X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fcalibrate.c;h=b15ce40cf924c6992d14a9c1221f0f73540c2525;hp=547b349e4dbb713d67f6862d61debb74a4e57de8;hb=890d8fe47755c3bad936389cf48ffa141cff41c9;hpb=ca1c3607d2f5654163875cda874f43971df0f696 diff --git a/src/bin/lttng/commands/calibrate.c b/src/bin/lttng/commands/calibrate.c index 547b349e4..b15ce40cf 100644 --- a/src/bin/lttng/commands/calibrate.c +++ b/src/bin/lttng/commands/calibrate.c @@ -2,22 +2,21 @@ * Copyright (C) 2011 - David Goulet * Copyright (C) 2011 - Mathieu Desnoyers * - * 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 @@ -27,17 +26,15 @@ #include #include #include +#include + +#include #include "../command.h" static int opt_event_type; -static char *opt_kernel; +static int opt_kernel; static int opt_userspace; -#if 0 -/* Not implemented yet */ -static char *opt_cmd_name; -static pid_t opt_pid; -#endif enum { OPT_HELP = 1, @@ -48,34 +45,19 @@ enum { 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_VAL, &opt_kernel, 1, 0, 0}, -#if 0 - /* Not implemented yet */ - {"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}, - {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, - {"marker", 0, POPT_ARG_NONE, 0, OPT_MARKER, 0, 0}, - {"probe", 0, POPT_ARG_NONE, 0, OPT_PROBE, 0, 0}, -#else + {"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}, -#endif -#if 0 - /* - * Removed from options to discourage its use. Not in kernel - * tracer anymore. - */ - {"function:entry", 0, POPT_ARG_NONE, 0, OPT_FUNCTION_ENTRY, 0, 0}, -#endif - {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, {0, 0, 0, 0, 0, 0, 0} }; @@ -85,34 +67,16 @@ static struct poptOption long_options[] = { */ static void usage(FILE *ofp) { - fprintf(ofp, "usage: lttng calibrate [options] [calibrate_options]\n"); + fprintf(ofp, "usage: lttng calibrate [-k|-u] [OPTIONS]\n"); fprintf(ofp, "\n"); + fprintf(ofp, "Options:\n"); fprintf(ofp, " -h, --help Show this help\n"); fprintf(ofp, " --list-options Simple listing of options\n"); fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n"); -#if 0 - fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer (domain: UST\n"); - fprintf(ofp, " EXEC_NAME). If no CMD, the domain is UST global.\n"; - fprintf(ofp, " (-k preempts -u)\n"); - fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); -#else fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); -#endif fprintf(ofp, "\n"); fprintf(ofp, "Calibrate options:\n"); -#if 0 - fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); - fprintf(ofp, " --probe\n"); - fprintf(ofp, " Dynamic probe.\n"); -#if 0 - fprintf(ofp, " --function:entry symbol\n"); - fprintf(ofp, " Function tracer event\n"); -#endif - fprintf(ofp, " --syscall System call eventl\n"); - fprintf(ofp, " --marker User-space marker (deprecated)\n"); -#else fprintf(ofp, " --function Dynamic function entry/return probe (default)\n"); -#endif fprintf(ofp, "\n"); } @@ -127,15 +91,17 @@ static int calibrate_lttng(void) 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 { - ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); - ret = CMD_ERROR; - goto error; + /* Checked by the caller. */ + assert(0); } handle = lttng_create_handle(NULL, &dom); @@ -156,7 +122,7 @@ static int calibrate_lttng(void) calibrate.type = LTTNG_CALIBRATE_FUNCTION; ret = lttng_calibrate(handle, &calibrate); if (ret < 0) { - ret = CMD_ERROR; + ERR("%s", lttng_strerror(ret)); goto error; } MSG("%s calibration done", opt_kernel ? "Kernel" : "UST"); @@ -172,7 +138,14 @@ static int calibrate_lttng(void) goto error; } - ret = CMD_SUCCESS; + if (lttng_opt_mi) { + assert(writer); + ret = mi_lttng_calibrate(writer, &calibrate); + if (ret) { + ret = CMD_ERROR; + goto error; + } + } error: lttng_destroy_handle(handle); @@ -187,7 +160,7 @@ error: */ int cmd_calibrate(int argc, const char **argv) { - int opt, ret = CMD_SUCCESS; + int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; static poptContext pc; pc = poptGetContext(NULL, argc, argv, long_options, 0); @@ -222,6 +195,9 @@ int cmd_calibrate(int argc, const char **argv) 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; @@ -232,9 +208,77 @@ int cmd_calibrate(int argc, const char **argv) } } - ret = calibrate_lttng(); + 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; }