On Wed, 2003-04-02 at 15:32, Justin Georgeson wrote: > I read somewhere that I must use JDK/JRE 1.4 or higher due to the NTPL > stuff. Is this strictly for the Sun implementations (perhaps the IBM 1.3 > SDK and RE are useable)? Is there any compat lib I could install or > anything like that? > >From the Release Notes: > o Red Hat Linux 9 includes the Native POSIX Thread Library > (NPTL), a new implementation of POSIX threads for Linux. This library > provides performance improvements and increased scalability for i686 > or better processors. > > This thread library is designed to be binary compatible with the old > LinuxThreads implementation; however, applications that rely on the > places where the LinuxThreads implementation deviates from the POSIX > standard will need to be fixed. Notable differences include: > > - Signal handling has changed from per-thread signal handling to POSIX > process signal handling. > > - getpid() returns the same value in all threads. > > - Thread handlers registered with pthread_atfork are not run if > vfork() is used - no manager thread > > Applications that are known to have problems using NPTL include: > > - Sun JRE prior to version 1.4.1 > > - IBM JRE > > If an application does not work properly with NPTL, it can be run > using the old LinuxThreads implementation by setting the following > environment variable: > > LD_ASSUME_KERNEL=<kernel-version> > > The following versions are available: > > - 2.4.1 - Linuxthreads with floating stacks > > - 2.2.5 - Linuxthreads without floating stacks > > NPTL support for all dynamically-linked applications can be disabled > by using the following boot-time option: > > nosysinfo > gerry
