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'Pth' is a portable library that provides non-preemptive priority-based scheduling for multiple threads of execution inside event-driven applications. Threads run in the same address space on the server application, but each one has its own individual program-counter, run-time stack, signal mask and errno variable. A priority- and event-based non-preemptive scheduler manages the threads; this gives better portability and run-time performance than preemptive scheduling. The event facility lets threads wait until various events occur, including pending I/O on filedescriptors, asynchronous signals, elapsed timers, pending I/O on message ports, thread and process termination, and customized call back functions.


English on-line end user manual available at

Heckert gnu.small.png This is a GNU package:pth


Download version 2.0.4 (stable)
released on 8 March 2005


Related Projects


LicenseVerified byVerified onNotes
LGPLJanet Casey31 January 2001

Leaders and contributors

Ralf S. Engelschall Maintainer

Resources and communication

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Bug Tracking E-mail
Developer,Support E-mail
Support Newsgroup comp.programming.threads

Software prerequisites

This entry (in part or in whole) was last reviewed on 8 March 2005.


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