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Edits to RelAccX library

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This commit is contained in:
Erik Zandvliet 2018-02-27 16:30:00 +01:00 • committed by Thulinma
parent 68c87a44d0
commit 7ea42685a6
3 changed files with 215 additions and 78 deletions
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111
lib/util.h
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@ -1,8 +1,11 @@
#pragma once
#include <deque>
#include <map>
#include <stdint.h>
#include <string>
#include <deque>
#include <vector>
#include <map>
#include <stdint.h>
#include <stdlib.h>
namespace Util{
bool isDirectory(const std::string &path);
@ -15,6 +18,9 @@ namespace Util{
uint64_t ftell(FILE *stream);
uint64_t fseek(FILE *stream, uint64_t offset, int whence);
//Forward declaration
class FieldAccX;
/// Helper class that maintains a resizeable pointer and will free it upon deletion of the class.
class ResizeablePointer{
public:
@ -82,6 +88,7 @@ namespace Util{
/// 8 bytes records deleted - amount of records no longer present
/// 4 bytes records present - amount of record currently present
/// 2 bytes record offset
/// 8 bytes record endpos - index after the last valid record in the buffer
/// @field_offset: offset-field_offset bytes fields:
/// 5 bits field name len (< 32), 3 bits type len (1-5)
/// len bytes field name string (< 32 bytes)
@ -102,44 +109,70 @@ namespace Util{
/// Setting reload means the writer needed to change fields, and the pointer should be closed and
/// re-opened through outside means (e.g. closing and re-opening the containing shm page).
class RelAccX{
public:
RelAccX(char *data, bool waitReady = true);
// Read-only functions:
uint32_t getRCount() const;
uint32_t getRSize() const;
uint16_t getOffset() const;
uint32_t getStartPos() const;
uint64_t getDeleted() const;
uint32_t getPresent() const;
bool isReady() const;
bool isExit() const;
bool isReload() const;
bool isRecordAvailable(uint64_t recordNo) const;
uint32_t getRecordPosition(uint64_t recordNo) const;
uint32_t getSize(const std::string &name, uint64_t recordNo = 0) const;
char *getPointer(const std::string &name, uint64_t recordNo = 0) const;
uint64_t getInt(const std::string &name, uint64_t recordNo = 0) const;
std::string toPrettyString() const;
// Read-write functions:
void addField(const std::string &name, uint8_t fType, uint32_t fLen = 0);
void setRCount(uint32_t count);
void setStartPos(uint32_t n);
void setDeleted(uint64_t n);
void setPresent(uint32_t n);
void setReady();
void setExit();
void setReload();
void setString(const std::string &name, const std::string &val, uint64_t recordNo = 0);
void setInt(const std::string &name, uint64_t val, uint64_t recordNo = 0);
void deleteRecords(uint32_t amount);
void addRecords(uint32_t amount);
public:
RelAccX(char * data = NULL, bool waitReady = true);
//Read-only functions:
uint32_t getRCount() const;
uint32_t getRSize() const;
uint16_t getOffset() const;
uint32_t getStartPos() const;
uint64_t getDeleted() const;
uint64_t getEndPos() const;
size_t getPresent() const;
uint32_t getFieldCount() const;
bool isReady() const;
bool isExit() const;
bool isReload() const;
bool isRecordAvailable(uint64_t recordNo) const;
uint32_t getRecordPosition(uint64_t recordNo) const;
uint32_t getSize(const std::string & name, uint64_t recordNo=0) const;
protected:
static uint32_t getDefaultSize(uint8_t fType);
char * getPointer(const std::string & name, uint64_t recordNo=0) const;
char * getPointer(const RelAccXFieldData & fd, uint64_t recordNo=0) const;
uint64_t getInt(const std::string & name, uint64_t recordNo=0) const;
uint64_t getInt(const RelAccXFieldData & fd, uint64_t recordNo=0) const;
private:
char *p;
std::map<std::string, RelAccXFieldData> fields;
std::string toPrettyString(size_t indent = 0) const;
std::string toCompactString(size_t indent = 0) const;
//Read-write functions:
void addField(const std::string & name, uint8_t fType, uint32_t fLen=0);
void setRCount(uint32_t count);
void setStartPos(uint32_t n);
void setDeleted(uint64_t n);
void setPresent(uint32_t n);
void setReady();
void setExit();
void setReload();
void setString(const std::string & name, const std::string & val, uint64_t recordNo=0);
void setInt(const std::string & name, uint64_t val, uint64_t recordNo=0);
void setInt(const RelAccXFieldData & fd, uint64_t val, uint64_t recordNo=0);
void setInts(const std::string & name, uint64_t * values, size_t len);
void deleteRecords(uint32_t amount);
void addRecords(uint32_t amount);
void minimalFrom(const RelAccX & src);
void copyFieldsFrom(const RelAccX & src, bool minimal = false);
void flowFrom(const RelAccX & src);
FieldAccX getFieldAccX(const std::string & fName);
protected:
static uint32_t getDefaultSize(uint8_t fType);
std::map<std::string, RelAccXFieldData> fields;
private:
char * p;
};
class FieldAccX {
public:
FieldAccX(RelAccX * _src = NULL, RelAccXFieldData _field = RelAccXFieldData(), char * _data = NULL);
uint64_t uint(size_t recordNo) const;
std::string string(size_t recordNo) const;
void set(uint64_t val, size_t recordNo = 0);
void set(const std::string & val, size_t recordNo = 0);
private:
RelAccX * src;
RelAccXFieldData field;
char * data;
};
}