Last change
on this file since 175 was
159,
checked in by alain, 13 years ago
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Introducing the spin_locks / modifying the MWMR channels and the barriers
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File size:
1.5 KB
|
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1 | ////////////////////////////////////////////////////////////////////////////////// |
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2 | // File : mwmr_channel.h |
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3 | // Date : 01/04/2012 |
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4 | // Author : alain greiner |
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5 | // Copyright (c) UPMC-LIP6 |
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6 | /////////////////////////////////////////////////////////////////////////////////// |
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7 | |
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8 | #ifndef _MWMR_CHANNEL_H_ |
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9 | #define _MWMR_CHANNEL_H_ |
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10 | |
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11 | /////////////////////////////////////////////////////////////////////////////////// |
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12 | // MWMR channel structure |
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13 | // The data array size is defined to obtain sizeof(mwmr_channel_t) = 4096 bytes. |
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14 | // The actual size can be redefined in the mapping info data structure. |
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15 | /////////////////////////////////////////////////////////////////////////////////// |
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16 | |
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17 | typedef struct mwmr_channel_s { |
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18 | unsigned int ptr; // index of the first valid data word |
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19 | unsigned int ptw; // index of the first empty slot |
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20 | unsigned int sts; // number of words available |
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21 | unsigned int depth; // max number of words in the channel |
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22 | unsigned int width; // number of word in an item |
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23 | unsigned int lock; // exclusive access lock |
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24 | unsigned int data[1018]; // circular buffer |
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25 | } mwmr_channel_t; |
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26 | |
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27 | ////////////////////////////////////////////////////////////////////////////// |
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28 | // MWMR access functions |
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29 | ////////////////////////////////////////////////////////////////////////////// |
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30 | |
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31 | void mwmr_write( mwmr_channel_t* mwmr, |
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32 | unsigned int* buffer, |
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33 | unsigned int nitems ); |
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34 | |
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35 | void mwmr_read( mwmr_channel_t* mwmr, |
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36 | unsigned int* buffer, |
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37 | unsigned int nitems ); |
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38 | #endif |
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39 | |
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