List of memory mapping services
The memory mapping subroutines operate on memory regions that have been mapped with the mmap subroutine.
These subroutines enable you to:
- Map an object file into virtual memory
- Synchronize a mapped file
- Determine residency of memory pages
- Determine access protections to a mapped memory region
- Unmap mapped memory regions.
You do not need to specify any special flag to the compiler to use the memory functions. However, you must include the header file for some of these subroutines. If the subroutine description specifies a header file, you can include it with the following statement:
#include <HeaderFile.h>The following memory mapping services are provided:
| Service | Description |
|---|---|
| madvise | Advises the system of a process' expected paging behavior. |
| mincore | Determines residency of memory pages. |
| mmap | Maps an object file onto virtual memory. |
| mprotect | Modifies access protections of memory mapping. |
| msync | Synchronizes a mapped file with its underlying storage device. |
| munmap | Unmaps a mapped memory region. |