Pth is a very portable POSIX/ANSI-C based library for Unix platforms which provides non-preemptive priority-based scheduling for multiple threads of execution (aka `multithreading') inside event-driven applications. All threads run in the same address space of the server application, but each thread has its own individual program-counter, run-time stack, signal mask and errno variable. That is, GNU Pth is a user-mode threading library.
At present, pth on cygwin does not allow the use of fork() in client applications, so it has been disabled: pth_fork() always returns -1 with errno=ENOSYS fork() is redirected by pth.h to call pth_fork() This will be corrected once cygwin implements the sigstack() and sigaltstack() system calls, which is expected sometime after cygwin version 1.7.1 is released. See /usr/share/doc/fork-bug/README after installation for more information. pth is a prerequisite for (unmodified) GnuPG2 and libassuan. This build passes all internal self-tests, but has one known cygwin-specific deficiency as mentioned above. The distribution includes a test case in /usr/share/doc/pth/fork-bug/. If you don't use fork(), pth works fine and is generally quite a bit faster (and supposedly more secure) than native threads such as pthreads. [[ compiled using gcc-4.3.4-1 ]] -- Charles Wilson volunteer pth maintainer for cygwin ==================================================================== To update your installation, click on the "Install Cygwin now" link on the http://cygwin.com/ web page. This downloads setup.exe to your system. Then, run setup and answer all of the questions. *** CYGWIN-ANNOUNCE UNSUBSCRIBE INFO *** If you want to unsubscribe from the cygwin-announce mailing list, look at the "List-Unsubscribe: " tag in the email header of this message. Send email to the address specified there. It will be in the format: [email protected] If you need more information on unsubscribing, start reading here: http://sourceware.org/lists.html#unsubscribe-simple Please read *all* of the information on unsubscribing that is available starting at this URL.
