The SRR Module (srripc) is a synchronous message-passing module for the Linux kernel versions 2.2.x, 2.4.x, and 2.6.x. This module provides synchronous message passing among processes and threads, queued asynchronous event notification (proxies), timed delivery of proxies and signals, triggering of proxies between tasks, and user-space interrupt handling. Synchronous message passing is a fast, flexible, and robust IPC mechanism, particularly useful for building modular systems. The SRR Module installs automatically and provides an API that allows for porting of applications between QNX and Linux. License: GNU General Public License (GPL) Changes: This release changes the work handlers to match changes made in version 2.6.20 of the Linux kernel. Module compilation has been fixed. Support has been added for messages larger than 3 MBytes. Workarounds have been added for udev issues. Potential timer IRQ race conditions have been fixed. Spinlocks have been replaced with mutexes where swapping is allowed. Relay functions have been added. clock_getres() has been implemented. Unnecessary OOPS messages have been removed. The Sendmx() return value has been fixed.

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