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/** \file ipc.h inter process communication and shared memory routines */
/** possible values for shm_attach() */
enum shm_attach_mode {ATTACH_RO, ATTACH_RW};
int mutex_new(void);
int mutex_destroy(int id);
void mutex_lock(int id);
void mutex_unlock(int id);
int shm_new(size_t size);
int shm_attach(int id, enum shm_attach_mode mode, void **result);
int shm_detach(void *addr);
int shm_destroy(int id);
#ifndef SHMMAX
#define SHMMAX 65535
#endif
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