Commit | Line | Data |
---|---|---|
d0254c7c MD |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
d14d33bf AM |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License, version 2 only, | |
7 | * as published by the Free Software Foundation. | |
d0254c7c MD |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
d14d33bf AM |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
d0254c7c MD |
17 | */ |
18 | ||
6c1c0768 | 19 | #define _LGPL_SOURCE |
d0254c7c MD |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
27 | #include <inttypes.h> | |
28 | #include <ctype.h> | |
7e66b1b0 JRJ |
29 | #include <assert.h> |
30 | ||
31 | #include <common/mi-lttng.h> | |
d0254c7c | 32 | |
c399183f | 33 | #include "../command.h" |
d0254c7c MD |
34 | |
35 | static int opt_event_type; | |
3ecec76a | 36 | static int opt_kernel; |
d0254c7c | 37 | static int opt_userspace; |
d0254c7c MD |
38 | |
39 | enum { | |
40 | OPT_HELP = 1, | |
d0254c7c MD |
41 | OPT_TRACEPOINT, |
42 | OPT_MARKER, | |
43 | OPT_PROBE, | |
44 | OPT_FUNCTION, | |
45 | OPT_FUNCTION_ENTRY, | |
a54bd42d | 46 | OPT_SYSCALL, |
eeac7d46 | 47 | OPT_USERSPACE, |
3ecec76a | 48 | OPT_KERNEL, |
679b4943 | 49 | OPT_LIST_OPTIONS, |
d0254c7c MD |
50 | }; |
51 | ||
cd80958d | 52 | static struct lttng_handle *handle; |
7e66b1b0 | 53 | static struct mi_writer *writer; |
cd80958d | 54 | |
d0254c7c MD |
55 | static struct poptOption long_options[] = { |
56 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
57 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
3ecec76a | 58 | {"kernel", 'k', POPT_ARG_NONE, 0, OPT_KERNEL, 0, 0}, |
4466912f | 59 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
d0254c7c | 60 | {"function", 0, POPT_ARG_NONE, 0, OPT_FUNCTION, 0, 0}, |
679b4943 | 61 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
d0254c7c MD |
62 | {0, 0, 0, 0, 0, 0, 0} |
63 | }; | |
64 | ||
d0254c7c | 65 | /* |
af87c45a | 66 | * Calibrate LTTng. |
d0254c7c | 67 | * |
af87c45a | 68 | * Returns a CMD_* error. |
d0254c7c MD |
69 | */ |
70 | static int calibrate_lttng(void) | |
71 | { | |
72 | int ret = CMD_SUCCESS; | |
73 | struct lttng_domain dom; | |
74 | struct lttng_calibrate calibrate; | |
75 | ||
441c16a7 MD |
76 | memset(&dom, 0, sizeof(dom)); |
77 | memset(&calibrate, 0, sizeof(calibrate)); | |
78 | ||
d0254c7c MD |
79 | /* Create lttng domain */ |
80 | if (opt_kernel) { | |
81 | dom.type = LTTNG_DOMAIN_KERNEL; | |
4466912f DG |
82 | } else if (opt_userspace) { |
83 | dom.type = LTTNG_DOMAIN_UST; | |
84 | } else { | |
3ecec76a PP |
85 | /* Checked by the caller. */ |
86 | assert(0); | |
d0254c7c MD |
87 | } |
88 | ||
cd80958d DG |
89 | handle = lttng_create_handle(NULL, &dom); |
90 | if (handle == NULL) { | |
af87c45a | 91 | ret = CMD_ERROR; |
4466912f | 92 | goto error; |
cd80958d DG |
93 | } |
94 | ||
4466912f DG |
95 | switch (opt_event_type) { |
96 | case LTTNG_EVENT_TRACEPOINT: | |
97 | DBG("Calibrating kernel tracepoints"); | |
98 | break; | |
99 | case LTTNG_EVENT_PROBE: | |
100 | DBG("Calibrating kernel probes"); | |
101 | break; | |
102 | case LTTNG_EVENT_FUNCTION: | |
103 | DBG("Calibrating kernel functions"); | |
104 | calibrate.type = LTTNG_CALIBRATE_FUNCTION; | |
105 | ret = lttng_calibrate(handle, &calibrate); | |
106 | if (ret < 0) { | |
8f3f773f | 107 | ERR("%s", lttng_strerror(ret)); |
4466912f | 108 | goto error; |
d0254c7c | 109 | } |
4466912f DG |
110 | MSG("%s calibration done", opt_kernel ? "Kernel" : "UST"); |
111 | break; | |
112 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
113 | DBG("Calibrating kernel function entry"); | |
114 | break; | |
115 | case LTTNG_EVENT_SYSCALL: | |
116 | DBG("Calibrating kernel syscall"); | |
117 | break; | |
118 | default: | |
1ab1ea0b | 119 | ret = CMD_UNDEFINED; |
4466912f | 120 | goto error; |
d0254c7c | 121 | } |
4466912f | 122 | |
7e66b1b0 JRJ |
123 | if (lttng_opt_mi) { |
124 | assert(writer); | |
125 | ret = mi_lttng_calibrate(writer, &calibrate); | |
126 | if (ret) { | |
127 | ret = CMD_ERROR; | |
128 | goto error; | |
129 | } | |
130 | } | |
af87c45a | 131 | |
4466912f | 132 | error: |
cd80958d DG |
133 | lttng_destroy_handle(handle); |
134 | ||
d0254c7c MD |
135 | return ret; |
136 | } | |
137 | ||
138 | /* | |
af87c45a | 139 | * Calibrate LTTng tracer. |
1c8d13c8 TD |
140 | * |
141 | * Returns a CMD_* error. | |
d0254c7c MD |
142 | */ |
143 | int cmd_calibrate(int argc, const char **argv) | |
144 | { | |
7e66b1b0 | 145 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
d0254c7c MD |
146 | static poptContext pc; |
147 | ||
148 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
149 | poptReadDefaultConfig(pc, 0); | |
150 | ||
151 | /* Default event type */ | |
4466912f | 152 | opt_event_type = LTTNG_EVENT_FUNCTION; |
d0254c7c MD |
153 | |
154 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
155 | switch (opt) { | |
156 | case OPT_HELP: | |
4ba92f18 | 157 | SHOW_HELP(); |
d0254c7c | 158 | goto end; |
d0254c7c | 159 | case OPT_TRACEPOINT: |
1ab1ea0b | 160 | ret = CMD_UNDEFINED; |
4466912f | 161 | goto end; |
d0254c7c | 162 | case OPT_MARKER: |
1ab1ea0b | 163 | ret = CMD_UNDEFINED; |
d0254c7c MD |
164 | goto end; |
165 | case OPT_PROBE: | |
1ab1ea0b | 166 | ret = CMD_UNDEFINED; |
d0254c7c MD |
167 | break; |
168 | case OPT_FUNCTION: | |
169 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
170 | break; | |
171 | case OPT_FUNCTION_ENTRY: | |
1ab1ea0b | 172 | ret = CMD_UNDEFINED; |
4466912f | 173 | goto end; |
a54bd42d | 174 | case OPT_SYSCALL: |
1ab1ea0b | 175 | ret = CMD_UNDEFINED; |
4466912f | 176 | goto end; |
eeac7d46 MD |
177 | case OPT_USERSPACE: |
178 | opt_userspace = 1; | |
eeac7d46 | 179 | break; |
3ecec76a PP |
180 | case OPT_KERNEL: |
181 | opt_kernel = 1; | |
182 | break; | |
679b4943 SM |
183 | case OPT_LIST_OPTIONS: |
184 | list_cmd_options(stdout, long_options); | |
679b4943 | 185 | goto end; |
d0254c7c | 186 | default: |
d0254c7c MD |
187 | ret = CMD_UNDEFINED; |
188 | goto end; | |
189 | } | |
190 | } | |
191 | ||
3ecec76a PP |
192 | ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace); |
193 | if (ret) { | |
194 | ret = CMD_ERROR; | |
195 | goto end; | |
196 | } | |
197 | ||
7e66b1b0 JRJ |
198 | /* Mi check */ |
199 | if (lttng_opt_mi) { | |
200 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
201 | if (!writer) { | |
202 | ret = -LTTNG_ERR_NOMEM; | |
203 | goto end; | |
204 | } | |
205 | ||
206 | /* Open command element */ | |
207 | ret = mi_lttng_writer_command_open(writer, | |
208 | mi_lttng_element_command_calibrate); | |
209 | if (ret) { | |
210 | ret = CMD_ERROR; | |
211 | goto end; | |
212 | } | |
213 | ||
214 | /* Open output element */ | |
215 | ret = mi_lttng_writer_open_element(writer, | |
216 | mi_lttng_element_command_output); | |
217 | if (ret) { | |
218 | ret = CMD_ERROR; | |
219 | goto end; | |
220 | } | |
221 | } | |
222 | ||
223 | command_ret = calibrate_lttng(); | |
224 | if (command_ret) { | |
225 | success = 0; | |
226 | } | |
227 | ||
228 | /* Mi closing */ | |
229 | if (lttng_opt_mi) { | |
230 | /* Close output element */ | |
231 | ret = mi_lttng_writer_close_element(writer); | |
232 | if (ret) { | |
233 | ret = CMD_ERROR; | |
234 | goto end; | |
235 | } | |
236 | ||
237 | /* Success ? */ | |
238 | ret = mi_lttng_writer_write_element_bool(writer, | |
239 | mi_lttng_element_command_success, success); | |
240 | if (ret) { | |
241 | ret = CMD_ERROR; | |
242 | goto end; | |
243 | } | |
244 | ||
245 | /* Command element close */ | |
246 | ret = mi_lttng_writer_command_close(writer); | |
247 | if (ret) { | |
248 | ret = CMD_ERROR; | |
249 | goto end; | |
250 | } | |
251 | } | |
d0254c7c MD |
252 | |
253 | end: | |
7e66b1b0 JRJ |
254 | /* Mi clean-up */ |
255 | if (writer && mi_lttng_writer_destroy(writer)) { | |
256 | /* Preserve original error code */ | |
257 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
258 | } | |
259 | ||
260 | /* Overwrite ret if an error occurred during calibrate_lttng() */ | |
261 | ret = command_ret ? command_ret : ret; | |
262 | ||
ca1c3607 | 263 | poptFreeContext(pc); |
d0254c7c MD |
264 | return ret; |
265 | } |