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| author | Stefan Hajnoczi | 2014-12-02 12:23:15 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2015-06-05 17:10:00 +0200 |
| commit | 36546e5b803f6e363906607307f27c489441fd15 (patch) | |
| tree | ab898dc907aa2a93f39ec00117649bde2dd27e0a /include/exec | |
| parent | bitmap: add atomic set functions (diff) | |
| download | qemu-36546e5b803f6e363906607307f27c489441fd15.tar.gz qemu-36546e5b803f6e363906607307f27c489441fd15.tar.xz qemu-36546e5b803f6e363906607307f27c489441fd15.zip | |
bitmap: add atomic test and clear
The new bitmap_test_and_clear_atomic() function clears a range and
returns whether or not the bits were set.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <1417519399-3166-3-git-send-email-stefanha@redhat.com>
[Test before xchg; then a full barrier is needed at the end just like
in the previous patch. The barrier can be avoided if we did at least
one xchg. - Paolo]
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/exec')
0 files changed, 0 insertions, 0 deletions