diff options
Diffstat (limited to 'code/fe310/eos/msgq.c')
-rw-r--r-- | code/fe310/eos/msgq.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/code/fe310/eos/msgq.c b/code/fe310/eos/msgq.c deleted file mode 100644 index e76090c..0000000 --- a/code/fe310/eos/msgq.c +++ /dev/null @@ -1,108 +0,0 @@ -#include <stdlib.h> -#include <stdint.h> -#include <string.h> - -#include "eos.h" -#include "msgq.h" - -#define IDX_MASK(IDX, SIZE) ((IDX) & ((SIZE) - 1)) -#define IDX_HALF ((uint8_t)1 << (sizeof(uint8_t) * 8 - 1)) -#define IDX_LT(a,b) ((uint8_t)((uint8_t)(a) - (uint8_t)(b)) > IDX_HALF) -#define IDX_LTE(a,b) ((uint8_t)((uint8_t)(b) - (uint8_t)(a)) < IDX_HALF) - -void eos_msgq_init(EOSMsgQ *msgq, EOSMsgItem *array, uint8_t size) { - msgq->idx_r = 0; - msgq->idx_w = 0; - msgq->size = size; - msgq->array = array; -} - -int eos_msgq_push(EOSMsgQ *msgq, unsigned char type, unsigned char *buffer, uint16_t len) { - if ((uint8_t)(msgq->idx_w - msgq->idx_r) == msgq->size) return EOS_ERR_FULL; - - uint8_t idx = IDX_MASK(msgq->idx_w, msgq->size); - msgq->array[idx].type = type; - msgq->array[idx].buffer = buffer; - msgq->array[idx].len = len; - msgq->idx_w++; - return EOS_OK; -} - -void eos_msgq_pop(EOSMsgQ *msgq, unsigned char *type, unsigned char **buffer, uint16_t *len) { - if (msgq->idx_r == msgq->idx_w) { - *type = 0; - *buffer = NULL; - *len = 0; - } else { - uint8_t idx = IDX_MASK(msgq->idx_r, msgq->size); - *type = msgq->array[idx].type; - *buffer = msgq->array[idx].buffer; - *len = msgq->array[idx].len; - msgq->idx_r++; - } -} - -int eos_msgq_get(EOSMsgQ *msgq, unsigned char type, unsigned char *selector, uint16_t sel_len, unsigned char **buffer, uint16_t *len) { - uint8_t i, j, idx; - - if (msgq->idx_r == msgq->idx_w) { - *buffer = NULL; - *len = 0; - return 0; - } - - idx = IDX_MASK(msgq->idx_r, msgq->size); - if (type == msgq->array[idx].type) { - *buffer = msgq->array[idx].buffer; - *len = msgq->array[idx].len; - if ((selector == NULL) || (sel_len == 0) || ((sel_len <= *len) && (memcmp(selector, *buffer, sel_len) == 0))) { - msgq->idx_r++; - return 1; - } - } - for (i = msgq->idx_r + 1; IDX_LT(i, msgq->idx_w); i++) { - idx = IDX_MASK(i, msgq->size); - if (type== msgq->array[idx].type) { - *buffer = msgq->array[idx].buffer; - *len = msgq->array[idx].len; - if ((selector == NULL) || (sel_len == 0) || ((sel_len <= *len) && (memcmp(selector, *buffer, sel_len) == 0))) { - for (j = i + 1; IDX_LT(j, msgq->idx_w); j++) { - msgq->array[IDX_MASK(j - 1, msgq->size)] = msgq->array[IDX_MASK(j, msgq->size)]; - } - msgq->idx_w--; - return 1; - } - } - } - *buffer = NULL; - *len = 0; - return 0; -} - -uint8_t eos_msgq_len(EOSMsgQ *msgq) { - return (uint8_t)(msgq->idx_w - msgq->idx_r); -} - -void eos_bufq_init(EOSBufQ *bufq, unsigned char **array, uint8_t size) { - bufq->idx_r = 0; - bufq->idx_w = 0; - bufq->size = size; - bufq->array = array; -} - -int eos_bufq_push(EOSBufQ *bufq, unsigned char *buffer) { - if ((uint8_t)(bufq->idx_w - bufq->idx_r) == bufq->size) return EOS_ERR_FULL; - - bufq->array[IDX_MASK(bufq->idx_w++, bufq->size)] = buffer; - return EOS_OK; -} - -unsigned char *eos_bufq_pop(EOSBufQ *bufq) { - if (bufq->idx_r == bufq->idx_w) return NULL; - - return bufq->array[IDX_MASK(bufq->idx_r++, bufq->size)]; -} - -uint8_t eos_bufq_len(EOSBufQ *bufq) { - return (uint8_t)(bufq->idx_w - bufq->idx_r); -} |