__test_and_set_bit
Section: Kernel Hacker's Manual (9)
Updated: __test_and_set_bit
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NAME
__test_and_set_bit - Set a bit and return its old value
SYNOPSIS
int __test_and_set_bit
(int nr,
volatile void *addr);
ARGUMENTS
- nr
-
Bit to set
- addr
-
Address to count from
DESCRIPTION
This operation is non-atomic and can be reordered.
If two examples of this operation race, one can appear to succeed
but actually fail. You must protect multiple accesses with a lock.
Index
- NAME
-
- SYNOPSIS
-
- ARGUMENTS
-
- DESCRIPTION
-
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Time: 03:15:43 GMT, June 12, 2005