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bootchart: print to stdout and display default values in help

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2014-04-24 19:16:37 -04:00
parent 7e6798df26
commit c7fc641ea3
1 changed files with 41 additions and 24 deletions
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65
src/bootchart/bootchart.c
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@ -72,6 +72,13 @@ int overrun = 0;
static int exiting = 0;
int sysfd=-1;
#define DEFAULT_SAMPLES_LEN 500
#define DEFAULT_HZ 25.0
#define DEFAULT_SCALE_X 100.0 /* 100px = 1sec */
#define DEFAULT_SCALE_Y 20.0 /* 16px = 1 process bar */
#define DEFAULT_INIT "/sbin/init"
#define DEFAULT_OUTPUT "/run/log"
/* graph defaults */
bool arg_entropy = false;
bool initcall = true;
@ -81,15 +88,15 @@ bool arg_show_cmdline = false;
bool arg_show_cgroup = false;
bool arg_pss = false;
int samples;
int arg_samples_len = 500; /* we record len+1 (1 start sample) */
double arg_hz = 25.0; /* 20 seconds log time */
double arg_scale_x = 100.0; /* 100px = 1sec */
double arg_scale_y = 20.0; /* 16px = 1 process bar */
int arg_samples_len = DEFAULT_SAMPLES_LEN; /* we record len+1 (1 start sample) */
double arg_hz = DEFAULT_HZ;
double arg_scale_x = DEFAULT_SCALE_X;
double arg_scale_y = DEFAULT_SCALE_Y;
static struct list_sample_data *sampledata;
struct list_sample_data *head;
char arg_init_path[PATH_MAX] = "/sbin/init";
char arg_output_path[PATH_MAX] = "/run/log";
char arg_init_path[PATH_MAX] = DEFAULT_INIT;
char arg_output_path[PATH_MAX] = DEFAULT_OUTPUT;
static void signal_handler(int sig) {
if (sig++)
@ -135,6 +142,33 @@ static void parse_conf(void) {
strscpy(arg_output_path, sizeof(arg_output_path), output);
}
static void help(void) {
fprintf(stdout,
"Usage: %s [OPTIONS]\n\n"
"Options:\n"
" -r, --rel Record time relative to recording\n"
" -f, --freq=FREQ Sample frequency [%g]\n"
" -n, --samples=N Stop sampling at [%d] samples\n"
" -x, --scale-x=N Scale the graph horizontally [%g] \n"
" -y, --scale-y=N Scale the graph vertically [%g] \n"
" -p, --pss Enable PSS graph (CPU intensive)\n"
" -e, --entropy Enable the entropy_avail graph\n"
" -o, --output=PATH Path to output files [%s]\n"
" -i, --init=PATH Path to init executable [%s]\n"
" -F, --no-filter Disable filtering of unimportant or ephemeral processes\n"
" -C, --cmdline Display full command lines with arguments\n"
" -c, --control-group Display process control group\n"
" -h, --help Display this message\n\n"
"See bootchart.conf for more information.\n",
program_invocation_short_name,
DEFAULT_HZ,
DEFAULT_SAMPLES_LEN,
DEFAULT_SCALE_X,
DEFAULT_SCALE_Y,
DEFAULT_OUTPUT,
DEFAULT_INIT);
}
static int parse_args(int argc, char *argv[]) {
static struct option options[] = {
{"rel", no_argument, NULL, 'r'},
@ -209,24 +243,7 @@ static int parse_args(int argc, char *argv[]) {
arg_entropy = true;
break;
case 'h':
fprintf(stderr, "Usage: %s [OPTIONS]\n\n", argv[0]);
fprintf(stderr, "Options:\n");
fprintf(stderr, " -r, --rel Record time relative to recording\n");
fprintf(stderr, " -f, --freq=FREQ Sample frequency [%f]\n", arg_hz);
fprintf(stderr, " -n, --samples=N Stop sampling at [%d] samples\n", arg_samples_len);
fprintf(stderr, " -x, --scale-x=N Scale the graph horizontally [%f] \n", arg_scale_x);
fprintf(stderr, " -y, --scale-y=N Scale the graph vertically [%f] \n", arg_scale_y);
fprintf(stderr, " -p, --pss Enable PSS graph (CPU intensive)\n");
fprintf(stderr, " -e, --entropy Enable the entropy_avail graph\n");
fprintf(stderr, " -o, --output=PATH Path to output files [%s]\n", arg_output_path);
fprintf(stderr, " -i, --init=PATH Path to init executable [%s]\n", arg_init_path);
fprintf(stderr, " -F, --no-filter Disable filtering of processes from the graph\n");
fprintf(stderr, " that are of less importance or short-lived\n");
fprintf(stderr, " -C, --cmdline Display the full command line with arguments\n");
fprintf(stderr, " of processes, instead of only the process name\n");
fprintf(stderr, " -c, --control-group Display process control group\n");
fprintf(stderr, " -h, --help Display this message\n\n");
fprintf(stderr, "See bootchart.conf for more information.\n");
help();
exit (EXIT_SUCCESS);
default:
break;