25 lines
1.1 KiB
C
25 lines
1.1 KiB
C
#ifndef FLEXPTP_PTP_RAW_MSG_CIRCBUF_H_
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#define FLEXPTP_PTP_RAW_MSG_CIRCBUF_H_
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#include <stdbool.h>
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#include "ptp_types.h"
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// "ring" buffer for PTP-messages
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#define PTP_MSG_BUF_SIZE (32)
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typedef struct {
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RawPtpMessage *msgs; // messages
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uint8_t totalSize; // total buffer size (element count)
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uint8_t lastReceived; // pointer to last received and last processed messages
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uint8_t freeBufs; // number of free buffers
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int allocPending; // allocation pending (by index)
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} PtpCircBuf;
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void ptp_circ_buf_init(PtpCircBuf * pCircBuf, RawPtpMessage * pMsgPool, uint8_t n); // initialize circular buffer
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RawPtpMessage *ptp_circ_buf_alloc(PtpCircBuf * pCircBuf); // allocate next available circular buffer
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int ptp_circ_buf_commit(PtpCircBuf * pCircBuf); // commit last allocation
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void ptp_circ_buf_free(PtpCircBuf * pCircBuf); // free oldest allocation
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RawPtpMessage *ptp_circ_buf_get(PtpCircBuf * pCircBuf, uint8_t idx); // get message by index
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#endif /* FLEXPTP_PTP_RAW_MSG_CIRCBUF_H_ */
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