #define lll_trylock(l) !spin_pdr_trylock((struct spin_pdr_lock*)&l) |
| |
| #define lll_futex_wait(m,v,p) do { assert("NO FUTEX_WAIT FOR YOU!" == 0); } while(0) |
| #define lll_futex_wake(m,n,p) do { assert("NO FUTEX_WAKE FOR YOU!" == 0); } while(0) |
| |
| #endif |
