ceph/src/boost/libs/context/example/v2/echosse.cpp

   1
   2 //          Copyright Oliver Kowalke 2009.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <cstddef>
   8 #include <cstdlib>
   9 #include <cstring>
  10 #include <iostream>
  11 #include <emmintrin.h>
  12
  13 #include <boost/context/all.hpp>
  14
  15 void echoSSE( int i) {
  16     __m128i xmm;
  17     xmm = _mm_set_epi32( i, i + 1, i + 2, i + 3);
  18     uint32_t v32[4];
  19     memcpy( & v32, & xmm, 16);
  20     std::cout << v32[0];
  21     std::cout << v32[1];
  22     std::cout << v32[2];
  23     std::cout << v32[3];
  24 }
  25
  26 boost::context::execution_context< int > echo( boost::context::execution_context< int > ctx, int i) {
  27     for (;;) {
  28         std::cout << i;
  29         echoSSE( i);
  30         std::cout << " ";
  31         std::tie( ctx, i) = ctx( 0);
  32     }
  33     return ctx;
  34 }
  35
  36 int main( int argc, char * argv[]) {
  37     boost::context::execution_context< int > ctx( echo);
  38     for ( int i = 0; i < 10; ++i) {
  39         ctx = std::get< 0 >( ctx( i) );
  40     }
  41     std::cout << "\nDone" << std::endl;
  42     return EXIT_SUCCESS;
  43 }