diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h | 16 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h | 11 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h | 15 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h | 23 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h | 15 |
5 files changed, 80 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h index fd4a7ca4bb..ab325d2b06 100644 --- a/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h @@ -31,6 +31,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -73,6 +75,20 @@ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, \ + (futexp), FUTEX_WAKE_OP, (nr_wake), \ + (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + + static inline int __attribute__((always_inline)) __lll_mutex_trylock(int *futex) diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h index e13358ffef..4219fe2716 100644 --- a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h @@ -31,6 +31,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Delay in spinlock loop. */ #define BUSY_WAIT_NOP asm ("hint @pause") @@ -62,6 +64,15 @@ _r10 == -1; \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(ftx, nr_wake, nr_wake2, ftx2) \ +({ \ + DO_INLINE_SYSCALL(futex, 6, (long) (ftx), FUTEX_WAKE_OP, \ + (int) (nr_wake), (int) (nr_wake2), (long) (ftx2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + _r10 == -1; \ +}) + #define __lll_mutex_trylock(futex) \ (atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0) diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h index 1f2f481d64..f9eaa11e98 100644 --- a/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h @@ -33,6 +33,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -79,6 +81,19 @@ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, \ + (futexp), FUTEX_WAKE_OP, (nr_wake), \ + (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + #ifdef UP # define __lll_acq_instr "" # define __lll_rel_instr "" diff --git a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h index f4ed98a503..5f20537943 100644 --- a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h @@ -30,6 +30,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -103,6 +105,27 @@ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futex, nr_wake, nr_wake2, futex2) \ + ({ \ + register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \ + register unsigned long int __r3 asm ("3") = FUTEX_WAKE_OP; \ + register unsigned long int __r4 asm ("4") = (long int) (nr_wake); \ + register unsigned long int __r5 asm ("5") = (long int) (nr_wake2); \ + register unsigned long int __r6 asm ("6") = (unsigned long int) (futex2); \ + register unsigned long int __r7 asm ("7") \ + = (int) FUTEX_OP_CLEAR_WAKE_IF_GT_ONE; \ + register unsigned long __result asm ("2"); \ + \ + __asm __volatile ("svc %b1" \ + : "=d" (__result) \ + : "i" (SYS_futex), "0" (__r2), "d" (__r3), \ + "d" (__r4), "d" (__r5), "d" (__r6), "d" (__r7) \ + : "cc", "memory" ); \ + __result > -4096UL; \ + }) + + #define lll_compare_and_swap(futex, oldval, newval, operation) \ do { \ __typeof (futex) __futex = (futex); \ diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h index 4626aec524..8d12db3a16 100644 --- a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h @@ -30,6 +30,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -76,6 +78,19 @@ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, \ + (futexp), FUTEX_WAKE_OP, (nr_wake), \ + (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + #ifdef __sparc32_atomic_do_lock #error SPARC < v9 does not support compare and swap which is essential for futex based locking #endif |