spinlock.h (318B)
1 // Mutual exclusion lock. 2 struct spinlock { 3 uint locked; // Is the lock held? 4 5 // For debugging: 6 char *name; // Name of lock. 7 struct cpu *cpu; // The cpu holding the lock. 8 uintp pcs[10]; // The call stack (an array of program counters) 9 // that locked the lock. 10 }; 11