mmap size
mmap works in multiples of the page size on your system. If you're doing this on i386/amd64 or actually most modern CPUs, this will be 4096. In the man page of ... ,The prototype of mmap() is: void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);`. Technically you are guaranteed only that it will allocate ... ,Read carefully the documentation of mmap(2). The second argument (in your code, FILESIZE ) defines the size of the mapping (in bytes). You might check that it ... , The actual size reserved for the memory segment you receive is operating system dependant. Normally, on a full paged virtual memory system, ...,Yes, size &= ~PAGE_MASK;. will take you to the size rounded down to previous page. ,#include <sys/mman.h> void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset); int munmap(void *addr, size_t length); See NOTES for ... , On most UNIX implementations, once a mapping has been created, its location and size can't be changed. However, Linux provides the ...,First of all, while you're using mmap to obtain the memory, nothing in your question is specific to mmap . The same conclusions would apply if you were just ... , There is no restriction on mmap size but would depend on the existing address space used by the given process. But it is highly suggested that ..., 繼Linux programming 課程紀錄「小談mmap() 與VMA」後，今天 ... the total size ? while (size >0) page = pos; if (remap_page_range(vma, start, ...
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 mmap size 相關參考資料
C - why I cannot mmap a small (256UL or smaller) size of memory ...
mmap works in multiples of the page size on your system. If you're doing this on i386/amd64 or actually most modern CPUs, this will be 4096. In the man page of ... https://stackoverflow.com How can i get the number of bytes allocated by mmap? - Stack Overflow
The prototype of mmap() is: void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);`. Technically you are guaranteed only that it will allocate ... https://stackoverflow.com How to find the number of data mapped by mmap()? - Stack Overflow
Read carefully the documentation of mmap(2). The second argument (in your code, FILESIZE ) defines the size of the mapping (in bytes). You might check that it ... https://stackoverflow.com Minimal size for mmap - Stack Overflow
The actual size reserved for the memory segment you receive is operating system dependant. Normally, on a full paged virtual memory system, ... https://stackoverflow.com mmap size to be adjusted to previous page boundary - Stack Overflow
Yes, size &= ~PAGE_MASK;. will take you to the size rounded down to previous page. https://stackoverflow.com mmap(2) - Linux manual page - man7.org
#include <sys/mman.h> void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset); int munmap(void *addr, size_t length); See NOTES for ... http://man7.org Resizing shared anonymous MMAP - Stack Overflow
On most UNIX implementations, once a mapping has been created, its location and size can't be changed. However, Linux provides the ... https://stackoverflow.com Understanding the mmap size parameter - Stack Overflow
First of all, while you're using mmap to obtain the memory, nothing in your question is specific to mmap . The same conclusions would apply if you were just ... https://stackoverflow.com what is the size limit for mmap - Stack Overflow
There is no restriction on mmap size but would depend on the existing address space used by the given process. But it is highly suggested that ... https://stackoverflow.com [教育訓練紀錄] Mmap and remap_page_range(), in the nutshell. - Jollen
繼Linux programming 課程紀錄「小談mmap() 與VMA」後，今天 ... the total size ? while (size >0) page = pos; if (remap_page_range(vma, start, ... http://www.jollen.org |