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One of the goals of Open vSwitch is to be as resource efficient as possible. Core parts of the program has been implemented as asynchronous state machines, and when absolutely necessary additional threads are used. Introduce cooperative multitasking module which allow us to interleave important processing with long running tasks while avoiding the additional resource consumption of threads and complexity of asynchronous state machines. We will use this module to ensure long running processing in the OVSDB server does not interfere with stable maintenance of the RAFT cluster in subsequent patches. Suggested-by: Ilya Maximets <i.maximets@ovn.org> Signed-off-by: Frode Nordahl <frode.nordahl@canonical.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
34 lines
995 B
C
34 lines
995 B
C
/*
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* Copyright (c) 2024 Canonical Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef COOPERATIVE_MULTITASKING_PRIVATE_H
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#define COOPERATIVE_MULTITASKING_PRIVATE_H 1
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#include "openvswitch/hmap.h"
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extern struct hmap cooperative_multitasking_callbacks;
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struct cm_entry {
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struct hmap_node node;
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void (*cb)(void *);
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void *arg;
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long long int threshold;
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long long int last_run;
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const char *name;
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};
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#endif /* COOPERATIVE_MULTITASKING_PRIVATE_H */
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