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00013 #ifndef ACE_MEM_MAP_H
00014 #define ACE_MEM_MAP_H
00015
00016 #include "ace/pre.h"
00017
00018 #include "ace/ACE_export.h"
00019
00020 #if !defined (ACE_LACKS_PRAGMA_ONCE)
00021 # pragma once
00022 #endif
00023
00024 #include "ace/Global_Macros.h"
00025 #include "ace/Copy_Disabled.h"
00026 #include "ace/os_include/sys/os_mman.h"
00027 #include "ace/os_include/os_limits.h"
00028 #include "ace/os_include/os_fcntl.h"
00029 #include "ace/Default_Constants.h"
00030
00031 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
00032
00033
00034
00035
00036
00037
00038
00039
00040
00041 class ACE_Export ACE_Mem_Map : private ACE_Copy_Disabled
00042 {
00043 public:
00044
00045
00046
00047 ACE_Mem_Map (void);
00048
00049
00050
00051 ACE_Mem_Map (ACE_HANDLE handle,
00052 size_t length = static_cast<size_t> (-1),
00053 int prot = PROT_RDWR,
00054 int share = ACE_MAP_PRIVATE,
00055 void *addr = 0,
00056 ACE_OFF_T offset = 0,
00057 LPSECURITY_ATTRIBUTES sa = 0);
00058
00059
00060 ACE_Mem_Map (const ACE_TCHAR *filename,
00061 size_t length = static_cast<size_t> (-1),
00062 int flags = O_RDWR | O_CREAT,
00063 mode_t mode = ACE_DEFAULT_FILE_PERMS,
00064 int prot = PROT_RDWR,
00065 int share = ACE_MAP_PRIVATE,
00066 void *addr = 0,
00067 ACE_OFF_T offset = 0,
00068 LPSECURITY_ATTRIBUTES sa = 0);
00069
00070
00071
00072 int map (ACE_HANDLE handle,
00073 size_t length = static_cast<size_t> (-1),
00074 int prot = PROT_RDWR,
00075 int share = ACE_MAP_PRIVATE,
00076 void *addr = 0,
00077 ACE_OFF_T offset = 0,
00078 LPSECURITY_ATTRIBUTES sa = 0);
00079
00080
00081 int map (size_t length = static_cast<size_t> (-1),
00082 int prot = PROT_RDWR,
00083 int share = ACE_MAP_PRIVATE,
00084 void *addr = 0,
00085 ACE_OFF_T offset = 0,
00086 LPSECURITY_ATTRIBUTES sa = 0);
00087
00088
00089 int map (const ACE_TCHAR *filename,
00090 size_t length = static_cast<size_t> (-1),
00091 int flags = O_RDWR | O_CREAT,
00092 mode_t mode = ACE_DEFAULT_FILE_PERMS,
00093 int prot = PROT_RDWR,
00094 int share = ACE_MAP_PRIVATE,
00095 void *addr = 0,
00096 ACE_OFF_T offset = 0,
00097 LPSECURITY_ATTRIBUTES sa = 0);
00098
00099
00100 ~ACE_Mem_Map (void);
00101
00102
00103 int open (const ACE_TCHAR *filename,
00104 int flags = O_RDWR | O_CREAT,
00105 mode_t perms = ACE_DEFAULT_FILE_PERMS,
00106 LPSECURITY_ATTRIBUTES sa = 0);
00107
00108
00109 int close (void);
00110
00111
00112 int close_handle (void);
00113
00114
00115
00116
00117
00118
00119 int close_filemapping_handle (void);
00120
00121
00122
00123 int operator () (void *&addr);
00124
00125
00126 void *addr (void) const;
00127
00128
00129
00130 size_t size (void) const;
00131
00132
00133 int unmap (ssize_t len = -1);
00134
00135
00136 int unmap (void *addr, ssize_t len);
00137
00138
00139
00140
00141
00142
00143 int sync (size_t len, int flags = MS_SYNC);
00144
00145
00146
00147
00148
00149 int sync (int flags = MS_SYNC);
00150
00151
00152
00153 int sync (void *addr, size_t len, int flags = MS_SYNC);
00154
00155
00156
00157
00158
00159 int protect (size_t len, int prot = PROT_RDWR);
00160
00161
00162
00163
00164
00165 int protect (int prot = PROT_RDWR);
00166
00167
00168
00169 int protect (void *addr, size_t len, int prot = PROT_RDWR);
00170
00171
00172 int remove (void);
00173
00174
00175 int advise (int behavior, int len = -1);
00176
00177
00178 ACE_HANDLE handle (void) const;
00179
00180
00181 const ACE_TCHAR *filename (void) const;
00182
00183
00184 void dump (void) const;
00185
00186
00187 ACE_ALLOC_HOOK_DECLARE;
00188
00189 private:
00190
00191
00192
00193 int map_it (ACE_HANDLE handle,
00194 size_t len = static_cast<size_t> (-1),
00195 int prot = PROT_RDWR,
00196 int share = MAP_SHARED,
00197 void *addr = 0,
00198 ACE_OFF_T offset = 0,
00199 LPSECURITY_ATTRIBUTES sa = 0);
00200
00201 private:
00202
00203
00204 void *base_addr_;
00205
00206
00207 ACE_TCHAR filename_[MAXPATHLEN + 1];
00208
00209
00210 size_t length_;
00211
00212
00213 ACE_HANDLE handle_;
00214
00215
00216 ACE_HANDLE file_mapping_;
00217
00218
00219
00220 bool close_handle_;
00221
00222 };
00223
00224 ACE_END_VERSIONED_NAMESPACE_DECL
00225
00226 #if defined (__ACE_INLINE__)
00227 #include "ace/Mem_Map.inl"
00228 #endif
00229
00230 #include "ace/post.h"
00231
00232 #endif