This warning prevents using std::move() where it can hurt
- on an unnamed temporary or a named automatic variable being
returned from a function. In both cases the value could be
constructed directly in its final destination, but std::move()
prevents it.
Fix the handful of cases (all trivial), and enable the warning.
Closes#8992
The purpose of the class in question is to start sharded storage
service to make its global instance alive. I don't know when exactly
it happened but no code that instantiates this wrapper really needs
the global storage service.
Ref: #2795
tests: unit(dev), perf_sstable(dev)
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Message-Id: <20210526170454.15795-1-xemul@scylladb.com>
Make flat_mutation_reader::impl::close pure virtual
so that all implementations are required to implemnt it.
With that, provide a trivial implementation to
all implementations that currently use the default,
trivial close implementation.
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
We don't own _source therefore do not close it.
That said, we still need to make sure that the reversing reader
itself is closed to calm down the check when it's destroyed.
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
We want to start tracking the memory consumption of mutation fragments.
For this we need schema and permit during construction, and on each
modification, so the memory consumption can be recalculated and pass to
the permit.
In this patch we just add the new parameters and go through the insane
churn of updating all call sites. They will be used in the next patch.
Not used yet, this patch does all the churn of propagating a permit
to each impl.
In the next patch we will use it to track to track the memory
consumption of `_buffer`.
We want to switch from using a single limit to a dual soft/hard limit.
As a first step we switch the limit field of `query_class_config` to use
the recently introduced type for this. As this field has a single user
at the moment -- reverse queries (and not a lot of propagation) -- we
update it in this same patch to use the soft/hard limit: warn on
reaching the soft limit and abort on the hard limit (the previous
behaviour).
Mutation sources will soon require a valid permit so make sure we have
one and pass it to the mutation sources when creating the underlying
readers.
For now, pass no_reader_permit() on call sites, deferring the obtaining
of a valid permit to later patches.
We use boost test logging primarily to generate nice XML xunit
files used in Jenkins. These XML files can be bloated
with messages from BOOST_TEST_MESSAGE(), hundreds of megabytes
of build archives, on every build.
Let's use seastar logger for test logging instead, reserving
the use of boost log facilities for boost test markup information.
If the reversing requires more memory than the limit, the read is
aborted. All users are updated to get a meaningful limit, from the
respective table object, with the exception of tests of course.
Currently reverse reads just pass a flag to
`flat_mutation_reader::consume()` to make the read happen in reverse.
This is deceptively simple and streamlined -- while in fact behind the
scenes a reversing reader is created to wrap the reader in question to
reverse partitions, one-by-one.
This patch makes this apparent by exposing the reversing reader via
`make_reversing_reader()`. This now makes how reversing works more
apparent. It also allows for more configuration to be passed to the
reversing reader (in the next patches).
This change is forward compatible, as in time we plan to add reversing
support to the sstable layer, in which case the reversing reader will
go.
The former was never really more than a reader_permit with one
additional method. Currently using it doesn't even save one from any
includes. Now that readers will be using reader_permit we would have to
pass down both to mutation_source. Instead get rid of
reader_resource_tracker and just use reader_permit. Instead of making it
a last and optional parameter that is easy to ignore, make it a
first class parameter, right after schema, to signify that permits are
now a prominent part of the reader API.
This -- mostly mechanical -- patch essentially refactors mutation_source
to ask for the reader_permit instead of reader_resource_tracking and
updates all usage sites.
1. Move tests to test (using singular seems to be a convention
in the rest of the code base)
2. Move boost tests to test/boost, other
(non-boost) unit tests to test/unit, tests which are
expected to be run manually to test/manual.
Update configure.py and test.py with new paths to tests.
