mutex_64.h File Reference

Go to the source code of this file.

Macros
#define	__mutex_fastpath_lock(v, fail_fn)
#define	__mutex_fastpath_unlock(v, fail_fn)
#define	__mutex_slowpath_needs_to_unlock()   1

Macro Definition Documentation

#define __mutex_fastpath_lock	(		v,
			fail_fn
	)

Value:

do {                                \
    unsigned long dummy;                    \
								\
	typecheck(atomic_t *, v);              \
    typecheck_fn(void (*)(atomic_t *), fail_fn);        \
                                \
    asm volatile(LOCK_PREFIX "   decl (%%rdi)\n"        \
             "   jns 1f     \n"         \
             "   call " #fail_fn "\n"           \
             "1:"                   \
             : "=D" (dummy)             \
             : "D" (v)                  \
             : "rax", "rsi", "rdx", "rcx",      \
               "r8", "r9", "r10", "r11", "memory"); \
} while (0)

__mutex_fastpath_lock - decrement and call function if negative : pointer of type atomic_t : function to call if the result is negative

Atomically decrements and calls <fail_fn> if the result is negative.

Definition at line 19 of file mutex_64.h.

#define __mutex_fastpath_unlock	(		v,
			fail_fn
	)

Value:

do {                                \
    unsigned long dummy;                    \
								\
	typecheck(atomic_t *, v);              \
    typecheck_fn(void (*)(atomic_t *), fail_fn);        \
                                \
    asm volatile(LOCK_PREFIX "   incl (%%rdi)\n"        \
             "   jg 1f\n"               \
             "   call " #fail_fn "\n"           \
             "1:"                   \
             : "=D" (dummy)             \
             : "D" (v)                  \
             : "rax", "rsi", "rdx", "rcx",      \
               "r8", "r9", "r10", "r11", "memory"); \
} while (0)

__mutex_fastpath_unlock - increment and call function if nonpositive : pointer of type atomic_t : function to call if the result is nonpositive

Atomically increments and calls <fail_fn> if the result is nonpositive.

Definition at line 62 of file mutex_64.h.

#define __mutex_slowpath_needs_to_unlock

(

)

1

Definition at line 79 of file mutex_64.h.