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uftrace.c
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uftrace.c
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/*
* uftrace - Function (Graph) Tracer for Userspace
*
* Copyright (C) 2014-2018 LG Electronics
* Author: Namhyung Kim <[email protected]>
*
* 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; version 2 of the License.
*
* 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
*/
#include <dirent.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
/* This should be defined before #include "utils.h" */
#define PR_FMT "uftrace"
#include "uftrace.h"
#include "utils/script.h"
#include "utils/utils.h"
#include "version.h"
static const char uftrace_version[] = "uftrace " UFTRACE_VERSION;
static bool dbg_domain_set = false;
static bool parsing_default_opts = false;
enum uftrace_short_options {
OPT_flat = 301,
OPT_no_libcall,
OPT_symbols,
OPT_logfile,
OPT_force,
OPT_task,
OPT_no_merge,
OPT_nop,
OPT_time,
OPT_max_stack,
OPT_host,
OPT_port,
OPT_nopager,
OPT_avg_total,
OPT_avg_self,
OPT_color,
OPT_disabled,
OPT_trace,
OPT_demangle,
OPT_dbg_domain,
OPT_report,
OPT_column_view,
OPT_column_offset,
OPT_bind_not,
OPT_task_newline,
OPT_chrome_trace,
OPT_flame_graph,
OPT_graphviz,
OPT_sample_time,
OPT_diff,
OPT_format,
OPT_sort_column,
OPT_tid_filter,
OPT_num_thread,
OPT_no_comment,
OPT_libmcount_single,
OPT_rt_prio,
OPT_kernel_bufsize,
OPT_kernel_skip_out,
OPT_kernel_full,
OPT_kernel_only,
OPT_list_event,
OPT_run_cmd,
OPT_opt_file,
OPT_keep_pid,
OPT_diff_policy,
OPT_event_full,
OPT_record,
OPT_no_args,
OPT_libname,
OPT_match_type,
OPT_no_randomize_addr,
OPT_no_event,
OPT_no_sched,
OPT_no_sched_preempt,
OPT_signal,
OPT_srcline,
OPT_with_syms,
OPT_clock,
OPT_usage,
OPT_libmcount_path,
OPT_mermaid,
OPT_library_path,
OPT_loc_filter,
};
/* clang-format off */
__used static const char uftrace_usage[] =
" uftrace -- function (graph) tracer for userspace\n"
"\n"
" usage: uftrace [COMMAND] [OPTION...] [<program>]\n"
"\n"
" COMMAND:\n"
" record Run a program and saves the trace data\n"
" replay Show program execution in the trace data\n"
" report Show performance statistics in the trace data\n"
" live Do record and replay in a row (default)\n"
" info Show system and program info in the trace data\n"
" dump Show low-level trace data\n"
" recv Save the trace data from network\n"
" graph Show function call graph in the trace data\n"
" script Run a script for recorded trace data\n"
" tui Show text user interface for graph and report\n"
"\n";
__used static const char uftrace_help[] =
" OPTION:\n"
" --avg-self Show average/min/max of self function time\n"
" --avg-total Show average/min/max of total function time\n"
" -a, --auto-args Show arguments and return value of known functions\n"
" -A, --argument=FUNC@arg[,arg,...]\n"
" Show function arguments\n"
" -b, --buffer=SIZE Size of tracing buffer (default: "
stringify(SHMEM_BUFFER_SIZE_KB) "K)\n"
" --chrome Dump recorded data in chrome trace format\n"
" --clock Set clock source for timestamp (default: mono)\n"
" --color=SET Use color for output: yes, no, auto (default: auto)\n"
" --column-offset=DEPTH Offset of each column (default: "
stringify(OPT_COLUMN_OFFSET) ")\n"
" --column-view Print tasks in separate columns\n"
" -C, --caller-filter=FUNC Only trace callers of those FUNCs\n"
" -d, --data=DATA Use this DATA instead of uftrace.data\n"
" --debug-domain=DOMAIN Filter debugging domain\n"
" --demangle=TYPE C++ symbol demangling: full, simple, no\n"
" (default: simple)\n"
" --diff=DATA Report differences\n"
" --diff-policy=POLICY Control diff report policy\n"
" (default: 'abs,compact,no-percent')\n"
" --disable Start with tracing disabled (deprecated)\n"
" -D, --depth=DEPTH Trace functions within DEPTH\n"
" -e, --estimate-return Use only entry record type for safety\n"
" --event-full Show all events outside of function\n"
" -E, --Event=EVENT Enable EVENT to save more information\n"
" --flame-graph Dump recorded data in FlameGraph format\n"
" --flat Use flat output format\n"
" --force Trace even if executable is not instrumented\n"
" --format=FORMAT Use FORMAT for output: normal, html (default: normal)\n"
" -f, --output-fields=FIELD Show FIELDs in the replay or graph output\n"
" -F, --filter=FUNC Only trace those FUNCs\n"
" -g --agent Start an agent in mcount to listen to commands\n"
" --graphviz Dump recorded data in DOT format\n"
" -H, --hide=FUNC Hide FUNCs from trace\n"
" --host=HOST Send trace data to HOST instead of write to file\n"
" -k, --kernel Trace kernel functions also (if supported)\n"
" --keep-pid Keep same pid during execution of traced program\n"
" --kernel-buffer=SIZE Size of kernel tracing buffer (default: 1408K)\n"
" --kernel-full Show kernel functions outside of user\n"
" --kernel-only Dump kernel data only\n"
" --kernel-skip-out Skip kernel functions outside of user (deprecated)\n"
" -K, --kernel-depth=DEPTH Trace kernel functions within DEPTH\n"
" --libmcount-single Use single thread version of libmcount\n"
" --list-event List available events\n"
" -L, --loc-filter=LOCATION Only trace functions in the source LOCATION\n"
" --logfile=FILE Save log messages to this file\n"
" -l, --nest-libcall Show nested library calls\n"
" --libname Show libname name with symbol name\n"
" --libmcount-path=PATH Load libmcount libraries from this PATH\n"
" --match=TYPE Support pattern match: regex, glob (default:\n"
" regex)\n"
" --max-stack=DEPTH Set max stack depth to DEPTH (default: "
stringify(OPT_RSTACK_MAX) ")\n"
" --no-args Do not show arguments and return value\n"
" --no-comment Don't show comments of returned functions\n"
" --no-event Disable (default) events\n"
" --no-sched Disable schedule events\n"
" --no-sched-preempt Hide pre-emptive schedule event\n"
" but show regular(sleeping) schedule event\n"
" --no-libcall Don't trace library function calls\n"
" --no-merge Don't merge leaf functions\n"
" --no-pager Do not use pager\n"
" --no-pltbind Do not bind dynamic symbols (LD_BIND_NOT)\n"
" --no-randomize-addr Disable ASLR (Address Space Layout Randomization)\n"
" --nop No operation (for performance test)\n"
" --num-thread=NUM Create NUM recorder threads\n"
" -N, --notrace=FUNC Don't trace those FUNCs\n"
" --opt-file=FILE Read command-line options from FILE\n"
" -p --pid=PID PID of an interactive mcount instance\n"
" --port=PORT Use PORT for network connection (default: "
stringify(UFTRACE_RECV_PORT) ")\n"
" -P, --patch=FUNC Apply dynamic patching for FUNCs\n"
" --record Record a new trace data before running command\n"
" --report Show live report\n"
" --rt-prio=PRIO Record with real-time (FIFO) priority\n"
" -r, --time-range=TIME~TIME Show output within the TIME(timestamp or elapsed time)\n"
" range only\n"
" --run-cmd=CMDLINE Command line that want to execute after tracing\n"
" data received\n"
" -R, --retval=FUNC@retval Show function return value\n"
" --sample-time=TIME Show flame graph with this sampling time\n"
" --signal=SIG@act[,act,...] Trigger action on those SIGnal\n"
" --sort-column=INDEX Sort diff report on column INDEX (default: 2)\n"
" --srcline Enable recording source line info\n"
" --symbols Print symbol tables\n"
" -s, --sort=KEY[,KEY,...] Sort reported functions by KEYs (default: "
stringify(OPT_SORT_COLUMN) ")\n"
" -S, --script=SCRIPT Run a given SCRIPT in function entry and exit\n"
" -t, --time-filter=TIME Hide small functions run less than the TIME\n"
" --task Show task info instead\n"
" --task-newline Interleave a newline when task is changed\n"
" --tid=TID[,TID,...] Only replay those tasks\n"
" --time Print time information\n"
" --trace=STATE Set the recording state: on, off (default: on)\n"
" -T, --trigger=FUNC@act[,act,...]\n"
" Trigger action on those FUNCs\n"
" -U, --unpatch=FUNC Don't apply dynamic patching for FUNCs\n"
" -v, --debug Print debug messages\n"
" --verbose Print verbose (debug) messages\n"
" --with-syms=DIR Use symbol files in the DIR\n"
" -W, --watch=POINT Watch and report POINT if it's changed\n"
" -Z, --size-filter=SIZE Apply dynamic patching for functions bigger than SIZE\n"
" -h, --help Give this help list\n"
" --usage Give a short usage message\n"
" -V, --version Print program version\n"
"\n"
" Try `man uftrace [COMMAND]' for more information.\n"
"\n";
__used static const char uftrace_footer[] =
" Try `uftrace --help' or `man uftrace [COMMAND]' for more information.\n"
"\n";
static const char uftrace_shopts[] =
"+aA:b:C:d:D:eE:f:F:ghH:kK:lL:N:p:P:r:R:s:S:t:T:U:vVW:Z:";
#define REQ_ARG(name, shopt) { #name, required_argument, 0, shopt }
#define NO_ARG(name, shopt) { #name, no_argument, 0, shopt }
static const struct option uftrace_options[] = {
REQ_ARG(libmcount-path, OPT_libmcount_path),
REQ_ARG(library-path, OPT_libmcount_path),
REQ_ARG(filter, 'F'),
REQ_ARG(notrace, 'N'),
REQ_ARG(depth, 'D'),
REQ_ARG(time-filter, 't'),
REQ_ARG(caller-filter, 'C'),
REQ_ARG(argument, 'A'),
REQ_ARG(trigger, 'T'),
REQ_ARG(retval, 'R'),
NO_ARG(auto-args, 'a'),
NO_ARG(no-args, OPT_no_args),
REQ_ARG(patch, 'P'),
REQ_ARG(unpatch, 'U'),
REQ_ARG(size-filter, 'Z'),
NO_ARG(debug, 'v'),
NO_ARG(verbose, 'v'),
REQ_ARG(debug-domain, OPT_dbg_domain),
NO_ARG(force, OPT_force),
REQ_ARG(data, 'd'),
NO_ARG(flat, OPT_flat),
NO_ARG(symbols, OPT_symbols),
REQ_ARG(buffer, 'b'),
REQ_ARG(logfile, OPT_logfile),
NO_ARG(task, OPT_task),
REQ_ARG(tid, OPT_tid_filter),
NO_ARG(no-merge, OPT_no_merge),
NO_ARG(nop, OPT_nop),
NO_ARG(time, OPT_time),
REQ_ARG(max-stack, OPT_max_stack),
REQ_ARG(host, OPT_host),
REQ_ARG(port, OPT_port),
NO_ARG(no-pager, OPT_nopager),
REQ_ARG(sort, 's'),
NO_ARG(avg-total, OPT_avg_total),
NO_ARG(avg-self, OPT_avg_self),
REQ_ARG(color, OPT_color),
NO_ARG(disable, OPT_disabled),
REQ_ARG(trace, OPT_trace),
REQ_ARG(demangle, OPT_demangle),
NO_ARG(record, OPT_record),
NO_ARG(report, OPT_report),
NO_ARG(column-view, OPT_column_view),
REQ_ARG(column-offset, OPT_column_offset),
NO_ARG(no-pltbind, OPT_bind_not),
NO_ARG(task-newline, OPT_task_newline),
NO_ARG(chrome, OPT_chrome_trace),
NO_ARG(graphviz, OPT_graphviz),
NO_ARG(flame-graph, OPT_flame_graph),
NO_ARG(mermaid, OPT_mermaid),
REQ_ARG(sample-time, OPT_sample_time),
REQ_ARG(diff, OPT_diff),
REQ_ARG(format, OPT_format),
REQ_ARG(sort-column, OPT_sort_column),
REQ_ARG(num-thread, OPT_num_thread),
NO_ARG(no-comment, OPT_no_comment),
NO_ARG(libmcount-single, OPT_libmcount_single),
REQ_ARG(rt-prio, OPT_rt_prio),
NO_ARG(kernel, 'k'),
REQ_ARG(kernel-depth, 'K'),
REQ_ARG(kernel-buffer, OPT_kernel_bufsize),
NO_ARG(kernel-skip-out, OPT_kernel_skip_out),
NO_ARG(kernel-full, OPT_kernel_full),
NO_ARG(kernel-only, OPT_kernel_only),
REQ_ARG(output-fields, 'f'),
REQ_ARG(time-range, 'r'),
REQ_ARG(Event, 'E'),
NO_ARG(no-event, OPT_no_event),
NO_ARG(no-sched, OPT_no_sched),
NO_ARG(no-sched-preempt, OPT_no_sched_preempt),
NO_ARG(list-event, OPT_list_event),
REQ_ARG(run-cmd, OPT_run_cmd),
REQ_ARG(opt-file, OPT_opt_file),
NO_ARG(keep-pid, OPT_keep_pid),
REQ_ARG(script, 'S'),
REQ_ARG(diff-policy, OPT_diff_policy),
NO_ARG(event-full, OPT_event_full),
NO_ARG(no-libcall, OPT_no_libcall),
NO_ARG(nest-libcall, 'l'),
NO_ARG(libname, OPT_libname),
REQ_ARG(match, OPT_match_type),
NO_ARG(no-randomize-addr, OPT_no_randomize_addr),
REQ_ARG(watch, 'W'),
REQ_ARG(signal, OPT_signal),
NO_ARG(srcline, OPT_srcline),
REQ_ARG(hide, 'H'),
REQ_ARG(loc-filter, OPT_loc_filter),
REQ_ARG(loc-filter-warning, 'L'), /* the long option is dummy, will change later */
REQ_ARG(clock, OPT_clock),
NO_ARG(help, 'h'),
NO_ARG(usage, OPT_usage),
NO_ARG(version, 'V'),
NO_ARG(estimate-return, 'e'),
REQ_ARG(with-syms, OPT_with_syms),
NO_ARG(agent, 'g'),
REQ_ARG(pid, 'p'),
{ 0 }
};
/* clang-format on */
#undef REQ_ARG
#undef NO_ARG
static unsigned long parse_size(char *str)
{
unsigned long size;
char *unit;
size = strtoul(str, &unit, 0);
switch (*unit) {
case '\0':
break;
case 'k':
case 'K':
size <<= 10;
break;
case 'm':
case 'M':
size <<= 20;
break;
case 'g':
case 'G':
size <<= 30;
break;
default:
pr_use("invalid size: %s\n", str);
size = 0;
break;
}
return size;
}
static char *opt_add_string(char *old_opt, char *new_opt)
{
return strjoin(old_opt, new_opt, ";");
}
static char *opt_add_prefix_string(char *old_opt, char *prefix, char *new_opt)
{
new_opt = strjoin(xstrdup(prefix), new_opt, "");
if (old_opt) {
old_opt = strjoin(old_opt, new_opt, ";");
free(new_opt);
new_opt = old_opt;
}
return new_opt;
}
static const char *true_str[] = {
"true", "yes", "on", "y", "1",
};
static const char *false_str[] = {
"false", "no", "off", "n", "0",
};
static enum color_setting parse_color(char *arg)
{
size_t i;
for (i = 0; i < ARRAY_SIZE(true_str); i++) {
if (!strcmp(arg, true_str[i]))
return COLOR_ON;
}
for (i = 0; i < ARRAY_SIZE(false_str); i++) {
if (!strcmp(arg, false_str[i]))
return COLOR_OFF;
}
if (!strcmp(arg, "auto"))
return COLOR_AUTO;
return COLOR_UNKNOWN;
}
static int parse_demangle(char *arg)
{
size_t i;
if (!strcmp(arg, "simple"))
return DEMANGLE_SIMPLE;
if (!strcmp(arg, "full")) {
if (support_full_demangle())
return DEMANGLE_FULL;
return DEMANGLE_NOT_SUPPORTED;
}
for (i = 0; i < ARRAY_SIZE(false_str); i++) {
if (!strcmp(arg, false_str[i]))
return DEMANGLE_NONE;
}
return DEMANGLE_ERROR;
}
static void parse_debug_domain(char *arg)
{
struct strv strv = STRV_INIT;
char *tok, *tmp;
int i;
strv_split(&strv, arg, ",");
strv_for_each(&strv, tok, i) {
int level = -1;
tmp = strchr(tok, ':');
if (tmp) {
*tmp++ = '\0';
level = strtol(tmp, NULL, 0);
}
if (!strcmp(tok, "ftrace")) /* for backward compatibility */
dbg_domain[DBG_UFTRACE] = level;
else if (!strcmp(tok, "uftrace"))
dbg_domain[DBG_UFTRACE] = level;
else if (!strcmp(tok, "symbol"))
dbg_domain[DBG_SYMBOL] = level;
else if (!strcmp(tok, "demangle"))
dbg_domain[DBG_DEMANGLE] = level;
else if (!strcmp(tok, "filter"))
dbg_domain[DBG_FILTER] = level;
else if (!strcmp(tok, "fstack"))
dbg_domain[DBG_FSTACK] = level;
else if (!strcmp(tok, "session"))
dbg_domain[DBG_SESSION] = level;
else if (!strcmp(tok, "kernel"))
dbg_domain[DBG_KERNEL] = level;
else if (!strcmp(tok, "mcount"))
dbg_domain[DBG_MCOUNT] = level;
else if (!strcmp(tok, "plthook"))
dbg_domain[DBG_PLTHOOK] = level;
else if (!strcmp(tok, "dynamic"))
dbg_domain[DBG_DYNAMIC] = level;
else if (!strcmp(tok, "event"))
dbg_domain[DBG_EVENT] = level;
else if (!strcmp(tok, "script"))
dbg_domain[DBG_SCRIPT] = level;
else if (!strcmp(tok, "dwarf"))
dbg_domain[DBG_DWARF] = level;
else if (!strcmp(tok, "wrap"))
dbg_domain[DBG_WRAP] = level;
}
dbg_domain_set = true;
strv_free(&strv);
}
static bool has_time_unit(const char *str)
{
if (isalpha(str[strlen(str) - 1]))
return true;
else
return false;
}
static uint64_t parse_any_timestamp(char *str, bool *elapsed)
{
if (*str == '\0')
return 0;
if (has_time_unit(str)) {
*elapsed = true;
return parse_time(str, 3);
}
*elapsed = false;
return parse_timestamp(str);
}
static bool parse_time_range(struct uftrace_time_range *range, char *arg)
{
char *str, *pos;
str = xstrdup(arg);
pos = strchr(str, '~');
if (pos == NULL) {
free(str);
return false;
}
*pos++ = '\0';
range->start = parse_any_timestamp(str, &range->start_elapsed);
range->stop = parse_any_timestamp(pos, &range->stop_elapsed);
free(str);
return true;
}
static char *remove_trailing_slash(char *path)
{
size_t len = strlen(path);
if (path[len - 1] == '/')
path[len - 1] = '\0';
return path;
}
static bool is_libmcount_directory(const char *path)
{
DIR *dp = NULL;
struct dirent *ent;
int ret = false;
dp = opendir(path);
if (dp == NULL)
return false;
while ((ent = readdir(dp)) != NULL) {
if ((ent->d_type == DT_DIR && !strcmp(ent->d_name, "libmcount")) ||
((ent->d_type == DT_LNK || ent->d_type == DT_REG) &&
!strcmp(ent->d_name, "libmcount.so"))) {
ret = true;
break;
}
}
closedir(dp);
return ret;
}
static int parse_option(struct uftrace_opts *opts, int key, char *arg)
{
char *pos;
switch (key) {
case 'F':
opts->filter = opt_add_string(opts->filter, arg);
break;
case 'N':
opts->filter = opt_add_prefix_string(opts->filter, "!", arg);
break;
case 'T':
opts->trigger = opt_add_string(opts->trigger, arg);
break;
case 'D':
opts->depth = strtol(arg, NULL, 0);
if (opts->depth <= 0 || opts->depth >= OPT_DEPTH_MAX) {
pr_use("invalid depth given: %s (ignoring..)\n", arg);
opts->depth = OPT_DEPTH_DEFAULT;
}
break;
case 'C':
opts->caller = opt_add_string(opts->caller, arg);
/*
* caller filter focuses onto a given function,
* displaying sched event with it is annoying.
*/
opts->no_sched = true;
break;
case 'H':
opts->hide = opt_add_string(opts->hide, arg);
break;
case 'L':
if (is_libmcount_directory(arg))
pr_warn("--libmcount-path option should be used to set libmcount path.\n");
/* fall through */
case OPT_loc_filter:
pos = strstr(arg, "@hide");
if (!pos)
opts->loc_filter = opt_add_string(opts->loc_filter, arg);
else {
*pos = '\0';
opts->loc_filter = opt_add_prefix_string(opts->loc_filter, "!", arg);
}
/*
* location filter focuses onto a given location,
* displaying sched event with it is annoying.
*/
opts->no_sched = true;
break;
case 'v':
debug++;
break;
case 'd':
opts->dirname = remove_trailing_slash(arg);
break;
case 'b':
opts->bufsize = parse_size(arg);
if (opts->bufsize & (getpagesize() - 1)) {
pr_use("buffer size should be multiple of page size\n");
opts->bufsize = ROUND_UP(opts->bufsize, getpagesize());
}
break;
case 'k':
opts->kernel = true;
break;
case 'K':
opts->kernel = true;
opts->kernel_depth = strtol(arg, NULL, 0);
if (opts->kernel_depth < 1 || opts->kernel_depth > 50) {
pr_use("invalid kernel depth: %s (ignoring...)\n", arg);
opts->kernel_depth = 0;
}
break;
case 's':
opts->sort_keys = opt_add_string(opts->sort_keys, arg);
break;
case 'S':
opts->script_file = arg;
break;
case 't':
/* do not override time-filter or time-range if it's already set */
if (parsing_default_opts) {
if (opts->threshold || opts->range.start || opts->range.stop)
break;
}
/* add time-filter to uftrace.data/default.opts */
strv_append(&default_opts, "-t");
strv_append(&default_opts, arg);
opts->threshold = parse_time(arg, 3);
if (opts->threshold >= OPT_THRESHOLD_MAX) {
pr_use("invalid time given: %lu (ignoring..)\n", opts->threshold);
opts->threshold = OPT_THRESHOLD_MAX - 1;
}
if (opts->range.start || opts->range.stop) {
pr_use("--time-range cannot be used with --time-filter\n");
opts->range.start = opts->range.stop = 0;
}
break;
case 'A':
opts->args = opt_add_string(opts->args, arg);
break;
case 'R':
opts->retval = opt_add_string(opts->retval, arg);
break;
case 'a':
opts->auto_args = true;
break;
case 'l':
/* --nest-libcall implies --force option */
opts->force = true;
opts->nest_libcall = true;
break;
case 'f':
opts->fields = arg;
break;
case 'r':
if (!parse_time_range(&opts->range, arg))
pr_use("invalid time range: %s (ignoring...)\n", arg);
if (opts->threshold) {
pr_use("--time-filter cannot be used with --time-range\n");
opts->threshold = 0;
}
break;
case 'P':
opts->patch = opt_add_string(opts->patch, arg);
break;
case 'U':
opts->patch = opt_add_prefix_string(opts->patch, "!", arg);
break;
case 'Z':
opts->size_filter = strtol(arg, NULL, 0);
if (opts->size_filter <= 0) {
pr_use("--size-filter should be positive\n");
opts->size_filter = 0;
}
break;
case 'E':
if (!strcmp(arg, "list")) {
pr_use("'-E list' is deprecated, use --list-event instead.\n");
opts->list_event = true;
}
else
opts->event = opt_add_string(opts->event, arg);
break;
case 'W':
opts->watch = opt_add_string(opts->watch, arg);
break;
case 'e':
opts->estimate_return = true;
break;
case 'V':
pr_out("%s\n", uftrace_version);
return -1;
case 'g':
opts->agent = true;
break;
case 'h':
return -3;
case 'p':
opts->pid = strtol(arg, NULL, 0);
opts->exename = "";
break;
case OPT_libmcount_path:
opts->lib_path = arg;
break;
case OPT_usage:
return -2;
case OPT_flat:
opts->flat = true;
break;
case OPT_no_libcall:
opts->libcall = false;
break;
case OPT_symbols:
opts->print_symtab = true;
break;
case OPT_logfile:
opts->logfile = arg;
break;
case OPT_force:
opts->force = true;
break;
case OPT_task:
opts->show_task = true;
break;
case OPT_tid_filter:
if (strtol(arg, NULL, 0) <= 0)
pr_use("invalid thread id: %s\n", arg);
else
opts->tid = opt_add_string(opts->tid, arg);
break;
case OPT_no_merge:
opts->no_merge = true;
break;
case OPT_nop:
opts->nop = true;
break;
case OPT_time:
opts->time = true;
break;
case OPT_max_stack:
opts->max_stack = strtol(arg, NULL, 0);
if (opts->max_stack <= 0 || opts->max_stack > OPT_RSTACK_MAX) {
pr_use("max stack depth should be >0 and <%d\n", OPT_RSTACK_MAX);
opts->max_stack = OPT_RSTACK_DEFAULT;
}
break;
case OPT_host:
opts->host = arg;
break;
case OPT_port:
opts->port = strtol(arg, NULL, 0);
if (opts->port <= 0) {
pr_use("invalid port number: %s (ignoring..)\n", arg);
opts->port = UFTRACE_RECV_PORT;
}
break;
case OPT_nopager:
opts->use_pager = false;
break;
case OPT_avg_total:
opts->avg_total = true;
break;
case OPT_avg_self:
opts->avg_self = true;
break;
case OPT_color:
opts->color = parse_color(arg);
if (opts->color == COLOR_UNKNOWN) {
pr_use("unknown color setting: %s (ignoring..)\n", arg);
opts->color = COLOR_AUTO;
}
break;
case OPT_disabled:
pr_use("'--disable' is deprecated, use --trace=off instead.\n");
opts->trace = TRACE_STATE_OFF;
break;
case OPT_trace:
if (!strcmp(arg, "on"))
opts->trace = TRACE_STATE_ON;
else if (!strcmp(arg, "off"))
opts->trace = TRACE_STATE_OFF;
else
pr_use("unknown tracing state: %s (ignoring..)\n", arg);
break;
case OPT_demangle:
demangler = parse_demangle(arg);
if (demangler == DEMANGLE_ERROR) {
pr_use("unknown demangle value: %s (ignoring..)\n", arg);
demangler = DEMANGLE_SIMPLE;
}
else if (demangler == DEMANGLE_NOT_SUPPORTED) {
pr_use("'%s' demangler is not supported\n", arg);
demangler = DEMANGLE_SIMPLE;
}
break;
case OPT_dbg_domain:
parse_debug_domain(arg);
break;
case OPT_report:
opts->report = true;
break;
case OPT_column_view:
opts->column_view = true;
break;
case OPT_column_offset:
opts->column_offset = strtol(arg, NULL, 0);
if (opts->column_offset < 0)
opts->column_offset = OPT_COLUMN_OFFSET;
break;
case OPT_bind_not:
opts->want_bind_not = true;
break;
case OPT_task_newline:
opts->task_newline = true;
break;
case OPT_chrome_trace:
opts->chrome_trace = true;
break;
case OPT_flame_graph:
opts->flame_graph = true;
break;
case OPT_graphviz:
opts->graphviz = true;
break;
case OPT_diff:
opts->diff = arg;
break;
case OPT_diff_policy:
opts->diff_policy = arg;
break;
case OPT_format:
if (!strcmp(arg, "normal"))
format_mode = FORMAT_NORMAL;
else if (!strcmp(arg, "html")) {
format_mode = FORMAT_HTML;
if (opts->color == COLOR_AUTO)
opts->color = COLOR_ON;
}
else {
pr_use("invalid format argument: %s\n", arg);
format_mode = FORMAT_NORMAL;
}
break;
case OPT_sort_column:
opts->sort_column = strtol(arg, NULL, 0);
if (opts->sort_column < 0 || opts->sort_column > OPT_SORT_COLUMN) {
pr_use("invalid column number: %d\n", opts->sort_column);
pr_use("force to set it to --sort-column=%d for diff percentage\n",
OPT_SORT_COLUMN);
opts->sort_column = OPT_SORT_COLUMN;
}
break;
case OPT_num_thread:
opts->nr_thread = strtol(arg, NULL, 0);
if (opts->nr_thread < 0) {
pr_use("invalid thread number: %s\n", arg);
opts->nr_thread = 0;
}
break;
case OPT_no_comment:
opts->comment = false;
break;
case OPT_libmcount_single:
opts->libmcount_single = true;
break;
case OPT_rt_prio:
opts->rt_prio = strtol(arg, NULL, 0);
if (opts->rt_prio < 1 || opts->rt_prio > 99) {
pr_use("invalid rt prioity: %d (ignoring...)\n", opts->rt_prio);
opts->rt_prio = 0;
}
break;
case OPT_kernel_bufsize:
opts->kernel_bufsize = parse_size(arg);
if (opts->kernel_bufsize & (getpagesize() - 1)) {
pr_use("buffer size should be multiple of page size\n");
opts->kernel_bufsize = ROUND_UP(opts->kernel_bufsize, getpagesize());
}
break;
case OPT_kernel_skip_out: /* deprecated */
opts->kernel_skip_out = true;
break;