On 7/12/22 10:53, Joseph Reichman wrote:
David Crayford suggested I use uss pthread wonder if that corresponds to z/os
task
Of course! Although the POSIX semantics are different. pthreads are not
hierarchical and the thread can be detached from the thread that spawned
it. This is implemented on z/OS by spawning all threads on the IPT
(initial pthread-creating task) which is the main enclave.
https://www.ibm.com/docs/en/zos/2.4.0?topic=reference-using-threads-callable-services
Going to try and research that
Thanks
On Dec 6, 2022, at 9:30 PM, David Crayford <[email protected]> wrote:
We discussed this with the C/C++ compiler devs when we were beta testing the
Open XL C/C++ compiler. They said it was on their radar but would need work
from the binder team to implement similar plumbing to writeable static. I got
the impression that it won't happen soon. It's a PITA as it makes porting
modern code a lot more difficult.
You can implement thread specific data the old way using the pthread library
and wrapping in C++ code https://stackoverflow.com/a/12053862/2434779.
On 7/12/22 04:15, Peter Relson wrote:
To my limited understanding, there is not currently support for thread-local
storage on z/OS.
An LE enclave does not correspond 1 to 1 to a thread.
I think that "writeable static", for example, is on an enclave basis, not a
thread basis.
I'm sure others know this far better than I.
Peter Relson
z/OS Core Technology Design
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