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authorMarat Dukhan <maratek@gmail.com>2015-08-25 11:32:04 -0400
committerMarat Dukhan <maratek@gmail.com>2015-08-25 11:32:04 -0400
commite5c6fc1831269ac9c28f5cf758c07a1ce0f590e0 (patch)
tree063272e39fcd2ec2a170adc465b85fb600d65536 /examples/addition.c
parent7b1f6e5c68e48c3b328b7f6536e2b37bcdb37e6a (diff)
downloadpthreadpool-e5c6fc1831269ac9c28f5cf758c07a1ce0f590e0.tar.gz
Added example
Diffstat (limited to 'examples/addition.c')
-rw-r--r--examples/addition.c47
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;
+}