C++ STL源码剖析
1. // Filename: stl_config.h 2. 3. // Comment By: 凝霜 4. // E-mail: [email protected] 5. // Blog: http://blog.csdn.net/mdl13412 6. 7. /* 8. * Copyright (c) 1996-1997 9. * Silicon Graphics Computer Systems, Inc. 10. * 11. * Permission to use, copy, modify, distribute and sell this software 12. * and its documentation for any purpose is hereby granted without fee, 13. * provided that the above copyright notice appear in all copies and 14. * that both that copyright notice and this permission notice appear 15. * in supporting documentation. Silicon Graphics makes no 16. * representations about the suitability of this software for any 17. * purpose. It is provided "as is" without express or implied warranty. 18. */ 19. 20. /* NOTE: This is an internal header file, included by other STL headers. 21. * You should not attempt to use it directly. 22. */ 23. 24. #ifndef __STL_CONFIG_H 25. #define __STL_CONFIG_H 26. 27. // 本配置文件功能表: 28. // (1) 如果不编译器没有定义bool, true, false则定义 29. // (2) 如果编译器不支持drand48()函数则定义__STL_NO_DRAND48 30. // 注: drand48产生双精度的伪随机数, 因为采用了48bit计算, 故名drand48 31. // (3) 如果编译器不支持static members of template classes(模板类静态成员), 32. // 则定义__STL_STATIC_TEMPLATE_MEMBER_BUG 33. // (4) 如果编译器不支持'typename'关键字, 则将'typename'定义为空(null macro) 34. // (5) 如果编译器支持partial specialization of class templates(模板类偏特化), 35. // 则定义__STL_CLASS_PARTIAL_SPECIALIZATION 36. // 参考文献: http://msdn.microsoft.com/en-us/library/9w7t3kf1(v=VS.71).aspx 37. // (6) 如果编译器支持partial ordering of function templates(模板函数特化优先级), 38. // 则定义__STL_FUNCTION_TMPL_PARTIAL_ORDER 39. // 参考资料: http://msdn.microsoft.com/zh-cn/library/zaycz069.aspx 40. // (7) 如果编译器支持calling a function template by providing its template 41. // arguments explicitly(显式指定调用模板函数的模板参数) 42. // 则定义__STL_EXPLICIT_FUNCTION_TMPL_ARGS 43. // (8) 如果编译器支持template members of classes(类模板成员), 44. // 则定义__STL_MEMBER_TEMPLATES 45. // (9) 如果编译器不支持'explicit'关键字, 则将'explicit'定义为空(null macro) 46. // (10) 如果编译器不能根据前一个模板参数设定后面的默认模板参数, 47. // 则定义__STL_LIMITED_DEFAULT_TEMPLATES 48. // (11) 如果编译器处理模板函数的non-type模板参数类型推断有困难, 49. // 则定义__STL_NON_TYPE_TMPL_PARAM_BUG 50. // (12) 如果编译器不支持迭代器使用'->'操作符, 51. // 则定义__SGI_STL_NO_ARROW_OPERATOR 52. // (13) 如果编译器(在当前编译模式下)支持异常, 53. // 则定义__STL_USE_EXCEPTIONS 54. // (14) 如果我们将STL放进命名空间中, 55. // 则定义__STL_USE_NAMESPACES 56. // (15) 如果本STL在SGI的编译器上编译, 并且用户没有选择pthreads或者no threads, 57. // 则默认使用__STL_SGI_THREADS 58. // 注: POSIX thread 简称为pthread, Posix线程是一个POSIX标准线程. 59. // (16) 如果本STL在Win32平台的编译器上使用多线程模式编译, 60. // 则定义__STL_WIN32THREADS 61. // (17) 适当的定义命名空间相关的宏(__STD, __STL_BEGIN_NAMESPACE, 等) 62. // (18) 适当的定义异常相关的宏(__STL_TRY, __STL_UNWIND, 等) 63. // (19) 根据是否定义__STL_ASSERTIONS, 将__stl_assert定义为断言或者空(null macro) 64. 65. #ifdef _PTHREADS 66. # define __STL_PTHREADS 67. #endif 68. 69. // 如果编译器不提供本STL需要的一些功能,则定义__STL_NEED_XXX 70. # if defined(__sgi) && !defined(__GNUC__) 71. # if !defined(_BOOL) 72. # define __STL_NEED_BOOL 73. # endif 74. # if !defined(_TYPENAME_IS_KEYWORD) 75. # define __STL_NEED_TYPENAME 76. # endif 77. # ifdef _PARTIAL_SPECIALIZATION_OF_CLASS_TEMPLATES 78. # define __STL_CLASS_PARTIAL_SPECIALIZATION 79. # endif 80. # ifdef _MEMBER_TEMPLATES 81. # define __STL_MEMBER_TEMPLATES 82. # endif 83. # if !defined(_EXPLICIT_IS_KEYWORD) 84. # define __STL_NEED_EXPLICIT 85. # endif 86. # ifdef __EXCEPTIONS 87. # define __STL_USE_EXCEPTIONS 88. # endif 89. # if (_COMPILER_VERSION >= 721) && defined(_NAMESPACES) 90. # define __STL_USE_NAMESPACES 91. # endif 92. # if !defined(_NOTHREADS) && !defined(__STL_PTHREADS) 93. # define __STL_SGI_THREADS 94. # endif 95. # endif 96. 97. # ifdef __GNUC__ 98. # include <_G_config.h> 99. # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) 100. # define __STL_STATIC_TEMPLATE_MEMBER_BUG 101. # define __STL_NEED_TYPENAME 102. # define __STL_NEED_EXPLICIT 103. # else 104. # define __STL_CLASS_PARTIAL_SPECIALIZATION 105. # define __STL_FUNCTION_TMPL_PARTIAL_ORDER 106. # define __STL_EXPLICIT_FUNCTION_TMPL_ARGS 107. # define __STL_MEMBER_TEMPLATES 108. # endif 109. /* glibc pre 2.0 is very buggy. We have to disable thread for it. 110. It should be upgraded to glibc 2.0 or later. */ 111. # if !defined(_NOTHREADS) && __GLIBC__ >= 2 && defined(_G_USING_THUNKS) 112. # define __STL_PTHREADS 113. # endif 114. # ifdef __EXCEPTIONS 115. # define __STL_USE_EXCEPTIONS 116. # endif 117. # endif 118. 119. // Sun C++ compiler 120. # if defined(__SUNPRO_CC) 121. # define __STL_NEED_BOOL 122. # define __STL_NEED_TYPENAME 123. # define __STL_NEED_EXPLICIT 124. # define __STL_USE_EXCEPTIONS 125. # endif 126. 127. // TODO: 这个我没找到资料, 如果你知道或者有相关资料请联系我, Thank U 128. # if defined(__COMO__) 129. # define __STL_MEMBER_TEMPLATES 130. # define __STL_CLASS_PARTIAL_SPECIALIZATION 131. # define __STL_USE_EXCEPTIONS 132. # define __STL_USE_NAMESPACES 133. # endif 134. 135. // _MSC_VER 定义微软编译器的版本 136. // MS VC++ 10.0 _MSC_VER = 1600 137. // MS VC++ 9.0 _MSC_VER = 1500 138. // MS VC++ 8.0 _MSC_VER = 1400 139. // MS VC++ 7.1 _MSC_VER = 1310 140. // MS VC++ 7.0 _MSC_VER = 1300 141. // MS VC++ 6.0 _MSC_VER = 1200 142. // MS VC++ 5.0 _MSC_VER = 1100 143. # if defined(_MSC_VER) 144. # if _MSC_VER > 1000 145. # include <yvals.h> 146. # else 147. # define __STL_NEED_BOOL 148. # endif 149. # define __STL_NO_DRAND48 150. # define __STL_NEED_TYPENAME 151. # if _MSC_VER < 1100 152. # define __STL_NEED_EXPLICIT 153. # endif 154. # define __STL_NON_TYPE_TMPL_PARAM_BUG 155. # define __SGI_STL_NO_ARROW_OPERATOR 156. # ifdef _CPPUNWIND 157. # define __STL_USE_EXCEPTIONS 158. # endif 159. # ifdef _MT 160. # define __STL_WIN32THREADS 161. # endif 162. # endif 163. 164. # if defined(__BORLANDC__) 165. # define __STL_NO_DRAND48 166. # define __STL_NEED_TYPENAME 167. # define __STL_LIMITED_DEFAULT_TEMPLATES 168. # define __SGI_STL_NO_ARROW_OPERATOR 169. # define __STL_NON_TYPE_TMPL_PARAM_BUG 170. # ifdef _CPPUNWIND 171. # define __STL_USE_EXCEPTIONS 172. # endif 173. # ifdef __MT__ 174. # define __STL_WIN32THREADS 175. # endif 176. # endif 177. 178. 179. # if defined(__STL_NEED_BOOL) 180. typedef int bool; 181. # define true 1 182. # define false 0 183. # endif 184. 185. # ifdef __STL_NEED_TYPENAME 186. # define typename 187. # endif 188. 189. # ifdef __STL_NEED_EXPLICIT 190. # define explicit 191. # endif 192. 193. # ifdef __STL_EXPLICIT_FUNCTION_TMPL_ARGS 194. # define __STL_NULL_TMPL_ARGS <> 195. # else 196. # define __STL_NULL_TMPL_ARGS 197. # endif 198. 199. # ifdef __STL_CLASS_PARTIAL_SPECIALIZATION 200. # define __STL_TEMPLATE_NULL template<> 201. # else 202. # define __STL_TEMPLATE_NULL 203. # endif 204. 205. // __STL_NO_NAMESPACES is a hook so that users can disable namespaces 206. // without having to edit library headers. 207. # if defined(__STL_USE_NAMESPACES) && !defined(__STL_NO_NAMESPACES) 208. # define __STD std 209. # define __STL_BEGIN_NAMESPACE namespace std { 210. # define __STL_END_NAMESPACE } 211. # define __STL_USE_NAMESPACE_FOR_RELOPS 212. # define __STL_BEGIN_RELOPS_NAMESPACE namespace std { 213. # define __STL_END_RELOPS_NAMESPACE } 214. # define __STD_RELOPS std 215. # else 216. # define __STD 217. # define __STL_BEGIN_NAMESPACE 218. # define __STL_END_NAMESPACE 219. # undef __STL_USE_NAMESPACE_FOR_RELOPS 220. # define __STL_BEGIN_RELOPS_NAMESPACE 221. # define __STL_END_RELOPS_NAMESPACE 222. # define __STD_RELOPS 223. # endif 224. 225. # ifdef __STL_USE_EXCEPTIONS 226. # define __STL_TRY try 227. # define __STL_CATCH_ALL catch(...) 228. # define __STL_RETHROW throw 229. # define __STL_NOTHROW throw() 230. # define __STL_UNWIND(action) catch(...) { action; throw; } 231. # else 232. # define __STL_TRY 233. # define __STL_CATCH_ALL if (false) 234. # define __STL_RETHROW 235. # define __STL_NOTHROW 236. # define __STL_UNWIND(action) 237. # endif 238. 239. #ifdef __STL_ASSERTIONS 240. # include <stdio.h> 241. # define __stl_assert(expr) \ 242. if (!(expr)) { fprintf(stderr, "%s:%d STL assertion failure: %s\n", \ 243. __FILE__, __LINE__, # expr); abort(); } 244. #else 245. # define __stl_assert(expr) 246. #endif 247. 248. #endif /* __STL_CONFIG_H */ 249. 250. // Local Variables: 251. // mode:C++ 252. // End:
1. // Filename: defalloc.h 2. 3. // Comment By: 凝霜 4. // E-mail: [email protected] 5. // Blog: http://blog.csdn.net/mdl13412 6. 7. /* 8. * 9. * Copyright (c) 1994 10. * Hewlett-Packard Company 11. * 12. * Permission to use, copy, modify, distribute and sell this software 13. * and its documentation for any purpose is hereby granted without fee, 14. * provided that the above copyright notice appear in all copies and 15. * that both that copyright notice and this permission notice appear 16. * in supporting documentation. Hewlett-Packard Company makes no 17. * representations about the suitability of this software for any 18. * purpose. It is provided "as is" without express or implied warranty. 19. * 20. */ 21. 22. // 这个文件提供原始的HP默认allocator, 仅仅是为了向后兼容 23. // 24. // 不要使用这个文件,除非你使用一个需要HP-style allocator的旧容器 25. // SGI STL使用一个不同的allocator接口 26. // SGI-style的allocator不针对对象类型进行参数化, 他使用void *指针 27. 28. #ifndef DEFALLOC_H 29. #define DEFALLOC_H 30. 31. #include <new.h> 32. #include <stddef.h> 33. #include <stdlib.h> 34. #include <limits.h> 35. #include <iostream.h> 36. #include <algobase.h> 37. 38. // 如果内存分配失败, 则直接退出程序 39. template <class T> 40. inline T* allocate(ptrdiff_t size, T*) 41. { 42. set_new_handler(0); 43. T* tmp = (T*)(::operator new((size_t)(size * sizeof(T)))); 44. if (tmp == 0) { 45. cerr << "out of memory" << endl; 46. exit(1); 47. } 48. return tmp; 49. } 50. 51. template <class T> 52. inline void deallocate(T* buffer) 53. { 54. ::operator delete(buffer); 55. } 56. 57. // 标准的STL allocator接口 58. template <class T> 59. class allocator 60. { 61. public: 62. // STL type_traits需要的标准定义 63. typedef T value_type; 64. typedef T* pointer; 65. typedef const T* const_pointer; 66. typedef T& reference; 67. typedef const T& const_reference; 68. typedef size_t size_type; 69. typedef ptrdiff_t difference_type; 70. 71. 72. pointer allocate(size_type n) 73. { 74. return ::allocate((difference_type)n, (pointer)0); 75. } 76. void deallocate(pointer p) { ::deallocate(p); } 77. pointer address(reference x) { return (pointer)&x; } 78. const_pointer const_address(const_reference x) 79. { 80. return (const_pointer)&x; 81. } 82. // 83. size_type init_page_size() 84. { 85. return max(size_type(1), size_type(4096/sizeof(T))); 86. } 87. size_type max_size() const 88. { 89. return max(size_type(1), size_type(UINT_MAX/sizeof(T))); 90. } 91. }; 92. 93. // 仅使用void *类型的指针 94. class allocator<void> 95. { 96. public: 97. typedef void* pointer; 98. }; 99. 100. #endif
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