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
|
/* ------------------------------------------------------------------------ */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed 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. */
/* ------------------------------------------------------------------------ */
#ifndef HOST_SHARE_H_
#define HOST_SHARE_H_
#include "ObjectXML.h"
#include <time.h>
using namespace std;
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
/**
* The HostShare class. It represents a logical partition of a host...
*/
class HostShare : public ObjectXML
{
public:
HostShare(
int _max_disk=0,
int _max_mem=0,
int _max_cpu=0);
~HostShare(){};
/**
* Add a new VM to this share
* @param cpu requested by the VM
* @param mem requested by the VM
* @param disk requested by the VM
*/
void add(int cpu, int mem, int disk)
{
cpu_usage += cpu;
mem_usage += mem;
disk_usage += disk;
running_vms++;
}
/**
* Delete a VM from this share
* @param cpu requested by the VM
* @param mem requested by the VM
* @param disk requested by the VM
*/
void del(int cpu, int mem, int disk)
{
cpu_usage -= cpu;
mem_usage -= mem;
disk_usage -= disk;
running_vms--;
}
/**
* Check if this share can host a VM.
* @param cpu requested by the VM
* @param mem requested by the VM
* @param disk requested by the VM
*
* @return true if the share can host the VM or it is the only one
* configured
*/
bool test(int cpu, int mem, int disk) const
{
return (((max_cpu - cpu_usage ) >= cpu) &&
((max_mem - mem_usage ) >= mem) &&
((max_disk - disk_usage) >= disk));
}
/**
* Function to write a HostShare to an output stream
*/
friend ostream& operator<<(ostream& os, HostShare& hs);
/**
* Function to print the HostShare object into a string in
* XML format
* @param xml the resulting XML string
* @return a reference to the generated string
*/
string& to_xml(string& xml) const;
private:
int disk_usage; /**< Disk allocated to VMs (in Mb). */
int mem_usage; /**< Memory allocated to VMs (in Mb) */
int cpu_usage; /**< CPU allocated to VMs (in percentage) */
int max_disk; /**< Total disk capacity (in Mb) */
int max_mem; /**< Total memory capacity (in Mb) */
int max_cpu; /**< Total cpu capacity (in percentage) */
int free_disk; /**< Free disk from the IM monitor */
int free_mem; /**< Free memory from the IM monitor */
int free_cpu; /**< Free cpu from the IM monitor */
int used_disk; /**< Used disk from the IM monitor */
int used_mem; /**< Used memory from the IM monitor */
int used_cpu; /**< Used cpu from the IM monitor */
int running_vms;/**< Number of running VMs in this Host */
// ----------------------------------------
// Friends
// ----------------------------------------
friend class Host;
friend class HostPool;
/**
* Rebuilds the object from an xml node
* @param node The xml node pointer
*
* @return 0 on success, -1 otherwise
*/
int from_xml_node(const xmlNodePtr node);
};
#endif /*HOST_SHARE_H_*/
|
