mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-21 01:01:43 +00:00
98f2d08103
The HAL will remain untouched in order to maintain C-style compatibility. A few places in wpilibc were left as C-style strings, especially if special formatting (eg, elaborate uses of snprintf or sscanf) was being used. In general, const char* was changed to std::string. character buffers used for formatting were either untouched, changed to std::stringstream, or changed to std::string, depending on what was done with the buffer. Change-Id: I5e431ddf1cc4d9a6d534e1f21b16ea23be26e7f1
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2008. All Rights Reserved.
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*/
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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 $(WIND_BASE)/WPILib. */
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/*----------------------------------------------------------------------------*/
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#pragma once
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#include "ErrorBase.h"
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include "HAL/cpp/priority_mutex.h"
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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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static void CreateResourceObject(::std::unique_ptr<Resource>& r, 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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DISALLOW_COPY_AND_ASSIGN(Resource);
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};
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