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1fc22eb4 JD |
1 | /* |
2 | * Copyright (C) 2011 Mathieu Bain <mathieu.bain@polymtl.ca> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License Version 2 as | |
6 | * published by the Free Software Foundation; | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
16 | * MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #include <babeltrace/babeltrace.h> | |
20 | ||
21 | #include "lttngtoptypes.h" | |
22 | #include "common.h" | |
23 | #include "iostreamtop.h" | |
24 | ||
25 | #include <stdlib.h> | |
26 | ||
27 | int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm, | |
28 | unsigned long timestamp, int cpu_id, int ret) | |
29 | { | |
30 | struct processtop *tmp; | |
31 | int err = 0; | |
32 | ||
33 | tmp = get_proc(ctx, tid, comm, timestamp); | |
34 | if ((tmp->iostream->syscall_info != NULL) && (tmp->iostream->syscall_info->cpu_id == cpu_id)) { | |
35 | if (tmp->iostream->syscall_info->type == __NR_read && ret > 0) { | |
36 | tmp->iostream->ret_read += ret; | |
37 | tmp->iostream->ret_total += ret; | |
38 | } else if(tmp->iostream->syscall_info->type == __NR_write && ret > 0) { | |
39 | tmp->iostream->ret_write += ret; | |
40 | tmp->iostream->ret_total += ret; | |
41 | } else{ | |
42 | err = -1; | |
43 | } | |
44 | free(tmp->iostream->syscall_info); | |
45 | tmp->iostream->syscall_info = NULL; | |
46 | } | |
47 | ||
48 | return err; | |
49 | } | |
50 | ||
51 | enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data, | |
52 | void *private_data) | |
53 | { | |
54 | struct definition *scope; | |
55 | unsigned long timestamp; | |
56 | char *comm; | |
57 | uint64_t ret, tid; | |
58 | int64_t cpu_id; | |
59 | ||
60 | timestamp = bt_ctf_get_timestamp(call_data); | |
61 | if (timestamp == -1ULL) | |
62 | goto error; | |
63 | ||
64 | scope = bt_ctf_get_top_level_scope(call_data, | |
65 | BT_STREAM_EVENT_CONTEXT); | |
66 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, | |
67 | scope, "_procname")); | |
68 | if (bt_ctf_field_get_error()) { | |
69 | fprintf(stderr, "Missing procname context info\n"); | |
70 | goto error; | |
71 | } | |
72 | ||
73 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, | |
74 | scope, "_tid")); | |
75 | if (bt_ctf_field_get_error()) { | |
76 | fprintf(stderr, "Missing tid context info\n"); | |
77 | goto error; | |
78 | } | |
79 | ||
80 | scope = bt_ctf_get_top_level_scope(call_data, | |
81 | BT_EVENT_FIELDS); | |
82 | ret = bt_ctf_get_int64(bt_ctf_get_field(call_data, | |
83 | scope, "_ret")); | |
84 | if (bt_ctf_field_get_error()) { | |
85 | fprintf(stderr, "Missing ret context info\n"); | |
86 | goto error; | |
87 | } | |
88 | ||
89 | scope = bt_ctf_get_top_level_scope(call_data, | |
90 | BT_STREAM_PACKET_CONTEXT); | |
91 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, | |
92 | scope, "cpu_id")); | |
93 | if (bt_ctf_field_get_error()) { | |
94 | fprintf(stderr, "Missing cpu_id context info\n"); | |
95 | goto error; | |
96 | } | |
97 | ||
98 | /* | |
99 | * if we encounter an exit_syscall and it is not for a syscall read or write | |
100 | * we just abort the execution of this callback | |
101 | */ | |
102 | if ((update_iostream_ret(<tngtop, tid, comm, timestamp, cpu_id, ret)) < 0) | |
103 | return BT_CB_ERROR_CONTINUE; | |
104 | ||
105 | return BT_CB_OK; | |
106 | ||
107 | error: | |
108 | return BT_CB_ERROR_STOP; | |
109 | } | |
110 | ||
111 | ||
112 | enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data, | |
113 | void *private_data) | |
114 | { | |
115 | struct definition *scope; | |
116 | struct processtop *tmp; | |
117 | struct syscalls *syscall_info; | |
118 | unsigned long timestamp; | |
119 | uint64_t cpu_id; | |
120 | char *comm; | |
121 | int64_t tid; | |
122 | ||
123 | timestamp = bt_ctf_get_timestamp(call_data); | |
124 | if (timestamp == -1ULL) | |
125 | goto error; | |
126 | ||
127 | scope = bt_ctf_get_top_level_scope(call_data, | |
128 | BT_STREAM_EVENT_CONTEXT); | |
129 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, | |
130 | scope, "_procname")); | |
131 | if (bt_ctf_field_get_error()) { | |
132 | fprintf(stderr, "Missing procname context info\n"); | |
133 | goto error; | |
134 | } | |
135 | ||
136 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, | |
137 | scope, "_tid")); | |
138 | if (bt_ctf_field_get_error()) { | |
139 | fprintf(stderr, "Missing tid context info\n"); | |
140 | goto error; | |
141 | } | |
142 | ||
143 | scope = bt_ctf_get_top_level_scope(call_data, | |
144 | BT_STREAM_PACKET_CONTEXT); | |
145 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, | |
146 | scope, "cpu_id")); | |
147 | if (bt_ctf_field_get_error()) { | |
148 | fprintf(stderr, "Missing cpu_id context info\n"); | |
149 | goto error; | |
150 | } | |
151 | ||
152 | syscall_info = malloc(sizeof(struct syscalls)); | |
153 | syscall_info->cpu_id = cpu_id; | |
154 | syscall_info->type = __NR_write; | |
155 | syscall_info->tid = tid; | |
156 | tmp = get_proc(<tngtop, tid, comm, timestamp); | |
157 | tmp->iostream->syscall_info = syscall_info; | |
158 | ||
159 | return BT_CB_OK; | |
160 | ||
161 | error: | |
162 | return BT_CB_ERROR_STOP; | |
163 | } | |
164 | ||
165 | enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data, | |
166 | void *private_data) | |
167 | { | |
168 | struct processtop *tmp; | |
169 | struct definition *scope; | |
170 | struct syscalls * syscall_info; | |
171 | unsigned long timestamp; | |
172 | uint64_t cpu_id; | |
173 | char *comm; | |
174 | int64_t tid; | |
175 | ||
176 | timestamp = bt_ctf_get_timestamp(call_data); | |
177 | if (timestamp == -1ULL) | |
178 | goto error; | |
179 | ||
180 | scope = bt_ctf_get_top_level_scope(call_data, | |
181 | BT_STREAM_EVENT_CONTEXT); | |
182 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, | |
183 | scope, "_procname")); | |
184 | if (bt_ctf_field_get_error()) { | |
185 | fprintf(stderr, "Missing procname context info\n"); | |
186 | goto error; | |
187 | } | |
188 | ||
189 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, | |
190 | scope, "_tid")); | |
191 | if (bt_ctf_field_get_error()) { | |
192 | fprintf(stderr, "Missing tid context info\n"); | |
193 | goto error; | |
194 | } | |
195 | ||
196 | scope = bt_ctf_get_top_level_scope(call_data, | |
197 | BT_STREAM_PACKET_CONTEXT); | |
198 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, | |
199 | scope, "cpu_id")); | |
200 | if (bt_ctf_field_get_error()) { | |
201 | fprintf(stderr, "Missing cpu_id context info\n"); | |
202 | goto error; | |
203 | } | |
204 | ||
205 | syscall_info = malloc(sizeof(struct syscalls)); | |
206 | syscall_info->cpu_id = cpu_id; | |
207 | syscall_info->type = __NR_read; | |
208 | syscall_info->tid = tid; | |
209 | tmp = get_proc(<tngtop, tid, comm, timestamp); | |
210 | tmp->iostream->syscall_info = syscall_info; | |
211 | ||
212 | return BT_CB_OK; | |
213 | ||
214 | error: | |
215 | return BT_CB_ERROR_STOP; | |
216 | } | |
217 |