blob: 8dd112d6c989cfcdd768b3e8acfb49c271e4fdb1 [file] [log] [blame]
/*
* Copyright (C) 2012 Fusion-io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 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
*
* Parts of this file were imported from Jens Axboe's blktrace sources (also GPL)
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <inttypes.h>
#include <string.h>
#include <asm/types.h>
#include <errno.h>
#include <sys/mman.h>
#include <time.h>
#include <math.h>
#include "plot.h"
static int io_graph_scale = 8;
static int graph_width = 700;
static int graph_height = 250;
static int graph_circle_extra = 30;
static int graph_inner_x_margin = 2;
static int graph_inner_y_margin = 2;
static int graph_tick_len = 5;
static int graph_left_pad = 120;
static int tick_label_pad = 16;
static int tick_font_size = 15;
static char *font_family = "sans-serif";
/* this is the title for the whole page */
static int plot_title_height = 50;
static int plot_title_font_size = 25;
/* this is the label at the top of each plot */
static int plot_label_height = 60;
static int plot_label_font_size = 20;
/* label for each axis is slightly smaller */
static int axis_label_font_size = 16;
int legend_x_off = 45;
int legend_y_off = -10;
int legend_font_size = 15;
int legend_width = 80;
static int rolling_avg_secs = 0;
static int line_len = 1024;
static char line[1024];
static int final_height = 0;
static int final_width = 0;
static char *colors[] = {
"blue", "darkgreen",
"red",
"darkviolet",
"orange",
"aqua",
"brown", "#00FF00",
"yellow", "coral",
"black", "darkred",
"fuchsia", "crimson",
NULL };
extern unsigned int longest_proc_name;
char *pick_color(void)
{
static int color_index;
char *ret = colors[color_index];
if (!ret) {
color_index = 0;
ret = colors[color_index];
}
color_index++;
return ret;
}
char *pick_fio_color(void)
{
static int fio_color_index;
char *ret = colors[fio_color_index];
if (!ret) {
fio_color_index = 0;
ret = colors[fio_color_index];
}
fio_color_index += 2;
return ret;
}
static int cpu_color_index;
char *pick_cpu_color(void)
{
char *ret = colors[cpu_color_index];
if (!ret) {
cpu_color_index = 0;
ret = colors[cpu_color_index];
}
cpu_color_index++;
return ret;
}
void reset_cpu_color(void)
{
cpu_color_index = 0;
}
struct graph_line_data *alloc_line_data(unsigned int min_seconds,
unsigned int max_seconds,
unsigned int stop_seconds)
{
int size = sizeof(struct graph_line_data) + (stop_seconds + 1) * sizeof(struct graph_line_pair);
struct graph_line_data *gld;
gld = calloc(1, size);
if (!gld) {
fprintf(stderr, "Unable to allocate memory for graph data\n");
exit(1);
}
gld->min_seconds = min_seconds;
gld->max_seconds = max_seconds;
gld->stop_seconds = stop_seconds;
return gld;
}
struct graph_dot_data *alloc_dot_data(unsigned int min_seconds,
unsigned int max_seconds,
u64 min_offset, u64 max_offset,
unsigned int stop_seconds,
char *color, char *label)
{
int size;
int arr_size;
int rows = graph_height * io_graph_scale;
int cols = graph_width;
struct graph_dot_data *gdd;
size = sizeof(struct graph_dot_data);
/* the number of bits */
arr_size = (rows + 1) * cols;
/* the number of bytes */
arr_size = (arr_size + 7) / 8;
gdd = calloc(1, size + arr_size);
if (!gdd) {
fprintf(stderr, "Unable to allocate memory for graph data\n");
exit(1);
}
gdd->min_seconds = min_seconds;
gdd->max_seconds = max_seconds;
gdd->stop_seconds = stop_seconds;
gdd->rows = rows;
gdd->cols = cols;
gdd->min_offset = min_offset;
gdd->max_offset = max_offset;
gdd->color = color;
gdd->label = label;
if (strlen(label) > longest_proc_name)
longest_proc_name = strlen(label);
return gdd;
}
void set_gdd_bit(struct graph_dot_data *gdd, u64 offset, double bytes, double time)
{
double bytes_per_row = (double)(gdd->max_offset - gdd->min_offset + 1) / gdd->rows;
double secs_per_col = (double)(gdd->max_seconds - gdd->min_seconds) / gdd->cols;
double col;
double row;
int col_int;
int row_int;
int bit_index;
int arr_index;
int bit_mod;
double mod = bytes_per_row;
if (offset > gdd->max_offset || offset < gdd->min_offset)
return;
time = time / 1000000000.0;
if (time < gdd->min_seconds || time > gdd->max_seconds)
return;
gdd->total_ios++;
while (bytes > 0 && offset <= gdd->max_offset) {
row = (double)(offset - gdd->min_offset) / bytes_per_row;
col = (time - gdd->min_seconds) / secs_per_col;
col_int = floor(col);
row_int = floor(row);
bit_index = row_int * gdd->cols + col_int;
arr_index = bit_index / 8;
bit_mod = bit_index % 8;
gdd->data[arr_index] |= 1 << bit_mod;
offset += mod;
bytes -= mod;
}
}
static double rolling_avg(struct graph_line_pair *data, int index, int distance)
{
double sum = 0;
int start;
if (distance < 0)
distance = 1;
if (distance > index) {
start = 0;
} else {
start = index - distance;
}
distance = 0;
while (start <= index) {
double avg;
if (data[start].count)
avg = ((double)data[start].sum) / data[start].count;
else
avg= 0;
sum += avg;
distance++;
start++;
}
return sum / distance;
}
void write_svg_header(int fd)
{
char *spaces = " \n";
char *header = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n";
char *filter1 ="<filter id=\"shadow\">\n "
"<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"4\" dy=\"4\" />\n "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *filter2 ="<filter id=\"textshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
"<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"1\" dy=\"1\" />\n "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"1.5\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *filter3 ="<filter id=\"labelshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
"<feOffset result=\"offOut\" in=\"SourceGraphic\" dx=\"3\" dy=\"3\" />\n "
"<feColorMatrix result=\"matrixOut\" in=\"offOut\" type=\"matrix\" "
"values=\"0.2 0 0 0 0 0 0.2 0 0 0 0 0 0.2 0 0 0 0 0 1 0\" /> "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *defs_start = "<defs>\n";
char *defs_close = "</defs>\n";
final_width = 0;
final_height = 0;
write(fd, header, strlen(header));
/* write a bunch of spaces so we can stuff in the width and height later */
write(fd, spaces, strlen(spaces));
write(fd, spaces, strlen(spaces));
write(fd, spaces, strlen(spaces));
write(fd, defs_start, strlen(defs_start));
write(fd, filter1, strlen(filter1));
write(fd, filter2, strlen(filter2));
write(fd, filter3, strlen(filter3));
write(fd, defs_close, strlen(defs_close));
}
/* svg y offset for the traditional 0,0 (bottom left corner) of the plot */
static int axis_y(void)
{
return plot_label_height + graph_height + graph_inner_y_margin;
}
/* this gives you the correct pixel for a given offset from the bottom left y axis */
static double axis_y_off_double(double y)
{
return plot_label_height + graph_height - y;
}
static int axis_y_off(int y)
{
return axis_y_off_double(y);
}
/* svg x axis offset from 0 */
static int axis_x(void)
{
return graph_left_pad;
}
/* the correct pixel for a given X offset */
static double axis_x_off_double(double x)
{
return graph_left_pad + graph_inner_x_margin + x;
}
static int axis_x_off(int x)
{
return (int)axis_x_off_double(x);
}
/*
* this draws a backing rectangle for the plot and it
* also creates a new svg element so our offsets can
* be relative to this one plot.
*/
void setup_axis(struct plot *plot)
{
int ret;
int len;
int fd = plot->fd;
int bump_height = tick_font_size * 3 + axis_label_font_size;
int local_legend_width = legend_width;
if (plot->no_legend)
local_legend_width = 0;
plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + local_legend_width;
plot->total_height = axis_y() + tick_label_pad + tick_font_size;
if (plot->add_xlabel)
plot->total_height += bump_height;
/* backing rect */
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset,
plot->start_y_offset, plot->total_width + 40,
plot->total_height + 20);
len = strlen(line);
write(fd, line, len);
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"filter=\"url(#shadow)\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset + 15,
plot->start_y_offset, plot->total_width, plot->total_height);
len = strlen(line);
write(fd, line, len);
plot->total_height += 20;
plot->total_width += 20;
if (plot->total_height + plot->start_y_offset > final_height)
final_height = plot->total_height + plot->start_y_offset;
if (plot->start_x_offset + plot->total_width + 40 > final_width)
final_width = plot->start_x_offset + plot->total_width + 40;
/* create an svg object for all our coords to be relative against */
snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
write(fd, line, strlen(line));
snprintf(line, 1024, "<path d=\"M%d %d h %d V %d H %d Z\" stroke=\"black\" stroke-width=\"2\" fill=\"none\"/>\n",
axis_x(), axis_y(),
graph_width + graph_inner_x_margin * 2, axis_y_off(graph_height) - graph_inner_y_margin,
axis_x());
len = strlen(line);
ret = write(fd, line, len);
if (ret != len) {
fprintf(stderr, "failed to write svg axis\n");
exit(1);
}
}
/*
* this draws a backing rectangle for the plot and it
* also creates a new svg element so our offsets can
* be relative to this one plot.
*/
void setup_axis_spindle(struct plot *plot)
{
int len;
int fd = plot->fd;
int bump_height = tick_font_size * 3 + axis_label_font_size;
legend_x_off = -60;
plot->total_width = axis_x_off(graph_width) + legend_width;
plot->total_height = axis_y() + tick_label_pad + tick_font_size;
if (plot->add_xlabel)
plot->total_height += bump_height;
/* backing rect */
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset,
plot->start_y_offset, plot->total_width + 10,
plot->total_height + 20);
len = strlen(line);
write(fd, line, len);
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"filter=\"url(#shadow)\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset + 15,
plot->start_y_offset, plot->total_width - 30,
plot->total_height);
len = strlen(line);
write(fd, line, len);
plot->total_height += 20;
if (plot->total_height + plot->start_y_offset > final_height)
final_height = plot->total_height + plot->start_y_offset;
if (plot->start_x_offset + plot->total_width + 40 > final_width)
final_width = plot->start_x_offset + plot->total_width + 40;
/* create an svg object for all our coords to be relative against */
snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
write(fd, line, strlen(line));
}
/* draw a plot title. This should be done only once,
* and it bumps the plot width/height numbers by
* what it draws.
*
* Call this before setting up the first axis
*/
void set_plot_title(struct plot *plot, char *title)
{
int len;
int fd = plot->fd;
plot->total_height = plot_title_height;
plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + legend_width;
/* backing rect */
snprintf(line, line_len, "<rect x=\"0\" y=\"%d\" width=\"%d\" height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_y_offset, plot->total_width + 40, plot_title_height + 20);
len = strlen(line);
write(fd, line, len);
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"font-weight=\"bold\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
axis_x_off(graph_width / 2),
plot->start_y_offset + plot_title_height / 2,
font_family, plot_title_font_size, "middle", title);
plot->start_y_offset += plot_title_height;
len = strlen(line);
write(fd, line, len);
}
#define TICK_MINI_STEPS 3
static double find_step(double first, double last, int num_ticks)
{
int mini_step[TICK_MINI_STEPS] = { 1, 2, 5 };
int cur_mini_step = 0;
double step = (last - first) / num_ticks;
double log10 = log(10);
/* Round to power of 10 */
step = exp(floor(log(step) / log10) * log10);
/* Scale down step to provide enough ticks */
while (cur_mini_step < TICK_MINI_STEPS
&& (last - first) / (step * mini_step[cur_mini_step]) > num_ticks)
cur_mini_step++;
if (cur_mini_step > 0)
step *= mini_step[cur_mini_step - 1];
return step;
}
/*
* create evenly spread out ticks along the xaxis. if tick only is set
* this just makes the ticks, otherwise it labels each tick as it goes
*/
void set_xticks(struct plot *plot, int num_ticks, int first, int last)
{
int pixels_per_tick;
double step;
int i;
int tick_y = axis_y_off(graph_tick_len) + graph_inner_y_margin;
int tick_x = axis_x();
int tick_only = plot->add_xlabel == 0;
int text_y = axis_y() + tick_label_pad;
char *middle = "middle";
char *start = "start";
step = find_step(first, last, num_ticks);
/*
* We don't want last two ticks to be too close together so subtract
* 20% of the step from the interval
*/
num_ticks = (double)(last - first - step) / step + 1;
pixels_per_tick = graph_width * step / (double)(last - first);
for (i = 0; i < num_ticks; i++) {
char *anchor;
if (i != 0) {
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"2\" height=\"%d\" style=\"stroke:none;fill:black;\"/>\n",
tick_x, tick_y, graph_tick_len);
write(plot->fd, line, strlen(line));
anchor = middle;
} else {
anchor = start;
}
if (!tick_only) {
if (step >= 1)
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d</text>\n",
tick_x, text_y, font_family, tick_font_size, anchor,
(int)(first + step * i));
else
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%.2f</text>\n",
tick_x, text_y, font_family, tick_font_size, anchor,
first + step * i);
write(plot->fd, line, strlen(line));
}
tick_x += pixels_per_tick;
}
if (!tick_only) {
if (step >= 1)
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: middle\">%d</text>\n",
axis_x_off(graph_width - 2),
text_y, font_family, tick_font_size, last);
else
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: middle\">%.2f</text>\n",
axis_x_off(graph_width - 2),
text_y, font_family, tick_font_size, (double)last);
write(plot->fd, line, strlen(line));
}
}
void set_ylabel(struct plot *plot, char *label)
{
int len;
int fd = plot->fd;
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
"transform=\"rotate(-90 %d %d)\" font-weight=\"bold\" "
"font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
graph_left_pad / 2 - axis_label_font_size,
axis_y_off(graph_height / 2),
font_family,
graph_left_pad / 2 - axis_label_font_size,
(int)axis_y_off(graph_height / 2),
axis_label_font_size, "middle", label);
len = strlen(line);
write(fd, line, len);
}
void set_xlabel(struct plot *plot, char *label)
{
int len;
int fd = plot->fd;
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
"font-weight=\"bold\" "
"font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
axis_x_off(graph_width / 2),
axis_y() + tick_font_size * 3 + axis_label_font_size / 2,
font_family,
axis_label_font_size, "middle", label);
len = strlen(line);
write(fd, line, len);
}
/*
* create evenly spread out ticks along the y axis.
* The ticks are labeled as it goes
*/
void set_yticks(struct plot *plot, int num_ticks, int first, int last, char *units)
{
int pixels_per_tick = graph_height / num_ticks;
int step = (last - first) / num_ticks;
int i;
int tick_y = 0;
int text_x = axis_x() - 6;
int tick_x = axis_x();
char *anchor = "end";
for (i = 0; i < num_ticks; i++) {
if (i != 0) {
snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
"style=\"stroke:lightgray;stroke-width:2;stroke-dasharray:9,12;\"/>\n",
tick_x, axis_y_off(tick_y),
axis_x_off(graph_width), axis_y_off(tick_y));
write(plot->fd, line, strlen(line));
}
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
text_x,
axis_y_off(tick_y - tick_font_size / 2),
font_family, tick_font_size, anchor, first + step * i, units);
write(plot->fd, line, strlen(line));
tick_y += pixels_per_tick;
}
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
text_x, axis_y_off(graph_height), font_family, tick_font_size, anchor, last, units);
write(plot->fd, line, strlen(line));
}
void set_plot_label(struct plot *plot, char *label)
{
int len;
int fd = plot->fd;
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
"font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
axis_x() + graph_width / 2,
plot_label_height / 2,
font_family, plot_label_font_size, "middle", label);
len = strlen(line);
write(fd, line, len);
}
static void close_svg(int fd)
{
char *close_line = "</svg>\n";
write(fd, close_line, strlen(close_line));
}
int close_plot(struct plot *plot)
{
close_svg(plot->fd);
if (plot->direction == PLOT_DOWN)
plot->start_y_offset += plot->total_height;
else if (plot->direction == PLOT_ACROSS)
plot->start_x_offset += plot->total_width;
return 0;
}
struct plot *alloc_plot(void)
{
struct plot *plot;
plot = calloc(1, sizeof(*plot));
if (!plot) {
fprintf(stderr, "Unable to allocate memory %s\n", strerror(errno));
exit(1);
}
plot->fd = 0;
return plot;
}
int close_plot_file(struct plot *plot)
{
int ret;
ret = lseek(plot->fd, 0, SEEK_SET);
if (ret == (off_t)-1) {
perror("seek");
exit(1);
}
final_width = ((final_width + 1) / 2) * 2;
final_height = ((final_height + 1) / 2) * 2;
snprintf(line, line_len, "<svg xmlns=\"http://www.w3.org/2000/svg\" "
"width=\"%d\" height=\"%d\">\n",
final_width, final_height);
write(plot->fd, line, strlen(line));
snprintf(line, line_len, "<rect x=\"0\" y=\"0\" width=\"%d\" "
"height=\"%d\" fill=\"white\"/>\n", final_width, final_height);
write(plot->fd, line, strlen(line));
close(plot->fd);
plot->fd = 0;
return 0;
}
void set_plot_output(struct plot *plot, char *filename)
{
int fd;
if (plot->fd)
close_plot_file(plot);
fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
if (fd < 0) {
fprintf(stderr, "Unable to open output file %s err %s\n", filename, strerror(errno));
exit(1);
}
plot->fd = fd;
plot->start_y_offset = plot->start_x_offset = 0;
write_svg_header(fd);
}
char *byte_unit_names[] = { "", "K", "M", "G", "T", "P", "E", "Z", "Y", "unobtainium" };
int MAX_BYTE_UNIT_SCALE = 9;
char *time_unit_names[] = { "n", "u", "m", "s" };
int MAX_TIME_UNIT_SCALE = 3;
void scale_line_graph_bytes(u64 *max, char **units, u64 factor)
{
int scale = 0;
u64 val = *max;
u64 div = 1;
while (val > factor * 64) {
val /= factor;
scale++;
div *= factor;
}
*units = byte_unit_names[scale];
if (scale == 0)
return;
if (scale > MAX_BYTE_UNIT_SCALE)
scale = MAX_BYTE_UNIT_SCALE;
*max /= div;
}
void scale_line_graph_time(u64 *max, char **units)
{
int scale = 0;
u64 val = *max;
u64 div = 1;
while (val > 1000 * 10) {
val /= 1000;
scale++;
div *= 1000;
if (scale == MAX_TIME_UNIT_SCALE)
break;
}
*units = time_unit_names[scale];
if (scale == 0)
return;
*max /= div;
}
int svg_line_graph(struct plot *plot, struct graph_line_data *gld, char *color, int thresh1, int thresh2)
{
unsigned int i;
double val;
double avg;
int rolling;
int fd = plot->fd;
char *start = "<path d=\"";
double yscale = ((double)gld->max) / graph_height;
double xscale = (double)(gld->max_seconds - gld->min_seconds - 1) / graph_width;
char c = 'M';
double x;
int printed_header = 0;
int printed_lines = 0;
if (thresh1 && thresh2)
rolling = 0;
else if (rolling_avg_secs)
rolling = rolling_avg_secs;
else
rolling = (gld->stop_seconds - gld->min_seconds) / 25;
for (i = gld->min_seconds; i < gld->stop_seconds; i++) {
avg = rolling_avg(gld->data, i, rolling);
if (yscale == 0)
val = 0;
else
val = avg / yscale;
if (val > graph_height)
val = graph_height;
if (val < 0)
val = 0;
x = (double)(i - gld->min_seconds) / xscale;
if (!thresh1 && !thresh2) {
if (!printed_header) {
write(fd, start, strlen(start));
printed_header = 1;
}
/* in full line mode, everything in the graph is connected */
snprintf(line, line_len, "%c %d %d ", c, axis_x_off(x), axis_y_off(val));
c = 'L';
write(fd, line, strlen(line));
printed_lines = 1;
} else if (avg > thresh1 || avg > thresh2) {
int len = 10;
if (!printed_header) {
write(fd, start, strlen(start));
printed_header = 1;
}
/* otherwise, we just print a bar up there to show this one data point */
if (i >= gld->stop_seconds - 2)
len = -10;
/*
* we don't use the rolling averages here to show high
* points in the data
*/
snprintf(line, line_len, "M %d %d h %d ", axis_x_off(x),
axis_y_off(val), len);
write(fd, line, strlen(line));
printed_lines = 1;
}
}
if (printed_lines) {
snprintf(line, line_len, "\" fill=\"none\" stroke=\"%s\" stroke-width=\"2\"/>\n", color);
write(fd, line, strlen(line));
}
if (plot->timeline)
svg_write_time_line(plot, plot->timeline);
return 0;
}
void svg_write_time_line(struct plot *plot, int col)
{
snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
"style=\"stroke:black;stroke-width:2;\"/>\n",
axis_x_off(col), axis_y_off(0),
axis_x_off(col), axis_y_off(graph_height));
write(plot->fd, line, strlen(line));
}
static int svg_add_io(int fd, double row, double col, double width, double height, char *color)
{
float rx = 0;
snprintf(line, line_len, "<rect x=\"%.2f\" y=\"%.2f\" width=\"%.1f\" height=\"%.1f\" "
"rx=\"%.2f\" style=\"stroke:none;fill:%s;stroke-width:0\"/>\n",
axis_x_off_double(col), axis_y_off_double(row), width, height, rx, color);
return write(fd, line, strlen(line));
}
int svg_io_graph_movie_array(struct plot *plot, struct pid_plot_history *pph)
{
double cell_index;
double movie_row;
double movie_col;
int i;
for (i = 0; i < pph->num_used; i++) {
cell_index = pph->history[i];
movie_row = floor(cell_index / graph_width);
movie_col = cell_index - movie_row * graph_width;
svg_add_io(plot->fd, movie_row, movie_col, 4, 4, pph->color);
}
return 0;
}
static float spindle_steps = 0;
void rewind_spindle_steps(int num)
{
spindle_steps -= num * 0.01;
}
int svg_io_graph_movie_array_spindle(struct plot *plot, struct pid_plot_history *pph)
{
double cell_index;
int i;
int num_circles = 0;
double cells_per_circle;
double circle_num;
double degrees_per_cell;
double rot;
double center_x;
double center_y;
double graph_width_extra = graph_width + graph_circle_extra;
double graph_height_extra = graph_height + graph_circle_extra;
double radius;;
if (graph_width_extra > graph_height_extra)
graph_width_extra = graph_height_extra;
if (graph_width_extra < graph_height_extra)
graph_height_extra = graph_width_extra;
radius = graph_width_extra;
center_x = axis_x_off_double(graph_width_extra / 2);
center_y = axis_y_off_double(graph_height_extra / 2);
snprintf(line, line_len, "<g transform=\"rotate(%.4f, %.2f, %.2f)\"> "
"<circle cx=\"%.2f\" cy=\"%.2f\" "
"stroke=\"black\" stroke-width=\"6\" "
"r=\"%.2f\" fill=\"none\"/>\n",
spindle_steps * 1.2, center_x, center_y, center_x, center_y, graph_width_extra / 2);
write(plot->fd, line, strlen(line));
snprintf(line, line_len, "<circle cx=\"%.2f\" cy=\"%.2f\" "
"stroke=\"none\" fill=\"red\" r=\"%.2f\"/>\n</g>\n",
axis_x_off_double(graph_width_extra), center_y, 4.5);
write(plot->fd, line, strlen(line));
spindle_steps += 0.01;
radius = floor(radius / 2);
num_circles = radius / 4 - 3;
cells_per_circle = pph->history_max / num_circles;
degrees_per_cell = 360 / cells_per_circle;
for (i = 0; i < pph->num_used; i++) {
cell_index = pph->history[i];
circle_num = floor(cell_index / cells_per_circle);
rot = cell_index - circle_num * cells_per_circle;
circle_num = num_circles - circle_num;
radius = circle_num * 4;
rot = rot * degrees_per_cell;
rot -= spindle_steps;
snprintf(line, line_len, "<path transform=\"rotate(%.4f, %.2f, %.2f)\" "
"d=\"M %.2f %.2f a %.2f %.2f 0 0 1 0 5\" "
"stroke=\"%s\" stroke-width=\"4\"/>\n",
-rot, center_x, center_y,
axis_x_off_double(graph_width_extra / 2 + radius) + 8, center_y,
radius, radius, pph->color);
write(plot->fd, line, strlen(line));
}
return 0;
}
static int add_plot_history(struct pid_plot_history *pph, double val)
{
if (pph->num_used == pph->history_len) {
pph->history_len += 4096;
pph->history = realloc(pph->history,
pph->history_len * sizeof(double));
if (!pph->history) {
perror("Unable to allocate memory");
exit(1);
}
}
pph->history[pph->num_used++] = val;
return 0;
}
int svg_io_graph_movie(struct graph_dot_data *gdd, struct pid_plot_history *pph, int col)
{
int row = 0;
int arr_index;
unsigned char val;
int bit_index;
int bit_mod;
double blocks_per_row = (gdd->max_offset - gdd->min_offset + 1) / gdd->rows;
double movie_blocks_per_cell = (gdd->max_offset - gdd->min_offset + 1) / (graph_width * graph_height);
double cell_index;
int margin_orig = graph_inner_y_margin;
graph_inner_y_margin += 5;
pph->history_max = (gdd->max_offset - gdd->min_offset + 1) / movie_blocks_per_cell;
for (row = gdd->rows - 1; row >= 0; row--) {
bit_index = row * gdd->cols + col;
arr_index = bit_index / 8;
bit_mod = bit_index % 8;
if (arr_index < 0)
continue;
val = gdd->data[arr_index];
if (val & (1 << bit_mod)) {
/* in bytes, linear offset from the start of the drive */
cell_index = (double)row * blocks_per_row;
/* a cell number in the graph */
cell_index /= movie_blocks_per_cell;
add_plot_history(pph, cell_index);
}
}
graph_inner_y_margin = margin_orig;
return 0;
}
int svg_io_graph(struct plot *plot, struct graph_dot_data *gdd)
{
int fd = plot->fd;;
int col = 0;
int row = 0;
int arr_index;
unsigned char val;
int bit_index;
int bit_mod;
for (row = gdd->rows - 1; row >= 0; row--) {
for (col = 0; col < gdd->cols; col++) {
bit_index = row * gdd->cols + col;
arr_index = bit_index / 8;
bit_mod = bit_index % 8;
if (arr_index < 0)
continue;
val = gdd->data[arr_index];
if (val & (1 << bit_mod))
svg_add_io(fd, floor(row / io_graph_scale), col, 1.5, 1.5, gdd->color);
}
}
return 0;
}
void svg_alloc_legend(struct plot *plot, int num_lines)
{
char **lines = calloc(num_lines, sizeof(char *));
plot->legend_index = 0;
plot->legend_lines = lines;
plot->num_legend_lines = num_lines;
}
void svg_free_legend(struct plot *plot)
{
int i;
for (i = 0; i < plot->legend_index; i++)
free(plot->legend_lines[i]);
free(plot->legend_lines);
plot->legend_lines = NULL;
plot->legend_index = 0;
}
void svg_write_legend(struct plot *plot)
{
int legend_line_x = axis_x_off(graph_width) + legend_x_off;
int legend_line_y = axis_y_off(graph_height) + legend_y_off;
int i;
if (plot->legend_index == 0)
return;
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "
"fill=\"white\" filter=\"url(#shadow)\"/>\n",
legend_line_x - 15,
legend_line_y - 12,
legend_width,
plot->legend_index * legend_font_size + legend_font_size / 2 + 12);
write(plot->fd, line, strlen(line));
for (i = 0; i < plot->legend_index; i++) {
write(plot->fd, plot->legend_lines[i],
strlen(plot->legend_lines[i]));
free(plot->legend_lines[i]);
}
free(plot->legend_lines);
plot->legend_lines = NULL;
plot->legend_index = 0;
}
void svg_add_legend(struct plot *plot, char *text, char *extra, char *color)
{
int legend_line_x = axis_x_off(graph_width) + legend_x_off;
int legend_line_y = axis_y_off(graph_height) + legend_y_off;
if (!text && (!extra || strlen(extra) == 0))
return;
legend_line_y += plot->legend_index * legend_font_size + legend_font_size / 2;
snprintf(line, line_len, "<path d=\"M %d %d h 8\" stroke=\"%s\" stroke-width=\"8\" "
"filter=\"url(#labelshadow)\"/> "
"<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: left\">%s%s</text>\n",
legend_line_x, legend_line_y,
color, legend_line_x + 13,
legend_line_y + 4, font_family, legend_font_size,
text, extra);
plot->legend_lines[plot->legend_index++] = strdup(line);
}
void set_legend_width(int longest_str)
{
if (longest_str)
legend_width = longest_str * (legend_font_size * 3 / 4) + 25;
else
legend_width = 0;
}
void set_rolling_avg(int rolling)
{
rolling_avg_secs = rolling;
}
void set_io_graph_scale(int scale)
{
io_graph_scale = scale;
}
void set_graph_size(int width, int height)
{
graph_width = width;
graph_height = height;
}
void get_graph_size(int *width, int *height)
{
*width = graph_width;
*height = graph_height;
}
void set_graph_height(int h)
{
graph_height = h;
}
void set_graph_width(int w)
{
graph_width = w;
}