45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
|
/*----------------------------------------------------------------------------*/
|
||
|
|
/* Copyright (c) FIRST 2008-2016. All Rights Reserved. */
|
||
|
|
/* Open Source Software - may be modified and shared by FRC teams. The code */
|
||
|
|
/* must be accompanied by the FIRST BSD license file in the root directory of */
|
||
|
|
/* the project. */
|
||
|
|
/*----------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "ErrorBase.h"
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <memory>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
#include "HAL/cpp/priority_mutex.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The Resource class is a convenient way to track allocated resources.
|
||
|
|
* It tracks them as indicies in the range [0 .. elements - 1].
|
||
|
|
* E.g. the library uses this to track hardware channel allocation.
|
||
|
|
*
|
||
|
|
* The Resource class does not allocate the hardware channels or other
|
||
|
|
* resources; it just tracks which indices were marked in use by
|
||
|
|
* Allocate and not yet freed by Free.
|
||
|
|
*/
|
||
|
|
class Resource : public ErrorBase {
|
||
|
|
public:
|
||
|
|
virtual ~Resource() = default;
|
||
|
|
|
||
|
|
Resource(const Resource&) = delete;
|
||
|
|
Resource& operator=(const Resource&) = delete;
|
||
|
|
|
||
|
|
static void CreateResourceObject(std::unique_ptr<Resource>& r, uint32_t elements);
|
||
|
|
explicit Resource(uint32_t size);
|
||
|
|
uint32_t Allocate(const std::string &resourceDesc);
|
||
|
|
uint32_t Allocate(uint32_t index, const std::string &resourceDesc);
|
||
|
|
void Free(uint32_t index);
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::vector<bool> m_isAllocated;
|
||
|
|
priority_recursive_mutex m_allocateLock;
|
||
|
|
|
||
|
|
static priority_recursive_mutex m_createLock;
|
||
|
|
};
|