In computing, mmap(2) is a POSIX-compliant Unix system call that maps files or devices into memory. It is a method of memory-mapped file I/O. It implements demand paging because file contents are not immediately read from disk and initially use no physical RAM at all. The actual reads from disk are performed after a specific location is accessed, in a lazy manner. After the mapping is no longer needed, the pointers must be unmapped with munmap(2). Protection information—for example, marking mapped regions as executable—can be managed using mprotect(2), and special treatment can be enforced using madvise(2).
In Linux, macOS and the BSDs, mmap can create several types of mappings. Other operating systems may only support a subset of these; for example, shared mappings may not be practical in an operating system without a global VFS or I/O cache.
In computing, mmap(2) is a POSIX-compliant Unix system call that maps files or devices into memory. It is a method of memory-mapped file I/O. It implements...
Marketing Metric Audit Protocol (MMAP) Memory map mmap, a UNIX system call for mapping files to memory Marked Markovian Arrival Process This disambiguation...
E_{s}} (entropy bits of stack top) E m {\displaystyle E_{m}} (entropy bits of mmap() base) E x {\displaystyle E_{x}} (entropy bits of main executable base)...
the mmap threshold (a "largebin" request), the memory is always allocated using the mmap system call. The threshold is usually 128 KB. The mmap method...
MindManager is a commercial mind mapping software application developed by Mindjet. The software provides ways for users to visualize information in mind...
POSIX/SUS-compatible. Kernel mode Linux kernel stat, splice, dup, read, open, ioctl, write, mmap, close, exit, etc. (about 380 system calls) The Linux kernel System Call...
documents how measures stack up against the Marketing Metric Audit Protocol (MMAP). The intention is that the market will select specific measures based on...
other bodies of water. In 1988, the Maryland Maritime Archeology Program (MMAP) was established with the goal to manage and explore the various underwater...
The marketing metric audit protocol (MMAP) is the Marketing Accountability Standards Board's formal process for connecting marketing activities to the...
additional heap space; later versions allowed this to also be done using the mmap call. The brk and sbrk calls dynamically change the amount of space allocated...
audited by the Marketing Accountability Standards Board (MASB) according to MMAP (Marketing Metric Audit Protocol). Search Engine Spot (29 October 2020)....
program in Laos led by an American, the Middle Mekong Archaeological Project (MMAP). White has pursued larger Mekong regional questions raised by the original...
POSIX/SUS-compatible. Kernel mode Linux kernel stat, splice, dup, read, open, ioctl, write, mmap, close, exit, etc. (about 380 system calls) The Linux kernel System Call...
which cannot easily be implemented using the Windows API, such as fork(), mmap() and ioctl(). Applications written using a cross-platform library that has...
an Android-specific implementation dubbed ashmem. POSIX also provides the mmap API for mapping files into memory; a mapping can be shared, allowing the...
by transferring data directly between file pages mapped to memory by the mmap() function and the network stack. On high-bandwidth connections, it claims...
Laziness can be useful for high performance scenarios. An example is the Unix mmap function, which provides demand driven loading of pages from disk, so that...
process's current working directory based on a directory file descriptor) mmap() (maps ranges of a file into the process's address space) flock() fcntl()...
accesses all objects as a file would be accessed (i.e., there is no ioctl or mmap): networking, graphics, debugging, authentication, capabilities, encryption...
contract of malloc/calloc/realloc/free; they may also be implemented using mmap/munmap to reserve/unreserve potentially non-contiguous regions of virtual...
physical RAM. Virtual memory can be backed by physical RAM, a disk file via mmap (on Unix-derivatives) or MapViewOfFile (on Windows), or swap space, and the...
A mMap depicting the Turkish Riviera in blue, highlighting, from east to west, the major settlements of Alanya, Antalya, Kemer, Fethiye, Marmaris, Bodrum...
from A. F. Harvey and Data Acquisition Division Staff NATIONAL INSTRUMENTS mmap() and DMA, from Linux Device Drivers, 2nd Edition, Alessandro Rubini & Jonathan...
POSIX/SUS-compatible. Kernel mode Linux kernel stat, splice, dup, read, open, ioctl, write, mmap, close, exit, etc. (about 380 system calls) The Linux kernel System Call...
Don Capps and others. Source code is available from iozone.org. It does mmap() file I/O and uses POSIX Threads. It won the 2007 Infoworld Bossie Awards...
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