121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
/* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef RESOURCEGROUPS_THREAD_RESOURCE_CONTROL_H_
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#define RESOURCEGROUPS_THREAD_RESOURCE_CONTROL_H_
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#include <vector>
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#include "my_thread_os_id.h"
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#include "sql/resourcegroups/resource_group_basic_types.h" // Range, Type
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namespace resourcegroups {
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/**
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Class that abstracts the resource control that can be applied
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to threads. The resource controls include set of CPU IDS which
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determine the CPUS the thread is allowed to run and the thread
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priority.
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*/
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class Thread_resource_control {
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public:
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/**
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Default constructor
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*/
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Thread_resource_control() : m_priority(0) {}
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/**
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Get priority associated with Thread resource control object.
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@return an int value indicating the thread priority.
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*/
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int priority() const { return m_priority; }
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/**
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Set priority associated with Thread resource control object.
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*/
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void set_priority(int priority) { m_priority = priority; }
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/**
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Get const pointer of vector of CPU ID range.
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@return pointer to vector of CPU ID range.
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*/
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const std::vector<Range> &vcpu_vector() const { return m_vcpu_vector; }
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/**
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Set the CPU ID range vector.
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*/
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void set_vcpu_vector(const std::vector<Range> &vcpu_vector) {
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m_vcpu_vector.clear();
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for (const auto &cpu_range : vcpu_vector)
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m_vcpu_vector.emplace_back(cpu_range);
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}
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/**
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Apply the thread resource controls to the thread on
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which this function is called.
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@return false if control application is successful else true
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*/
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bool apply_control();
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/**
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Apply the thread resource controls to thread identified by
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the thread os id.
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@param thread_os_id Thread OS ID.
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@return false if control application is successful else true
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*/
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bool apply_control(my_thread_os_id_t thread_os_id);
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/**
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Validate the CPU ID Ranges and thread priority value associate with
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the thread resource control object.
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@return false if validation is successful else true.
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*/
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bool validate(const Type &resource_group_type) const;
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private:
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/**
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Vector of CPU ID range.
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*/
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std::vector<Range> m_vcpu_vector;
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/**
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Thread priority value
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*/
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int m_priority;
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};
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} // namespace resourcegroups
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#endif // RESOURCEGROUPS_THREAD_RESOURCE_CONTROL_H_
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