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author | Marat Dukhan <maratek@gmail.com> | 2015-08-25 11:32:04 -0400 |
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committer | Marat Dukhan <maratek@gmail.com> | 2015-08-25 11:32:04 -0400 |
commit | e5c6fc1831269ac9c28f5cf758c07a1ce0f590e0 (patch) | |
tree | 063272e39fcd2ec2a170adc465b85fb600d65536 /examples/addition.c | |
parent | 7b1f6e5c68e48c3b328b7f6536e2b37bcdb37e6a (diff) | |
download | pthreadpool-e5c6fc1831269ac9c28f5cf758c07a1ce0f590e0.tar.gz |
Added example
Diffstat (limited to 'examples/addition.c')
-rw-r--r-- | examples/addition.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/examples/addition.c b/examples/addition.c new file mode 100644 index 0000000..687133c --- /dev/null +++ b/examples/addition.c @@ -0,0 +1,47 @@ +#include <stdio.h> +#include <stdint.h> +#include <assert.h> + +#include <pthreadpool.h> + +struct array_addition_context { + double *augend; + double *addend; + double *sum; +}; + +static void add_arrays(struct array_addition_context* context, size_t i) { + context->sum[i] = context->augend[i] + context->addend[i]; +} + +#define ARRAY_SIZE 4 + +int main() { + double augend[ARRAY_SIZE] = { 1.0, 2.0, 4.0, -5.0 }; + double addend[ARRAY_SIZE] = { 0.25, -1.75, 0.0, 0.5 }; + double sum[ARRAY_SIZE]; + + pthreadpool_t threadpool = pthreadpool_create(0); + assert(threadpool != NULL); + + const size_t threads_count = pthreadpool_get_threads_count(threadpool); + printf("Created thread pool with %zu threads\n", threads_count); + + struct array_addition_context context = { augend, addend, sum }; + pthreadpool_compute_1d(threadpool, + (pthreadpool_function_1d_t) add_arrays, + (void**) &context, + ARRAY_SIZE); + + pthreadpool_destroy(threadpool); + threadpool = NULL; + + printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Augend", + augend[0], augend[1], augend[2], augend[3]); + printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Addend", + addend[0], addend[1], addend[2], addend[3]); + printf("%8s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", "Sum", + sum[0], sum[1], sum[2], sum[3]); + + return 0; +} |