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shm: do mlock/zeroing under shmem lock

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This commit is contained in:
Alexey Rybalchenko 2020-12-04 12:01:52 +01:00
parent db0937f339
commit f46d446d52
1 changed files with 11 additions and 15 deletions
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26
fairmq/shmem/Manager.h
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@ -143,23 +143,19 @@ class Manager
} catch(interprocess_exception& bie) {
LOG(error) << "something went wrong: " << bie.what();
}
}
if (mlockSegment) {
LOG(debug) << "Locking the managed segment memory pages...";
if (mlock(boost::apply_visitor(SegmentAddress{}, fSegments.at(fSegmentId)), boost::apply_visitor(SegmentSize{}, fSegments.at(fSegmentId))) == -1) {
LOG(error) << "Could not lock the managed segment memory. Code: " << errno << ", reason: " << strerror(errno);
if (mlockSegment) {
LOG(debug) << "Locking the managed segment memory pages...";
if (mlock(boost::apply_visitor(SegmentAddress{}, fSegments.at(fSegmentId)), boost::apply_visitor(SegmentSize{}, fSegments.at(fSegmentId))) == -1) {
LOG(error) << "Could not lock the managed segment memory. Code: " << errno << ", reason: " << strerror(errno);
}
LOG(debug) << "Successfully locked the managed segment memory pages.";
}
if (zeroSegment) {
LOG(debug) << "Zeroing the managed segment free memory...";
boost::apply_visitor(SegmentMemoryZeroer{}, fSegments.at(fSegmentId));
LOG(debug) << "Successfully zeroed the managed segment free memory.";
}
LOG(debug) << "Successfully locked the managed segment memory pages.";
}
if (zeroSegment) {
LOG(debug) << "Zeroing the managed segment free memory...";
boost::apply_visitor(SegmentMemoryZeroer{}, fSegments.at(fSegmentId));
LOG(debug) << "Successfully zeroed the managed segment free memory.";
}
{
boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
fShmRegions = fManagementSegment.find_or_construct<Uint16RegionInfoHashMap>(unique_instance)(fShmVoidAlloc);