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68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2018, OpenNebula Project, OpenNebula Systems */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* 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 ACTION_SET_H
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#define ACTION_SET_H
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/**
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* This class defines actions sets (for example the set of actions supported
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* by the driver). Just the basic methods to initialize the set and check if a
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* an action is included is provided (similar to FD_SET(3) or SIGSETOPS(3))
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*
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* Types should be enums with uint values.
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*/
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template <typename T>
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class ActionSet
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{
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public:
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ActionSet():action_set(0UL){};
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ActionSet(const T * actions, int actions_len):action_set(0)
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{
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for (int i=0; i<actions_len; i++)
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{
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set(actions[i]);
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}
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};
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~ActionSet(){};
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/* Set the action in the set */
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void set(T action)
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{
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action_set |= 1UL << static_cast<int>(action);
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};
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void clear(T action)
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{
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action_set &= (~ (1UL << static_cast<int>(action)));
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};
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/**
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* Check if action is included in the set
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* @param action
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* @return true if included
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*/
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bool is_set(T action) const
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{
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return (action_set & (1UL << static_cast<int>(action))) != 0;
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};
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private:
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long long action_set;
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};
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#endif /*ACTION_SET_H*/
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