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59267da72b
Base.h provides a backwards compatibility shim (enabled unless NAMESPACED_WPILIB is defined) that does a "using namespace frc". However, as some header files do not include Base.h, this may be a breaking change in some corner cases (with an easy fix). Fixes #218.
52 lines
1.6 KiB
C++
52 lines
1.6 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 <memory>
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#include <string>
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#include <vector>
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#include "ErrorBase.h"
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#include "HAL/cpp/priority_mutex.h"
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namespace frc {
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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 : public ErrorBase {
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public:
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virtual ~Resource() = default;
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Resource(const Resource&) = delete;
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Resource& operator=(const Resource&) = delete;
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static void CreateResourceObject(std::unique_ptr<Resource>& r,
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uint32_t elements);
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explicit Resource(uint32_t size);
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uint32_t Allocate(const std::string& resourceDesc);
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uint32_t Allocate(uint32_t index, const std::string& 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 frc
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