d0f7acf9eb
An x86-64 operating system built from xv6, now largely rewritten: SMP, a copy-on-write root filesystem (SchFS), PCI/USB/virtio drivers, a TTF rasteriser, and a Linux-numbered syscall ABI. No history before this point -- the tree was never under version control. This commit exists so the rename that follows has something to undo to.
9 lines
314 B
C
9 lines
314 B
C
// Mutual exclusion lock.
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struct spinlock {
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uint64 locked; // Is the lock held?
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// For debugging:
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char *name; // Name of lock.
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struct cpu *cpu; // The cpu holding the lock.
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addr_t pcs[10]; // The call stack (an array of program counters)
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// that locked the lock.
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};
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