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ACE
6.3.4
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Helper class for MMAP Memory Pool constructor options. More...
#include <MMAP_Memory_Pool.h>
Public Types | |
| enum | { FIRSTCALL_FIXED = 0, ALWAYS_FIXED = 1, NEVER_FIXED = 2 } |
Public Member Functions | |
| ACE_MMAP_Memory_Pool_Options (const void *base_addr=ACE_DEFAULT_BASE_ADDR, int use_fixed_addr=ALWAYS_FIXED, bool write_each_page=true, size_t minimum_bytes=0, u_int flags=0, bool guess_on_fault=true, LPSECURITY_ATTRIBUTES sa=0, mode_t file_mode=ACE_DEFAULT_FILE_PERMS, bool unique_=false, bool install_signal_handler=true) | |
| Constructor. More... | |
Public Attributes | |
| const void * | base_addr_ |
| Base address of the memory-mapped backing store. More... | |
| int | use_fixed_addr_ |
| bool | write_each_page_ |
| size_t | minimum_bytes_ |
| What the minimim bytes of the initial segment should be. More... | |
| u_int | flags_ |
Any special flags that need to be used for mmap. More... | |
| bool | guess_on_fault_ |
| LPSECURITY_ATTRIBUTES | sa_ |
| Pointer to a security attributes object. Only used on NT. More... | |
| mode_t | file_mode_ |
| File mode for mmaped file, if it is created. More... | |
| bool | unique_ |
| Do we want an unique backing store name? More... | |
| bool | install_signal_handler_ |
| Should we install a signal handler. More... | |
Private Member Functions | |
| ACE_MMAP_Memory_Pool_Options (const ACE_MMAP_Memory_Pool_Options &) | |
| ACE_MMAP_Memory_Pool_Options & | operator= (const ACE_MMAP_Memory_Pool_Options &) |
Helper class for MMAP Memory Pool constructor options.
This should be a nested class, but that breaks too many compilers.
| anonymous enum |
| ACE_MMAP_Memory_Pool_Options::ACE_MMAP_Memory_Pool_Options | ( | const void * | base_addr = ACE_DEFAULT_BASE_ADDR, |
| int | use_fixed_addr = ALWAYS_FIXED, |
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| bool | write_each_page = true, |
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| size_t | minimum_bytes = 0, |
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| u_int | flags = 0, |
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| bool | guess_on_fault = true, |
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| LPSECURITY_ATTRIBUTES | sa = 0, |
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| mode_t | file_mode = ACE_DEFAULT_FILE_PERMS, |
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| bool | unique_ = false, |
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| bool | install_signal_handler = true |
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| ) |
Constructor.
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private |
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private |
| const void* ACE_MMAP_Memory_Pool_Options::base_addr_ |
Base address of the memory-mapped backing store.
| mode_t ACE_MMAP_Memory_Pool_Options::file_mode_ |
File mode for mmaped file, if it is created.
| u_int ACE_MMAP_Memory_Pool_Options::flags_ |
Any special flags that need to be used for mmap.
| bool ACE_MMAP_Memory_Pool_Options::guess_on_fault_ |
Try to remap without knowing the faulting address. This parameter is ignored on platforms that know the faulting address (UNIX with SI_ADDR and Win32).
| bool ACE_MMAP_Memory_Pool_Options::install_signal_handler_ |
Should we install a signal handler.
| size_t ACE_MMAP_Memory_Pool_Options::minimum_bytes_ |
What the minimim bytes of the initial segment should be.
| LPSECURITY_ATTRIBUTES ACE_MMAP_Memory_Pool_Options::sa_ |
Pointer to a security attributes object. Only used on NT.
| bool ACE_MMAP_Memory_Pool_Options::unique_ |
Do we want an unique backing store name?
| int ACE_MMAP_Memory_Pool_Options::use_fixed_addr_ |
Determines whether we set base_addr_ or if mmap(2) selects it FIRSTCALL_FIXED The base address from the first call to mmap will be used for subsequent calls to mmap ALWAYS_FIXED The base address specified in base_addr will be used in all calls to mmap. NEVER_FIXED The base address will be selected by the OS for each call to mmap. Caution should be used with this mode since a call that requires the backing store to grow may change pointers that are cached by the application.
| bool ACE_MMAP_Memory_Pool_Options::write_each_page_ |
Should each page be written eagerly to avoid surprises later on?
1.8.9.1