Re: Re: [GSoC'19, libgomp work-stealing] Task parallelism runtime

[김규래]

Hi,
I'm currently having trouble implementing the thread sleeping mechanism when 
the queue is out of tasks.
Problem is, it's hard to maintain consistency between the thread sleeping 
routine and the queues.
See the pseudocode below,
 
1. check queue is empty
2. go to sleep
 
if we go lock-free, the consistency between 1 and 2 cannot be maintained.
Moreover, if we go to a multi-queue setting, simply checking whether all the 
queues are empty is not consistent. 
I would really like to have the thread sleeping mechanism but I'm not sure how 
we could do it.
 
Ray Kim

gcc-9-20190803 is now available

[gccadmin]

Snapshot gcc-9-20190803 is now available on
  ftp://gcc.gnu.org/pub/gcc/snapshots/9-20190803/
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This snapshot has been generated from the GCC 9 SVN branch
with the following options: svn://gcc.gnu.org/svn/gcc/branches/gcc-9-branch 
revision 274050

You'll find:

 gcc-9-20190803.tar.xzComplete GCC

  SHA256=546e521ea2de1e4a7377165eb89782004d0fda9fae2eadfe392a35ba84a3e5bc
  SHA1=d6d6adf33fe0d3806b4654dad6ce8d25f1a03b8a

Diffs from 9-20190727 are available in the diffs/ subdirectory.

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