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implement POSIX semaphores

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This commit is contained in:
Rich Felker
2011-03-04 00:45:59 -05:00
parent 03dcc3417c
commit 6fc5fdbdc7
10 changed files with 201 additions and 0 deletions
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13
src/thread/sem_init.c Normal file
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#include <semaphore.h>
#include <limits.h>
#include <errno.h>
int sem_init(sem_t *sem, int pshared, unsigned value)
{
if (value > SEM_VALUE_MAX) {
errno = EINVAL;
return -1;
}
sem->__val[0] = value;
return 0;
}