25 lines
675 B
C++
25 lines
675 B
C++
#pragma once
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#include "foundation/types.h"
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#include <map>
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#include "nu/AutoLock.h"
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/* Helper class for managing valid chunks in non-sequential scenarios
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e.g. progressive downloading */
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class ProgressTracker
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{
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public:
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static const uint64_t null_position;
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ProgressTracker();
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void Write(uint64_t bytes_written);
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bool Valid(uint64_t requested_position, uint64_t requested_end, uint64_t *available=0);
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bool Seek(uint64_t requested_position, uint64_t requested_end, uint64_t *new_start, uint64_t *new_end);
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void Dump();
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typedef std::map<uint64_t, uint64_t> ChunkList;
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ChunkList chunks;
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uint64_t current_chunk;
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uint64_t current_position;
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nu::LockGuard list_guard;
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};
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