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20 lines
1.1 KiB
Plaintext
20 lines
1.1 KiB
Plaintext
Provides an object-oriented interface to either the POSIX mmap() or
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Win32 equivalent APIs to memory map a file into a process's address
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space for general memory access. IPC::Mmap provides only a minimal
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interface without the additional overhead of tie'd variables or
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locking enforced in other modules (e.g., Sys::Mmap, Win32::MMF); hence,
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the application is responsible for performing read()'s and write()'s
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on the IPC::Mmap object, and calling any needed lock() and unlock()
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methods, as required by concurrent processes.
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Memory mapped files provide an alternate shared memory mechanism for
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multiple processes. The technique maps the OS's file system buffers
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for a given file into each mmap()'ing process's virtual memory space,
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thereby permitting each process to essentially share the same physical
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memory. Refer to the excellent "Advanced Programming in the UNIX
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Environment", Stevens et al., Addison-Wesley Publisher for a detailed
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reference on the POSIX implementation. IPC::Mmap provides OS-agnostic
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wrappers for both the POSIX and Win32 memory mapped file capabilities.
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WWW: http://search.cpan.org/dist/IPC-Mmap/
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