1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
#include <sys/time.h>
#include <stdlib.h>
#include <string.h>
#include "core.h"
#include "rbuf.h"
#include "msgq.h"
#define MSGQ_IDX_MASK(idx) ((idx) & ((ECP_MSGQ_MAX_MSG) - 1))
static struct timespec *abstime_ts(struct timespec *ts, ecp_sts_t msec) {
struct timeval tv;
uint64_t us_start;
gettimeofday(&tv, NULL);
us_start = tv.tv_sec * (uint64_t) 1000000 + tv.tv_usec;
us_start += msec * 1000;
ts->tv_sec = us_start / 1000000;
ts->tv_nsec = (us_start % 1000000) * 1000;
return ts;
}
int ecp_msgq_create(ECPRBConn *conn, ECPMsgQ *msgq) {
int i;
int rv;
if (conn->recv == NULL) return ECP_ERR;
memset(msgq, 0, sizeof(ECPMsgQ));
for (i=0; i<ECP_MSGQ_MAX_MTYPE; i++) {
rv = pthread_cond_init(&msgq->cond[i], NULL);
if (rv) {
int j;
for (j=0; j<i; j++) {
pthread_cond_destroy(&msgq->cond[j]);
}
return ECP_ERR;
}
}
conn->recv->msgq = msgq;
return ECP_OK;
}
void ecp_msgq_destroy(ECPRBConn *conn) {
ECPMsgQ *msgq = conn->recv->msgq;
int i;
for (i=0; i<ECP_MSGQ_MAX_MTYPE; i++) {
pthread_cond_destroy(&msgq->cond[i]);
}
conn->recv->msgq = NULL;
}
void ecp_msgq_start(ECPRBConn *conn, ecp_seq_t seq) {
ECPMsgQ *msgq = conn->recv->msgq;
msgq->seq_max = seq;
msgq->seq_start = seq + 1;
}
int ecp_msgq_push(ECPRBConn *conn, ecp_seq_t seq, unsigned char mtype) {
ECPRBRecv *buf = conn->recv;
ECPMsgQ *msgq = buf->msgq;
if (mtype >= ECP_MSGQ_MAX_MTYPE) return ECP_ERR_MTYPE;
if ((unsigned short)(msgq->idx_w[mtype] - msgq->idx_r[mtype]) == ECP_MSGQ_MAX_MSG) return ECP_ERR_FULL;
if (msgq->idx_w[mtype] == msgq->idx_r[mtype]) pthread_cond_signal(&msgq->cond[mtype]);
msgq->seq_msg[mtype][MSGQ_IDX_MASK(msgq->idx_w[mtype])] = seq;
msgq->idx_w[mtype]++;
if (ECP_SEQ_LT(msgq->seq_max, seq)) msgq->seq_max = seq;
return ECP_OK;
}
ssize_t ecp_msgq_pop(ECPRBConn *conn, unsigned char mtype, unsigned char *msg, size_t _msg_size, ecp_sts_t timeout) {
ECPRBRecv *buf = conn->recv;
ECPMsgQ *msgq = buf->msgq;
ECPRBuffer *rbuf = &buf->rbuf;
unsigned char *pld_buf;
unsigned char *msg_buf;
size_t pld_size, hdr_size, msg_size;
ecp_seq_t seq;
unsigned short idx;
int rv;
if (mtype >= ECP_MSGQ_MAX_MTYPE) return ECP_ERR_MTYPE;
if (msgq->idx_r[mtype] == msgq->idx_w[mtype]) {
if (timeout == -1) {
pthread_cond_wait(&msgq->cond[mtype], &buf->mutex);
} else {
struct timespec ts;
rv = pthread_cond_timedwait(&msgq->cond[mtype], &buf->mutex, abstime_ts(&ts, timeout));
if (rv) return ECP_ERR_TIMEOUT;
}
}
seq = msgq->seq_msg[mtype][MSGQ_IDX_MASK(msgq->idx_r[mtype])];
rv = _ecp_rbuf_msg_idx(rbuf, seq, &idx);
if (rv) return ECP_ERR;
pld_buf = rbuf->arr.pld[idx].buf;
pld_size = rbuf->arr.pld[idx].size;
msg_buf = ecp_pld_get_msg(pld_buf, pld_size);
if (msg_buf == NULL) return ECP_ERR;
hdr_size = msg_buf - pld_buf;
msg_size = pld_size - hdr_size;
rbuf->arr.pld[idx].flags &= ~ECP_RBUF_FLAG_IN_MSGQ;
// if (rbuf->arr.pld[idx].flags == 0);
msgq->idx_r[mtype]++;
if (msgq->seq_start == seq) {
int i;
unsigned short msg_cnt = msgq->seq_max - msgq->seq_start + 1;
for (i=0; i<msg_cnt; i++) {
if (rbuf->arr.pld[idx].flags & ECP_RBUF_FLAG_IN_MSGQ) break;
idx = ECP_RBUF_IDX_MASK(idx + 1, rbuf->arr_size);
}
msgq->seq_start += i;
}
if (_msg_size < msg_size) return ECP_ERR_FULL;
if (msg_size) memcpy(msg, msg_buf, msg_size);
return msg_size;
}
ssize_t ecp_msg_receive(ECPConnection *conn, unsigned char mtype, unsigned char *msg, size_t msg_size, ecp_sts_t timeout) {
ECPRBConn *_conn;
ssize_t rv;
_conn = ecp_rbuf_get_rbconn(conn);
if (_conn == NULL) return ECP_ERR;
pthread_mutex_lock(&_conn->recv->mutex);
rv = ecp_msgq_pop(_conn, mtype, msg, msg_size, timeout);
pthread_mutex_unlock(&_conn->recv->mutex);
return rv;
}
|
