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49 lines
1.3 KiB
49 lines
1.3 KiB
#include <stdio.h>
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#include <stdint.h>
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#include <assert.h>
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#include <pthreadpool.h>
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struct array_addition_context {
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double *augend;
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double *addend;
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double *sum;
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};
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static void add_arrays(struct array_addition_context* context, size_t i) {
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context->sum[i] = context->augend[i] + context->addend[i];
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}
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#define ARRAY_SIZE 4
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int main() {
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double augend[ARRAY_SIZE] = { 1.0, 2.0, 4.0, -5.0 };
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double addend[ARRAY_SIZE] = { 0.25, -1.75, 0.0, 0.5 };
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double sum[ARRAY_SIZE];
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pthreadpool_t threadpool = pthreadpool_create(0);
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assert(threadpool != NULL);
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const size_t threads_count = pthreadpool_get_threads_count(threadpool);
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printf("Created thread pool with %zu threads\n", threads_count);
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struct array_addition_context context = { augend, addend, sum };
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pthreadpool_parallelize_1d(threadpool,
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(pthreadpool_task_1d_t) add_arrays,
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(void**) &context,
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ARRAY_SIZE,
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PTHREADPOOL_FLAG_DISABLE_DENORMALS /* flags */);
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pthreadpool_destroy(threadpool);
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threadpool = NULL;
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printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Augend",
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augend[0], augend[1], augend[2], augend[3]);
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printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Addend",
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addend[0], addend[1], addend[2], addend[3]);
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printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Sum",
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sum[0], sum[1], sum[2], sum[3]);
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return 0;
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}
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