| ck_pr_cas(3) | Library Functions Manual | ck_pr_cas(3) |
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 — atomic
compare-and-swap operations
Concurrency Kit (libck, -lck)
#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);
The
ck_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.
This family of functions return true if the value in target was modified as a result of the operation. Otherwise, they return false.
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 |