forked from taosdata/TDengine
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathdnodeRead.c
More file actions
232 lines (188 loc) · 6.26 KB
/
dnodeRead.c
File metadata and controls
232 lines (188 loc) · 6.26 KB
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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "os.h"
#include "taoserror.h"
#include "taosmsg.h"
#include "tlog.h"
#include "tqueue.h"
#include "trpc.h"
#include "twal.h"
#include "dnodeMgmt.h"
#include "dnodeRead.h"
#include "vnode.h"
typedef struct {
SRspRet rspRet;
void *pCont;
int32_t contLen;
SRpcMsg rpcMsg;
} SReadMsg;
typedef struct {
pthread_t thread; // thread
int32_t workerId; // worker ID
} SReadWorker;
typedef struct {
int32_t max; // max number of workers
int32_t min; // min number of workers
int32_t num; // current number of workers
SReadWorker *readWorker;
} SReadWorkerPool;
static void *dnodeProcessReadQueue(void *param);
static void dnodeHandleIdleReadWorker(SReadWorker *);
// module global variable
static SReadWorkerPool readPool;
static taos_qset readQset;
int32_t dnodeInitRead() {
readQset = taosOpenQset();
readPool.min = 2;
readPool.max = tsNumOfCores * tsNumOfThreadsPerCore;
if (readPool.max <= readPool.min * 2) readPool.max = 2 * readPool.min;
readPool.readWorker = (SReadWorker *) calloc(sizeof(SReadWorker), readPool.max);
if (readPool.readWorker == NULL) return -1;
for (int i=0; i < readPool.max; ++i) {
SReadWorker *pWorker = readPool.readWorker + i;
pWorker->workerId = i;
}
dPrint("dnode read is opened");
return 0;
}
void dnodeCleanupRead() {
for (int i=0; i < readPool.max; ++i) {
SReadWorker *pWorker = readPool.readWorker + i;
if (pWorker->thread)
pthread_join(pWorker->thread, NULL);
}
taosCloseQset(readQset);
dPrint("dnode read is closed");
}
void dnodeRead(SRpcMsg *pMsg) {
int32_t queuedMsgNum = 0;
int32_t leftLen = pMsg->contLen;
char *pCont = (char *) pMsg->pCont;
void *pVnode;
dTrace("dnode %s msg incoming, thandle:%p", taosMsg[pMsg->msgType], pMsg->handle);
while (leftLen > 0) {
SMsgHead *pHead = (SMsgHead *) pCont;
pHead->vgId = htonl(pHead->vgId);
pHead->contLen = htonl(pHead->contLen);
if (pMsg->msgType == TSDB_MSG_TYPE_RETRIEVE) {
pVnode = vnodeGetVnode(pHead->vgId);
} else {
pVnode = vnodeAccquireVnode(pHead->vgId);
}
if (pVnode == NULL) {
leftLen -= pHead->contLen;
pCont -= pHead->contLen;
continue;
}
// put message into queue
taos_queue queue = vnodeGetRqueue(pVnode);
SReadMsg *pRead = (SReadMsg *)taosAllocateQitem(sizeof(SReadMsg));
pRead->rpcMsg = *pMsg;
pRead->pCont = pCont;
pRead->contLen = pHead->contLen;
taosWriteQitem(queue, TAOS_QTYPE_RPC, pRead);
// next vnode
leftLen -= pHead->contLen;
pCont -= pHead->contLen;
queuedMsgNum++;
}
if (queuedMsgNum == 0) {
SRpcMsg rpcRsp = {
.handle = pMsg->handle,
.pCont = NULL,
.contLen = 0,
.code = TSDB_CODE_INVALID_VGROUP_ID,
.msgType = 0
};
rpcSendResponse(&rpcRsp);
}
}
void *dnodeAllocateRqueue(void *pVnode) {
taos_queue queue = taosOpenQueue();
if (queue == NULL) return NULL;
taosAddIntoQset(readQset, queue, pVnode);
// spawn a thread to process queue
if (readPool.num < readPool.max) {
do {
SReadWorker *pWorker = readPool.readWorker + readPool.num;
pthread_attr_t thAttr;
pthread_attr_init(&thAttr);
pthread_attr_setdetachstate(&thAttr, PTHREAD_CREATE_JOINABLE);
if (pthread_create(&pWorker->thread, &thAttr, dnodeProcessReadQueue, pWorker) != 0) {
dError("failed to create thread to process read queue, reason:%s", strerror(errno));
}
pthread_attr_destroy(&thAttr);
readPool.num++;
dTrace("read worker:%d is launched, total:%d", pWorker->workerId, readPool.num);
} while (readPool.num < readPool.min);
}
dTrace("pVnode:%p, read queue:%p is allocated", pVnode, queue);
return queue;
}
void dnodeFreeRqueue(void *rqueue) {
taosCloseQueue(rqueue);
// dynamically adjust the number of threads
}
static void dnodeContinueExecuteQuery(void* pVnode, void* qhandle, SReadMsg *pMsg) {
SReadMsg *pRead = (SReadMsg *)taosAllocateQitem(sizeof(SReadMsg));
pRead->rpcMsg = pMsg->rpcMsg;
pRead->pCont = qhandle;
pRead->contLen = 0;
pRead->rpcMsg.msgType = TSDB_MSG_TYPE_QUERY;
taos_queue queue = vnodeGetRqueue(pVnode);
taosWriteQitem(queue, TAOS_QTYPE_RPC, pRead);
}
void dnodeSendRpcReadRsp(void *pVnode, SReadMsg *pRead, int32_t code) {
if (code == TSDB_CODE_ACTION_IN_PROGRESS) return;
if (code == TSDB_CODE_ACTION_NEED_REPROCESSED) {
dnodeContinueExecuteQuery(pVnode, pRead->rspRet.qhandle, pRead);
}
SRpcMsg rpcRsp = {
.handle = pRead->rpcMsg.handle,
.pCont = pRead->rspRet.rsp,
.contLen = pRead->rspRet.len,
.code = pRead->rspRet.code,
};
rpcSendResponse(&rpcRsp);
rpcFreeCont(pRead->rpcMsg.pCont);
}
static void *dnodeProcessReadQueue(void *param) {
SReadWorker *pWorker = param;
SReadMsg *pReadMsg;
int type;
void *pVnode;
while (1) {
if (taosReadQitemFromQset(readQset, &type, (void **)&pReadMsg, &pVnode) == 0) {
dnodeHandleIdleReadWorker(pWorker);
continue;
}
int32_t code = vnodeProcessRead(pVnode, pReadMsg->rpcMsg.msgType, pReadMsg->pCont, pReadMsg->contLen, &pReadMsg->rspRet);
dnodeSendRpcReadRsp(pVnode, pReadMsg, code);
taosFreeQitem(pReadMsg);
}
return NULL;
}
static void dnodeHandleIdleReadWorker(SReadWorker *pWorker) {
int32_t num = taosGetQueueNumber(readQset);
if (num == 0 || (num <= readPool.min && readPool.num > readPool.min)) {
readPool.num--;
dTrace("read worker:%d is released, total:%d", pWorker->workerId, readPool.num);
pthread_exit(NULL);
} else {
usleep(100);
sched_yield();
}
}