+/* Copyright (C) 2009 Pierre-Marc Fournier
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <stdlib.h>
-#include <stdio.h>
#include <fcntl.h>
+#include <regex.h>
#include "ustcomm.h"
+#include "ustcmd.h"
+
+enum command {
+ START_TRACE,
+ STOP_TRACE,
+ START,
+ DESTROY,
+ LIST_MARKERS,
+ ENABLE_MARKER,
+ DISABLE_MARKER,
+ GET_ONLINE_PIDS,
+ UNKNOWN
+};
struct ust_opts {
- char *cmd;
+ enum command cmd;
pid_t *pids;
- int take_reply;
+ char* regex;
+ regex_t preg;
+ int regex_state;
};
+char *progname = NULL;
+
+void usage(void)
+{
+ fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname);
+ fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
+\n\
+Commands:\n\
+ --start-trace\t\t\tStart tracing\n\
+ --stop-trace\t\t\tStop tracing\n\
+ --destroy-trace\t\t\tDestroy the trace\n\
+ --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
+ --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
+ --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\
+\
+");
+}
+
int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
{
int c;
- int digit_optind = 0;
- opts->cmd = NULL;
opts->pids = NULL;
- opts->take_reply = 0;
+ opts->regex = NULL;
+ opts->regex_state = -1;
while (1) {
- int this_option_optind = optind ? optind : 1;
int option_index = 0;
static struct option long_options[] = {
{"start-trace", 0, 0, 1000},
{"enable-marker", 1, 0, 1007},
{"disable-marker", 1, 0, 1008},
{"start", 0, 0, 1009},
+ {"help", 0, 0, 'h'},
+ {"version", 0, 0, 1010},
+ {"online-pids", 0, 0, 1011},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "", long_options, &option_index);
+ c = getopt_long(argc, argv, "h", long_options, &option_index);
if (c == -1)
break;
break;
case 1000:
- opts->cmd = strdup("trace_start");
+ opts->cmd = START_TRACE;
break;
case 1001:
- opts->cmd = strdup("trace_stop");
+ opts->cmd = STOP_TRACE;
break;
case 1009:
- opts->cmd = strdup("start");
+ opts->cmd = START;
break;
case 1002:
- opts->cmd = strdup("trace_destroy");
+ opts->cmd = DESTROY;
break;
case 1004:
- opts->cmd = strdup("list_markers");
- opts->take_reply = 1;
+ opts->cmd = LIST_MARKERS;
break;
case 1007:
- asprintf(&opts->cmd, "enable_marker %s", optarg);
+ opts->cmd = ENABLE_MARKER;
+ opts->regex = strdup(optarg);
break;
case 1008:
- asprintf(&opts->cmd, "disable_marker %s", optarg);
+ opts->cmd = DISABLE_MARKER;
+ opts->regex = strdup(optarg);
+ break;
+ case 1011:
+ opts->cmd = GET_ONLINE_PIDS;
break;
+ case 'h':
+ usage();
+ exit(0);
+ case 1010:
+ printf("Version 0.1\n");
default:
- /* unknown option or other error; error is printed by getopt, just return */
+ /* unknown option or other error; error is
+ printed by getopt, just return */
+ opts->cmd = UNKNOWN;
return 1;
}
}
- if(argc - optind > 0) {
+ if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
int i;
int pididx=0;
opts->pids = malloc((argc-optind+1) * sizeof(pid_t));
opts->pids[pididx] = -1;
}
+ if (opts->cmd == ENABLE_MARKER || opts->cmd == DISABLE_MARKER) {
+ if (opts->regex_state = regcomp(&opts->preg, opts->regex, 0)) {
+ fprintf(stderr, "Invalid regular expression.\n");
+ }
+ }
+
return 0;
}
-char *progname = NULL;
+static void regex_change_m_state(struct ust_opts* opts, pid_t pid) {
+ struct USTcmd_cmsf* cmsf = NULL;
+ unsigned int i = 0;
+ int e = (opts->cmd == ENABLE_MARKER);
-void usage(void)
-{
- fprintf(stderr, "usage: %s [OPTIONS] OPERATION PID...\n", progname);
- fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
-\n\
-Operations:\n\
-\t--start-trace\tStart tracing\n\
-\t--stop-trace\tStop tracing\n\
-\t--destroy-trace\tDestroy the trace\n\
-\t--enable-marker CHANNEL_NAME/MARKER_NAME\tEnable a marker\n\
-\t--disable-marker CHANNEL_NAME/MARKER_NAME\tDisable a marker\n\
-\t--list-markers\tList the markers of the process and their state\n\
-\n\
-");
+ if (opts->regex_state != 0) {
+ return;
+ }
+
+ if (ustcmd_get_cmsf(&cmsf, pid)) {
+ fprintf(stderr, "error while trying to get markers for PID "
+ "%u\n", (unsigned int) pid);
+ return;
+ }
+ while (cmsf[i].channel != NULL) {
+ char* mc;
+ asprintf(&mc, "%s/%s", cmsf[i].channel, cmsf[i].marker);
+ if (regexec(&opts->preg, mc, 0, NULL, 0) == 0) {
+ /* We got a match! */
+ if (ustcmd_set_marker_state(mc,
+ e ? USTCMD_MS_ON : USTCMD_MS_OFF, pid)) {
+ fprintf(stderr,
+ "error while trying to %sable marker"
+ "\"%s\" for PID %u\n",
+ e ? "en" : "dis", mc,
+ (unsigned int) pid);
+ } else {
+ printf("sucessfully %sabled marker "
+ "\"%s\" for PID %u\n",
+ e ? "en" : "dis", mc,
+ (unsigned int) pid);
+ }
+ }
+ free(mc);
+ ++i;
+ }
+ ustcmd_free_cmsf(cmsf);
}
int main(int argc, char *argv[])
{
pid_t *pidit;
- //char *msg = argv[2];
struct ustcomm_connection conn;
int result;
struct ust_opts opts;
exit(EXIT_FAILURE);
}
- if(opts.pids == NULL) {
+ if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) {
fprintf(stderr, "No pid specified.\n");
usage();
exit(EXIT_FAILURE);
}
- if(opts.cmd == NULL) {
+ if(opts.cmd == UNKNOWN) {
fprintf(stderr, "No command specified.\n");
usage();
exit(EXIT_FAILURE);
}
+ if (opts.cmd == GET_ONLINE_PIDS) {
+ pid_t* pp = ustcmd_get_online_pids();
+ unsigned int i = 0;
+
+ if (pp) {
+ while (pp[i] != 0) {
+ printf("%u\n", (unsigned int) pp[i]);
+ ++i;
+ }
+ free(pp);
+ }
+
+ exit(EXIT_SUCCESS);
+ }
pidit = opts.pids;
+ struct USTcmd_cmsf* cmsf = NULL;
while(*pidit != -1) {
- char *reply;
- char **preply;
-
- if(opts.take_reply)
- preply = &reply;
- else
- preply = NULL;
-
- result = ustcomm_connect_app(*pidit, &conn);
- if(result) {
- fprintf(stderr, "error connecting to process\n");
- exit(EXIT_FAILURE);
+ switch (opts.cmd) {
+ case START_TRACE:
+ if (ustcmd_start_trace(*pidit)) {
+ fprintf(stderr,
+ "error while trying to for trace "
+ "with PID %u\n", (unsigned int) *pidit);
+ break;
+ }
+ printf("sucessfully started trace for PID %u\n",
+ (unsigned int) *pidit);
+ break;
+
+ case STOP_TRACE:
+ if (ustcmd_stop_trace(*pidit)) {
+ fprintf(stderr,
+ "error while trying to stop trace "
+ "for PID %u\n", (unsigned int) *pidit);
+ break;
+ }
+ printf("sucessfully stopped trace for PID %u\n",
+ (unsigned int) *pidit);
+ break;
+
+ case START:
+ if (ustcmd_setup_and_start(*pidit)) {
+ fprintf(stderr,
+ "error while trying to setup/start "
+ "trace for PID %u\n",
+ (unsigned int) *pidit);
+ break;
+ }
+ printf("sucessfully setup/started trace for PID %u\n",
+ (unsigned int) *pidit);
+ break;
+
+ case DESTROY:
+ if (ustcmd_destroy_trace(*pidit)) {
+ fprintf(stderr,
+ "error while trying to destroy "
+ "trace with PID %u\n",
+ (unsigned int) *pidit);
+ break;
+ }
+ printf("sucessfully destroyed trace for PID %u\n",
+ (unsigned int) *pidit);
+ break;
+
+ case LIST_MARKERS:
+ cmsf = NULL;
+ if (ustcmd_get_cmsf(&cmsf, *pidit)) {
+ fprintf(stderr,
+ "error while trying to list markers for"
+ " PID %u\n", (unsigned int) *pidit);
+ break;
+ }
+ unsigned int i = 0;
+ while (cmsf[i].channel != NULL) {
+ printf("{PID: %u, channel/marker: %s/%s, "
+ "state: %u, fs: %s}\n",
+ (unsigned int) *pidit,
+ cmsf[i].channel,
+ cmsf[i].marker,
+ cmsf[i].state,
+ cmsf[i].fs);
+ ++i;
+ }
+ ustcmd_free_cmsf(cmsf);
+ break;
+
+ case ENABLE_MARKER:
+ case DISABLE_MARKER:
+ regex_change_m_state(&opts, *pidit);
+ break;
+
+ default:
+ fprintf(stderr, "error: unknown command...\n");
+ break;
}
- ustcomm_send_request(&conn, opts.cmd, preply);
- if(opts.take_reply)
- printf("%s", reply);
pidit++;
}
- free(opts.pids);
- free(opts.cmd);
+ exit_free:
+ if (opts.pids != NULL) {
+ free(opts.pids);
+ }
+ if (opts.regex != NULL) {
+ free(opts.regex);
+ }
return 0;
}
+
projects / ust.git / blobdiff