Last change
on this file since e693572 was
ba0e1bc,
checked in by caparson <caparson@…>, 9 months ago
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Added supporting library routines for cofor impl
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-
Property mode set to
100644
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File size:
1.2 KB
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1 | #include <cofor.hfa> |
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2 | |
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3 | ////////////////////////////////////////////////////////////////////////////////////////// |
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4 | // cofor ( uC++ COFOR ) |
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5 | |
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6 | thread cofor_task { |
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7 | ssize_t low, high; |
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8 | __cofor_body_t loop_body; |
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9 | }; |
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10 | |
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11 | static void ?{}( cofor_task & this, ssize_t low, ssize_t high, __cofor_body_t loop_body ) { |
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12 | this.low = low; |
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13 | this.high = high; |
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14 | this.loop_body = loop_body; |
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15 | } |
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16 | |
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17 | void main( cofor_task & this ) with( this ) { |
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18 | for ( ssize_t i = low; i < high; i++ ) |
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19 | loop_body(i); |
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20 | } |
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21 | |
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22 | void __Cofor__( ssize_t low, ssize_t high, __cofor_body_t loop_body ) libcfa_public { |
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23 | ssize_t range = high - low; |
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24 | if ( range <= 0 ) return; |
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25 | ssize_t nprocs = get_proc_count( *active_cluster() ); |
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26 | if ( nprocs == 0 ) return; |
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27 | ssize_t threads = range < nprocs ? range : nprocs; |
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28 | ssize_t stride = range / threads + 1, extras = range % threads; |
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29 | ssize_t i = 0; |
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30 | ssize_t stride_iter = low; |
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31 | cofor_task * runners[ threads ]; |
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32 | for ( i; threads ) { |
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33 | runners[i] = alloc(); |
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34 | } |
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35 | for ( i = 0; i < extras; i += 1, stride_iter += stride ) { |
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36 | (*runners[i]){ stride_iter, stride_iter + stride, loop_body }; |
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37 | } |
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38 | stride -= 1; |
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39 | for ( ; i < threads; i += 1, stride_iter += stride ) { |
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40 | (*runners[i]){ stride_iter, stride_iter + stride, loop_body }; |
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41 | } |
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42 | for ( i; threads ) { |
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43 | delete( runners[i] ); |
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44 | } |
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45 | } |
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46 | |
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47 | |
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