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A memory-mapped file is a segment of virtual memory [1] that has been assigned a direct byte-for-byte correlation with some portion of a file or file-like resource. This resource is typically a file that is physically present on disk, but can also be a device, shared memory object, or other resource that an operating system can reference through a file descriptor.
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.
In computing, memory mapping may refer to: . Memory-mapped file, also known as mmap(); Memory-mapped I/O, an alternative to port I/O; a communication between CPU and peripheral device using the same instructions, and same bus, as between CPU and memory
IOzone is a file system benchmark utility. [1] [2] Originally made by William Norcott, further enhanced by Don Capps and others.Source code is available from iozone.org. It does mmap() file I/O and uses POSIX Threads.
support.microsoft.com /en-us /windows /find-your-way-with-maps-51ece9fb-a0f2-9853-4164-6940865085c8 Windows Maps [ 3 ] [ 2 ] is a web mapping client software from Microsoft . It is included with Windows 10 and Windows 11 operating systems and is also available for the Xbox Series X/S and Xbox One platforms.
Memory-mapped I/O is preferred in IA-32 and x86-64 based architectures because the instructions that perform port-based I/O are limited to one register: EAX, AX, and AL are the only registers that data can be moved into or out of, and either a byte-sized immediate value in the instruction or a value in register DX determines which port is the source or destination port of the transfer.
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Address space layout randomization (ASLR) is a computer security technique involved in preventing exploitation of memory corruption vulnerabilities. [1] In order to prevent an attacker from reliably redirecting code execution to, for example, a particular exploited function in memory, ASLR randomly arranges the address space positions of key data areas of a process, including the base of the ...