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annotate src/spinlock.h @ 171:5fa74a8989b0

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author anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jan 2020 13:14:19 +0900
parents 83c23a36980d
children 7c200a8328fa
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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1 // Mutual exclusion lock.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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2 struct spinlock {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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3 uint locked; // Is the lock held?
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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4
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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5 // For debugging:
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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6 char *name; // Name of lock.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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7 struct cpu *cpu; // The cpu holding the lock.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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8 uint pcs[10]; // The call stack (an array of program counters)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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9 // that locked the lock.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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10 };
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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