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#ifndef __pdoctave_data_frame_h__
#define __pdoctave_data_frame_h__
#ifdef __cplusplus
extern "C" {
#endif
#include <unistd.h>
#include <sys/shm.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/wait.h>
#include <stdio.h>
#include "pdoctave_datatypes.h"
#define STD_USLEEP_TIME 100
#define MAX_SLEEP_TIME 200000
typedef struct _SharedDataFrame_ SharedDataFrame;
struct _SharedDataFrame_ {
int data_frame_id;
int data_vec_id;
int data_vec_len;
int data_size_bytes;
DatTyp data_typ;
// internal states
int frame_attached;
int data_attached;
int block_for_read;
int block_for_write;
};
SharedDataFrame *newSharedDataFrame ();
SharedDataFrame *getSharedDataFrame (int id);
void freeSharedDataFrame (SharedDataFrame **sdf);
void removeSharedDataFrame (SharedDataFrame **sdf);
int getSharedDataFrameId (SharedDataFrame *sdf);
DatTyp getSharedDataType (SharedDataFrame *sdf);
int getSharedDataVecLength (SharedDataFrame *sdf);
void *newSharedData (SharedDataFrame *sdf, int n, int size_bytes, DatTyp dtyp);
void *getSharedData (SharedDataFrame *sdf);
void freeSharedData (SharedDataFrame *sdf, void **data);
void removeSharedData (SharedDataFrame *sdf, void **data);
void unBlockForReading (SharedDataFrame *sdf);
void unBlockForWriting (SharedDataFrame *sdf);
void blockForReading (SharedDataFrame *sdf);
void blockForWriting (SharedDataFrame *sdf);
void sleepUntilReadUnBlocked (SharedDataFrame *sdf, int usleep_time);
void sleepUntilReadBlocked (SharedDataFrame *sdf, int usleep_time);
void sleepUntilWriteUnBlocked (SharedDataFrame *sdf, int usleep_time);
void sleepUntilWriteBlocked (SharedDataFrame *sdf, int usleep_time);
#ifdef __cplusplus
}
#endif
#endif
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