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ck_pr_cas(3) | Library Functions Manual | ck_pr_cas(3) |
NAME¶
ck_pr_cas_ptr
,
ck_pr_cas_ptr_value
,
ck_pr_cas_ptr_2
,
ck_pr_cas_ptr_2_value
,
ck_pr_cas_double
,
ck_pr_cas_double_value
,
ck_pr_cas_char
,
ck_pr_cas_char_value
,
ck_pr_cas_uint
,
ck_pr_cas_uint_value
,
ck_pr_cas_int
,
ck_pr_cas_int_value
,
ck_pr_cas_64_2
,
ck_pr_cas_64_2_value
,
ck_pr_cas_64
,
ck_pr_cas_64_value
,
ck_pr_cas_32
,
ck_pr_cas_32_value
,
ck_pr_cas_16
,
ck_pr_cas_16_value
,
ck_pr_cas_8
, ck_pr_cas_8_value
—
LIBRARY¶
Concurrency Kit (libck, -lck)SYNOPSIS¶
#include <ck_pr.h>
bool
ck_pr_cas_ptr
(void
*target, void
*old_value, void
*new_value);
bool
ck_pr_cas_ptr_value
(void
*target, void
*old_value, void
*new_value, void
*original_value);
bool
ck_pr_cas_ptr_2
(void
*target, void
*old_value, void
*new_value);
bool
ck_pr_cas_ptr_2_value
(void
*target, void
*old_value, void
*new_value, void
*original_value);
bool
ck_pr_cas_double
(double
*target, double
old_value, double
new_value);
bool
ck_pr_cas_double_value
(double
*target, double
old_value, double
new_value, double
*original_value);
bool
ck_pr_cas_char
(char
*target, char
old_value, char
new_value);
bool
ck_pr_cas_char_value
(char
*target, char
old_value, char
new_value, char
*original_value);
bool
ck_pr_cas_uint
(unsigned
int *target, unsigned int
old_value, unsigned int
new_value);
bool
ck_pr_cas_uint_value
(unsigned
int *target, unsigned int
old_value, unsigned int
new_value, unsigned int
*original_value);
bool
ck_pr_cas_int
(int
*target, int
old_value, int
new_value);
bool
ck_pr_cas_int_value
(int
*target, int
old_value, int
new_value, int
*original_value);
bool
ck_pr_cas_64_2
(uint64_t
target[static 2],
uint64_t old_value[static
2], uint64_t
new_value[static 2]);
bool
ck_pr_cas_64_2_value
(uint64_t
target[static 2],
uint64_t old_value[static
2], uint64_t
new_value[static 2],
uint64_t original_value[static
2]);
bool
ck_pr_cas_64
(uint64_t
*target, uint64_t
old_value, uint64_t
new_value);
bool
ck_pr_cas_64_value
(uint64_t
*target, uint64_t
old_value, uint64_t
new_value, uint64_t
*original_value);
bool
ck_pr_cas_32
(uint32_t
*target, uint32_t
old_value, uint32_t
new_value);
bool
ck_pr_cas_32_value
(uint32_t
*target, uint32_t
old_value, uint32_t
new_value, uint32_t
*original_value);
bool
ck_pr_cas_16
(uint16_t
*target, uint16_t
old_value, uint16_t
new_value);
bool
ck_pr_cas_16_value
(uint16_t
*target, uint16_t
old_value, uint16_t
new_value, uint16_t
*original_value);
bool
ck_pr_cas_8
(uint8_t
*target, uint8_t
old_value, uint8_t
new_value);
bool
ck_pr_cas_8_value
(uint8_t
*target, uint8_t
old_value, uint8_t
new_value, uint8_t
*original_value);
DESCRIPTION¶
Theck_pr_cas
(3) family of
functions atomically compare the value in target for
equality with old_value and if so, replace the value
pointed to by target with the value specified by
new_value. If the value in target
was not equal to the value specified by old_value then
no modifications occur to the value in target. The
*_value form of these functions unconditionally update
original_value.
RETURN VALUES¶
This family of functions return true if the value in target was modified as a result of the operation. Otherwise, they return false.SEE ALSO¶
ck_pr_fence_load(3), ck_pr_fence_load_depends(3), ck_pr_fence_store(3), ck_pr_fence_memory(3), ck_pr_load(3), ck_pr_store(3), ck_pr_fas(3), ck_pr_faa(3), ck_pr_inc(3), ck_pr_dec(3), ck_pr_neg(3), ck_pr_not(3), ck_pr_sub(3), ck_pr_and(3), ck_pr_or(3), ck_pr_xor(3), ck_pr_add(3), ck_pr_btc(3), ck_pr_bts(3), ck_pr_btr(3)Additional information available at http://concurrencykit.org/
April 11, 2013 |