Changeset 8a18d5b in mainline for uspace/app/trace/syscalls.c

Timestamp:

2018-11-11T15:47:39Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

269bc459

Parents:

0b5203b

git-author:

Jakub Jermar <jakub@…> (2018-11-10 16:22:29)

git-committer:

Jakub Jermar <jakub@…> (2018-11-11 15:47:39)

Message:

Preallocate the waitq handle

This fixes a race condition (a missing wakeup) when the wakeup was
faster than the thread going to sleep and no handle was allocated yet.
The handle get preallocated to avoid a possible allocation failure in
wakeup.

We also switched to using atomic_compare_exchange_weak_explicit() to fix
ARMv4 and ARMv5 builds.

(No files)