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__test_and_clear_bit
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
__test_and_clear_bit - Clear a bit and return its old valueSYNOPSIS
- int __test_and_clear_bit(int nr, volatile void * addr);
ARGUMENTS
nr
- Bit to clear
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.
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