-
Notifications
You must be signed in to change notification settings - Fork 41
/
handlemanager.h
123 lines (109 loc) · 3.89 KB
/
handlemanager.h
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
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
* @FileName: handlemanager.h
* @Description: TODO
* All rights Reserved, Designed By huih
* @Company: onexsoft
* @Author: hui
* @Version: V1.0
* @Date: 2016年10月27日 上午9:49:29
*
*/
#ifndef PROTOCOL_HANDLEMANAGER_H_
#define PROTOCOL_HANDLEMANAGER_H_
#include <map>
#include <vector>
#include <iostream>
#include "define.h"
#include "stringbuf.h"
//client prepared or cursor handle data define.
typedef struct _handle_data_t{
unsigned int preparedHandle;
unsigned int cursorHandle;
_handle_data_t() {
this->preparedHandle = 0;
this->cursorHandle = 0;
}
bool operator< (const _handle_data_t& a) const {
if (this->preparedHandle < a.preparedHandle && this->cursorHandle <= a.cursorHandle)
return true;
else if (this->cursorHandle < a.cursorHandle) {
return true;
} else {
return false;
}
}
}HandleData;
typedef HandleData FrontHandle;
typedef struct _data_packet_t{
void* dataPointer;
FreeFunc freeFunc;
_data_packet_t() {
this->dataPointer = NULL;
this->freeFunc = NULL;
}
}DataPacket;
typedef struct _backend_handle_data_t{
HandleData handle;
unsigned int hashCode;
void* pointer; //指向后端连接数据库
typedef std::vector<DataPacket> DataPacketVector;
DataPacketVector dataPacketVec; //建立prepared或者游标的数据包
_backend_handle_data_t() {
this->hashCode = 0;
this->pointer = NULL;
}
~_backend_handle_data_t() {
std::vector<DataPacket>::iterator it = dataPacketVec.begin();
for(; it != dataPacketVec.end(); ++it) {
if (it->freeFunc != NULL && it->dataPointer != NULL)
(*(it->freeFunc))(it->dataPointer);
}
}
}BackendHandle;
class HandleManager {
public:
HandleManager();
~HandleManager();
int add_handle(unsigned int backendPreparedHandle, unsigned int backendCursorHandle,
unsigned int hashCode, void* servns, FrontHandle& frontHandle);
//保存backendHandle,返回frontHandle.
int add_handle(const BackendHandle& backendHandle, FrontHandle& frontHandle, bool useGlobalId = true);
int get_backendHandle(FrontHandle frontHandle, BackendHandle& backendHandle);
FrontHandle* get_frontHandle(unsigned int backendPreparedHandle,
unsigned int backendCursorHandle, void* servns, unsigned int& hashCode);
void remove_handle(FrontHandle frontHandle);
int get_backendHandleBaseCursor(unsigned int cursorHandle, BackendHandle& backendHandle);
int get_backendHandleBasePrepared(unsigned int preparedHandle, BackendHandle& backendHandle);
void remove_handleBaseCursor(unsigned int cursorHandle);
void remove_handleBasePrepared(unsigned int preparedHandle);
void set_backendServer(void* ns);
private:
int get_globalHandleId(unsigned int& handleId);
void close_globalHandleId(unsigned int handle);
void show_fbHandleMap();
private:
//client prepared handle mapping onto backendHandleMap.
typedef std::map<FrontHandle, BackendHandle> FBHandleMap;
typedef std::map<unsigned int, char> HandleUseFlagMap;
FBHandleMap frontBackendHandleMap;//前端到后端handle的映射关系
HandleUseFlagMap globalHandleUseFlag;//记录已经使用过的handle.
unsigned int lastAllocHandle; //目前可以分配的handle值
};
#endif /* PROTOCOL_HANDLEMANAGER_H_ */