[SOLVED] CS #ifndef LOCK_H

#ifndef LOCK_H
#define LOCK_H

#include threads/semaphore.h

/* Lock */
struct lock {
struct thread *holder; /* Thread holding lock (for debugging) */
struct semaphore semaphore; /* Binary semaphore controlling access */
};

void lock_init(struct lock *);
void lock_acquire(struct lock *);
bool lock_try_acquire(struct lock *);
void lock_release(struct lock *);
bool lock_held_by_current_thread(const struct lock *);

#endif /* UCSC CSE130 */