{"id":1432,"date":"2018-06-21T20:46:07","date_gmt":"2018-06-21T12:46:07","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1432"},"modified":"2018-06-21T20:46:07","modified_gmt":"2018-06-21T12:46:07","slug":"%e7%94%a8boost%e5%9c%a8%e5%85%b1%e4%ba%ab%e5%86%85%e5%ad%98%e4%b8%8a%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa%e5%a4%8d%e6%9d%82%e7%9a%84map","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1432","title":{"rendered":"\u7528boost\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u521b\u5efa\u4e00\u4e2a\u590d\u6742\u7684map"},"content":{"rendered":"
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\u7528boost\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u521b\u5efa\u4e00\u4e2a\u590d\u6742\u7684map<\/h1>\n<\/div>\n
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2013\u5e7405\u670804\u65e5 18:15:52<\/span><\/p>\n
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boost\u7684interprocess\u7c7b\u63d0\u4f9b\u4e86\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u521b\u5efa\u590d\u6742\u6570\u636e\u5bf9\u8c61\u548c\u5bb9\u5668\u7684\u65b9\u5f0f\uff0c\u4ee5\u4e0b\u662f\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u521b\u5efa\u4e00\u4e2astring map\u7684\u4ee3\u7801\uff0c\u4ee3\u7801\u572832\u4f4dlinux\u4e0a\u6d4b\u8bd5\u901a\u8fc7<\/p>\n
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[cpp]<\/strong>\u00a0view plain<\/a>copy<\/a><\/p>\n
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  1. #include\u00a0<boost\/interprocess\/managed_shared_memory.hpp><\/span><\/li>\n
  2. #include\u00a0<boost\/interprocess\/allocators\/allocator.hpp><\/span><\/li>\n
  3. #include\u00a0<boost\/interprocess\/containers\/map.hpp><\/span><\/li>\n
  4. #include\u00a0<boost\/interprocess\/containers\/vector.hpp><\/span><\/li>\n
  5. #include\u00a0<boost\/interprocess\/containers\/string.hpp><\/span><\/li>\n
  6. #include\u00a0<iostream><\/span><\/li>\n
  7. <\/li>\n
  8. using<\/span>\u00a0namespace<\/span>\u00a0boost::interprocess;<\/li>\n
  9. <\/li>\n
  10. \/\/\u7c7b\u578b\u548callocator\u7684\u5b9a\u4e49\uff0c\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u65f6\u9700\u8981\u4f7f\u7528boost::interprocess\u4e2d<\/span><\/li>\n
  11. \/\/\u91cd\u65b0\u5b9e\u73b0\u7684\u5bb9\u5668\u800c\u4e0d\u80fd\u4f7f\u7528\u6807\u51c6\u5bb9\u5668<\/span><\/li>\n
  12. typedef<\/span>\u00a0managed_shared_memory::segment_manager\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0segment_manager_t;<\/li>\n
  13. typedef<\/span>\u00a0allocator<void<\/span>,\u00a0segment_manager_t>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0void_allocator;<\/li>\n
  14. typedef<\/span>\u00a0allocator<int<\/span>,\u00a0segment_manager_t>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int_allocator;<\/li>\n
  15. typedef<\/span>\u00a0vector<int<\/span>,\u00a0int_allocator>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int_vector;<\/li>\n
  16. typedef<\/span>\u00a0allocator<int_vector,\u00a0segment_manager_t>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int_vector_allocator;<\/li>\n
  17. typedef<\/span>\u00a0vector<int_vector,\u00a0int_vector_allocator>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int_vector_vector;<\/li>\n
  18. typedef<\/span>\u00a0allocator<char<\/span>,\u00a0segment_manager_t>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0char_allocator;<\/li>\n
  19. typedef<\/span>\u00a0basic_string<char<\/span>,\u00a0std::char_traits<char<\/span>>,\u00a0char_allocator>\u00a0\u00a0\u00a0char_string;<\/li>\n
  20. <\/li>\n
  21. class<\/span>\u00a0complex_data<\/li>\n
  22. {<\/li>\n
  23. \u00a0\u00a0int<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0id_;<\/li>\n
  24. \u00a0\u00a0char_string\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0char_string_;<\/li>\n
  25. \u00a0\u00a0int_vector_vector\u00a0int_vector_vector_;<\/li>\n
  26. <\/li>\n
  27. public<\/span>:<\/li>\n
  28. \u00a0\u00a0\/\/\u56e0\u4e3avoid_allocator\u80fd\u591f\u8f6c\u6362\u4e3a\u4efb\u4f55\u7c7b\u578b\u7684allocator<T>,\u00a0\u6240\u4ee5\u6211\u4eec\u80fd\u591f\u7b80\u5355\u7684\u5728\u6784\u9020\u51fd\u6570\u4e2d<\/span><\/li>\n
  29. \u00a0\u00a0\/\/\u4f7f\u7528void_allocator\u6765\u521d\u59cb\u5316\u6240\u6709\u7684\u5185\u90e8\u5bb9\u5668<\/span><\/li>\n
  30. \u00a0\u00a0complex_data(int<\/span>\u00a0id,\u00a0const<\/span>\u00a0char<\/span>\u00a0*name,\u00a0const<\/span>\u00a0void_allocator\u00a0&void_alloc)<\/li>\n
  31. \u00a0\u00a0\u00a0\u00a0:\u00a0id_(id),\u00a0char_string_(name,\u00a0void_alloc),\u00a0int_vector_vector_(void_alloc)<\/li>\n
  32. \u00a0\u00a0{}<\/li>\n
  33. \u00a0\u00a0~complex_data(){}<\/li>\n
  34. };<\/li>\n
  35. <\/li>\n
  36. \/\/\u5c06map\u7684key\u5b9a\u4e49\u4e3a\u4e00\u4e2astring\uff0c\u800c\u628amap\u7684value\u5b9a\u4e49\u4e3a\u4e00\u4e2acomplex_data\u5bf9\u8c61<\/span><\/li>\n
  37. typedef<\/span>\u00a0std::pair<const<\/span>\u00a0char_string,\u00a0complex_data>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0map_value_type;<\/li>\n
  38. typedef<\/span>\u00a0allocator<map_value_type,\u00a0segment_manager_t>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0map_value_type_allocator;<\/li>\n
  39. typedef<\/span>\u00a0map<\u00a0char_string,\u00a0complex_data<\/li>\n
  40. ,\u00a0std::less<char_string>,\u00a0map_value_type_allocator>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0complex_map_type;<\/li>\n
  41. <\/li>\n
  42. int<\/span>\u00a0main\u00a0()<\/li>\n
  43. {<\/li>\n
  44. \u00a0\u00a0\/\/\u5728\u7a0b\u5e8f\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u65f6\u5019\u79fb\u9664\u540c\u540d\u7684\u5171\u4eab\u5185\u5b58<\/span><\/li>\n
  45. \u00a0\u00a0\/\/\u5982\u679c\u53ea\u662f\u8bfb\u5176\u4ed6\u7a0b\u5e8f\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u5757\u5219\u4e0d\u8be5\u5305\u542bremover<\/span><\/li>\n
  46. \u00a0\u00a0struct<\/span>\u00a0shm_remove<\/li>\n
  47. \u00a0\u00a0{<\/li>\n
  48. \u00a0\u00a0\u00a0\u00a0shm_remove()\u00a0{\u00a0shared_memory_object::remove(“MySharedMemory”<\/span>);\u00a0}<\/li>\n
  49. \u00a0\u00a0\u00a0\u00a0~shm_remove(){\u00a0shared_memory_object::remove(“MySharedMemory”<\/span>);\u00a0}<\/li>\n
  50. \u00a0\u00a0}\u00a0remover;<\/li>\n
  51. \u00a0\u00a0\/\/\u521b\u5efa\u5171\u4eab\u5185\u5b58\uff0c\u6839\u636e\u6d4b\u8bd5\uff0c\u572832\u4f4d\u7684linux\u4e0a\uff0c\u5355\u5757\u547d\u540d\u7684\u5171\u4eab\u5185\u5b58\u5927\u5c0f<\/span><\/li>\n
  52. \u00a0\u00a0\/\/\u6700\u5927\u4e3a2^31-1\uff0c\u5982\u679c\u662f\u8bfb\u5176\u4ed6\u7a0b\u5e8f\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\uff0c\u5219\u6b64\u53e5\u5e94\u5199\u4e3a<\/span><\/li>\n
  53. \u00a0\u00a0\/\/managed_shared_memory\u00a0segment(open_only,\u00a0“MySharedMemory”);<\/span><\/li>\n
  54. \u00a0\u00a0managed_shared_memory\u00a0segment(create_only,“MySharedMemory”<\/span>,\u00a065536);<\/li>\n
  55. <\/li>\n
  56. \u00a0\u00a0\/\/\u4e00\u4e2a\u80fd\u591f\u8f6c\u6362\u4e3a\u4efb\u4f55allocator<T,\u00a0segment_manager_t>\u7c7b\u578b\u7684allocator\u00a0<\/span><\/li>\n
  57. \u00a0\u00a0void_allocator\u00a0alloc_inst\u00a0(segment.get_segment_manager());<\/li>\n
  58. <\/li>\n
  59. \u00a0\u00a0\/\/\u5728\u5171\u4eab\u5185\u5b58\u4e0a\u521b\u5efamap<\/span><\/li>\n
  60. \u00a0\u00a0\/\/\u5982\u679cmap\u5df2\u7531\u5176\u4ed6\u7a0b\u5e8f\u521b\u5efa\uff0c\u6216\u8005\u4e0d\u786e\u5b9amap\u662f\u5426\u5df2\u521b\u5efa\uff0c\u5e94\u5982\u4e0b\uff1a<\/span><\/li>\n
  61. \u00a0\u00a0\/\/complex_map_type\u00a0*mymap\u00a0=\u00a0segment.find_or_construct<complex_map_type><\/span><\/li>\n
  62. \u00a0\u00a0complex_map_type\u00a0*mymap\u00a0=\u00a0segment.construct<complex_map_type><\/li>\n
  63. \u00a0\u00a0\u00a0\u00a0(“MyMap”<\/span>)(std::less<char_string>(),\u00a0alloc_inst);<\/li>\n
  64. <\/li>\n
  65. \u00a0\u00a0for<\/span>(int<\/span>\u00a0i\u00a0=\u00a00;\u00a0i\u00a0<\u00a0100;\u00a0++i){<\/li>\n
  66. \u00a0\u00a0\u00a0\u00a0\/\/key(string)\u00a0\u548cvalue(complex_data)\u00a0\u90fd\u9700\u8981\u5728\u4ed6\u4eec\u7684\u6784\u9020\u51fd\u6570\u4e2d<\/span><\/li>\n
  67. \u00a0\u00a0\u00a0\u00a0\/\/\u5305\u542b\u4e00\u4e2aallocator<\/span><\/li>\n
  68. \u00a0\u00a0\u00a0\u00a0char<\/span>\u00a0tmp[16]\u00a0=\u00a0“”<\/span>;<\/li>\n
  69. \u00a0\u00a0\u00a0\u00a0sprintf(tmp,\u00a0“test%d”<\/span>,\u00a0i);<\/li>\n
  70. \u00a0\u00a0\u00a0\u00a0char_string\u00a0\u00a0key_object(tmp,\u00a0alloc_inst);<\/li>\n
  71. \u00a0\u00a0\u00a0\u00a0complex_data\u00a0mapped_object(i,\u00a0“default_name”<\/span>,\u00a0alloc_inst);<\/li>\n
  72. \u00a0\u00a0\u00a0\u00a0map_value_type\u00a0value(key_object,\u00a0mapped_object);<\/li>\n
  73. \u00a0\u00a0\u00a0\u00a0\/\/\u5411map\u4e2d\u63d2\u503c<\/span><\/li>\n
  74. \u00a0\u00a0\u00a0\u00a0mymap->insert(value);<\/li>\n
  75. \u00a0\u00a0}<\/li>\n
  76. <\/li>\n
  77. \u00a0\u00a0return<\/span>\u00a00;<\/li>\n
  78. }<\/li>\n<\/ol>\n<\/div>\n

    \u6b64\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2amap\uff0c\u5176\u4e2dkey\u4e3astring\uff0cvalue\u4e3a\u4e00\u4e2a\u590d\u6742\u7684\u7ed3\u6784\uff0c\u5176\u4e2d\u8fd8\u5305\u542b\u4e86\u4e00\u4e2aint vector<\/p>\n

    \u56e0\u4e3a\u5de5\u7a0b\u9700\u8981\uff0c\u53ea\u5bf9boost\u53c2\u8003\u6587\u6863\u4e2d\u5efa\u7acb\u666e\u901a\u5bb9\u5668\u7684\u5bb9\u5668\u505a\u4e86\u5b9e\u9a8c\uff0c\u66f4\u590d\u6742\u7684\u5bb9\u5668\u9700\u53c2\u7167boost\u6587\u6863\u8fdb\u884c<\/p>\n

    \u6b64\u7a0b\u5e8f\u4f7f\u7528boost\u7248\u672c\u4e3a1.42.0<\/strong><\/p>\n

    \u7f16\u8bd1\u65f6\u65e0\u9700\u5bf9boost\u8fdb\u884c\u5355\u72ec\u7f16\u8bd1\uff0c\u53ea\u9700\u5f15\u7528\u76f8\u5e94\u7684\uff08hpp\uff09\u5934\u6587\u4ef6\u5373\u53ef\u4f7f\u7528\uff0c\u7f16\u8bd1\u65f6\u9700\u8fde\u63a5\u5e93”-lrt”,\u5982\u679c\u572864\u4f4d\u7cfb\u7edf\u4e0a\u7f16\u8bd1\uff0c\u9700\u8981\u8fde\u63a5-lpthread<\/strong><\/p>\n<\/div>\n<\/div>\n<\/article>\n

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    \u4e2a\u4eba\u5206\u7c7b\uff1a<\/span>\u00a0c++<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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