ceph/src/boost/libs/context/example/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/continuation.hpp>
  14
  15 namespace ctx = boost::context;
  16
  17 void echoSSE( int i) {
  18     __m128i xmm;
  19     xmm = _mm_set_epi32( i, i + 1, i + 2, i + 3);
  20     uint32_t v32[4];
  21     memcpy( & v32, & xmm, 16);
  22     std::cout << v32[0];
  23     std::cout << v32[1];
  24     std::cout << v32[2];
  25     std::cout << v32[3];
  26 }
  27
  28
  29 int main( int argc, char * argv[]) {
  30     int i = 0;
  31     ctx::continuation c = ctx::callcc(
  32         [&i](ctx::continuation && c) {
  33             for (;;) {
  34                 std::cout << i;
  35                 echoSSE( i);
  36                 std::cout << " ";
  37                 c = c.resume();
  38             }
  39             return std::move( c);
  40         });
  41     for (; i < 10; ++i) {
  42         c = c.resume();
  43     }
  44     std::cout << "\nmain: done" << std::endl;
  45     return EXIT_SUCCESS;
  46 }