Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_x86_mutex.h @ 220:4f81b931e9ff
nginx-0.0.1-2004-01-08-11:47:17 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 08 Jan 2004 08:47:17 +0000 |
parents | a7e45c45a95c |
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nginx-0.0.1-2003-04-28-19:06:39 import
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1 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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2 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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3 typedef struct { |
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nginx-0.0.1-2003-04-28-19:06:39 import
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4 int lock; |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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5 } ngx_mutex_t; |
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nginx-0.0.1-2003-04-28-19:06:39 import
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6 |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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7 |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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8 static inline int ngx_spin_lock(ngx_mutex_t *m, int count) |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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9 { |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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10 int lock; |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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11 |
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nginx-0.0.1-2003-04-28-19:06:39 import
Igor Sysoev <igor@sysoev.ru>
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12 __asm__ __volatile(" |
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nginx-0.0.1-2003-04-28-19:06:39 import
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13 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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14 get_lock: |
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nginx-0.0.1-2003-04-28-19:06:39 import
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15 mov $1, %1 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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16 xchg %1, %2 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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17 cmp $0, %1 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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18 jne spin_lock |
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19 |
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20 spin_lock: |
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nginx-0.0.1-2003-04-28-19:06:39 import
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21 cmp $0, %3 |
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22 je failed |
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23 |
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24 dec %3 |
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25 rep nop |
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nginx-0.0.1-2003-04-28-19:06:39 import
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26 cmp $0, %2 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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27 jne spin_lock |
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28 |
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nginx-0.0.1-2003-04-28-19:06:39 import
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29 ": "=q" (lock), "m" (m->lock), "q" (count)); |
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nginx-0.0.1-2003-04-28-19:06:39 import
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30 } |