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Diffstat (limited to 'ecp/src/rbuf_recv.c')
-rw-r--r--ecp/src/rbuf_recv.c370
1 files changed, 0 insertions, 370 deletions
diff --git a/ecp/src/rbuf_recv.c b/ecp/src/rbuf_recv.c
deleted file mode 100644
index a3f2345..0000000
--- a/ecp/src/rbuf_recv.c
+++ /dev/null
@@ -1,370 +0,0 @@
-#include "core.h"
-#include "tr.h"
-#include "tm.h"
-
-#define ACK_RATE 8
-#define ACK_MASK_FIRST ((ecp_ack_t)1 << (ECP_SIZE_ACKB - 1))
-
-static ssize_t msg_store(ECPConnection *conn, ecp_seq_t seq, unsigned char *msg, size_t msg_size, unsigned char mtype) {
- ECPRBRecv *buf = conn->rbuf.recv;
- ECPRBuffer *rbuf = &buf->rbuf;
- unsigned short idx;
- unsigned char flags;
- int skip;
- int rv;
-
- rv = _ecp_rbuf_msg_idx(rbuf, seq, &idx);
- if (rv) return rv;
-
- if (rbuf->arr.msg[idx].flags) return ECP_ERR_RBUF_DUP;
-
-#ifdef ECP_WITH_MSGQ
- if (buf->flags & ECP_RBUF_FLAG_MSGQ) {
- ecp_seq_t seq_offset;
-
- pthread_mutex_lock(&buf->msgq.mutex);
-
- seq_offset = seq - buf->msgq.seq_start;
- if (seq_offset >= rbuf->arr_size) rv = ECP_ERR_FULL;
-
- pthread_mutex_unlock(&buf->msgq.mutex);
-
- if (rv) return rv;
- }
-#endif
-
- skip = ecp_rbuf_skip(mtype);
- flags = ECP_RBUF_FLAG_IN_RBUF;
- if (skip) flags |= ECP_RBUF_FLAG_SKIP;
- rbuf->arr.msg[idx].flags = flags;
-
- if (skip) return 0;
-
- memcpy(rbuf->arr.msg[idx].buf, msg, msg_size);
- rbuf->arr.msg[idx].size = msg_size;
- if (ECP_SEQ_LT(rbuf->seq_max, seq)) rbuf->seq_max = seq;
-
- return msg_size;
-}
-
-static void msg_flush(ECPConnection *conn, ECP2Buffer *b) {
- ECPRBRecv *buf = conn->rbuf.recv;
- ECPRBuffer *rbuf = &buf->rbuf;
- ecp_seq_t seq;
- unsigned short idx;
- int i;
-
-#ifdef ECP_WITH_MSGQ
- if (buf->flags & ECP_RBUF_FLAG_MSGQ) pthread_mutex_lock(&buf->msgq.mutex);
-#endif
-
- seq = rbuf->seq_start;
- idx = rbuf->idx_start;
-
- unsigned short msg_cnt = rbuf->seq_max - rbuf->seq_start + 1;
-
- while (ECP_SEQ_LTE(seq, rbuf->seq_max)) {
- if (rbuf->arr.msg[idx].flags & ECP_RBUF_FLAG_IN_RBUF) {
- if (!(rbuf->arr.msg[idx].flags & ECP_RBUF_FLAG_SKIP)) {
- ecp_pts_t msg_pts;
- int rv;
-
- rv = ecp_msg_get_pts(rbuf->arr.msg[idx].buf, rbuf->arr.msg[idx].size, &msg_pts);
- if (!rv && buf->deliver_delay) {
- ecp_cts_t now = ecp_tm_abstime_ms(0);
-
- msg_pts += buf->deliver_delay;
- if (ECP_PTS_LT(now, msg_pts)) {
- if (!(rbuf->arr.msg[idx].flags & ECP_RBUF_FLAG_IN_TIMER)) {
- ECPTimerItem ti;
-
- rv = ecp_timer_item_init(&ti, conn, ECP_MTYPE_RBTIMER, 0, msg_pts - now);
- if (!rv) rv = ecp_timer_push(&ti);
- if (!rv) rbuf->arr.msg[idx].flags |= ECP_RBUF_FLAG_IN_TIMER;
- }
- break;
- } else if (rbuf->arr.msg[idx].flags & ECP_RBUF_FLAG_IN_TIMER) {
- rbuf->arr.msg[idx].flags &= ~ECP_RBUF_FLAG_IN_TIMER;
- }
- }
-
-#ifdef ECP_WITH_MSGQ
- if (buf->flags & ECP_RBUF_FLAG_MSGQ) {
- unsigned char mtype;
-
- rv = ecp_msg_get_type(rbuf->arr.msg[idx].buf, rbuf->arr.msg[idx].size, &mtype);
- if (!rv) rv = ecp_conn_msgq_push(conn, seq, mtype & ECP_MTYPE_MASK);
- if (rv) break;
-
- rbuf->arr.msg[idx].flags |= ECP_RBUF_FLAG_IN_MSGQ;
- } else
-#endif
- ecp_conn_handle_msg(conn, seq, rbuf->arr.msg[idx].buf, rbuf->arr.msg[idx].size, b);
- } else {
- rbuf->arr.msg[idx].flags &= ~ECP_RBUF_FLAG_SKIP;
- }
- rbuf->arr.msg[idx].flags &= ~ECP_RBUF_FLAG_IN_RBUF;
- // if (rbuf->arr.msg[idx].flags == 0);
- } else {
- if (buf->flags & ECP_RBUF_FLAG_RELIABLE) break;
- if (!ECP_SEQ_LT(seq, rbuf->seq_max - buf->hole_max)) break;
- }
- seq++;
- idx = ECP_RBUF_IDX_MASK(idx + 1, rbuf->arr_size);
- }
- rbuf->seq_start = seq;
- rbuf->idx_start = idx;
-
-#ifdef ECP_WITH_MSGQ
- if (buf->flags & ECP_RBUF_FLAG_MSGQ) pthread_mutex_unlock(&buf->msgq.mutex);
-#endif
-
-}
-
-static int ack_send(ECPConnection *conn, ecp_seq_t seq_ack, ecp_seq_t ack_map) {
- ECPRBRecv *buf = conn->rbuf.recv;
- ECPBuffer packet;
- ECPBuffer payload;
- unsigned char pkt_buf[ECP_SIZE_PKT_BUF(sizeof(ecp_seq_t) + sizeof(ecp_ack_t), ECP_MTYPE_RBACK, conn)];
- unsigned char pld_buf[ECP_SIZE_PLD_BUF(sizeof(ecp_seq_t) + sizeof(ecp_ack_t), ECP_MTYPE_RBACK, conn)];
- unsigned char *_buf;
- ssize_t rv;
-
- packet.buffer = pkt_buf;
- packet.size = ECP_SIZE_PKT_BUF(sizeof(ecp_seq_t) + sizeof(ecp_ack_t), ECP_MTYPE_RBACK, conn);
- payload.buffer = pld_buf;
- payload.size = ECP_SIZE_PLD_BUF(sizeof(ecp_seq_t) + sizeof(ecp_ack_t), ECP_MTYPE_RBACK, conn);
-
- ecp_pld_set_type(payload.buffer, payload.size, ECP_MTYPE_RBACK);
- _buf = ecp_pld_get_buf(payload.buffer, payload.size);
- _buf[0] = (seq_ack & 0xFF000000) >> 24;
- _buf[1] = (seq_ack & 0x00FF0000) >> 16;
- _buf[2] = (seq_ack & 0x0000FF00) >> 8;
- _buf[3] = (seq_ack & 0x000000FF);
- _buf[4] = (ack_map & 0xFF000000) >> 24;
- _buf[5] = (ack_map & 0x00FF0000) >> 16;
- _buf[6] = (ack_map & 0x0000FF00) >> 8;
- _buf[7] = (ack_map & 0x000000FF);
-
- rv = ecp_pld_send(conn, &packet, &payload, ECP_SIZE_PLD(sizeof(ecp_seq_t) + sizeof(ecp_ack_t), ECP_MTYPE_RBACK), 0);
- if (rv < 0) return rv;
-
- buf->ack_pkt = 0;
-
- return ECP_OK;
-}
-
-static int ack_shift(ECPRBRecv *buf) {
- ECPRBuffer *rbuf = &buf->rbuf;
- unsigned short idx;
- int do_ack = 0;
- int in_rbuf = 0;
- int rv;
-
- if ((buf->flags & ECP_RBUF_FLAG_RELIABLE) && ((buf->ack_map & ACK_MASK_FIRST) == 0)) return 0;
-
- /* walks through messages that are not delivered yet, so no need for msgq mutex lock */
- while (ECP_SEQ_LT(buf->seq_ack, rbuf->seq_max)) {
- buf->seq_ack++;
- rv = _ecp_rbuf_msg_idx(rbuf, buf->seq_ack, &idx);
- if (!rv) {
- in_rbuf = rbuf->arr.msg[idx].flags & ECP_RBUF_FLAG_IN_RBUF;
- } else {
- in_rbuf = 1;
- }
- if (in_rbuf && (buf->ack_map == ECP_ACK_FULL)) continue;
-
- buf->ack_map = buf->ack_map << 1;
- if (in_rbuf) {
- buf->ack_map |= 1;
- } else if (!do_ack && ECP_SEQ_LT(buf->seq_ack, rbuf->seq_max - buf->hole_max)) {
- do_ack = 1;
- }
-
- if ((buf->flags & ECP_RBUF_FLAG_RELIABLE) && ((buf->ack_map & ACK_MASK_FIRST) == 0)) {
- do_ack = 1;
- break;
- }
- }
-
- return do_ack;
-}
-
-ssize_t ecp_rbuf_handle_flush(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size, ECP2Buffer *b) {
- ECPRBRecv *buf = conn->rbuf.recv;
-
- if (buf == NULL) return ECP_ERR;
- if (size < 0) return size;
-
- ecp_tr_release(b->packet, 1);
- ack_send(conn, buf->seq_ack, buf->ack_map);
- return 0;
-}
-
-ssize_t ecp_rbuf_handle_timer(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size, ECP2Buffer *b) {
- ECPRBRecv *buf = conn->rbuf.recv;
-
- if (buf == NULL) return ECP_ERR;
-
- msg_flush(conn, b);
- return 0;
-}
-
-int ecp_rbuf_recv_create(ECPConnection *conn, ECPRBRecv *buf, ECPRBMessage *msg, unsigned short msg_size) {
- ECPRBuffer *rbuf = &buf->rbuf;
- int rv;
-
- if (msg == NULL) return ECP_ERR;
-
- memset(buf, 0, sizeof(ECPRBRecv));
- memset(msg, 0, sizeof(ECPRBMessage) * msg_size);
-
- buf->ack_map = ECP_ACK_FULL;
- buf->ack_rate = ACK_RATE;
- rbuf->arr.msg = msg;
- rbuf->arr_size = msg_size;
-
-#ifdef ECP_WITH_MSGQ
- rv = ecp_conn_msgq_create(&buf->msgq);
- if (rv) return rv;
-#endif
-
- conn->rbuf.recv = buf;
- return ECP_OK;
-}
-
-void ecp_rbuf_recv_destroy(ECPConnection *conn) {
- ECPRBRecv *buf = conn->rbuf.recv;
-
- if (buf == NULL) return;
-
-#ifdef ECP_WITH_MSGQ
- ecp_conn_msgq_destroy(&buf->msgq);
-#endif
- conn->rbuf.recv = NULL;
-}
-
-int ecp_rbuf_recv_start(ECPConnection *conn, ecp_seq_t seq) {
- ECPRBRecv *buf = conn->rbuf.recv;
- ECPRBuffer *rbuf = &buf->rbuf;
- int rv;
-
- if (buf == NULL) return ECP_ERR;
-
- seq--;
- buf->seq_ack = seq;
- rv = _ecp_rbuf_start(rbuf, seq);
- if (rv) return rv;
-
-#ifdef ECP_WITH_MSGQ
- if (buf->flags & ECP_RBUF_FLAG_MSGQ) {
- rv = ecp_conn_msgq_start(&buf->msgq, seq);
- if (rv) return rv;
- }
-#endif
-
- return ECP_OK;
-}
-
-int ecp_rbuf_set_hole(ECPConnection *conn, unsigned short hole_max) {
- ECPRBRecv *buf = conn->rbuf.recv;
-
- buf->hole_max = hole_max;
-
- return ECP_OK;
-}
-
-int ecp_rbuf_set_delay(ECPConnection *conn, ecp_cts_t delay) {
- ECPRBRecv *buf = conn->rbuf.recv;
-
- buf->deliver_delay = delay;
-
- return ECP_OK;
-}
-
-ssize_t ecp_rbuf_store(ECPConnection *conn, ecp_seq_t seq, unsigned char *msg, size_t msg_size, ECP2Buffer *b) {
- ECPRBRecv *buf = conn->rbuf.recv;
- ECPRBuffer *rbuf = &buf->rbuf;
- unsigned char mtype;
- unsigned short ack_pkt = 0;
- int do_ack = 0;
- int _rv;
- ssize_t rv;
-
- _rv = ecp_msg_get_type(msg, msg_size, &mtype);
- if (_rv) return _rv;
-
- if (ECP_SEQ_LT(rbuf->seq_max, seq)) {
- ack_pkt = seq - rbuf->seq_max;
- }
- if (ECP_SEQ_LTE(seq, buf->seq_ack)) {
- ecp_seq_t seq_offset = buf->seq_ack - seq;
- if (seq_offset < ECP_SIZE_ACKB) {
- ecp_ack_t ack_bit = ((ecp_ack_t)1 << seq_offset);
-
- if (ack_bit & buf->ack_map) return ECP_ERR_RBUF_DUP;
-
- rv = msg_store(conn, seq, msg, msg_size, mtype);
- if (rv < 0) return rv;
-
- buf->ack_map |= ack_bit;
- /* reliable transport can prevent seq_ack from reaching seq_max */
- if (ECP_SEQ_LT(buf->seq_ack, rbuf->seq_max)) {
- do_ack = ack_shift(buf);
- }
- } else {
- return ECP_ERR_RBUF_DUP;
- }
- } else {
- unsigned short msg_cnt = rbuf->seq_max - rbuf->seq_start + 1;
-
- if ((msg_cnt == 0) && (seq == (ecp_seq_t)(buf->seq_ack + 1))) {
- if ((buf->flags & ECP_RBUF_FLAG_MSGQ) || buf->deliver_delay) {
- rv = msg_store(conn, seq, msg, msg_size, mtype);
- if (rv < 0) return rv;
- } else {
- /* receive buffer is empty, so no need for msgq mutex lock */
- rv = 0;
- rbuf->seq_max++;
- rbuf->seq_start++;
- rbuf->idx_start = ECP_RBUF_IDX_MASK(rbuf->idx_start + 1, rbuf->arr_size);
- }
- buf->seq_ack++;
- } else {
- rv = msg_store(conn, seq, msg, msg_size, mtype);
- if (rv < 0) return rv;
-
- do_ack = ack_shift(buf);
- }
- }
- msg_flush(conn, b);
- if (ack_pkt) {
- buf->ack_pkt += ack_pkt;
- if (!do_ack && (buf->ack_pkt > buf->ack_rate)) do_ack = 1;
- }
- if (do_ack) {
- ecp_seq_t seq_ack = buf->seq_ack;
- ecp_seq_t ack_map = buf->ack_map;
-
- /* account for missing mackets within hole_max range */
- if (buf->hole_max && (buf->seq_ack == rbuf->seq_max)) {
- unsigned short h_bits = buf->hole_max + 1;
- ecp_seq_t h_mask = ~(~((ecp_seq_t)0) << h_bits);
-
- if ((ack_map & h_mask) != h_mask) {
- h_mask = ~(~((ecp_seq_t)0) >> h_bits);
- seq_ack -= h_bits;
- ack_map = (ack_map >> h_bits) | h_mask;
- }
- }
- _rv = ack_send(conn, seq_ack, ack_map);
- if (_rv) return _rv;
- }
-
- return rv;
-}
-
-ECPFragIter *ecp_rbuf_get_frag_iter(ECPConnection *conn) {
- if (conn->rbuf.recv) return conn->rbuf.recv->frag_iter;
- return NULL;
-}
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