| 1 | #include <boost/interprocess/managed_mapped_file.hpp>
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| 2 | #include <boost/interprocess/containers/vector.hpp>
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| 3 | #include <boost/interprocess/containers/list.hpp>
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| 4 | #include <boost/interprocess/offset_ptr.hpp>
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| 5 | #include <boost/interprocess/allocators/allocator.hpp>
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| 6 |
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| 7 | //#include <boost/interprocess/containers/vector.hpp>
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| 8 | //#include <boost/interprocess/allocators/node_allocator.hpp>
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| 9 |
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| 10 |
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| 11 | using namespace boost::intrusive;
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| 12 | namespace ip= boost::interprocess;
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| 13 |
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| 14 |
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| 15 | class channel_t : public list_base_hook< void_pointer< ip::offset_ptr<void> > >
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| 16 | {
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| 17 |
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| 18 | public:
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| 19 | char xxx[4];
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| 20 | int ch_order;
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| 21 | int ch_id;
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| 22 |
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| 23 | channel_t(int _ch_order, int _ch_id) : ch_order(_ch_order), ch_id(_ch_id) {}
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| 24 |
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| 25 | channel_t(const channel_t& other) : ch_order(other.ch_order), ch_id(other.ch_id) {
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| 26 | printf("copy constructor 0x%x -> 0x%x \n", (long long)&other, (long long) this);
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| 27 | }
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| 28 |
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| 29 | channel_t() {}
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| 30 |
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| 31 | void set (unsigned int a, unsigned int b) {
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| 32 | ch_order=a;
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| 33 | ch_id=b;
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| 34 | xxx[0]='A';
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| 35 | xxx[1]='B';
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| 36 | xxx[2]='C';
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| 37 | xxx[3]='C';
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| 38 | }
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| 39 | };
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| 40 |
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| 41 |
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| 42 |
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| 43 |
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| 44 | typedef ip::allocator<channel_t, ip::managed_mapped_file::segment_manager> shm_allocator_t;
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| 45 |
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| 46 | typedef ip::list<channel_t, shm_allocator_t> chlist_t;
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| 47 |
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| 48 |
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| 49 | int main_create (int argc, char **argv)
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| 50 | {
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| 51 |
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| 52 |
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| 53 |
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| 54 |
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| 55 | try{
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| 56 | //Shared memory front-end that is able to construct objects
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| 57 | //associated with a c-string. Erase previous shared memory with the name
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| 58 | //to be used and create the memory segment at the specified address and initialize resources
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| 59 | ip::managed_mapped_file segment(ip::create_only,"/tmp/MyMappedFile", 4096*4);
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| 60 | //Alias an STL compatible allocator of ints that allocates ints from the managed
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| 61 | //shared memory segment. This allocator will allow to place containers
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| 62 | //in managed shared memory segments
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| 63 |
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| 64 | //Initialize shared memory STL-compatible allocator
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| 65 | shm_allocator_t shm_alloc (segment.get_segment_manager());
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| 66 |
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| 67 |
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| 68 | typedef ip::vector<channel_t, shm_allocator_t> shm_vector_t;
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| 69 | unsigned int i;
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| 70 |
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| 71 | //Construct a list in shared memory
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| 72 | chlist_t *list =
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| 73 | segment.construct<chlist_t>("ChannelInfo")(shm_alloc);
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| 74 |
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| 75 | for(int i = 0; i < 100; ++i) {
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| 76 | channel_t c(i, i+100);
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| 77 | list->push_front(c);
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| 78 | }
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| 79 |
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| 80 | chlist_t::iterator it=list->begin();
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| 81 | for(;it!=list->end();++it) {
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| 82 | channel_t d= *it;
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| 83 | printf("ch_order=%d ch_id=%d\n", d.ch_order, d.ch_id);
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| 84 | }
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| 85 | }
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| 86 | catch(...){
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| 87 | throw;
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| 88 | }
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| 89 | return 0;
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| 90 | }
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| 91 |
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| 92 |
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| 93 |
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| 94 | int main_test (int argc, char **argv)
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| 95 | {
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| 96 |
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| 97 |
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| 98 |
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| 99 |
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| 100 | try{
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| 101 | //Shared memory front-end that is able to construct objects
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| 102 | //associated with a c-string. Erase previous shared memory with the name
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| 103 | //to be used and create the memory segment at the specified address and initialize resources
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| 104 | ip::managed_mapped_file segment(ip::open_only,"/tmp/MyMappedFile");
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| 105 | //Alias an STL compatible allocator of ints that allocates ints from the managed
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| 106 | //shared memory segment. This allocator will allow to place containers
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| 107 | //in managed shared memory segments
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| 108 |
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| 109 |
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| 110 |
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| 111 |
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| 112 | //Initialize shared memory STL-compatible allocator
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| 113 | shm_allocator_t shm_alloc (segment.get_segment_manager());
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| 114 |
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| 115 |
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| 116 | //Find the vector using the c-string name
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| 117 | chlist_t *list = segment.find<chlist_t>("ChannelInfo").first;
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| 118 | printf("list=0x%x\n", (long long)list);
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| 119 | unsigned int i;
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| 120 | chlist_t::iterator it=list->begin();
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| 121 | for(;it!=list->end();++it) {
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| 122 | channel_t d= *it;
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| 123 | printf("ch_order=%d ch_id=%d\n", d.ch_order, d.ch_id);
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| 124 | }
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| 125 | channel_t& d= *list->begin();
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| 126 | }
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| 127 | catch(...){
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| 128 | throw;
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| 129 | }
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| 130 | return 0;
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| 131 | }
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| 132 |
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| 133 |
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| 134 | int main(int argc, char**argv) {
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| 135 |
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| 136 | switch(atoi(argv[1])) {
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| 137 | case 1:
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| 138 | return main_create(argc,argv);
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| 139 | break;
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| 140 | case 2:
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| 141 | return main_test(argc,argv);
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| 142 | break;
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| 143 |
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| 144 | }
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| 145 |
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| 146 | }
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