X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Foping.c;h=367227ae17e1cc6dfb95b9741626245a29922840;hb=d85b13b65a33de75bd8731f713db2cce7bcc41d7;hp=ccaafe057744cd90d14a0e04d986dbcde782b1a0;hpb=faa01e58cd5b3863bc5891c25176ea0ae2d71679;p=liboping.git diff --git a/src/oping.c b/src/oping.c index ccaafe0..367227a 100644 --- a/src/oping.c +++ b/src/oping.c @@ -1,6 +1,6 @@ /** * Object oriented C module to send ICMP and ICMPv6 `echo's. - * Copyright (C) 2006-2011 Florian octo Forster + * Copyright (C) 2006-2014 Florian octo Forster * * 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 @@ -75,12 +75,18 @@ #endif #include +#include #if USE_NCURSES # define NCURSES_OPAQUE 1 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */ # define _X_OPEN_SOURCE_EXTENDED -# include + +# if HAVE_NCURSESW_NCURSES_H +# include +# elif HAVE_NCURSES_H +# include +# endif # define OPING_GREEN 1 # define OPING_YELLOW 2 @@ -88,16 +94,55 @@ # define OPING_GREEN_HIST 4 # define OPING_YELLOW_HIST 5 # define OPING_RED_HIST 6 + +static char const * const hist_symbols_utf8[] = { + "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" }; +static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8) + / sizeof (hist_symbols_utf8[0]); + +/* scancodes for 6 levels of horizontal bars, ncurses-specific */ +/* those are not the usual constants because those are not constant */ +static int const hist_symbols_acs[] = { + 115, /* ACS_S9 "⎽" */ + 114, /* ACS_S7 "⎼" */ + 113, /* ACS_S5 "─" */ + 112, /* ACS_S3 "⎻" */ + 111 /* ACS_S1 "⎺" */ +}; +static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs) + / sizeof (hist_symbols_acs[0]); + +/* use different colors without a background for scancodes */ +static int const hist_colors_utf8[] = { + OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST }; +static int const hist_colors_acs[] = { + OPING_GREEN, OPING_YELLOW, OPING_RED }; +/* assuming that both arrays are the same size */ +static size_t const hist_colors_num = sizeof (hist_colors_utf8) + / sizeof (hist_colors_utf8[0]); #endif -#include "oping.h" +/* "─" */ +#define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET) +/* "├" */ +#define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET) +/* "┤" */ +#define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET) +/* Inverted */ +#define BOXPLOT_BOX ' ' +/* "│", inverted */ +#define BOXPLOT_MEDIAN (120 | A_ALTCHARSET) -const char *bars[BARS_LEN] = { "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" }; +#include "oping.h" #ifndef _POSIX_SAVED_IDS # define _POSIX_SAVED_IDS 0 #endif +#ifndef IPTOS_MINCOST +# define IPTOS_MINCOST 0x02 +#endif + /* Remove GNU specific __attribute__ settings when using another compiler */ #if !__GNUC__ # define __attribute__(x) /**/ @@ -117,6 +162,11 @@ typedef struct ping_context double latency_total; double latency_total_square; +/* 1000 + one "infinity" bucket. */ +#define OPING_HISTOGRAM_BUCKETS 1001 + uint32_t *latency_histogram; + size_t latency_histogram_size; + #if USE_NCURSES WINDOW *window; #endif @@ -130,6 +180,13 @@ static char *opt_filename = NULL; static int opt_count = -1; static int opt_send_ttl = 64; static uint8_t opt_send_qos = 0; +#define OPING_DEFAULT_PERCENTILE 95.0 +static double opt_percentile = -1.0; +static double opt_exit_status_threshold = 1.0; +#if USE_NCURSES +static int opt_show_graph = 1; +static int opt_utf8 = 0; +#endif static int host_num = 0; @@ -159,6 +216,10 @@ static ping_context_t *context_create (void) /* {{{ */ ret->latency_total = 0.0; ret->latency_total_square = 0.0; + ret->latency_histogram_size = (size_t) OPING_HISTOGRAM_BUCKETS; + ret->latency_histogram = calloc (ret->latency_histogram_size, + sizeof (*ret->latency_histogram)); + #if USE_NCURSES ret->window = NULL; #endif @@ -179,6 +240,9 @@ static void context_destroy (ping_context_t *context) /* {{{ */ } #endif + free (context->latency_histogram); + context->latency_histogram = NULL; + free (context); } /* }}} void context_destroy */ @@ -196,6 +260,44 @@ static double context_get_average (ping_context_t *ctx) /* {{{ */ return (ctx->latency_total / num_total); } /* }}} double context_get_average */ +static double context_get_percentile (ping_context_t *ctx, /* {{{ */ + double percentile) +{ + double threshold = percentile / 100.0; + uint32_t accumulated[ctx->latency_histogram_size]; + double ratios[ctx->latency_histogram_size]; + double index_to_ms_factor; + uint32_t num; + size_t i; + + if (ctx->latency_histogram == NULL) + return (NAN); + + accumulated[0] = ctx->latency_histogram[0]; + for (i = 1; i < ctx->latency_histogram_size; i++) + accumulated[i] = accumulated[i - 1] + + ctx->latency_histogram[i]; + num = accumulated[ctx->latency_histogram_size - 1]; + + for (i = 0; i < ctx->latency_histogram_size; i++) + { + ratios[i] = ((double) accumulated[i]) / ((double) num); + if (ratios[i] >= threshold) + break; + } + + if (i >= ctx->latency_histogram_size) + return (NAN); + else if (i == (ctx->latency_histogram_size - 1)) + return (INFINITY); + + index_to_ms_factor = (1000.0 * opt_interval) / (ctx->latency_histogram_size - 1); + + /* Multiply with i+1, because we're interested in the _upper_ bound of + * each bucket. */ + return (index_to_ms_factor * ((double) (i + 1))); +} /* }}} double context_get_percentile */ + static double context_get_stddev (ping_context_t *ctx) /* {{{ */ { double num_total; @@ -274,6 +376,13 @@ static void usage_exit (const char *name, int status) /* {{{ */ " -I srcaddr source address\n" " -D device outgoing interface name\n" " -f filename filename to read hosts from\n" +#if USE_NCURSES + " -u / -U force / disable UTF-8 output\n" + " -g graph graph type to draw\n" +#endif + " -P percent Report the n'th percentile of latency\n" + " -Z percent Exit with non-zero exit status if more than this percentage of\n" + " probes timed out. (default: never)\n" "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n" "by Florian octo Forster \n" @@ -476,7 +585,11 @@ static int read_options (int argc, char **argv) /* {{{ */ while (1) { - optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:"); + optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:" +#if USE_NCURSES + "uUg:" +#endif + ); if (optchar == -1) break; @@ -493,7 +606,12 @@ static int read_options (int argc, char **argv) /* {{{ */ int new_count; new_count = atoi (optarg); if (new_count > 0) + { opt_count = new_count; + + if ((opt_percentile < 0.0) && (opt_count < 20)) + opt_percentile = 100.0 * (opt_count - 1) / opt_count; + } else fprintf(stderr, "Ignoring invalid count: %s\n", optarg); @@ -519,6 +637,7 @@ static int read_options (int argc, char **argv) /* {{{ */ opt_interval = new_interval; } break; + case 'I': { if (opt_srcaddr != NULL) @@ -547,14 +666,72 @@ static int read_options (int argc, char **argv) /* {{{ */ set_opt_send_qos (optarg); break; + case 'P': + { + double new_percentile; + new_percentile = atof (optarg); + if (isnan (new_percentile) + || (new_percentile < 0.1) + || (new_percentile > 100.0)) + fprintf (stderr, "Ignoring invalid percentile: %s\n", + optarg); + else + opt_percentile = new_percentile; + } + break; + +#if USE_NCURSES + case 'g': + if (strcasecmp ("none", optarg) == 0) + opt_show_graph = 0; + else if (strcasecmp ("prettyping", optarg) == 0) + opt_show_graph = 1; + else if (strcasecmp ("boxplot", optarg) == 0) + opt_show_graph = 2; + else if (strcasecmp ("histogram", optarg) == 0) + opt_show_graph = 3; + else + fprintf (stderr, "Unknown graph option: %s\n", optarg); + break; + + case 'u': + opt_utf8 = 2; + break; + case 'U': + opt_utf8 = 1; + break; +#endif + + case 'Z': + { + char *endptr = NULL; + double tmp; + + errno = 0; + tmp = strtod (optarg, &endptr); + if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0)) + { + fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg); + fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n"); + } + else + opt_exit_status_threshold = tmp / 100.0; + + break; + } + case 'h': usage_exit (argv[0], 0); break; + default: usage_exit (argv[0], 1); } } + if (opt_percentile <= 0.0) + opt_percentile = OPING_DEFAULT_PERCENTILE; + return (optind); } /* }}} read_options */ @@ -606,12 +783,289 @@ static void time_calc (struct timespec *ts_dest, /* {{{ */ } /* }}} void time_calc */ #if USE_NCURSES +static _Bool has_utf8() /* {{{ */ +{ +# if HAVE_NCURSESW_NCURSES_H + if (!opt_utf8) + { + /* Automatically determine */ + if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0) + opt_utf8 = 2; + else + opt_utf8 = 1; + } + return ((_Bool) (opt_utf8 - 1)); +# else + return (0); +# endif +} /* }}} _Bool has_utf8 */ + +static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */ +{ + uint32_t *accumulated; + double *ratios; + uint32_t num; + size_t i; + size_t x_max; + size_t x; + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 4) + return (EINVAL); + x_max -= 4; + + accumulated = calloc (x_max, sizeof (*accumulated)); + ratios = calloc (x_max, sizeof (*ratios)); + + /* Downsample */ + for (i = 0; i < ctx->latency_histogram_size; i++) + { + x = i * x_max / ctx->latency_histogram_size; + accumulated[x] += ctx->latency_histogram[i]; + } + + /* Sum */ + for (x = 1; x < x_max; x++) + accumulated[x] += accumulated[x - 1]; + + num = accumulated[x_max - 1]; + + /* Calculate ratios */ + for (x = 0; x < x_max; x++) + ratios[x] = ((double) accumulated[x]) / ((double) num); + + for (x = 0; x < x_max; x++) + { + int symbol = ' '; + _Bool reverse = 0; + + if (x == 0) + { + if (ratios[x] >= 0.5) + { + symbol = BOXPLOT_MEDIAN; + reverse = 1; + } + else if (ratios[x] > 0.25) + { + symbol = BOXPLOT_BOX; + reverse = 1; + } + else if (ratios[x] > 0.025) + symbol = BOXPLOT_WHISKER_BAR; + else + symbol = ' '; /* NOP */ + } + else /* (x != 0) */ + { + if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5)) + { + symbol = BOXPLOT_MEDIAN; + reverse = 1; + } + else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75)) + || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75))) + { + symbol = BOXPLOT_BOX; + reverse = 1; + } + else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025)) + { + if (ratios[x - 1] < 0.025) + symbol = BOXPLOT_WHISKER_LEFT_END; + else + symbol = BOXPLOT_WHISKER_BAR; + } + else if ((ratios[x] > .5) && (ratios[x] < 0.975)) + { + symbol = BOXPLOT_WHISKER_BAR; + } + else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975)) + symbol = BOXPLOT_WHISKER_RIGHT_END; + } + + if (reverse) + wattron (ctx->window, A_REVERSE); + mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol); + // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol); + if (reverse) + wattroff (ctx->window, A_REVERSE); + } + + free (ratios); + free (accumulated); + return (0); +} /* }}} int update_graph_boxplot */ + +static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */ + double latency, unsigned int sequence) +{ + int color = OPING_RED; + char const *symbol = "!"; + int symbolc = '!'; + + int x_max; + int x_pos; + + x_max = getmaxx (ctx->window); + x_pos = ((sequence - 1) % (x_max - 4)) + 2; + + if (latency >= 0.0) + { + double ratio; + + size_t symbols_num = hist_symbols_acs_num; + size_t colors_num = 1; + + size_t index_symbols; + size_t index_colors; + size_t intensity; + + /* latency is in milliseconds, opt_interval is in seconds. */ + ratio = (latency * 0.001) / opt_interval; + if (ratio > 1) { + ratio = 1.0; + } + + if (has_utf8 ()) + symbols_num = hist_symbols_utf8_num; + + if (has_colors () == TRUE) + colors_num = hist_colors_num; + + intensity = (size_t) (ratio * ((double) (symbols_num * colors_num))); + if (intensity >= (symbols_num * colors_num)) + intensity = (symbols_num * colors_num) - 1; + + index_symbols = intensity % symbols_num; + assert (index_symbols < symbols_num); + + index_colors = intensity / symbols_num; + assert (index_colors < colors_num); + + if (has_utf8()) + { + color = hist_colors_utf8[index_colors]; + symbol = hist_symbols_utf8[index_symbols]; + } + else + { + color = hist_colors_acs[index_colors]; + symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET; + } + } + else /* if (!(latency >= 0.0)) */ + wattron (ctx->window, A_BOLD); + + if (has_colors () == TRUE) + wattron (ctx->window, COLOR_PAIR(color)); + + if (has_utf8()) + mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol); + else + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc); + + if (has_colors () == TRUE) + wattroff (ctx->window, COLOR_PAIR(color)); + + /* Use negation here to handle NaN correctly. */ + if (!(latency >= 0.0)) + wattroff (ctx->window, A_BOLD); + + wprintw (ctx->window, " "); + return (0); +} /* }}} int update_graph_prettyping */ + +static int update_graph_histogram (ping_context_t *ctx) /* {{{ */ +{ + uint32_t *counters; + uint32_t *accumulated; + uint32_t num; + uint32_t max; + size_t i; + size_t x_max; + size_t x; + + size_t symbols_num = hist_symbols_acs_num; + + if (has_utf8 ()) + symbols_num = hist_symbols_utf8_num; + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 4) + return (EINVAL); + x_max -= 4; + + counters = calloc (x_max, sizeof (*counters)); + accumulated = calloc (x_max, sizeof (*accumulated)); + + /* Downsample */ + max = 0; + for (i = 0; i < ctx->latency_histogram_size; i++) + { + x = i * x_max / ctx->latency_histogram_size; + counters[x] += ctx->latency_histogram[i]; + accumulated[x] = counters[x]; + + if (max < counters[x]) + max = counters[x]; + } + + /* Sum */ + for (x = 1; x < x_max; x++) + accumulated[x] += accumulated[x - 1]; + num = accumulated[x_max - 1]; + + /* Calculate ratios */ + for (x = 0; x < x_max; x++) + { + double height = ((double) counters[x]) / ((double) max); + double ratio_this = ((double) accumulated[x]) / ((double) num); + double ratio_prev = 0.0; + size_t index; + int color = 0; + + index = (size_t) (height * ((double) symbols_num)); + if (index >= symbols_num) + index = symbols_num - 1; + + if (x > 0) + ratio_prev = ((double) accumulated[x - 1]) / ((double) num); + + if (has_colors () == TRUE) + { + if ((ratio_this <= 0.5) || ((ratio_prev < 0.5) && (ratio_this > 0.5))) + color = OPING_GREEN; + else if ((ratio_this <= 0.95) || ((ratio_prev < 0.95) && (ratio_this > 0.95))) + color = OPING_YELLOW; + else + color = OPING_RED; + + wattron (ctx->window, COLOR_PAIR(color)); + } + + if (counters[x] == 0) + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' '); + else if (has_utf8 ()) + mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, + hist_symbols_utf8[index]); + else + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, + hist_symbols_acs[index] | A_ALTCHARSET); + + if (has_colors () == TRUE) + wattroff (ctx->window, COLOR_PAIR(color)); + + } + + free (accumulated); + return (0); +} /* }}} int update_graph_histogram */ + static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */ { double latency = -1.0; size_t buffer_len = sizeof (latency); - int maxx; - getmaxyx(ctx->window, maxx, maxx); ping_iterator_get_info (iter, PING_INFO_LATENCY, &latency, &buffer_len); @@ -643,65 +1097,30 @@ static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) { double average; double deviation; + double percentile; average = context_get_average (ctx); deviation = context_get_stddev (ctx); - + percentile = context_get_percentile (ctx, opt_percentile); + mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2, - "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms", + "rtt min/avg/%.0f%%/max/sdev = " + "%.3f/%.3f/%.0f/%.3f/%.3f ms\n", + opt_percentile, ctx->latency_min, average, + percentile, ctx->latency_max, deviation); } - if (latency > 0.0) - { - if (has_colors () == TRUE) - { - int color = OPING_GREEN_HIST; - float ratio = 0; - int index = 0; - - ratio = latency / PING_DEF_TTL; - if (ratio > 1) { - ratio = 1.0; - } - index = (int) ((ratio * BARS_LEN * 3) -1); /* 3 colors */ - if (index >= BARS_LEN) { - color = OPING_YELLOW_HIST; - } - if (index >= 2*BARS_LEN) { - color = OPING_RED_HIST; - } - /* HOST_PRINTF ("%%r%f-ia%d-", ratio, index); */ - index = index % BARS_LEN; - /* HOST_PRINTF ("im%d-", index); */ - if (index < 0) { - index = 0; /* safety check */ - } - if (index >= BARS_LEN) { - index = BARS_LEN - 1; /* safety check */ - } - wattron (ctx->window, COLOR_PAIR(color)); - mvwprintw (ctx->window, - /* y = */ 3, - /* x = */ (1 + sequence) % maxx, - bars[index]); - wattroff (ctx->window, COLOR_PAIR(color)); - } - else - { - } - } - else { - wattron (ctx->window, COLOR_PAIR(OPING_RED) | A_BOLD); - mvwprintw (ctx->window, - /* y = */ 3, - /* x = */ (1 + sequence) % maxx, - "!"); - wattroff (ctx->window, COLOR_PAIR(OPING_RED) | A_BOLD); - } + if (opt_show_graph == 1) + update_graph_prettyping (ctx, latency, sequence); + else if (opt_show_graph == 2) + update_graph_boxplot (ctx); + else if (opt_show_graph == 3) + update_graph_histogram (ctx); + wrefresh (ctx->window); return (0); @@ -713,12 +1132,13 @@ static int on_resize (pingobj_t *ping) /* {{{ */ int width = 0; int height = 0; int main_win_height; + int box_height = (opt_show_graph == 0) ? 4 : 5; getmaxyx (stdscr, height, width); if ((height < 1) || (width < 1)) return (EINVAL); - main_win_height = height - (5 * host_num); + main_win_height = height - (box_height * host_num); wresize (main_win, main_win_height, /* width = */ width); /* Allow scrolling */ scrollok (main_win, TRUE); @@ -742,9 +1162,9 @@ static int on_resize (pingobj_t *ping) /* {{{ */ delwin (context->window); context->window = NULL; } - context->window = newwin (/* height = */ 5, + context->window = newwin (/* height = */ box_height, /* width = */ width, - /* y = */ main_win_height + (5 * context->index), + /* y = */ main_win_height + (box_height * context->index), /* x = */ 0); } @@ -776,6 +1196,7 @@ static int pre_loop_hook (pingobj_t *ping) /* {{{ */ int width = 0; int height = 0; int main_win_height; + int box_height = (opt_show_graph == 0) ? 4 : 5; initscr (); cbreak (); @@ -797,7 +1218,7 @@ static int pre_loop_hook (pingobj_t *ping) /* {{{ */ init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW); } - main_win_height = height - (5 * host_num); + main_win_height = height - (box_height * host_num); main_win = newwin (/* height = */ main_win_height, /* width = */ width, /* y = */ 0, /* x = */ 0); @@ -824,9 +1245,9 @@ static int pre_loop_hook (pingobj_t *ping) /* {{{ */ delwin (context->window); context->window = NULL; } - context->window = newwin (/* height = */ 5, + context->window = newwin (/* height = */ box_height, /* width = */ width, - /* y = */ main_win_height + (5 * context->index), + /* y = */ main_win_height + (box_height * context->index), /* x = */ 0); } @@ -892,6 +1313,30 @@ static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ } /* }}} int post_sleep_hook */ #endif +static void update_context (ping_context_t *context, double latency) /* {{{ */ +{ + size_t bucket; + + context->req_rcvd++; + context->latency_total += latency; + context->latency_total_square += (latency * latency); + + if ((context->latency_max < 0.0) || (context->latency_max < latency)) + context->latency_max = latency; + if ((context->latency_min < 0.0) || (context->latency_min > latency)) + context->latency_min = latency; + + if (context->latency_histogram == NULL) + return; + + /* latency is in ms, opt_interval is in s. */ + bucket = (size_t) ((latency * (context->latency_histogram_size - 1)) + / (1000.0 * opt_interval)); + if (bucket >= context->latency_histogram_size) + bucket = context->latency_histogram_size - 1; + context->latency_histogram[bucket]++; +} /* }}} void update_context */ + static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ __attribute__((unused)) int index) { @@ -939,14 +1384,7 @@ static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ context->req_sent++; if (latency > 0.0) { - context->req_rcvd++; - context->latency_total += latency; - context->latency_total_square += (latency * latency); - - if ((context->latency_max < 0.0) || (context->latency_max < latency)) - context->latency_max = latency; - if ((context->latency_min < 0.0) || (context->latency_min > latency)) - context->latency_min = latency; + update_context (context, latency); #if USE_NCURSES if (has_colors () == TRUE) @@ -1024,9 +1462,13 @@ static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ #endif } /* }}} void update_host_hook */ +/* Prints statistics for each host, cleans up the contexts and returns the + * number of hosts which failed to return more than the fraction + * opt_exit_status_threshold of pings. */ static int post_loop_hook (pingobj_t *ping) /* {{{ */ { pingobj_iter_t *iter; + int failure_count = 0; #if USE_NCURSES endwin (); @@ -1046,17 +1488,29 @@ static int post_loop_hook (pingobj_t *ping) /* {{{ */ context_get_packet_loss (context), context->latency_total); + { + double pct_failed = 1.0 - (((double) context->req_rcvd) + / ((double) context->req_sent)); + if (pct_failed > opt_exit_status_threshold) + failure_count++; + } + if (context->req_rcvd != 0) { double average; double deviation; + double percentile; average = context_get_average (context); deviation = context_get_stddev (context); + percentile = context_get_percentile (context, opt_percentile); - printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n", + printf ("rtt min/avg/%.0f%%/max/sdev = " + "%.3f/%.3f/%.0f/%.3f/%.3f ms\n", + opt_percentile, context->latency_min, average, + percentile, context->latency_max, deviation); } @@ -1065,7 +1519,7 @@ static int post_loop_hook (pingobj_t *ping) /* {{{ */ context_destroy (context); } - return (0); + return (failure_count); } /* }}} int post_loop_hook */ int main (int argc, char **argv) /* {{{ */ @@ -1304,7 +1758,12 @@ int main (int argc, char **argv) /* {{{ */ return (1); } - if (ping_send (ping) < 0) + status = ping_send (ping); + if (status == -EINTR) + { + continue; + } + else if (status < 0) { fprintf (stderr, "ping_send failed: %s\n", ping_get_error (ping)); @@ -1337,14 +1796,13 @@ int main (int argc, char **argv) /* {{{ */ /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */ while ((status = nanosleep (&ts_wait, &ts_wait)) != 0) { - if (errno != EINTR) + if (errno == EINTR) { - perror ("nanosleep"); - break; + continue; } - else if (opt_count == 0) + else { - /* sigint */ + perror ("nanosleep"); break; } } @@ -1355,11 +1813,19 @@ int main (int argc, char **argv) /* {{{ */ opt_count--; } /* while (opt_count != 0) */ - post_loop_hook (ping); + /* Returns the number of failed hosts according to -Z. */ + status = post_loop_hook (ping); ping_destroy (ping); - return (0); + if (status == 0) + exit (EXIT_SUCCESS); + else + { + if (status > 255) + status = 255; + exit (status); + } } /* }}} int main */ /* vim: set fdm=marker : */