mirror of
https://github.com/wpilibsuite/allwpilib
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d82635bbe1
Subsections are alphabetized according to lexographic ordering. Also, HAL includes were moved from headers to source files where possible. This change may cause user code which uses HAL functionality and does not include the relevant HAL header (since it may have been provided by another WPILib header) to fail to compile.
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2008-2016. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#pragma once
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#include <stdint.h>
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#include <vector>
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#include "../Errors.h"
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#include "HAL/cpp/priority_mutex.h"
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// TODO: Replace this with something appropriate to avoid conflicts with
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// wpilibC++ Resource class (which performs an essentially identical function).
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namespace hal {
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/**
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* The Resource class is a convenient way to track allocated resources.
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* It tracks them as indicies in the range [0 .. elements - 1].
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* E.g. the library uses this to track hardware channel allocation.
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*
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* The Resource class does not allocate the hardware channels or other
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* resources; it just tracks which indices were marked in use by
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* Allocate and not yet freed by Free.
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*/
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class Resource {
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public:
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Resource(const Resource&) = delete;
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Resource& operator=(const Resource&) = delete;
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explicit Resource(uint32_t size);
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virtual ~Resource() = default;
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static void CreateResourceObject(Resource** r, uint32_t elements);
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uint32_t Allocate(const char* resourceDesc);
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uint32_t Allocate(uint32_t index, const char* resourceDesc);
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void Free(uint32_t index);
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private:
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std::vector<bool> m_isAllocated;
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priority_recursive_mutex m_allocateLock;
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static priority_recursive_mutex m_createLock;
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};
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} // namespace hal
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