commit | 0e275fe56094626349c55a524ea8b71a85daa64b | [log] [tgz] |
---|---|---|
author | Marat Dukhan <maratek@google.com> | Tue Oct 01 12:44:36 2019 -0700 |
committer | Marat Dukhan <maratek@google.com> | Tue Oct 01 12:44:36 2019 -0700 |
tree | d38a16d287d72f519c89cd3a9c4ea81b7b533575 | |
parent | 9e2825c0ef127a733375b56f81ee29840f5a89ef [diff] |
Add macro to guard declaration of deprecated APIs Defining PTHREADPOOL_NO_DEPRECATED_API macro makes pthreadpool.h head omit declarations of deprecated pthreadpool_compute_* APIs
pthreadpool is a pthread-based thread pool implementation. It is intended to provide functionality of #pragma omp parallel for
for POSIX systems where OpenMP is not available.
The following example demonstates using the thread pool for parallel addition of two arrays:
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; }