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Re: GCC: OpenMP posix pthread

From: Tim Prince <n8tm at aol dot com>
To: gcc at gcc dot gnu dot org
Date: Sun, 19 Feb 2012 08:43:08 -0500
Subject: Re: GCC: OpenMP posix pthread
References: <LZNA7M$2A54ADF5C0E70DDA32C7D619B3D29A43@libero.it>
Reply-to: tprince at computer dot org

On 2/19/2012 9:42 AM, Erotavlas_turbo@libero.it wrote:

I'm starting to use Helgrind a tool of Valgrind. I read on the manual the following statement:
Runtime support library for GNU OpenMP (part of GCC), at least for GCC versions 4.2 and 4.3. The GNU OpenMP runtime library (libgomp.so) constructs its own synchronisation primitives using combinations of atomic memory instructions and the futex syscall, which causes total chaos since in Helgrind since it cannot "see" those.

In the latest version of GCC, is this still true or now the OpenMP uses the standard POSIX pthread?

Do you have a specific OS family in mind?


--
Tim Prince

References:
- GCC: OpenMP posix pthread
  - From: Erotavlas_turbo

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