66e43912d6
In that level no io_priority_class-es exist. Instead, all the IO happens in the context of current sched-group. File API no longer accepts prio class argument (and makes io_intent arg mandatory to impls). So the change consists of - removing all usage of io_priority_class - patching file_impl's inheritants to updated API - priority manager goes away altogether - IO bandwidth update is performed on respective sched group - tune-up scylla-gdb.py io_queues command The first change is huge and was made semi-autimatically by: - grep io_priority_class | default_priority_class - remove all calls, found methods' args and class' fields Patching file_impl-s is smaller, but also mechanical: - replace io_priority_class& argument with io_intent* one - pass intent to lower file (if applicatble) Dropping the priority manager is: - git-rm .cc and .hh - sed out all the #include-s - fix configure.py and cmakefile The scylla-gdb.py update is a bit hairry -- it needs to use task queues list for IO classes names and shares, but to detect it should it checks for the "commitlog" group is present. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com> Closes #13963
57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/*
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* Copyright (C) 2022-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "schema/schema_fwd.hh"
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#include "dht/i_partitioner_fwd.hh"
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#include <functional>
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#include <optional>
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#include "readers/flat_mutation_reader_fwd.hh"
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#include "tracing/trace_state.hh"
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using namespace seastar;
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class flat_mutation_reader_v2;
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class reader_permit;
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class mutation_source;
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namespace query {
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class partition_slice;
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}
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// Make a reader that enables the wrapped reader to work with multiple ranges.
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///
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/// \param ranges An range vector that has to contain strictly monotonic
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/// partition ranges, such that successively calling
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/// `flat_mutation_reader::fast_forward_to()` with each one is valid.
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/// An range vector range with 0 or 1 elements is also valid.
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/// \param fwd_mr It is only respected when `ranges` contains 0 or 1 partition
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/// ranges. Otherwise the reader is created with
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/// mutation_reader::forwarding::yes.
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flat_mutation_reader_v2
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make_flat_multi_range_reader(
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schema_ptr s, reader_permit permit, mutation_source source, const dht::partition_range_vector& ranges,
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const query::partition_slice& slice,
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tracing::trace_state_ptr trace_state = nullptr,
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mutation_reader::forwarding fwd_mr = mutation_reader::forwarding::yes);
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/// Make a reader that enables the wrapped reader to work with multiple ranges.
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///
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/// Generator overload. The ranges returned by the generator have to satisfy the
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/// same requirements as the `ranges` param of the vector overload.
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flat_mutation_reader_v2
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make_flat_multi_range_reader(
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schema_ptr s,
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reader_permit permit,
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mutation_source source,
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std::function<std::optional<dht::partition_range>()> generator,
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const query::partition_slice& slice,
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tracing::trace_state_ptr trace_state = nullptr,
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mutation_reader::forwarding fwd_mr = mutation_reader::forwarding::yes);
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