/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _LGPL_SOURCE
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <stdbool.h>
+#include <lttng/lttng.h>
#include "../command.h"
static int opt_destroy_all;
static int opt_no_wait;
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-destroy.1.h>
+;
+#endif
+
/* Mi writer */
static struct mi_writer *writer;
{0, 0, 0, 0, 0, 0, 0}
};
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng destroy [NAME] [OPTIONS]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n");
- fprintf(ofp, "get it from the configuration directory (.lttng).\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -a, --all Destroy all sessions\n");
- fprintf(ofp, " --list-options Simple listing of options\n");
- fprintf(ofp, " -n, --no-wait Don't wait for data availability\n");
- fprintf(ofp, "\n");
-}
-
/*
* destroy_session
*
{
int ret;
char *session_name = NULL;
+ bool session_was_already_stopped;
+ enum lttng_error_code ret_code;
+ struct lttng_destruction_handle *handle = NULL;
+ enum lttng_destruction_handle_status status;
+ bool newline_needed = false, printed_destroy_msg = false;
+ enum lttng_rotation_state rotation_state;
+ char *stats_str = NULL;
ret = lttng_stop_tracing_no_wait(session->name);
if (ret < 0 && ret != -LTTNG_ERR_TRACE_ALREADY_STOPPED) {
ERR("%s", lttng_strerror(ret));
}
+
+ session_was_already_stopped = ret == -LTTNG_ERR_TRACE_ALREADY_STOPPED;
if (!opt_no_wait) {
- _MSG("Waiting for data availability");
- fflush(stdout);
do {
ret = lttng_data_pending(session->name);
if (ret < 0) {
}
/*
- * Data sleep time before retrying (in usec). Don't sleep if the call
- * returned value indicates availability.
+ * Data sleep time before retrying (in usec). Don't
+ * sleep if the call returned value indicates
+ * availability.
*/
if (ret) {
- usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME);
+ if (!printed_destroy_msg) {
+ _MSG("Destroying session %s",
+ session->name);
+ newline_needed = true;
+ printed_destroy_msg = true;
+ fflush(stdout);
+ }
+
+ usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US);
_MSG(".");
fflush(stdout);
}
} while (ret != 0);
- MSG("");
}
- ret = lttng_destroy_session_no_wait(session->name);
- if (ret < 0) {
+ if (!session_was_already_stopped) {
+ /*
+ * Don't print the event and packet loss warnings since the user
+ * already saw them when stopping the trace.
+ */
+ ret = get_session_stats_str(session->name, &stats_str);
+ if (ret < 0) {
+ goto error;
+ }
+ }
+
+ ret_code = lttng_destroy_session_ext(session->name, &handle);
+ if (ret_code != LTTNG_OK) {
+ ret = -ret_code;
+ goto error;
+ }
+
+ if (opt_no_wait) {
+ goto skip_wait_rotation;
+ }
+
+ do {
+ status = lttng_destruction_handle_wait_for_completion(
+ handle, DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US /
+ USEC_PER_MSEC);
+ switch (status) {
+ case LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT:
+ if (!printed_destroy_msg) {
+ _MSG("Destroying session %s", session->name);
+ newline_needed = true;
+ printed_destroy_msg = true;
+ }
+ _MSG(".");
+ fflush(stdout);
+ break;
+ case LTTNG_DESTRUCTION_HANDLE_STATUS_COMPLETED:
+ break;
+ default:
+ ERR("%sFailed to wait for the completion of the destruction of session \"%s\"",
+ newline_needed ? "\n" : "",
+ session->name);
+ newline_needed = false;
+ ret = -1;
+ goto error;
+ }
+ } while (status == LTTNG_DESTRUCTION_HANDLE_STATUS_TIMEOUT);
+
+ status = lttng_destruction_handle_get_result(handle, &ret_code);
+ if (status != LTTNG_DESTRUCTION_HANDLE_STATUS_OK) {
+ ERR("%sFailed to get the result of session destruction",
+ newline_needed ? "\n" : "");
+ ret = -1;
+ newline_needed = false;
+ goto error;
+ }
+ if (ret_code != LTTNG_OK) {
+ ret = -ret_code;
goto error;
}
- MSG("Session %s destroyed", session->name);
+ status = lttng_destruction_handle_get_rotation_state(
+ handle, &rotation_state);
+ if (status != LTTNG_DESTRUCTION_HANDLE_STATUS_OK) {
+ ERR("%sFailed to get rotation state from destruction handle",
+ newline_needed ? "\n" : "");
+ newline_needed = false;
+ goto skip_wait_rotation;
+ }
+
+ switch (rotation_state) {
+ case LTTNG_ROTATION_STATE_NO_ROTATION:
+ break;
+ case LTTNG_ROTATION_STATE_COMPLETED:
+ {
+ const struct lttng_trace_archive_location *location;
+
+ status = lttng_destruction_handle_get_archive_location(
+ handle, &location);
+ if (status == LTTNG_DESTRUCTION_HANDLE_STATUS_OK) {
+ ret = print_trace_archive_location(
+ location, session->name);
+ if (ret) {
+ ERR("%sFailed to print the location of trace archive",
+ newline_needed ? "\n" : "");
+ newline_needed = false;
+ goto skip_wait_rotation;
+ }
+ break;
+ }
+ /* fall-through. */
+ }
+ default:
+ ERR("%sFailed to get the location of the rotation performed during the session's destruction",
+ newline_needed ? "\n" : "");
+ newline_needed = false;
+ goto skip_wait_rotation;
+ }
+skip_wait_rotation:
+ MSG("%sSession %s destroyed", newline_needed ? "\n" : "",
+ session->name);
+ newline_needed = false;
+ if (stats_str) {
+ MSG("%s", stats_str);
+ }
session_name = get_session_name_quiet();
if (session_name && !strncmp(session->name, session_name, NAME_MAX)) {
ret = CMD_SUCCESS;
error:
+ if (newline_needed) {
+ MSG("");
+ }
+ lttng_destruction_handle_destroy(handle);
free(session_name);
+ free(stats_str);
return ret;
}
*/
static int destroy_all_sessions(struct lttng_session *sessions, int count)
{
- int i, ret = CMD_SUCCESS;
+ int i;
+ bool error_occurred = false;
+ assert(count >= 0);
if (count == 0) {
MSG("No session found, nothing to do.");
- } else if (count < 0) {
- ERR("%s", lttng_strerror(ret));
- goto error;
}
for (i = 0; i < count; i++) {
- ret = destroy_session(&sessions[i]);
+ int ret = destroy_session(&sessions[i]);
+
if (ret < 0) {
- goto error;
+ ERR("%s during the destruction of session \"%s\"",
+ lttng_strerror(ret),
+ sessions[i].name);
+ /* Continue to next session. */
+ error_occurred = true;
}
}
-error:
- return ret;
+
+ return error_occurred ? CMD_ERROR : CMD_SUCCESS;
}
/*
int ret = CMD_SUCCESS , i, command_ret = CMD_SUCCESS, success = 1;
static poptContext pc;
char *session_name = NULL;
+ const char *leftover = NULL;
struct lttng_session *sessions;
int count;
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stdout);
+ SHOW_HELP();
break;
case OPT_LIST_OPTIONS:
list_cmd_options(stdout, long_options);
break;
default:
- usage(stderr);
ret = CMD_UNDEFINED;
break;
}
/* Recuperate all sessions for further operation */
count = lttng_list_sessions(&sessions);
if (count < 0) {
- command_ret = count;
+ ERR("%s", lttng_strerror(count));
+ command_ret = CMD_ERROR;
success = 0;
goto mi_closing;
}
command_ret = destroy_session(&sessions[i]);
if (command_ret) {
success = 0;
+ ERR("%s during the destruction of session \"%s\"",
+ lttng_strerror(command_ret),
+ sessions[i].name);
}
-
}
}
}
}
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
+ success = 0;
+ goto mi_closing;
+ }
+
mi_closing:
/* Mi closing */
if (lttng_opt_mi) {
projects / lttng-tools.git / blobdiff