X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Flist.c;h=b436777d671b74bb2165d97eae9a5e6a1c6604e7;hp=6f37254e41c35ce6de41c1215483ecee9058a212;hb=2fa605f7de6b95f50fc864072bc1445c61eb2c79;hpb=10a8a2237343699e3923d87e24dbf2d7fe225377 diff --git a/src/bin/lttng/commands/list.c b/src/bin/lttng/commands/list.c index 6f37254e4..b436777d6 100644 --- a/src/bin/lttng/commands/list.c +++ b/src/bin/lttng/commands/list.c @@ -1,22 +1,22 @@ /* * 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 - * as published by the Free Software Foundation; only version 2 - * of the License. + * 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. * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * 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 _GNU_SOURCE +#define _LGPL_SOURCE #include #include #include @@ -24,14 +24,19 @@ #include #include -#include "../cmd.h" +#include + +#include "../command.h" -static int opt_pid; static int opt_userspace; -static char *opt_cmd_name; static int opt_kernel; +static int opt_jul; +static int opt_log4j; +static int opt_python; static char *opt_channel; static int opt_domain; +static int opt_fields; +static int opt_syscall; const char *indent4 = " "; const char *indent6 = " "; @@ -40,18 +45,25 @@ const char *indent8 = " "; enum { OPT_HELP = 1, OPT_USERSPACE, + OPT_LIST_OPTIONS, }; static struct lttng_handle *handle; +static struct mi_writer *writer; static struct poptOption long_options[] = { /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ - {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, - {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, - {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, - {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, - {"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0}, - {"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0}, + {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, + {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, + {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, + {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, + {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, + {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, + {"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0}, + {"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0}, + {"fields", 'f', POPT_ARG_VAL, &opt_fields, 1, 0, 0}, + {"syscall", 'S', POPT_ARG_VAL, &opt_syscall, 1, 0, 0}, + {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, {0, 0, 0, 0, 0, 0, 0} }; @@ -60,19 +72,24 @@ static struct poptOption long_options[] = { */ static void usage(FILE *ofp) { - fprintf(ofp, "usage: lttng list [[-k] [-u] [-p PID] [SESSION []]]\n"); + fprintf(ofp, "usage: lttng list [OPTIONS] [SESSION [SESSION OPTIONS]]\n"); fprintf(ofp, "\n"); fprintf(ofp, "With no arguments, list available tracing session(s)\n"); fprintf(ofp, "\n"); - fprintf(ofp, "With -k alone, list available kernel events\n"); - fprintf(ofp, "With -u alone, list available userspace events\n"); + fprintf(ofp, "Without a session, -k lists available kernel events\n"); + fprintf(ofp, "Without a session, -u lists available userspace events\n"); fprintf(ofp, "\n"); fprintf(ofp, " -h, --help Show this help\n"); + fprintf(ofp, " --list-options Simple listing of options\n"); fprintf(ofp, " -k, --kernel Select kernel domain\n"); fprintf(ofp, " -u, --userspace Select user-space domain.\n"); - fprintf(ofp, " -p, --pid PID List user-space events by PID\n"); + fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); + fprintf(ofp, " -l, --log4j Apply for Java application using LOG4J\n"); + fprintf(ofp, " -p, --python Apply for Python application using logging\n"); + fprintf(ofp, " -f, --fields List event fields.\n"); + fprintf(ofp, " --syscall List available system calls.\n"); fprintf(ofp, "\n"); - fprintf(ofp, "Options:\n"); + fprintf(ofp, "Session Options:\n"); fprintf(ofp, " -c, --channel NAME List details of a channel\n"); fprintf(ofp, " -d, --domain List available domain(s)\n"); fprintf(ofp, "\n"); @@ -87,9 +104,9 @@ static void usage(FILE *ofp) static char *get_cmdline_by_pid(pid_t pid) { int ret; - FILE *fp; + FILE *fp = NULL; char *cmdline = NULL; - char path[24]; /* Can't go bigger than /proc/65535/cmdline */ + char path[20]; /* Can't go bigger than /proc/65535/cmdline */ snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); fp = fopen(path, "r"); @@ -98,14 +115,20 @@ static char *get_cmdline_by_pid(pid_t pid) } /* Caller must free() *cmdline */ - cmdline = malloc(PATH_MAX); + cmdline = zmalloc(PATH_MAX); + if (!cmdline) { + PERROR("malloc cmdline"); + goto end; + } ret = fread(cmdline, 1, PATH_MAX, fp); if (ret < 0) { - perror("fread proc list"); + PERROR("fread proc list"); } - fclose(fp); end: + if (fp) { + fclose(fp); + } return cmdline; } @@ -113,13 +136,23 @@ static const char *active_string(int value) { switch (value) { - case 0: return " [inactive]"; - case 1: return " [active]"; + case 0: return "inactive"; + case 1: return "active"; case -1: return ""; default: return NULL; } } +static const char *snapshot_string(int value) +{ + switch (value) { + case 1: + return " snapshot"; + default: + return ""; + } +} + static const char *enabled_string(int value) { @@ -132,22 +165,49 @@ const char *enabled_string(int value) } static -const char *loglevel_string_pre(const char *loglevel) +const char *filter_string(int value) { - if (loglevel[0] == '\0') { - return ""; - } else { - return " (loglevel: "; + switch (value) { + case 1: return " [with filter]"; + default: return ""; } } static -const char *loglevel_string_post(const char *loglevel) +const char *exclusion_string(int value) { - if (loglevel[0] == '\0') { - return ""; + switch (value) { + case 1: return " [has exclusions]"; + default: return ""; + } +} + +static const char *logleveltype_string(enum lttng_loglevel_type value) +{ + switch (value) { + case LTTNG_EVENT_LOGLEVEL_ALL: + return ":"; + case LTTNG_EVENT_LOGLEVEL_RANGE: + return " <="; + case LTTNG_EVENT_LOGLEVEL_SINGLE: + return " =="; + default: + return " <>"; + } +} + +static const char *bitness_event(enum lttng_event_flag flags) +{ + if (flags & LTTNG_EVENT_FLAG_SYSCALL_32) { + if (flags & LTTNG_EVENT_FLAG_SYSCALL_64) { + return " [32/64-bit]"; + } else { + return " [32-bit]"; + } + } else if (flags & LTTNG_EVENT_FLAG_SYSCALL_64) { + return " [64-bit]"; } else { - return ")"; + return ""; } } @@ -159,28 +219,41 @@ static void print_events(struct lttng_event *event) switch (event->type) { case LTTNG_EVENT_TRACEPOINT: { - char ll_value[LTTNG_SYMBOL_NAME_LEN] = ""; - - if (event->loglevel[0] != '\0') { - int ret; - - ret = snprintf(ll_value, LTTNG_SYMBOL_NAME_LEN, - " (%lld)", (long long) event->loglevel_value); - if (ret < 0) - ERR("snprintf error"); - } - MSG("%s%s%s%s%s%s (type: tracepoint)%s", indent6, + if (event->loglevel != -1) { + MSG("%s%s (loglevel%s %s (%d)) (type: tracepoint)%s%s%s", + indent6, event->name, - loglevel_string_pre(event->loglevel), + logleveltype_string(event->loglevel_type), + mi_lttng_loglevel_string(event->loglevel, handle->domain.type), event->loglevel, - ll_value, - loglevel_string_post(event->loglevel), - enabled_string(event->enabled)); + enabled_string(event->enabled), + exclusion_string(event->exclusion), + filter_string(event->filter)); + } else { + MSG("%s%s (type: tracepoint)%s%s%s", + indent6, + event->name, + enabled_string(event->enabled), + exclusion_string(event->exclusion), + filter_string(event->filter)); + } break; } + case LTTNG_EVENT_FUNCTION: + MSG("%s%s (type: function)%s%s", indent6, + event->name, enabled_string(event->enabled), + filter_string(event->filter)); + if (event->attr.probe.addr != 0) { + MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr); + } else { + MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset); + MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name); + } + break; case LTTNG_EVENT_PROBE: - MSG("%s%s (type: probe)%s", indent6, - event->name, enabled_string(event->enabled)); + MSG("%s%s (type: probe)%s%s", indent6, + event->name, enabled_string(event->enabled), + filter_string(event->filter)); if (event->attr.probe.addr != 0) { MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr); } else { @@ -188,24 +261,22 @@ static void print_events(struct lttng_event *event) MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name); } break; - case LTTNG_EVENT_FUNCTION: case LTTNG_EVENT_FUNCTION_ENTRY: - MSG("%s%s (type: function)%s", indent6, - event->name, enabled_string(event->enabled)); + MSG("%s%s (type: function)%s%s", indent6, + event->name, enabled_string(event->enabled), + filter_string(event->filter)); MSG("%ssymbol: \"%s\"", indent8, event->attr.ftrace.symbol_name); break; case LTTNG_EVENT_SYSCALL: - MSG("%s (type: syscall)%s", indent6, - enabled_string(event->enabled)); + MSG("%s%s%s%s%s", indent6, event->name, + (opt_syscall ? "" : " (type:syscall)"), + enabled_string(event->enabled), + bitness_event(event->flags)); break; case LTTNG_EVENT_NOOP: - MSG("%s (type: noop)%s", indent6, - enabled_string(event->enabled)); - break; - case LTTNG_EVENT_TRACEPOINT_LOGLEVEL: - MSG("%s%s (type: tracepoint loglevel)%s", indent6, - event->name, - enabled_string(event->enabled)); + MSG("%s (type: noop)%s%s", indent6, + enabled_string(event->enabled), + filter_string(event->filter)); break; case LTTNG_EVENT_ALL: /* We should never have "all" events in list. */ @@ -214,268 +285,1167 @@ static void print_events(struct lttng_event *event) } } +static const char *field_type(struct lttng_event_field *field) +{ + switch(field->type) { + case LTTNG_EVENT_FIELD_INTEGER: + return "integer"; + case LTTNG_EVENT_FIELD_ENUM: + return "enum"; + case LTTNG_EVENT_FIELD_FLOAT: + return "float"; + case LTTNG_EVENT_FIELD_STRING: + return "string"; + case LTTNG_EVENT_FIELD_OTHER: + default: /* fall-through */ + return "unknown"; + } +} + /* - * Ask session daemon for all user space tracepoints available. + * Pretty print single event fields. */ -static int list_ust_events(void) +static void print_event_field(struct lttng_event_field *field) +{ + if (!field->field_name[0]) { + return; + } + MSG("%sfield: %s (%s)%s", indent8, field->field_name, + field_type(field), field->nowrite ? " [no write]" : ""); +} + +/* + * Machine interface + * Jul and ust event listing + */ +static int mi_list_agent_ust_events(struct lttng_event *events, int count, + struct lttng_domain *domain) +{ + int ret, i; + pid_t cur_pid = 0; + char *cmdline = NULL; + int pid_element_open = 0; + + /* Open domains element */ + ret = mi_lttng_domains_open(writer); + if (ret) { + goto end; + } + + /* Write domain */ + ret = mi_lttng_domain(writer, domain, 1); + if (ret) { + goto end; + } + + /* Open pids element */ + ret = mi_lttng_pids_open(writer); + if (ret) { + goto end; + } + + for (i = 0; i < count; i++) { + if (cur_pid != events[i].pid) { + if (pid_element_open) { + /* Close the previous events and pid element */ + ret = mi_lttng_close_multi_element(writer, 2); + if (ret) { + goto end; + } + pid_element_open = 0; + } + + cur_pid = events[i].pid; + cmdline = get_cmdline_by_pid(cur_pid); + if (!cmdline) { + ret = CMD_ERROR; + goto end; + } + + if (!pid_element_open) { + /* Open and write a pid element */ + ret = mi_lttng_pid(writer, cur_pid, cmdline, 1); + if (ret) { + goto error; + } + + /* Open events element */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto error; + } + + pid_element_open = 1; + } + free(cmdline); + } + + /* Write an event */ + ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type); + if (ret) { + goto end; + } + } + + /* Close pids */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto end; + } + + /* Close domain, domains */ + ret = mi_lttng_close_multi_element(writer, 2); +end: + return ret; +error: + free(cmdline); + return ret; +} + +static int list_agent_events(void) { - int i, size; + int i, size, ret = CMD_SUCCESS; struct lttng_domain domain; struct lttng_handle *handle; struct lttng_event *event_list; pid_t cur_pid = 0; + char *cmdline = NULL; + const char *agent_domain_str; + + memset(&domain, 0, sizeof(domain)); + if (opt_jul) { + domain.type = LTTNG_DOMAIN_JUL; + } else if (opt_log4j) { + domain.type = LTTNG_DOMAIN_LOG4J; + } else if (opt_python) { + domain.type = LTTNG_DOMAIN_PYTHON; + } - DBG("Getting UST tracing events"); + agent_domain_str = get_domain_str(domain.type); - domain.type = LTTNG_DOMAIN_UST; + DBG("Getting %s tracing events", agent_domain_str); handle = lttng_create_handle(NULL, &domain); if (handle == NULL) { - goto error; + ret = CMD_ERROR; + goto end; } size = lttng_list_tracepoints(handle, &event_list); if (size < 0) { - ERR("Unable to list UST events"); - return size; - } - - MSG("UST events:\n-------------"); - - if (size == 0) { - MSG("None"); + ERR("Unable to list %s events: %s", agent_domain_str, + lttng_strerror(size)); + ret = CMD_ERROR; + goto end; } - for (i = 0; i < size; i++) { - if (cur_pid != event_list[i].pid) { - cur_pid = event_list[i].pid; - MSG("\nPID: %d - Name: %s", cur_pid, get_cmdline_by_pid(cur_pid)); + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_agent_ust_events(event_list, size, &domain); + if (ret) { + ret = CMD_ERROR; + goto error; } - print_events(&event_list[i]); - } + } else { + /* Pretty print */ + MSG("%s events (Logger name):\n-------------------------", + agent_domain_str); - MSG(""); + if (size == 0) { + MSG("None"); + } - free(event_list); + for (i = 0; i < size; i++) { + if (cur_pid != event_list[i].pid) { + cur_pid = event_list[i].pid; + cmdline = get_cmdline_by_pid(cur_pid); + if (cmdline == NULL) { + ret = CMD_ERROR; + goto error; + } + MSG("\nPID: %d - Name: %s", cur_pid, cmdline); + free(cmdline); + } + MSG("%s- %s", indent6, event_list[i].name); + } - return CMD_SUCCESS; + MSG(""); + } error: - return -1; + free(event_list); +end: + lttng_destroy_handle(handle); + return ret; } /* - * Ask for all trace events in the kernel and pretty print them. + * Ask session daemon for all user space tracepoints available. */ -static int list_kernel_events(void) +static int list_ust_events(void) { - int i, size; + int i, size, ret = CMD_SUCCESS; struct lttng_domain domain; struct lttng_handle *handle; struct lttng_event *event_list; + pid_t cur_pid = 0; + char *cmdline = NULL; - DBG("Getting kernel tracing events"); + memset(&domain, 0, sizeof(domain)); - domain.type = LTTNG_DOMAIN_KERNEL; + DBG("Getting UST tracing events"); + + domain.type = LTTNG_DOMAIN_UST; handle = lttng_create_handle(NULL, &domain); if (handle == NULL) { - goto error; + ret = CMD_ERROR; + goto end; } size = lttng_list_tracepoints(handle, &event_list); if (size < 0) { - ERR("Unable to list kernel events"); - return size; + ERR("Unable to list UST events: %s", lttng_strerror(size)); + ret = CMD_ERROR; + goto error; } - MSG("Kernel events:\n-------------"); - - for (i = 0; i < size; i++) { - print_events(&event_list[i]); - } + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_agent_ust_events(event_list, size, &domain); + } else { + /* Pretty print */ + MSG("UST events:\n-------------"); - MSG(""); + if (size == 0) { + MSG("None"); + } - free(event_list); + for (i = 0; i < size; i++) { + if (cur_pid != event_list[i].pid) { + cur_pid = event_list[i].pid; + cmdline = get_cmdline_by_pid(cur_pid); + if (cmdline == NULL) { + ret = CMD_ERROR; + goto error; + } + MSG("\nPID: %d - Name: %s", cur_pid, cmdline); + free(cmdline); + } + print_events(&event_list[i]); + } - return CMD_SUCCESS; + MSG(""); + } error: - return -1; + free(event_list); +end: + lttng_destroy_handle(handle); + return ret; } /* - * List events of channel of session and domain. + * Machine interface + * List all ust event with their fields */ -static int list_events(const char *channel_name) +static int mi_list_ust_event_fields(struct lttng_event_field *fields, int count, + struct lttng_domain *domain) { - int ret, count, i; - struct lttng_event *events = NULL; + int ret, i; + pid_t cur_pid = 0; + char *cmdline = NULL; + int pid_element_open = 0; + int event_element_open = 0; + struct lttng_event cur_event; - count = lttng_list_events(handle, channel_name, &events); - if (count < 0) { - ret = count; - goto error; + /* Open domains element */ + ret = mi_lttng_domains_open(writer); + if (ret) { + goto end; } - MSG("\n%sEvents:", indent4); - if (count == 0) { - MSG("%sNone\n", indent6); + /* Write domain */ + ret = mi_lttng_domain(writer, domain, 1); + if (ret) { goto end; } - for (i = 0; i < count; i++) { - print_events(&events[i]); + /* Open pids element */ + ret = mi_lttng_pids_open(writer); + if (ret) { + goto end; } - MSG(""); + for (i = 0; i < count; i++) { + if (cur_pid != fields[i].event.pid) { + if (pid_element_open) { + if (event_element_open) { + + /* Close the previous field element and event. */ + ret = mi_lttng_close_multi_element(writer, 2); + if (ret) { + goto end; + } + event_element_open = 0; + } + /* Close the previous events, pid element */ + ret = mi_lttng_close_multi_element(writer, 2); + if (ret) { + goto end; + } + pid_element_open = 0; + } + + cur_pid = fields[i].event.pid; + cmdline = get_cmdline_by_pid(cur_pid); + if (!pid_element_open) { + /* Open and write a pid element */ + ret = mi_lttng_pid(writer, cur_pid, cmdline, 1); + if (ret) { + goto error; + } -end: - if (events) { - free(events); + /* Open events element */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto error; + } + pid_element_open = 1; + } + free(cmdline); + /* Wipe current event since we are about to print a new PID. */ + memset(&cur_event, 0, sizeof(cur_event)); + } + + if (strcmp(cur_event.name, fields[i].event.name) != 0) { + if (event_element_open) { + /* Close the previous fields element and the previous event */ + ret = mi_lttng_close_multi_element(writer, 2); + if (ret) { + goto end; + } + event_element_open = 0; + } + + memcpy(&cur_event, &fields[i].event, + sizeof(cur_event)); + + if (!event_element_open) { + /* Open and write the event */ + ret = mi_lttng_event(writer, &cur_event, 1, + handle->domain.type); + if (ret) { + goto end; + } + + /* Open a fields element */ + ret = mi_lttng_event_fields_open(writer); + if (ret) { + goto end; + } + event_element_open = 1; + } + } + + /* Print the event_field */ + ret = mi_lttng_event_field(writer, &fields[i]); + if (ret) { + goto end; + } } - ret = CMD_SUCCESS; + /* Close pids, domain, domains */ + ret = mi_lttng_close_multi_element(writer, 3); +end: + return ret; error: + free(cmdline); return ret; } /* - * Pretty print channel + * Ask session daemon for all user space tracepoint fields available. */ -static void print_channel(struct lttng_channel *channel) +static int list_ust_event_fields(void) { - MSG("- %s:%s\n", channel->name, enabled_string(channel->enabled)); + int i, size, ret = CMD_SUCCESS; + struct lttng_domain domain; + struct lttng_handle *handle; + struct lttng_event_field *event_field_list; + pid_t cur_pid = 0; + char *cmdline = NULL; - MSG("%sAttributes:", indent4); - MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite); - MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size); - MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf); - MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval); - MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval); - switch (channel->attr.output) { - case LTTNG_EVENT_SPLICE: - MSG("%soutput: splice()", indent6); - break; - case LTTNG_EVENT_MMAP: - MSG("%soutput: mmap()", indent6); - break; - } -} + struct lttng_event cur_event; -/* - * List channel(s) of session and domain. - * - * If channel_name is NULL, all channels are listed. - */ -static int list_channels(const char *channel_name) -{ - int count, i, ret = CMD_SUCCESS; - unsigned int chan_found = 0; - struct lttng_channel *channels = NULL; + memset(&domain, 0, sizeof(domain)); + memset(&cur_event, 0, sizeof(cur_event)); - DBG("Listing channel(s) (%s)", channel_name ? : ""); + DBG("Getting UST tracing event fields"); - count = lttng_list_channels(handle, &channels); - if (count < 0) { - ret = count; - goto error; - } else if (count == 0) { - MSG("No channel found"); + domain.type = LTTNG_DOMAIN_UST; + + handle = lttng_create_handle(NULL, &domain); + if (handle == NULL) { + ret = CMD_ERROR; goto end; } - if (channel_name == NULL) { - MSG("Channels:\n-------------"); + size = lttng_list_tracepoint_fields(handle, &event_field_list); + if (size < 0) { + ERR("Unable to list UST event fields: %s", lttng_strerror(size)); + ret = CMD_ERROR; + goto end; } - for (i = 0; i < count; i++) { - if (channel_name != NULL) { - if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) { - chan_found = 1; - } else { - continue; - } + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_ust_event_fields(event_field_list, size, &domain); + if (ret) { + ret = CMD_ERROR; + goto error; } - print_channel(&channels[i]); + } else { + /* Pretty print */ + MSG("UST events:\n-------------"); - /* Listing events per channel */ - ret = list_events(channels[i].name); - if (ret < 0) { - MSG("%s", lttng_strerror(ret)); + if (size == 0) { + MSG("None"); } - if (chan_found) { - break; + for (i = 0; i < size; i++) { + if (cur_pid != event_field_list[i].event.pid) { + cur_pid = event_field_list[i].event.pid; + cmdline = get_cmdline_by_pid(cur_pid); + if (cmdline == NULL) { + ret = CMD_ERROR; + goto error; + } + MSG("\nPID: %d - Name: %s", cur_pid, cmdline); + free(cmdline); + /* Wipe current event since we are about to print a new PID. */ + memset(&cur_event, 0, sizeof(cur_event)); + } + if (strcmp(cur_event.name, event_field_list[i].event.name) != 0) { + print_events(&event_field_list[i].event); + memcpy(&cur_event, &event_field_list[i].event, + sizeof(cur_event)); + } + print_event_field(&event_field_list[i]); } - } - if (!chan_found && channel_name != NULL) { - MSG("Channel %s not found", channel_name); + MSG(""); } -end: - free(channels); - ret = CMD_SUCCESS; - error: + free(event_field_list); +end: + lttng_destroy_handle(handle); return ret; } /* - * List available tracing session. List only basic information. - * - * If session_name is NULL, all sessions are listed. + * Machine interface + * Print a list of kernel events */ -static int list_sessions(const char *session_name) +static int mi_list_kernel_events(struct lttng_event *events, int count, + struct lttng_domain *domain) { - int ret, count, i; - unsigned int session_found = 0; - struct lttng_session *sessions; + int ret, i; - count = lttng_list_sessions(&sessions); - DBG("Session count %d", count); - if (count < 0) { - ret = count; + /* Open domains element */ + ret = mi_lttng_domains_open(writer); + if (ret) { + goto end; + } + + /* Write domain */ + ret = mi_lttng_domain(writer, domain, 1); + if (ret) { + goto end; + } + + /* Open events */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto end; + } + + for (i = 0; i < count; i++) { + ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type); + if (ret) { + goto end; + } + } + + /* close events, domain and domains */ + ret = mi_lttng_close_multi_element(writer, 3); + if (ret) { + goto end; + } + +end: + return ret; +} + +/* + * Ask for all trace events in the kernel + */ +static int list_kernel_events(void) +{ + int i, size, ret = CMD_SUCCESS; + struct lttng_domain domain; + struct lttng_handle *handle; + struct lttng_event *event_list; + + memset(&domain, 0, sizeof(domain)); + + DBG("Getting kernel tracing events"); + + domain.type = LTTNG_DOMAIN_KERNEL; + + handle = lttng_create_handle(NULL, &domain); + if (handle == NULL) { + ret = CMD_ERROR; goto error; } - if (session_name == NULL) { - MSG("Available tracing sessions:"); + size = lttng_list_tracepoints(handle, &event_list); + if (size < 0) { + ERR("Unable to list kernel events: %s", lttng_strerror(size)); + lttng_destroy_handle(handle); + return CMD_ERROR; + } + + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_kernel_events(event_list, size, &domain); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } else { + MSG("Kernel events:\n-------------"); + + for (i = 0; i < size; i++) { + print_events(&event_list[i]); + } + + MSG(""); + } + +end: + free(event_list); + + lttng_destroy_handle(handle); + return ret; + +error: + lttng_destroy_handle(handle); + return ret; +} + +/* + * Machine interface + * Print a list of system calls. + */ +static int mi_list_syscalls(struct lttng_event *events, int count) +{ + int ret, i; + + /* Open events */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto end; } for (i = 0; i < count; i++) { - if (session_name != NULL) { - if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { - session_found = 1; - MSG("Tracing session %s:%s", session_name, active_string(sessions[i].enabled)); - MSG("%sTrace path: %s\n", indent4, sessions[i].path); - break; + ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type); + if (ret) { + goto end; + } + } + + /* Close events. */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto end; + } + +end: + return ret; +} + +/* + * Ask for kernel system calls. + */ +static int list_syscalls(void) +{ + int i, size, ret = CMD_SUCCESS; + struct lttng_event *event_list; + + DBG("Getting kernel system call events"); + + size = lttng_list_syscalls(&event_list); + if (size < 0) { + ERR("Unable to list system calls: %s", lttng_strerror(size)); + ret = CMD_ERROR; + goto error; + } + + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_syscalls(event_list, size); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } else { + MSG("System calls:\n-------------"); + + for (i = 0; i < size; i++) { + print_events(&event_list[i]); + } + + MSG(""); + } + +end: + free(event_list); + return ret; + +error: + return ret; +} + +/* + * Machine Interface + * Print a list of agent events + */ +static int mi_list_session_agent_events(struct lttng_event *events, int count) +{ + int ret, i; + + /* Open events element */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto end; + } + + for (i = 0; i < count; i++) { + ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type); + if (ret) { + goto end; + } + } + + /* Close events element */ + ret = mi_lttng_writer_close_element(writer); + +end: + return ret; +} + +/* + * List agent events for a specific session using the handle. + * + * Return CMD_SUCCESS on success else a negative value. + */ +static int list_session_agent_events(void) +{ + int ret = CMD_SUCCESS, count, i; + struct lttng_event *events = NULL; + + count = lttng_list_events(handle, "", &events); + if (count < 0) { + ret = CMD_ERROR; + ERR("%s", lttng_strerror(count)); + goto error; + } + + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_session_agent_events(events, count); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } else { + /* Pretty print */ + MSG("Events (Logger name):\n---------------------"); + if (count == 0) { + MSG("%sNone\n", indent6); + goto end; + } + + for (i = 0; i < count; i++) { + MSG("%s- %s%s (loglevel%s %s)", indent4, events[i].name, + enabled_string(events[i].enabled), + logleveltype_string(events[i].loglevel_type), + mi_lttng_loglevel_string(events[i].loglevel, + handle->domain.type)); + } + + MSG(""); + } + +end: + free(events); +error: + return ret; +} + +/* + * Machine interface + * print a list of event + */ +static int mi_list_events(struct lttng_event *events, int count) +{ + int ret, i; + + /* Open events element */ + ret = mi_lttng_events_open(writer); + if (ret) { + goto end; + } + + for (i = 0; i < count; i++) { + ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type); + if (ret) { + goto end; + } + } + + /* Close events element */ + ret = mi_lttng_writer_close_element(writer); + +end: + return ret; +} + +/* + * List events of channel of session and domain. + */ +static int list_events(const char *channel_name) +{ + int ret = CMD_SUCCESS, count, i; + struct lttng_event *events = NULL; + + count = lttng_list_events(handle, channel_name, &events); + if (count < 0) { + ret = CMD_ERROR; + ERR("%s", lttng_strerror(count)); + goto error; + } + + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_events(events, count); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } else { + /* Pretty print */ + MSG("\n%sEvents:", indent4); + if (count == 0) { + MSG("%sNone\n", indent6); + goto end; + } + + for (i = 0; i < count; i++) { + print_events(&events[i]); + } + + MSG(""); + } +end: + free(events); +error: + return ret; +} + +/* + * Pretty print channel + */ +static void print_channel(struct lttng_channel *channel) +{ + MSG("- %s:%s\n", channel->name, enabled_string(channel->enabled)); + + MSG("%sAttributes:", indent4); + MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite); + MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size); + MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf); + MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval); + MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval); + MSG("%strace file count: %" PRIu64, indent6, channel->attr.tracefile_count); + MSG("%strace file size (bytes): %" PRIu64, indent6, channel->attr.tracefile_size); + switch (channel->attr.output) { + case LTTNG_EVENT_SPLICE: + MSG("%soutput: splice()", indent6); + break; + case LTTNG_EVENT_MMAP: + MSG("%soutput: mmap()", indent6); + break; + } +} + +/* + * Machine interface + * Print a list of channel + * + */ +static int mi_list_channels(struct lttng_channel *channels, int count, + const char *channel_name) +{ + int i, ret; + unsigned int chan_found = 0; + + /* Open channels element */ + ret = mi_lttng_channels_open(writer); + if (ret) { + goto error; + } + + for (i = 0; i < count; i++) { + if (channel_name != NULL) { + if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) { + chan_found = 1; + } else { + continue; } - continue; } - MSG(" %d) %s (%s)%s", i + 1, sessions[i].name, sessions[i].path, active_string(sessions[i].enabled)); + /* Write channel element and leave it open */ + ret = mi_lttng_channel(writer, &channels[i], 1); + if (ret) { + goto error; + } + + /* Listing events per channel */ + ret = list_events(channels[i].name); + if (ret) { + goto error; + } + + /* Closing the channel element we opened earlier */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto error; + } - if (session_found) { + if (chan_found) { break; } } - free(sessions); + /* Close channels element */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto error; + } + +error: + return ret; +} + +/* + * List channel(s) of session and domain. + * + * If channel_name is NULL, all channels are listed. + */ +static int list_channels(const char *channel_name) +{ + int count, i, ret = CMD_SUCCESS; + unsigned int chan_found = 0; + struct lttng_channel *channels = NULL; + + DBG("Listing channel(s) (%s)", channel_name ? : ""); + + count = lttng_list_channels(handle, &channels); + if (count < 0) { + switch (-count) { + case LTTNG_ERR_KERN_CHAN_NOT_FOUND: + if (lttng_opt_mi) { + /* When printing mi this is not an error + * but an empty channels element */ + count = 0; + } else { + ret = CMD_SUCCESS; + WARN("No kernel channel"); + goto error_channels; + } + break; + default: + /* We had a real error */ + ret = CMD_ERROR; + ERR("%s", lttng_strerror(count)); + goto error_channels; + break; + } + } + + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_list_channels(channels, count, channel_name); + if (ret) { + ret = CMD_ERROR; + goto error; + } + } else { + /* Pretty print */ + if (count) { + MSG("Channels:\n-------------"); + } + + for (i = 0; i < count; i++) { + if (channel_name != NULL) { + if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) { + chan_found = 1; + } else { + continue; + } + } + print_channel(&channels[i]); + + /* Listing events per channel */ + ret = list_events(channels[i].name); + if (ret) { + goto error; + } + + if (chan_found) { + break; + } + } + + if (!chan_found && channel_name != NULL) { + ret = CMD_ERROR; + ERR("Channel %s not found", channel_name); + goto error; + } + } +error: + free(channels); + +error_channels: + return ret; +} + +/* + * List tracker PID(s) of session and domain. + */ +static int list_tracker_pids(void) +{ + int enabled, ret; + int *pids = NULL; + size_t nr_pids; + + ret = lttng_list_tracker_pids(handle, + &enabled, &pids, &nr_pids); + if (ret) { + return ret; + } + if (enabled) { + int i; + _MSG("PID tracker: ["); - if (!session_found && session_name != NULL) { - MSG("Session %s not found", session_name); + for (i = 0; i < nr_pids; i++) { + if (i) { + _MSG(","); + } + _MSG(" %d", pids[i]); + } + _MSG(" ]\n\n"); } + free(pids); + return 0; +} + +/* + * Machine interface + * Find the session with session_name as name + * and print his informations. + */ +static int mi_list_session(const char *session_name, + struct lttng_session *sessions, int count) +{ + int ret, i; + unsigned int session_found = 0; if (session_name == NULL) { - MSG("\nUse lttng list for more details"); + ret = -LTTNG_ERR_SESS_NOT_FOUND; + goto end; + } + + for (i = 0; i < count; i++) { + if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { + /* We need to leave it open to append other informations + * like domain, channel, events etc.*/ + session_found = 1; + ret = mi_lttng_session(writer, &sessions[i], 1); + if (ret) { + goto end; + } + break; + } + } + + if (!session_found) { + ERR("Session '%s' not found", session_name); + ret = -LTTNG_ERR_SESS_NOT_FOUND; + goto end; + } + +end: + return ret; +} + +/* + * Machine interface + * List all availables session + */ +static int mi_list_sessions(struct lttng_session *sessions, int count) +{ + int ret, i; + + /* Opening sessions element */ + ret = mi_lttng_sessions_open(writer); + if (ret) { + goto end; + } + + /* Listing sessions */ + for (i = 0; i < count; i++) { + ret = mi_lttng_session(writer, &sessions[i], 0); + if (ret) { + goto end; + } + } + + /* Closing sessions element */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto end; + } + +end: + return ret; +} + +/* + * List available tracing session. List only basic information. + * + * If session_name is NULL, all sessions are listed. + */ +static int list_sessions(const char *session_name) +{ + int ret = CMD_SUCCESS; + int count, i; + unsigned int session_found = 0; + struct lttng_session *sessions; + + count = lttng_list_sessions(&sessions); + DBG("Session count %d", count); + if (count < 0) { + ret = CMD_ERROR; + ERR("%s", lttng_strerror(count)); + goto end; } - return CMD_SUCCESS; + if (lttng_opt_mi) { + /* Mi */ + if (session_name == NULL) { + /* List all session */ + ret = mi_list_sessions(sessions, count); + } else { + /* Note : this return an open session element */ + ret = mi_list_session(session_name, sessions, count); + } + if (ret) { + ret = CMD_ERROR; + goto error; + } + } else { + /* Pretty print */ + if (count == 0) { + MSG("Currently no available tracing session"); + goto end; + } + + if (session_name == NULL) { + MSG("Available tracing sessions:"); + } + + + for (i = 0; i < count; i++) { + if (session_name != NULL) { + if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { + session_found = 1; + MSG("Tracing session %s: [%s%s]", session_name, + active_string(sessions[i].enabled), + snapshot_string(sessions[i].snapshot_mode)); + MSG("%sTrace path: %s\n", indent4, sessions[i].path); + break; + } + } else { + MSG(" %d) %s (%s) [%s%s]", i + 1, + sessions[i].name, sessions[i].path, + active_string(sessions[i].enabled), + snapshot_string(sessions[i].snapshot_mode)); + MSG("%sTrace path: %s", indent4, sessions[i].path); + if (sessions[i].live_timer_interval != 0) { + MSG("%sLive timer interval (usec): %u", indent4, + sessions[i].live_timer_interval); + } + MSG(""); + } + } + + if (!session_found && session_name != NULL) { + ERR("Session '%s' not found", session_name); + ret = CMD_ERROR; + goto error; + } + + if (session_name == NULL) { + MSG("\nUse lttng list for more details"); + } + } error: + free(sessions); +end: + return ret; +} + + +/* + * Machine Interface + * list available domain(s) for a session. + */ +static int mi_list_domains(struct lttng_domain *domains, int count) +{ + int i, ret; + /* Open domains element */ + ret = mi_lttng_domains_open(writer); + if (ret) { + goto end; + } + + for (i = 0; i < count; i++) { + ret = mi_lttng_domain(writer, &domains[i] , 0); + if (ret) { + goto end; + } + } + + /* Closing domains element */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + goto end; + } +end: return ret; } @@ -487,34 +1457,56 @@ static int list_domains(const char *session_name) int i, count, ret = CMD_SUCCESS; struct lttng_domain *domains = NULL; - MSG("Domains:\n-------------"); count = lttng_list_domains(session_name, &domains); if (count < 0) { - ret = count; - goto error; - } else if (count == 0) { - MSG(" None"); + ret = CMD_ERROR; + ERR("%s", lttng_strerror(count)); goto end; } - for (i = 0; i < count; i++) { - switch (domains[i].type) { - case LTTNG_DOMAIN_KERNEL: - MSG(" - Kernel"); - break; - case LTTNG_DOMAIN_UST: - MSG(" - UST global"); - break; - default: - break; + if (lttng_opt_mi) { + /* Mi output */ + ret = mi_list_domains(domains, count); + if (ret) { + ret = CMD_ERROR; + goto error; + } + } else { + /* Pretty print */ + MSG("Domains:\n-------------"); + if (count == 0) { + MSG(" None"); + goto end; + } + + for (i = 0; i < count; i++) { + switch (domains[i].type) { + case LTTNG_DOMAIN_KERNEL: + MSG(" - Kernel"); + break; + case LTTNG_DOMAIN_UST: + MSG(" - UST global"); + break; + case LTTNG_DOMAIN_JUL: + MSG(" - JUL (Java Util Logging)"); + break; + case LTTNG_DOMAIN_LOG4J: + MSG(" - LOG4j (Logging for Java)"); + break; + case LTTNG_DOMAIN_PYTHON: + MSG(" - Python (logging)"); + break; + default: + break; + } } } -end: +error: free(domains); -error: +end: return ret; } @@ -523,15 +1515,17 @@ error: */ int cmd_list(int argc, const char **argv) { - int opt, i, ret = CMD_SUCCESS; - int nb_domain; + int opt, ret = CMD_SUCCESS; const char *session_name; static poptContext pc; struct lttng_domain domain; struct lttng_domain *domains = NULL; + memset(&domain, 0, sizeof(domain)); + if (argc < 1) { usage(stderr); + ret = CMD_ERROR; goto end; } @@ -541,11 +1535,14 @@ int cmd_list(int argc, const char **argv) while ((opt = poptGetNextOpt(pc)) != -1) { switch (opt) { case OPT_HELP: - usage(stderr); + usage(stdout); goto end; case OPT_USERSPACE: opt_userspace = 1; break; + case OPT_LIST_OPTIONS: + list_cmd_options(stdout, long_options); + goto end; default: usage(stderr); ret = CMD_UNDEFINED; @@ -553,8 +1550,29 @@ int cmd_list(int argc, const char **argv) } } - if (opt_pid != 0) { - MSG("*** Userspace tracing not implemented for PID ***\n"); + /* Mi check */ + if (lttng_opt_mi) { + writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); + if (!writer) { + ret = CMD_ERROR; + goto end; + } + + /* Open command element */ + ret = mi_lttng_writer_command_open(writer, + mi_lttng_element_command_list); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Open output element */ + ret = mi_lttng_writer_open_element(writer, + mi_lttng_element_command_output); + if (ret) { + ret = CMD_ERROR; + goto end; + } } /* Get session name (trailing argument) */ @@ -566,36 +1584,79 @@ int cmd_list(int argc, const char **argv) } else if (opt_userspace) { DBG2("Listing userspace global domain"); domain.type = LTTNG_DOMAIN_UST; + } else if (opt_jul) { + DBG2("Listing JUL domain"); + domain.type = LTTNG_DOMAIN_JUL; + } else if (opt_log4j) { + domain.type = LTTNG_DOMAIN_LOG4J; + } else if (opt_python) { + domain.type = LTTNG_DOMAIN_PYTHON; } - handle = lttng_create_handle(session_name, &domain); - if (handle == NULL) { + if (!opt_kernel && opt_syscall) { + WARN("--syscall will only work with the Kernel domain (-k)"); + ret = CMD_ERROR; goto end; } + if (opt_kernel || opt_userspace || opt_jul || opt_log4j || opt_python) { + handle = lttng_create_handle(session_name, &domain); + if (handle == NULL) { + ret = CMD_FATAL; + goto end; + } + } + if (session_name == NULL) { - if (!opt_kernel && !opt_userspace) { + if (!opt_kernel && !opt_userspace && !opt_jul && !opt_log4j + && !opt_python) { ret = list_sessions(NULL); - if (ret < 0) { + if (ret) { goto end; } } if (opt_kernel) { - ret = list_kernel_events(); - if (ret < 0) { - goto end; + if (opt_syscall) { + ret = list_syscalls(); + if (ret) { + goto end; + } + } else { + ret = list_kernel_events(); + if (ret) { + goto end; + } } } if (opt_userspace) { - ret = list_ust_events(); - if (ret < 0) { + if (opt_fields) { + ret = list_ust_event_fields(); + } else { + ret = list_ust_events(); + } + if (ret) { + goto end; + } + } + if (opt_jul || opt_log4j || opt_python) { + ret = list_agent_events(); + if (ret) { goto end; } } } else { /* List session attributes */ + if (lttng_opt_mi) { + /* Open element sessions + * Present for xml consistency */ + ret = mi_lttng_sessions_open(writer); + if (ret) { + goto end; + } + } + /* MI: the ouptut of list_sessions is an unclosed session element */ ret = list_sessions(session_name); - if (ret < 0) { + if (ret) { goto end; } @@ -605,20 +1666,64 @@ int cmd_list(int argc, const char **argv) goto end; } - if (opt_kernel) { - /* Channel listing */ + /* Channel listing */ + if (opt_kernel || opt_userspace) { + if (lttng_opt_mi) { + /* Add of domains and domain element for xml + * consistency and validation + */ + ret = mi_lttng_domains_open(writer); + if (ret) { + goto end; + } + + /* Open domain and leave it open for + * nested channels printing */ + ret = mi_lttng_domain(writer, &domain, 1); + if (ret) { + goto end; + } + + } + + ret = list_tracker_pids(); + if (ret) { + goto end; + } + ret = list_channels(opt_channel); - if (ret < 0) { + if (ret) { + goto end; + } + + if (lttng_opt_mi) { + /* Close domain and domain element */ + ret = mi_lttng_close_multi_element(writer, 2); + } + if (ret) { goto end; } + + } else { + int i, nb_domain; + /* We want all domain(s) */ nb_domain = lttng_list_domains(session_name, &domains); if (nb_domain < 0) { - ret = nb_domain; + ret = CMD_ERROR; + ERR("%s", lttng_strerror(nb_domain)); goto end; } + if (lttng_opt_mi) { + ret = mi_lttng_domains_open(writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } + for (i = 0; i < nb_domain; i++) { switch (domains[i].type) { case LTTNG_DOMAIN_KERNEL: @@ -626,33 +1731,119 @@ int cmd_list(int argc, const char **argv) break; case LTTNG_DOMAIN_UST: MSG("=== Domain: UST global ===\n"); + MSG("Buffer type: %s\n", + domains[i].buf_type == + LTTNG_BUFFER_PER_PID ? "per PID" : "per UID"); + break; + case LTTNG_DOMAIN_JUL: + MSG("=== Domain: JUL (Java Util Logging) ===\n"); + break; + case LTTNG_DOMAIN_LOG4J: + MSG("=== Domain: LOG4j (Logging for Java) ===\n"); + break; + case LTTNG_DOMAIN_PYTHON: + MSG("=== Domain: Python (logging) ===\n"); break; default: MSG("=== Domain: Unimplemented ===\n"); break; } + if (lttng_opt_mi) { + ret = mi_lttng_domain(writer, &domains[i], 1); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } + /* Clean handle before creating a new one */ - lttng_destroy_handle(handle); + if (handle) { + lttng_destroy_handle(handle); + } handle = lttng_create_handle(session_name, &domains[i]); if (handle == NULL) { + ret = CMD_FATAL; goto end; } + if (domains[i].type == LTTNG_DOMAIN_JUL || + domains[i].type == LTTNG_DOMAIN_LOG4J || + domains[i].type == LTTNG_DOMAIN_PYTHON) { + ret = list_session_agent_events(); + if (ret) { + goto end; + } + continue; + } + + switch (domains[i].type) { + case LTTNG_DOMAIN_KERNEL: + case LTTNG_DOMAIN_UST: + ret = list_tracker_pids(); + if (ret) { + goto end; + } + break; + default: + break; + } + ret = list_channels(opt_channel); - if (ret < 0) { + if (ret) { + goto end; + } + + if (lttng_opt_mi) { + /* Close domain element */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } + + } + if (lttng_opt_mi) { + /* Close the domains, session and sessions element */ + ret = mi_lttng_close_multi_element(writer, 3); + if (ret) { + ret = CMD_ERROR; goto end; } } } } + /* Mi closing */ + if (lttng_opt_mi) { + /* Close output element */ + ret = mi_lttng_writer_close_element(writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Command element close */ + ret = mi_lttng_writer_command_close(writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } + } end: - if (domains) { - free(domains); + /* Mi clean-up */ + if (writer && mi_lttng_writer_destroy(writer)) { + /* Preserve original error code */ + ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; + } + + free(domains); + if (handle) { + lttng_destroy_handle(handle); } - lttng_destroy_handle(handle); + poptFreeContext(pc); return ret; }