X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fdestroy.c;h=2e473f519f3c52924eb7f3c40ac30b8ff8870ab0;hp=ad181d7c4343b72182269556bf689d593bd21d4d;hb=0de2479d5f5a287d31c69e34ea5202a69019f224;hpb=20fb9e0220fe6ca9d6fd52e4e3e41b898452a8f1 diff --git a/src/bin/lttng/commands/destroy.c b/src/bin/lttng/commands/destroy.c index ad181d7c4..2e473f519 100644 --- a/src/bin/lttng/commands/destroy.c +++ b/src/bin/lttng/commands/destroy.c @@ -1,18 +1,8 @@ /* - * Copyright (C) 2011 - David Goulet + * Copyright (C) 2011 David Goulet * - * 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 @@ -24,6 +14,7 @@ #include #include #include +#include #include "../command.h" @@ -35,6 +26,12 @@ static char *opt_session_name; static int opt_destroy_all; static int opt_no_wait; +#ifdef LTTNG_EMBED_HELP +static const char help_msg[] = +#include +; +#endif + /* Mi writer */ static struct mi_writer *writer; @@ -52,24 +49,6 @@ static struct poptOption long_options[] = { {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 * @@ -80,16 +59,21 @@ static int destroy_session(struct lttng_session *session) { int ret; char *session_name = NULL; - bool session_was_stopped; + 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_stopped = ret == -LTTNG_ERR_TRACE_ALREADY_STOPPED; + + 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) { @@ -98,31 +82,130 @@ static int destroy_session(struct lttng_session *session) } /* - * 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(""); } - if (!session_was_stopped) { + + if (!session_was_already_stopped) { /* * Don't print the event and packet loss warnings since the user * already saw them when stopping the trace. */ - print_session_stats(session->name); + ret = get_session_stats_str(session->name, &stats_str); + if (ret < 0) { + goto error; + } } - ret = lttng_destroy_session_no_wait(session->name); - if (ret < 0) { + ret_code = lttng_destroy_session_ext(session->name, &handle); + if (ret_code != LTTNG_OK) { + ret = -ret_code; goto error; } - MSG("Session %s destroyed", session->name); + 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; + } + + 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)) { @@ -139,7 +222,12 @@ static int destroy_session(struct lttng_session *session) ret = CMD_SUCCESS; error: + if (newline_needed) { + MSG(""); + } + lttng_destruction_handle_destroy(handle); free(session_name); + free(stats_str); return ret; } @@ -150,23 +238,27 @@ error: */ 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; } /* @@ -178,6 +270,7 @@ int cmd_destroy(int argc, const char **argv) 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; @@ -189,13 +282,12 @@ int cmd_destroy(int argc, const char **argv) 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; } @@ -237,7 +329,8 @@ int cmd_destroy(int argc, const char **argv) /* 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; } @@ -271,8 +364,10 @@ int cmd_destroy(int argc, const char **argv) 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); } - } } @@ -284,6 +379,14 @@ int cmd_destroy(int argc, const char **argv) } } + 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) {