xv6-65oo2/spinlock.h

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2006-09-07 14:12:30 +00:00
// Mutual exclusion lock.
struct spinlock {
uint locked; // Is the lock held?
2006-09-07 14:12:30 +00:00
// For debugging:
char *name; // Name of lock.
struct cpu *cpu; // The cpu holding the lock.
uint pcs[10]; // The call stack (an array of program counters)
// that locked the lock.
};