aboutsummaryrefslogtreecommitdiff
path: root/devel/p5-IPC-Mmap/pkg-descr
diff options
context:
space:
mode:
authorCheng-Lung Sung <clsung@FreeBSD.org>2006-07-15 05:37:29 +0000
committerCheng-Lung Sung <clsung@FreeBSD.org>2006-07-15 05:37:29 +0000
commitf35d8838282767803b62a47aa0d4a6a60e526bb4 (patch)
treecd7d2e1b27e301c598652877a57e77a1d4186aac /devel/p5-IPC-Mmap/pkg-descr
parent0e29681c02e1b30986e2b29346a2dc0db354be7a (diff)
Notes
Diffstat (limited to 'devel/p5-IPC-Mmap/pkg-descr')
-rw-r--r--devel/p5-IPC-Mmap/pkg-descr19
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/