diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2012-04-09 14:11:47 -0300 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-03-06 21:50:28 +0100 |
| commit | c63420a117fe67107466d806890e901d091cb1d5 (patch) | |
| tree | 63c706a5d6b50f9efcb0db95c1ec80f99432b7d8 /src/testlib/qbenchmarkperfevents_p.h | |
| parent | 9d72259f943a3b31fa4e32aeb1c5a2de3d8ca611 (diff) | |
Implement the Linux Perf Counter backend for benchlib
Currently, we only support one event type: counting CPU cycles with
hardware counters. There are no fallbacks if this hardware counter is
not available, and there is currently no way to specify other
counters.
Benchlib only supports reporting one event per benchmark, even though
the event counter interface allows specifying more than one. Still,
the hardware usually has limitations on how many events it can monitor
at a time, and we'd prefer to have the counter running at 100% of the
time, so this will not change.
Change-Id: I79858a3ad1e696dc4b7b72c420e5a04b67cd55de
Reviewed-by: Jason McDonald <macadder1@gmail.com>
Diffstat (limited to 'src/testlib/qbenchmarkperfevents_p.h')
| -rw-r--r-- | src/testlib/qbenchmarkperfevents_p.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/testlib/qbenchmarkperfevents_p.h b/src/testlib/qbenchmarkperfevents_p.h index 19e68aebc3..74966e1699 100644 --- a/src/testlib/qbenchmarkperfevents_p.h +++ b/src/testlib/qbenchmarkperfevents_p.h @@ -75,6 +75,9 @@ public: static bool isAvailable(); private: + int fd; + + qint64 readValue(); }; QT_END_NAMESPACE |