Last change
on this file since 9d5eacb was
ba0e1bc,
checked in by caparson <caparson@…>, 10 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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Rev | Line | |
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[e4c3819] | 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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[ba0e1bc] | 6 | thread cofor_task { |
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[e4c3819] | 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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[ba0e1bc] | 11 | static void ?{}( cofor_task & this, ssize_t low, ssize_t high, __cofor_body_t loop_body ) { |
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[e4c3819] | 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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[ba0e1bc] | 17 | void main( cofor_task & this ) with( this ) { |
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[e4c3819] | 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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[11ab0b4a] | 22 | void __Cofor__( ssize_t low, ssize_t high, __cofor_body_t loop_body ) libcfa_public { |
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[e4c3819] | 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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[ba0e1bc] | 31 | cofor_task * runners[ threads ]; |
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[e4c3819] | 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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