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f1e16794 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #ifndef _CONSUMER_H | |
19 | #define _CONSUMER_H | |
20 | ||
21 | #include <semaphore.h> | |
22 | ||
23 | #include <common/consumer.h> | |
00e2e675 DG |
24 | #include <lttng/lttng.h> |
25 | ||
26 | enum consumer_dst_type { | |
27 | CONSUMER_DST_LOCAL, | |
28 | CONSUMER_DST_NET, | |
29 | }; | |
f1e16794 DG |
30 | |
31 | struct consumer_data { | |
32 | enum lttng_consumer_type type; | |
33 | ||
34 | pthread_t thread; /* Worker thread interacting with the consumer */ | |
35 | sem_t sem; | |
36 | ||
37 | /* Mutex to control consumerd pid assignation */ | |
38 | pthread_mutex_t pid_mutex; | |
39 | pid_t pid; | |
40 | ||
41 | int err_sock; | |
42 | int cmd_sock; | |
43 | ||
44 | /* consumer error and command Unix socket path */ | |
45 | char err_unix_sock_path[PATH_MAX]; | |
46 | char cmd_unix_sock_path[PATH_MAX]; | |
47 | }; | |
48 | ||
00e2e675 DG |
49 | /* |
50 | * Network URIs | |
51 | */ | |
52 | struct consumer_net { | |
53 | /* | |
54 | * Indicate if URI type is set. Those flags should only be set when the | |
55 | * created URI is done AND valid. | |
56 | */ | |
57 | int control_isset; | |
58 | int data_isset; | |
59 | ||
60 | /* | |
61 | * The following two URIs MUST have the same destination address for | |
62 | * network streaming to work. Network hop are not yet supported. | |
63 | */ | |
64 | ||
65 | /* Control path for network streaming. */ | |
66 | struct lttng_uri control; | |
67 | ||
68 | /* Data path for network streaming. */ | |
69 | struct lttng_uri data; | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Consumer output object describing where and how to send data. | |
74 | */ | |
75 | struct consumer_output { | |
76 | /* Consumer socket file descriptor */ | |
77 | int sock; | |
78 | /* If the consumer is enabled meaning that should be used */ | |
79 | unsigned int enabled; | |
80 | enum consumer_dst_type type; | |
81 | /* | |
82 | * The net_seq_index is the index of the network stream on the consumer | |
83 | * side. It's basically the relayd socket file descriptor value so the | |
84 | * consumer can identify which streams goes with which socket. | |
85 | */ | |
86 | int net_seq_index; | |
87 | /* | |
88 | * Subdirectory path name used for both local and network consumer. | |
89 | */ | |
90 | char subdir[PATH_MAX]; | |
91 | union { | |
92 | char trace_path[PATH_MAX]; | |
93 | struct consumer_net net; | |
94 | } dst; | |
95 | }; | |
96 | ||
97 | struct consumer_output *consumer_create_output(enum consumer_dst_type type); | |
98 | struct consumer_output *consumer_copy_output(struct consumer_output *obj); | |
99 | void consumer_destroy_output(struct consumer_output *obj); | |
100 | int consumer_set_network_uri(struct consumer_output *obj, | |
101 | struct lttng_uri *uri); | |
102 | int consumer_send_fds(int sock, int *fds, size_t nb_fd); | |
103 | int consumer_send_stream(int sock, struct consumer_output *dst, | |
104 | struct lttcomm_consumer_msg *msg, int *fds, size_t nb_fd); | |
105 | int consumer_send_channel(int sock, struct lttcomm_consumer_msg *msg); | |
106 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
107 | enum lttng_consumer_command cmd, | |
108 | int channel_key, | |
109 | int stream_key, | |
110 | uint32_t state, | |
111 | enum lttng_event_output output, | |
112 | uint64_t mmap_len, | |
113 | uid_t uid, | |
114 | gid_t gid, | |
115 | int net_index, | |
116 | unsigned int metadata_flag, | |
117 | const char *name, | |
118 | const char *pathname); | |
119 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
120 | enum lttng_consumer_command cmd, | |
121 | int channel_key, | |
122 | uint64_t max_sb_size, | |
123 | uint64_t mmap_len, | |
124 | const char *name); | |
125 | ||
f1e16794 | 126 | #endif /* _CONSUMER_H */ |