Threadsafe and threaded libraries in AIX
This section describes the thread libraries in the AIX®.
By default, all applications are now considered "threaded," even though most are of the case "single threaded." These threadsafe libraries are as follows:
| Threadsafe libraries | ||
|---|---|---|
| libbsd.a | libc.a | libm.a |
| libsvid.a | libtli.a | libxti.a |
| libnetsvc.a | ||
POSIX threads libraries
The following POSIX threads libraries are available:
- libpthreads.a POSIX threads library
- The libpthreads.a library is based on the POSIX 1003.1c industry standard for a portable user threads API. Any program written for use with a POSIX thread library can be ported for use with another POSIX threads library; only the performance and very few subroutines of the threads library are implementation-dependent. To enhance the portability of the threads library, the POSIX standard made the implementation of several programming facilities optional. For more information about checking the POSIX options, see Threads Library Options.
- libpthreads_compat.a POSIX draft 7 threads library
- AIX provides binary compatibility for existing multi-threads applications that were coded to Draft 7 of the POSIX thread standard. These applications will run without relinking. The libpthreads_compat.a library is provided only for compatibility with earlier versions of applications written by using the Draft 7 of the POSIX Thread Standard. All new applications must use the libpthreads.a library, which supports both 32-bit and 64-bit applications. The libpthreads_compat.a library supports only 32-bit applications. Beginning with AIX 5.1, the libpthreads.a library supports the Single UNIX Specification, Version 2, which includes the final POSIX 1003.1c Pthread Standard.