Go to the documentation of this file.00001
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00014 #ifndef ACE_PAGEFILE_MEMORY_POOL_H
00015 #define ACE_PAGEFILE_MEMORY_POOL_H
00016
00017 #include "ace/pre.h"
00018
00019 #include "ace/ACE_export.h"
00020
00021 #if !defined (ACE_LACKS_PRAGMA_ONCE)
00022 # pragma once
00023 #endif
00024
00025 #if defined (ACE_WIN32) && !defined (ACE_HAS_PHARLAP)
00026
00027 #include "ace/ACE.h"
00028 #include "ace/os_include/sys/os_mman.h"
00029
00030 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
00031
00032
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00039
00040 class ACE_Export ACE_Pagefile_Memory_Pool_Options
00041 {
00042 public:
00043
00044 ACE_Pagefile_Memory_Pool_Options (
00045 void *base_addr = ACE_DEFAULT_PAGEFILE_POOL_BASE,
00046 size_t max_size = ACE_DEFAULT_PAGEFILE_POOL_SIZE);
00047
00048
00049 void *base_addr_;
00050
00051
00052 size_t max_size_;
00053 };
00054
00055
00056
00057
00058
00059
00060
00061 class ACE_Export ACE_Pagefile_Memory_Pool
00062 {
00063 public:
00064 typedef ACE_Pagefile_Memory_Pool_Options OPTIONS;
00065
00066
00067 ACE_Pagefile_Memory_Pool (const ACE_TCHAR *backing_store_name = 0,
00068 const OPTIONS *options = 0);
00069
00070
00071 virtual ~ACE_Pagefile_Memory_Pool (void);
00072
00073
00074 void *init_acquire (size_t nbytes,
00075 size_t &rounded_bytes,
00076 int &first_time);
00077
00078
00079
00080 void *acquire (size_t nbytes,
00081 size_t &rounded_bytes);
00082
00083
00084 int release (int destroy = 1);
00085
00086
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00089
00090
00091 virtual int seh_selector (void *);
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00100
00101
00102
00103 int remap (void *addr);
00104
00105
00106 size_t round_to_page_size (size_t nbytes);
00107
00108
00109 size_t round_to_chunk_size (size_t nbytes);
00110
00111
00112 int sync (ssize_t = -1, int = MS_SYNC);
00113 int sync (void *, size_t, int = MS_SYNC);
00114 int protect (ssize_t = -1, int = PROT_RDWR);
00115 int protect (void *, size_t, int = PROT_RDWR);
00116
00117
00118
00119 virtual void *base_addr (void) const;
00120
00121 void dump (void) const {}
00122
00123 protected:
00124
00125
00126
00127
00128
00129
00130 int map (int &firstTime, size_t appendBytes = 0);
00131
00132
00133 int unmap (void);
00134
00135 private:
00136
00137
00138
00139
00140
00141
00142 class Control_Block
00143 {
00144 public:
00145
00146 void *req_base_;
00147
00148
00149 void *mapped_base_;
00150
00151
00152
00153
00154
00155
00156 class Shared_Control_Block
00157 {
00158 public:
00159
00160 size_t max_size_;
00161
00162
00163 size_t mapped_size_;
00164
00165
00166 ptrdiff_t free_offset_;
00167
00168
00169 size_t free_size_;
00170 };
00171
00172 Shared_Control_Block sh_;
00173 };
00174
00175
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00177
00178
00179
00180 Control_Block local_cb_;
00181
00182
00183 Control_Block *shared_cb_;
00184
00185
00186 ACE_HANDLE object_handle_;
00187
00188
00189 size_t page_size_;
00190
00191
00192 ACE_TCHAR backing_store_name_[MAXPATHLEN];
00193 };
00194
00195 ACE_END_VERSIONED_NAMESPACE_DECL
00196
00197 #endif
00198
00199 #if defined (__ACE_INLINE__)
00200 #include "ace/Pagefile_Memory_Pool.inl"
00201 #endif
00202
00203 #include "ace/post.h"
00204 #endif