1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Shared_Memory_MM.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#if !defined (ACE_SHARED_MALLOC_MM_H)
#define ACE_SHARED_MALLOC_MM_H
#include "ace/Shared_Memory.h"
#include "ace/Mem_Map.h"
class ACE_Export ACE_Shared_Memory_MM : public ACE_Shared_Memory
// = TITLE
// Shared memory wrapper based on MMAP.
{
public:
// = Initialization and termination methods.
ACE_Shared_Memory_MM (void);
ACE_Shared_Memory_MM (ACE_HANDLE handle,
int length = -1,
int prot = PROT_RDWR,
int share = MAP_PRIVATE,
char *addr = 0,
off_t pos = 0);
ACE_Shared_Memory_MM (char file_name[],
int len = -1,
int flags = O_RDWR | O_CREAT,
int mode = ACE_DEFAULT_FILE_PERMS,
int prot = PROT_RDWR,
int share = MAP_SHARED,
char *addr = 0, off_t pos = 0);
int open (ACE_HANDLE handle,
int length = -1,
int prot = PROT_RDWR,
int share = MAP_PRIVATE,
char *addr = 0,
off_t pos = 0);
int open (char file_name[],
int len = -1,
int flags = O_RDWR | O_CREAT,
int mode = ACE_DEFAULT_FILE_PERMS,
int prot = PROT_RDWR,
int share = MAP_SHARED,
char *addr = 0,
off_t pos = 0);
virtual int close (void);
// Close down the shared memory segment.
virtual int remove (void);
// Remove the shared memory segment and the underlying file.
// = Allocation and deallocation methods.
virtual void *malloc (size_t size = 0);
// Create a new chuck of memory containing <size> bytes.
virtual int free (void *p);
// Free a chuck of memory allocated by <ACE_Shared_Memory_MM::malloc>.
virtual int get_segment_size (void) const;
// Return the size of the shared memory segment.
virtual ACE_HANDLE get_id (void) const;
// Return the ID of the shared memory segment (i.e., an ACE_HANDLE).
void dump (void) const;
// Dump the state of an object.
ACE_ALLOC_HOOK_DECLARE;
// Declare the dynamic allocation hooks.
private:
ACE_Mem_Map shared_memory_;
// This version is implemented with memory-mapped files.
};
#if defined (__ACE_INLINE__)
#include "ace/Shared_Memory_MM.i"
#endif /* __ACE_INLINE__ */
#endif /* ACE_SHARED_MALLOC_MM_H */
|
