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hurd: make lll_* take a variable instead of a ptr

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To be coherent with other ports, let's make lll_* take a variable, and
rename those that keep taking a ptr into __lll_*.
This commit is contained in:
Samuel Thibault
2020-12-13 10:37:24 +00:00
parent 18c2ab9a09
commit bec412424e
14 changed files with 76 additions and 60 deletions
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24
mach/lowlevellock.h
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@@ -36,16 +36,20 @@
/* Wait on address PTR, without blocking if its contents
* are different from VAL. */
#define lll_wait(ptr, val, flags) \
#define __lll_wait(ptr, val, flags) \
__gsync_wait (__mach_task_self (), \
(vm_offset_t)(ptr), (val), 0, 0, (flags))
#define lll_wait(var, val, flags) \
__lll_wait (&(var), val, flags)
/* Wake one or more threads waiting on address PTR. */
#define lll_wake(ptr, flags) \
#define __lll_wake(ptr, flags) \
__gsync_wake (__mach_task_self (), (vm_offset_t)(ptr), 0, (flags))
#define lll_wake(var, flags) \
__lll_wake (&(var), flags)
/* Acquire the lock at PTR. */
#define lll_lock(ptr, flags) \
#define __lll_lock(ptr, flags) \
({ \
int *__iptr = (int *)(ptr); \
int __flags = (flags); \
@@ -55,27 +59,33 @@
{ \
if (atomic_exchange_acq (__iptr, 2) == 0) \
break; \
lll_wait (__iptr, 2, __flags); \
__lll_wait (__iptr, 2, __flags); \
} \
(void)0; \
})
#define lll_lock(var, flags) \
__lll_lock (&(var), flags)
/* Try to acquire the lock at PTR, without blocking.
Evaluates to zero on success. */
#define lll_trylock(ptr) \
#define __lll_trylock(ptr) \
({ \
int *__iptr = (int *)(ptr); \
*__iptr == 0 \
&& atomic_compare_and_exchange_bool_acq (__iptr, 1, 0) == 0 ? 0 : -1; \
})
#define lll_trylock(var) \
__lll_trylock (&(var))
/* Release the lock at PTR. */
#define lll_unlock(ptr, flags) \
#define __lll_unlock(ptr, flags) \
({ \
int *__iptr = (int *)(ptr); \
if (atomic_exchange_rel (__iptr, 0) == 2) \
lll_wake (__iptr, (flags)); \
__lll_wake (__iptr, (flags)); \
(void)0; \
})
#define lll_unlock(var, flags) \
__lll_unlock (&(var), flags)
#endif