Chee Yee
46 lines
811 B
C++
46 lines
811 B
C++
#ifndef EZ_MEM_FILE_H
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#define EZ_MEM_FILE_H
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#include <string>
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#include <vector>
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#include <mutex>
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#include <pthread.h>
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enum MemBlockStatus
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{
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MEM_BLOCK_STATUS_NOT_EXISTS,
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MEM_BLOCK_STATUS_CREATED,
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MEM_BLOCK_STATUS_DELETED
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};
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typedef struct
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{
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size_t size;
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void* buf;
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bool is_last;
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MemBlockStatus status;
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} MemBlock;
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class MemFile
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{
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public:
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MemFile(const std::string& path, size_t block_size);
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~MemFile();
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size_t Read(char* buf, size_t buf_size, size_t offset);
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size_t Write(char* buf, size_t buf_size);
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int Open();
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int Close();
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private:
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std::vector<MemBlock*> mem_blocks;
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size_t write_offset;
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size_t block_size;
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int write_error;
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bool complete;
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MemBlock *block_in_progress;
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sem_t block_ready;
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MemBlock *NewBlock();
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};
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#endif |