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| author | Joel Sherrill <joel@rtems.org> | 2022-09-06 17:31:18 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2022-09-06 17:31:18 -0500 |
| commit | 8741d2c23451828bd22bbf98e412f72d6caf5199 (patch) | |
| tree | d7165df65c178000a07b5213fc0a2f7625845970 | |
| parent | c-user/config/face.rst: New file -- add CONFIGURE_POSIX_TIMERS_FACE_BEHAVIOR (diff) | |
| download | rtems-docs-8741d2c23451828bd22bbf98e412f72d6caf5199.tar.bz2 | |
posix-users/process_creation_and_execution.rst: Update pthread_atfork()
Updates #4713.
| -rw-r--r-- | posix-users/process_creation_and_execution.rst | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/posix-users/process_creation_and_execution.rst b/posix-users/process_creation_and_execution.rst index 835f3cc..9d47589 100644 --- a/posix-users/process_creation_and_execution.rst +++ b/posix-users/process_creation_and_execution.rst @@ -313,16 +313,22 @@ pthread_atfork - Register Fork Handlers .. list-table:: :class: rtems-table - * - ``ENOSYS`` - - This routine is not supported by RTEMS. + * - ``0`` + - This routine is a non-functional stub. **DESCRIPTION:** -This routine is not supported by RTEMS. +This routine is non-functional stub. **NOTES:** -NONE +The POSIX specification for ``pthread_atfork()`` does not address the behavior +when in a single process environment. Originally, the RTEMS implementation +returned -1 and set errno to ``ENOSYS``. This was an arbitrary decision +part with no basis from the wider POSIX community. The FACE Technical +Standard includes profiles without multiple process support and defined +the behavior in a single process environment to return 0. Logically, the +application can register atfork handlers but they will never be invoked. .. _wait: @@ -344,7 +350,7 @@ wait - Wait for Process Termination **STATUS CODES:** .. list-table:: - :class: rtems-table + * - ``ENOSYS`` - This routine is not supported by RTEMS. |