+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _LGPL_SOURCE
-#include <popt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <ctype.h>
-#include <assert.h>
-
-#include <common/mi-lttng.h>
-
-#include "../command.h"
-
-static int opt_event_type;
-static int opt_kernel;
-static int opt_userspace;
-
-enum {
- OPT_HELP = 1,
- OPT_TRACEPOINT,
- OPT_MARKER,
- OPT_PROBE,
- OPT_FUNCTION,
- OPT_FUNCTION_ENTRY,
- OPT_SYSCALL,
- OPT_USERSPACE,
- OPT_KERNEL,
- 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_NONE, 0, OPT_KERNEL, 0, 0},
- {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
- {"function", 0, POPT_ARG_NONE, 0, OPT_FUNCTION, 0, 0},
- {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
- {0, 0, 0, 0, 0, 0, 0}
-};
-
-/*
- * Calibrate LTTng.
- *
- * Returns a CMD_* error.
- */
-static int calibrate_lttng(void)
-{
- int ret = CMD_SUCCESS;
- struct lttng_domain dom;
- struct lttng_calibrate calibrate;
-
- memset(&dom, 0, sizeof(dom));
- memset(&calibrate, 0, sizeof(calibrate));
-
- /* Create lttng domain */
- if (opt_kernel) {
- dom.type = LTTNG_DOMAIN_KERNEL;
- } else if (opt_userspace) {
- dom.type = LTTNG_DOMAIN_UST;
- } else {
- /* Checked by the caller. */
- assert(0);
- }
-
- handle = lttng_create_handle(NULL, &dom);
- if (handle == NULL) {
- ret = CMD_ERROR;
- goto error;
- }
-
- switch (opt_event_type) {
- case LTTNG_EVENT_TRACEPOINT:
- DBG("Calibrating kernel tracepoints");
- break;
- case LTTNG_EVENT_PROBE:
- DBG("Calibrating kernel probes");
- break;
- case LTTNG_EVENT_FUNCTION:
- DBG("Calibrating kernel functions");
- calibrate.type = LTTNG_CALIBRATE_FUNCTION;
- ret = lttng_calibrate(handle, &calibrate);
- if (ret < 0) {
- ERR("%s", lttng_strerror(ret));
- goto error;
- }
- MSG("%s calibration done", opt_kernel ? "Kernel" : "UST");
- break;
- case LTTNG_EVENT_FUNCTION_ENTRY:
- DBG("Calibrating kernel function entry");
- break;
- case LTTNG_EVENT_SYSCALL:
- DBG("Calibrating kernel syscall");
- break;
- default:
- ret = CMD_UNDEFINED;
- goto error;
- }
-
- if (lttng_opt_mi) {
- assert(writer);
- ret = mi_lttng_calibrate(writer, &calibrate);
- if (ret) {
- ret = CMD_ERROR;
- goto error;
- }
- }
-
-error:
- lttng_destroy_handle(handle);
-
- return ret;
-}
-
-/*
- * Calibrate LTTng tracer.
- *
- * Returns a CMD_* error.
- */
-int cmd_calibrate(int argc, const char **argv)
-{
- int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
- static poptContext pc;
-
- pc = poptGetContext(NULL, argc, argv, long_options, 0);
- poptReadDefaultConfig(pc, 0);
-
- /* Default event type */
- opt_event_type = LTTNG_EVENT_FUNCTION;
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- SHOW_HELP();
- goto end;
- case OPT_TRACEPOINT:
- ret = CMD_UNDEFINED;
- goto end;
- case OPT_MARKER:
- ret = CMD_UNDEFINED;
- goto end;
- case OPT_PROBE:
- ret = CMD_UNDEFINED;
- break;
- case OPT_FUNCTION:
- opt_event_type = LTTNG_EVENT_FUNCTION;
- break;
- case OPT_FUNCTION_ENTRY:
- ret = CMD_UNDEFINED;
- goto end;
- case OPT_SYSCALL:
- ret = CMD_UNDEFINED;
- goto end;
- case OPT_USERSPACE:
- opt_userspace = 1;
- break;
- case OPT_KERNEL:
- opt_kernel = 1;
- break;
- case OPT_LIST_OPTIONS:
- list_cmd_options(stdout, long_options);
- goto end;
- default:
- ret = CMD_UNDEFINED;
- goto end;
- }
- }
-
- ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Mi check */
- if (lttng_opt_mi) {
- writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
- if (!writer) {
- ret = -LTTNG_ERR_NOMEM;
- goto end;
- }
-
- /* Open command element */
- ret = mi_lttng_writer_command_open(writer,
- mi_lttng_element_command_calibrate);
- 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;
- }
- }
-
- command_ret = calibrate_lttng();
- if (command_ret) {
- success = 0;
- }
-
- /* Mi closing */
- if (lttng_opt_mi) {
- /* Close output element */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Success ? */
- ret = mi_lttng_writer_write_element_bool(writer,
- mi_lttng_element_command_success, success);
- 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:
- /* Mi clean-up */
- if (writer && mi_lttng_writer_destroy(writer)) {
- /* Preserve original error code */
- ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL;
- }
-
- /* Overwrite ret if an error occurred during calibrate_lttng() */
- ret = command_ret ? command_ret : ret;
-
- poptFreeContext(pc);
- return ret;
-}
projects / lttng-tools.git / blobdiff