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9.83 threads.h ¶

ISO C23 specification:
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf section 7.28.

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/threads.h.html

Defines the multithreading facility of ISO C11.

Gnulib module: threads-h

Portability problems fixed by Gnulib:

• This header file is missing on many platforms: glibc 2.27, macOS 14, FreeBSD 9.3, NetBSD 8.0, OpenBSD 7.5, Minix 3.1.8, AIX 7.1, HP-UX 11.31, Solaris 11.3, Cygwin 2.2.x, mingw, MSVC 14, Android 9.0.
• This header file defines thrd_start_t incorrectly on some platforms: AIX 7.2.
• This header file does not define TSS_DTOR_ITERATIONS on some platforms: AIX 7.2.

Portability problems not fixed by Gnulib:

• There is no way to define a working thread_local macro on some platforms:
  • Mac OS X 10.5,
  • OpenBSD 6.5,
  • AIX 7.1 with gcc (but it works with ‘xlc -qthreaded -qtls’),
  • HP-UX 11.31 with cc (but it works with gcc),
  • Android 4.3.