-
Notifications
You must be signed in to change notification settings - Fork 1
Expand file tree
/
Copy pathProcess.h
More file actions
188 lines (173 loc) · 4.35 KB
/
Copy pathProcess.h
File metadata and controls
188 lines (173 loc) · 4.35 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
#pragma once
#include "Function.h"
#include <memory.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
class CProcess
{
public:
CProcess() {
m_func = NULL;
memset(pipes, 0, sizeof(pipes));
}
~CProcess() {
if (m_func != NULL) {
delete m_func;
m_func = NULL;
}
}
template<typename _FUNCTION_, typename... _ARGS_>
int SetEntryFunction(_FUNCTION_ func, _ARGS_... args)
{
m_func = new CFunction<_FUNCTION_, _ARGS_...>(func, args...);
return 0;
}
int CreateSubProcess() {
if (m_func == NULL)return -1;
int ret = socketpair(AF_LOCAL, SOCK_STREAM, 0, pipes);
if (ret == -1)return -2;
pid_t pid = fork();
if (pid == -1)return -3;
if (pid == 0) {
//子进程
close(pipes[1]);//关闭掉写
pipes[1] = 0;
ret = (*m_func)();
exit(0);
}
//主进程
close(pipes[0]);
pipes[0] = 0;
m_pid = pid;
return 0;
}
int SendFD(int fd) {//主进程完成
struct msghdr msg;
iovec iov[2];
char buf[2][10] = { "edoyun","jueding" };
iov[0].iov_base = buf[0];
iov[0].iov_len = sizeof(buf[0]);
iov[1].iov_base = buf[1];
iov[1].iov_len = sizeof(buf[1]);
msg.msg_iov = iov;
msg.msg_iovlen = 2;
// 下面的数据，才是我们需要传递的。
cmsghdr* cmsg = (cmsghdr*)calloc(1, CMSG_LEN(sizeof(int)));
if (cmsg == NULL)return -1;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
*(int*)CMSG_DATA(cmsg) = fd;
msg.msg_control = cmsg;
msg.msg_controllen = cmsg->cmsg_len;
ssize_t ret = sendmsg(pipes[1], &msg, 0);
free(cmsg);
if (ret == -1) {
return -2;
}
return 0;
}
int RecvFD(int& fd)
{
msghdr msg;
iovec iov[2];
char buf[][10] = { "","" };
iov[0].iov_base = buf[0];
iov[0].iov_len = sizeof(buf[0]);
iov[1].iov_base = buf[1];
iov[1].iov_len = sizeof(buf[1]);
msg.msg_iov = iov;
msg.msg_iovlen = 2;
cmsghdr* cmsg = (cmsghdr*)calloc(1, CMSG_LEN(sizeof(int)));
if (cmsg == NULL)return -1;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
msg.msg_control = cmsg;
msg.msg_controllen = CMSG_LEN(sizeof(int));
ssize_t ret = recvmsg(pipes[0], &msg, 0);
if (ret == -1) {
free(cmsg);
return -2;
}
fd = *(int*)CMSG_DATA(cmsg);
free(cmsg);
return 0;
}
int SendSocket(int fd, const sockaddr_in* addrin) {//主进程完成
struct msghdr msg;
iovec iov;
char buf[20] = "";
bzero(&msg, sizeof(msg));
memcpy(buf, addrin, sizeof(sockaddr_in));
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
// 下面的数据，才是我们需要传递的。
cmsghdr* cmsg = (cmsghdr*)calloc(1, CMSG_LEN(sizeof(int)));
if (cmsg == NULL)return -1;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
*(int*)CMSG_DATA(cmsg) = fd;
msg.msg_control = cmsg;
msg.msg_controllen = cmsg->cmsg_len;
ssize_t ret = sendmsg(pipes[1], &msg, 0);
free(cmsg);
if (ret == -1) {
printf("********errno %d msg:%s\n", errno, strerror(errno));
return -2;
}
return 0;
}
int RecvSocket(int& fd, sockaddr_in* addrin)
{
msghdr msg;
iovec iov;
char buf[20] = "";
bzero(&msg, sizeof(msg));
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
cmsghdr* cmsg = (cmsghdr*)calloc(1, CMSG_LEN(sizeof(int)));
if (cmsg == NULL)return -1;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
msg.msg_control = cmsg;
msg.msg_controllen = CMSG_LEN(sizeof(int));
ssize_t ret = recvmsg(pipes[0], &msg, 0);
if (ret == -1) {
free(cmsg);
return -2;
}
memcpy(addrin, buf, sizeof(sockaddr_in));
fd = *(int*)CMSG_DATA(cmsg);
free(cmsg);
return 0;
}
static int SwitchDeamon() {
pid_t ret = fork();
if (ret == -1)return -1;
if (ret > 0)exit(0);//主进程到此为止
//子进程内容如下
ret = setsid();
if (ret == -1)return -2;//失败，则返回
ret = fork();
if (ret == -1)return -3;
if (ret > 0)exit(0);//子进程到此为止
//孙进程的内容如下，进入守护状态
for (int i = 0; i < 3; i++) close(i);
umask(0);
signal(SIGCHLD, SIG_IGN);
return 0;
}
private:
CFunctionBase* m_func;
pid_t m_pid;
int pipes[2];
};