2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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 only,
6 * as published by the Free Software Foundation.
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.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include <sys/types.h>
27 #include "../command.h"
29 #include <common/sessiond-comm/sessiond-comm.h>
31 static char *opt_session_name
;
32 static int opt_no_wait
;
39 static struct poptOption long_options
[] = {
40 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
41 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
42 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
43 {"no-wait", 'n', POPT_ARG_VAL
, &opt_no_wait
, 1, 0, 0},
50 static void usage(FILE *ofp
)
52 fprintf(ofp
, "usage: lttng stop [NAME] [OPTIONS]\n");
54 fprintf(ofp
, "Where NAME is an optional session name. If not specified, lttng will\n");
55 fprintf(ofp
, "get it from the configuration directory (.lttng).\n");
57 fprintf(ofp
, "Options:\n");
58 fprintf(ofp
, " -h, --help Show this help\n");
59 fprintf(ofp
, " --list-options Simple listing of options\n");
60 fprintf(ofp
, " -n, --no-wait Don't wait for data availability\n");
65 * Start tracing for all trace of the session.
67 static int stop_tracing(void)
72 if (opt_session_name
== NULL
) {
73 session_name
= get_session_name();
74 if (session_name
== NULL
) {
79 session_name
= opt_session_name
;
82 ret
= lttng_stop_tracing_no_wait(session_name
);
85 case LTTNG_ERR_TRACE_ALREADY_STOPPED
:
86 WARN("Tracing already stopped for session %s", session_name
);
89 ERR("%s", lttng_strerror(ret
));
96 _MSG("Waiting for data availability");
99 ret
= lttng_data_pending(session_name
);
101 /* Return the data available call error. */
106 * Data sleep time before retrying (in usec). Don't sleep if the call
107 * returned value indicates availability.
110 usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME
);
120 MSG("Tracing stopped for session %s", session_name
);
123 if (opt_session_name
== NULL
) {
134 * The 'stop <options>' first level command
136 int cmd_stop(int argc
, const char **argv
)
138 int opt
, ret
= CMD_SUCCESS
;
139 static poptContext pc
;
141 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
142 poptReadDefaultConfig(pc
, 0);
144 while ((opt
= poptGetNextOpt(pc
)) != -1) {
149 case OPT_LIST_OPTIONS
:
150 list_cmd_options(stdout
, long_options
);
159 opt_session_name
= (char*) poptGetArg(pc
);
161 ret
= stop_tracing();