diff options
author | Cheng-Lung Sung <clsung@FreeBSD.org> | 2006-07-15 05:37:29 +0000 |
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committer | Cheng-Lung Sung <clsung@FreeBSD.org> | 2006-07-15 05:37:29 +0000 |
commit | f35d8838282767803b62a47aa0d4a6a60e526bb4 (patch) | |
tree | cd7d2e1b27e301c598652877a57e77a1d4186aac /devel/p5-IPC-Mmap/pkg-descr | |
parent | 0e29681c02e1b30986e2b29346a2dc0db354be7a (diff) |
Notes
Diffstat (limited to 'devel/p5-IPC-Mmap/pkg-descr')
-rw-r--r-- | devel/p5-IPC-Mmap/pkg-descr | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/devel/p5-IPC-Mmap/pkg-descr b/devel/p5-IPC-Mmap/pkg-descr new file mode 100644 index 000000000000..f3baea7d290c --- /dev/null +++ b/devel/p5-IPC-Mmap/pkg-descr @@ -0,0 +1,19 @@ +Provides an object-oriented interface to either the POSIX mmap() or +Win32 equivalent APIs to memory map a file into a process's address +space for general memory access. IPC::Mmap provides only a minimal +interface without the additional overhead of tie'd variables or +locking enforced in other modules (e.g., Sys::Mmap, Win32::MMF); hence, +the application is responsible for performing read()'s and write()'s +on the IPC::Mmap object, and calling any needed lock() and unlock() +methods, as required by concurrent processes. + +Memory mapped files provide an alternate shared memory mechanism for +multiple processes. The technique maps the OS's file system buffers +for a given file into each mmap()'ing process's virtual memory space, +thereby permitting each process to essentially share the same physical +memory. Refer to the excellent "Advanced Programming in the UNIX +Environment", Stevens et al., Addison-Wesley Publisher for a detailed +reference on the POSIX implementation. IPC::Mmap provides OS-agnostic +wrappers for both the POSIX and Win32 memory mapped file capabilities. + +WWW: http://search.cpan.org/dist/IPC-Mmap/ |