source: tests/concurrency/examples/multiSort.cfa @ 3ac5fd8

//
// Cforall Version 1.0.0 Copyright (C) 2022 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// multiSort.c -- compute sort single array multiple times
//                      make sure sorting works, thread don't screw up
//                      and trampolines work on thread stacks
//
// Author           : Peter A. Buhr
// Created On       : Tue 05 24 11:34:23 2022
// Last Modified By :
// Last Modified On :
// Update Count     :
//

#include <barrier.hfa>
#include <fstream.hfa>
#include <math.trait.hfa>
#include <stdlib.hfa>
#include <thread.hfa>

forall(T) {
        struct MyVec2 {
                T val1;
                T val2;
        };

        forall(| Equality( T ))
        int ?!=?( MyVec2(T) lhs, MyVec2(T) rhs ) { return lhs.val1 != rhs.val1 || lhs.val2 != rhs.val2; }

        forall(| Relational(T)) {
                static inline int ?<?( MyVec2(T) lhs, MyVec2(T) rhs ) {
                        if(lhs.val1 < rhs.val1) return true;
                        if(lhs.val1 > rhs.val1) return false;
                        if(lhs.val2 < rhs.val2) return true;
                        if(lhs.val2 > rhs.val2) return false;
                        return false;
                }
        }

        forall(| { T random( void ); })
        MyVec2(T) random( void ) {
                MyVec2(T) r;
                r.val1 = random();
                r.val2 = random();
                return r;
        }
}



const unsigned nthreads = 7;
const unsigned nvecs = 313;
barrier bar = { nthreads + 1 };
const MyVec2(long int) * original;

thread Sorter {
        MyVec2(long int) * copy;
};

void ^?{}( Sorter & mutex this ) {
        free(this.copy);
}

// Make this a polymorphic call to prevent thunks from being hosted
forall( T | Relational(T) | sized(MyVec2(T)) )
void block_sort( MyVec2(T) * vals, size_t dim ) __attribute__((noinline)) {
        MyVec2(T) dummy = vals[0];
        block( bar );

        qsort(vals, dim);
}


void main( Sorter & this ) {
        this.copy = aalloc(nvecs);
        for(i; nvecs) {
                this.copy[i] = original[i];
        }

        block_sort(this.copy, nvecs);
}

int main() {
        sout | "Generating";
        MyVec2(long int) * local = aalloc( nvecs );
        for(i; nvecs) {
                local[i] = random();
        }

        original = local;

        sout | "Launching";

        processor p; {
                Sorter sorters[nthreads];

                block( bar );

                sout | "Sorting";

                qsort(local, nvecs);

                sout | "Checking";

                for(i; nthreads) {
                        const MyVec2(long int) * copy = join( sorters[i] ).copy;
                        for(j; nvecs) {
                                if(copy[j] != original[j]) {
                                        sout | "Error at thread" | i | ", index" | j | ": data doesn't match!";
                                }
                        }
                }
        }

        free(local);

        sout | "Done";
}