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Defines | |
#define | PROT_READ (0x01) |
page can be read | |
#define | PROT_WRITE (0x02) |
page can be written | |
#define | PROT_EXEC (0x04) |
page can be executed | |
#define | PROT_NONE (0x00) |
page can not be accessed | |
#define | MAP_PRIVATE (0x02) |
Changes are private. | |
#define | MAP_ANONYMOUS (0x20) |
Ignore fd and offset parameters. | |
#define | MAP_FIXED (0x10) |
Interpret addr exactly. | |
#define | MAP_FAILED ((void*)~0) |
Returned from mmap() when the mapping fails. | |
Functions | |
void * | mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset) |
Maps a file into memory, and returns a pointer to it. | |
int | munmap (void *addr, size_t len) |
Deletes a mapped region. | |
int | msync (void *addr, size_t len, int flags) |
Writes any dirty pages within the given range to disk. |
#define MAP_ANONYMOUS (0x20) |
#define MAP_FAILED ((void*)~0) |
#define MAP_FIXED (0x10) |
#define MAP_PRIVATE (0x02) |
Changes are private.
#define PROT_EXEC (0x04) |
page can be executed
#define PROT_NONE (0x00) |
page can not be accessed
#define PROT_READ (0x01) |
page can be read
#define PROT_WRITE (0x02) |
page can be written
void* mmap | ( | void * | addr, | |
size_t | len, | |||
int | prot, | |||
int | flags, | |||
int | fd, | |||
off_t | offset | |||
) |
Maps a file into memory, and returns a pointer to it.
addr | Suggested address for the mapping | |
len | The number of bytes in the mapped region. The combination of len and offset must not exceed the length of the mapped file | |
prot | Either PROT_NONE, or a combination of the other PROT_* flags | |
flags | One of MAP_PRIVATE, MAP_ANONYMOUS or MAP_FIXED. | |
fd | The file descriptor of the file to map, or -1 to allocate an anonymous map | |
offset | The offset within the file to start the mapped region |
pointer | to mapped region if successful | |
MAP_FAILED | if failed |
addr | Suggested address for the mapping | |
len | The number of bytes in the mapped region. The combination of len and offset must not exceed the length of the mapped file | |
prot | Either PROT_NONE, or a combination of the other PROT_* flags | |
flags | One of MAP_PRIVATE, MAP_ANONYMOUS or MAP_FIXED. | |
fd | The file descriptor of the file to map, or -1 to allocate an anonymous map | |
offset | The offset within the file to start the mapped region |
pointer | to mapped region if successful | |
MAP_FAILED | if failed |
References MAP_ANONYMOUS, MAP_FAILED, MAP_FIXED, and unixem_Windows_HANDLE_from_file_handle().
int msync | ( | void * | addr, | |
size_t | len, | |||
int | flags | |||
) |
Writes any dirty pages within the given range to disk.
addr | The base address of the mapped region | |
len | The length of the mapped region to flush to disk. Will be rounded up to next page boundary. | |
flags | Ignored |
References MAP_FAILED.
int munmap | ( | void * | addr, | |
size_t | len | |||
) |
Deletes a mapped region.
The munmap() system call deletes the mappings for the specified address range, and causes further references to addresses within the range to generate invalid memory references.
addr | The base address of the mapped region to unmap | |
len | The length of the mapped region. Ignore in the Win32 implementation |
0 | if successful | |
-1 | if failed |
References MAP_FAILED.
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UNIX Emulation for Win32 Libraries documentation © Synesis Software Pty Ltd, 2002-2010 |