projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 684a93c4 MD |
1 | /* |
| 2 | * SYS/MPLOCK2.H | |
| 3 | * | |
| 4 | * Implement the MP lock. Note that debug operations | |
| 5 | */ | |
| 6 | #ifndef _SYS_MPLOCK2_H_ | |
| 7 | #define _SYS_MPLOCK2_H_ | |
| 8 | ||
| 684a93c4 | 9 | #include <machine/atomic.h> |
| 684a93c4 MD |
10 | #ifndef _SYS_THREAD_H_ |
| 11 | #include <sys/thread.h> | |
| 12 | #endif | |
| 13 | #ifndef _SYS_GLOBALDATA_H_ | |
| 14 | #include <sys/globaldata.h> | |
| 15 | #endif | |
| 16 | ||
| 17 | #ifdef SMP | |
| 18 | ||
| b5d16701 MD |
19 | /* |
| 20 | * NOTE: try_mplock()/lwkt_trytoken() return non-zero on success. | |
| 21 | */ | |
| 22 | #define get_mplock() lwkt_gettoken(&mp_token) | |
| 23 | #define try_mplock() lwkt_trytoken(&mp_token) | |
| 24 | #define rel_mplock() lwkt_reltoken(&mp_token) | |
| 25 | #define get_mplock_count(td) lwkt_cnttoken(&mp_token, td) | |
| 684a93c4 | 26 | |
| 684a93c4 | 27 | void cpu_get_initial_mplock(void); |
| 684a93c4 | 28 | |
| 01672f8c MD |
29 | #define MP_LOCK_HELD() LWKT_TOKEN_HELD_EXCL(&mp_token) |
| 30 | #define ASSERT_MP_LOCK_HELD() ASSERT_LWKT_TOKEN_HELD_EXCL(&mp_token) | |
| c5724852 | 31 | |
| 684a93c4 MD |
32 | #else |
| 33 | ||
| 34 | /* | |
| 35 | * UNI-PROCESSOR BUILD - Degenerate case macros | |
| 36 | */ | |
| 37 | #define get_mplock() | |
| 38 | #define rel_mplock() | |
| 39 | #define try_mplock() 1 | |
| 40 | #define owner_mplock() 0 | |
| b5d16701 | 41 | #define MP_LOCK_HELD(gd) 1 |
| 684a93c4 MD |
42 | #define ASSERT_MP_LOCK_HELD(td) |
| 43 | ||
| 44 | #endif | |
| 45 | ||
| 46 | #endif |