Last change
on this file since 388 was 388, checked in by coas-nagasima, 5 years ago |
Azure IoT Hub Device C SDK を使ったサンプルの追加
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Property svn:eol-style
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native
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Property svn:keywords
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Id
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Property svn:mime-type
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text/x-csrc
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File size:
284 bytes
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[388] | 1 | #include "pthread_impl.h"
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| 2 |
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| 3 | static volatile int vmlock[2];
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| 4 |
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| 5 | void __vm_wait()
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| 6 | {
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| 7 | int tmp;
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| 8 | while ((tmp=vmlock[0]))
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| 9 | __wait(vmlock, vmlock+1, tmp, 1);
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| 10 | }
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| 11 |
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| 12 | void __vm_lock()
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| 13 | {
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| 14 | a_inc(vmlock);
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| 15 | }
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| 16 |
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| 17 | void __vm_unlock()
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| 18 | {
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| 19 | if (a_fetch_add(vmlock, -1)==1 && vmlock[1])
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| 20 | __wake(vmlock, -1, 1);
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| 21 | }
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