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9e066e23 CM |
1 | /* |
2 | * Copyright (C) 2012 Fusion-io | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | * | |
17 | * Parts of this file were imported from Jens Axboe's blktrace sources (also GPL) | |
18 | */ | |
19 | #include <sys/types.h> | |
20 | #include <sys/stat.h> | |
21 | #include <fcntl.h> | |
22 | #include <unistd.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <math.h> | |
26 | #include <inttypes.h> | |
27 | #include <string.h> | |
28 | #include <asm/types.h> | |
29 | #include <errno.h> | |
30 | #include <sys/mman.h> | |
31 | #include <time.h> | |
32 | #include <math.h> | |
33 | ||
34 | #include "plot.h" | |
35 | ||
ba758825 | 36 | static int io_graph_scale = 8; |
abf08f96 CM |
37 | static int graph_width = 700; |
38 | static int graph_height = 250; | |
39 | static int graph_circle_extra = 30; | |
ba758825 CM |
40 | static int graph_inner_x_margin = 2; |
41 | static int graph_inner_y_margin = 2; | |
9e066e23 CM |
42 | static int graph_tick_len = 5; |
43 | static int graph_left_pad = 120; | |
44 | static int tick_label_pad = 16; | |
45 | static int tick_font_size = 15; | |
46 | static char *font_family = "sans-serif"; | |
47 | ||
48 | /* this is the title for the whole page */ | |
49 | static int plot_title_height = 50; | |
50 | static int plot_title_font_size = 25; | |
51 | ||
52 | /* this is the label at the top of each plot */ | |
53 | static int plot_label_height = 60; | |
54 | static int plot_label_font_size = 20; | |
55 | ||
56 | /* label for each axis is slightly smaller */ | |
57 | static int axis_label_font_size = 16; | |
58 | ||
59 | int legend_x_off = 45; | |
60 | int legend_y_off = -10; | |
61 | int legend_font_size = 15; | |
62 | int legend_width = 80; | |
63 | ||
e199d546 CM |
64 | static int rolling_avg_secs = 0; |
65 | ||
9e066e23 CM |
66 | static int line_len = 1024; |
67 | static char line[1024]; | |
68 | ||
abf08f96 CM |
69 | static int final_height = 0; |
70 | static int final_width = 0; | |
71 | ||
9e066e23 CM |
72 | struct graph_line_data *alloc_line_data(int seconds, int stop_seconds) |
73 | { | |
74 | int size = sizeof(struct graph_line_data) + (stop_seconds + 1) * sizeof(struct graph_line_pair); | |
75 | struct graph_line_data *gld; | |
76 | ||
77 | gld = calloc(1, size); | |
78 | if (!gld) { | |
79 | fprintf(stderr, "Unable to allocate memory for graph data\n"); | |
80 | exit(1); | |
81 | } | |
82 | gld->seconds = seconds; | |
83 | gld->stop_seconds = stop_seconds; | |
84 | return gld; | |
85 | } | |
86 | ||
87 | void free_line_data(struct graph_line_data *gld) | |
88 | { | |
89 | free(gld->label); | |
90 | free(gld); | |
91 | } | |
92 | ||
93 | struct graph_dot_data *alloc_dot_data(int seconds, u64 max_offset, int stop_seconds) | |
94 | { | |
95 | int size; | |
96 | int arr_size; | |
ba758825 | 97 | int rows = graph_height * io_graph_scale; |
9e066e23 CM |
98 | int cols = graph_width; |
99 | struct graph_dot_data *gdd; | |
100 | ||
101 | size = sizeof(struct graph_dot_data); | |
102 | ||
103 | /* the number of bits */ | |
104 | arr_size = (rows + 1) * cols; | |
105 | ||
106 | /* the number of bytes */ | |
107 | arr_size /= 8; | |
108 | ||
109 | gdd = calloc(1, size + arr_size); | |
110 | if (!gdd) { | |
111 | fprintf(stderr, "Unable to allocate memory for graph data\n"); | |
112 | exit(1); | |
113 | } | |
114 | gdd->seconds = seconds; | |
115 | gdd->stop_seconds = stop_seconds; | |
116 | gdd->rows = rows; | |
117 | gdd->cols = cols; | |
118 | gdd->max_offset = max_offset; | |
119 | return gdd; | |
120 | } | |
121 | ||
122 | void free_dot_data(struct graph_dot_data *gdd) | |
123 | { | |
124 | free(gdd); | |
125 | } | |
126 | ||
ba758825 | 127 | void set_gdd_bit(struct graph_dot_data *gdd, u64 offset, double bytes, double time) |
9e066e23 CM |
128 | { |
129 | double bytes_per_row = (double)gdd->max_offset / gdd->rows; | |
ba758825 | 130 | |
9e066e23 CM |
131 | double secs_per_col = (double)gdd->seconds / gdd->cols; |
132 | double col; | |
133 | double row; | |
134 | int col_int; | |
135 | int row_int; | |
136 | int bit_index; | |
137 | int arr_index; | |
138 | int bit_mod; | |
ba758825 | 139 | double mod = bytes_per_row; |
9e066e23 CM |
140 | |
141 | if (offset > gdd->max_offset) | |
142 | return; | |
143 | ||
144 | gdd->total_ios++; | |
ba758825 | 145 | time = time / 1000000000.0; |
9e066e23 | 146 | while (bytes > 0) { |
9e066e23 CM |
147 | row = (double)offset / bytes_per_row; |
148 | col = time / secs_per_col; | |
149 | ||
150 | col_int = floor(col); | |
151 | row_int = floor(row); | |
9e066e23 CM |
152 | bit_index = row_int * gdd->cols + col_int; |
153 | arr_index = bit_index / 8; | |
154 | bit_mod = bit_index % 8; | |
155 | ||
156 | gdd->data[arr_index] |= 1 << bit_mod; | |
157 | offset += mod; | |
158 | bytes -= mod; | |
159 | } | |
160 | } | |
161 | ||
162 | void print_gdd(struct graph_dot_data *gdd) | |
163 | { | |
164 | int col = 0; | |
165 | int row = 0; | |
166 | int arr_index; | |
167 | u64 val; | |
168 | int bit_index; | |
169 | int bit_mod; | |
170 | ||
171 | for (row = gdd->rows - 1; row >= 0; row--) { | |
172 | for (col = 0; col < gdd->cols; col++) { | |
173 | bit_index = row * gdd->cols + col; | |
174 | arr_index = bit_index / sizeof(unsigned long); | |
175 | bit_mod = bit_index % sizeof(unsigned long); | |
176 | ||
177 | val = gdd->data[arr_index]; | |
178 | if (val & (1 << bit_mod)) | |
179 | printf("*"); | |
180 | else | |
181 | printf(" "); | |
182 | } | |
183 | printf("\n"); | |
184 | } | |
185 | } | |
186 | ||
187 | static double rolling_avg(struct graph_line_pair *data, int index, int distance) | |
188 | { | |
189 | double sum = 0; | |
190 | int start; | |
191 | ||
192 | if (distance < 0) | |
193 | distance = 1; | |
194 | if (distance > index) { | |
195 | start = 0; | |
196 | } else { | |
197 | start = index - distance; | |
198 | } | |
199 | distance = 0; | |
200 | while (start <= index) { | |
201 | double avg; | |
202 | ||
203 | if (data[start].count) | |
204 | avg = ((double)data[start].sum) / data[start].count; | |
205 | else | |
206 | avg= 0; | |
207 | ||
208 | sum += avg; | |
209 | distance++; | |
210 | start++; | |
211 | } | |
212 | return sum / distance; | |
213 | } | |
214 | ||
215 | void write_svg_header(int fd) | |
216 | { | |
abf08f96 CM |
217 | char *spaces = " \n"; |
218 | char *header = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n"; | |
9e066e23 CM |
219 | char *filter1 ="<filter id=\"shadow\">\n " |
220 | "<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"4\" dy=\"4\" />\n " | |
221 | "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n " | |
222 | "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n " | |
223 | "</filter>\n"; | |
224 | char *filter2 ="<filter id=\"textshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n " | |
225 | "<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"1\" dy=\"1\" />\n " | |
226 | "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"1.5\" />\n " | |
227 | "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n " | |
228 | "</filter>\n"; | |
229 | char *filter3 ="<filter id=\"labelshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n " | |
230 | "<feOffset result=\"offOut\" in=\"SourceGraphic\" dx=\"3\" dy=\"3\" />\n " | |
231 | "<feColorMatrix result=\"matrixOut\" in=\"offOut\" type=\"matrix\" " | |
232 | "values=\"0.2 0 0 0 0 0 0.2 0 0 0 0 0 0.2 0 0 0 0 0 1 0\" /> " | |
233 | "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n " | |
234 | "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n " | |
235 | "</filter>\n"; | |
236 | char *defs_start = "<defs>\n"; | |
237 | char *defs_close = "</defs>\n"; | |
abf08f96 CM |
238 | final_width = 0; |
239 | final_height = 0; | |
9e066e23 CM |
240 | |
241 | write(fd, header, strlen(header)); | |
abf08f96 CM |
242 | /* write a bunch of spaces so we can stuff in the width and height later */ |
243 | write(fd, spaces, strlen(spaces)); | |
8ed9516f CM |
244 | write(fd, spaces, strlen(spaces)); |
245 | write(fd, spaces, strlen(spaces)); | |
abf08f96 | 246 | |
9e066e23 CM |
247 | write(fd, defs_start, strlen(defs_start)); |
248 | write(fd, filter1, strlen(filter1)); | |
249 | write(fd, filter2, strlen(filter2)); | |
250 | write(fd, filter3, strlen(filter3)); | |
251 | write(fd, defs_close, strlen(defs_close)); | |
252 | } | |
253 | ||
254 | void write_drop_shadow(struct plot *plot) | |
255 | { | |
256 | snprintf(line, line_len, "<rect x=\"0\" y=\"%d\" width=\"%d\" height=\"%d\" fill=\"white\"/>\n", | |
257 | plot->start_y_offset, plot->total_width, 45); | |
258 | write(plot->fd, line, strlen(line)); | |
259 | ||
260 | snprintf(line, line_len, "<path d=\"M %d %d h %d v %d h %d t %d %d V %d H %d Z\" " | |
261 | "fill=\"white\" filter=\"url(#shadow)\"/>", | |
262 | 0, plot->start_y_offset, | |
263 | plot->total_width - graph_left_pad / 2, | |
264 | -plot->total_height, 24, 1, 1, | |
265 | plot->start_y_offset + 10, 0); | |
266 | write(plot->fd, line, strlen(line)); | |
267 | ||
268 | snprintf(line, line_len, "<path d=\"M %d %d H %d V %d h %d V %d H %d Z\" " | |
269 | "fill=\"white\"/>", | |
270 | 0, plot->start_y_offset - 15, /* start */ | |
271 | plot->total_width - graph_left_pad / 2 - 10, /* hline over */ | |
272 | plot->start_y_offset - plot->total_height, /* vline up */ | |
273 | 15, /*hline over */ | |
274 | plot->start_y_offset, /* vline back down */ | |
275 | 0); | |
276 | write(plot->fd, line, strlen(line)); | |
277 | ||
278 | plot->start_y_offset += 45; | |
279 | } | |
280 | ||
281 | /* svg y offset for the traditional 0,0 (bottom left corner) of the plot */ | |
282 | static int axis_y(void) | |
283 | { | |
ba758825 | 284 | return plot_label_height + graph_height + graph_inner_y_margin; |
9e066e23 CM |
285 | } |
286 | ||
287 | /* this gives you the correct pixel for a given offset from the bottom left y axis */ | |
ba758825 | 288 | static double axis_y_off_double(double y) |
9e066e23 CM |
289 | { |
290 | return plot_label_height + graph_height - y; | |
291 | } | |
292 | ||
ba758825 CM |
293 | static int axis_y_off(int y) |
294 | { | |
295 | return axis_y_off_double(y); | |
296 | } | |
297 | ||
9e066e23 CM |
298 | /* svg x axis offset from 0 */ |
299 | static int axis_x(void) | |
300 | { | |
301 | return graph_left_pad; | |
302 | } | |
303 | ||
304 | /* the correct pixel for a given X offset */ | |
ba758825 CM |
305 | static double axis_x_off_double(double x) |
306 | { | |
307 | return graph_left_pad + graph_inner_x_margin + x; | |
308 | } | |
309 | ||
9e066e23 CM |
310 | static int axis_x_off(int x) |
311 | { | |
ba758825 | 312 | return (int)axis_x_off_double(x); |
9e066e23 CM |
313 | } |
314 | ||
315 | /* | |
316 | * this draws a backing rectangle for the plot and it | |
317 | * also creates a new svg element so our offsets can | |
318 | * be relative to this one plot. | |
319 | */ | |
320 | void setup_axis(struct plot *plot) | |
321 | { | |
322 | int ret; | |
323 | int len; | |
324 | int fd = plot->fd; | |
325 | int bump_height = tick_font_size * 3 + axis_label_font_size; | |
8ed9516f | 326 | int local_legend_width = legend_width; |
9e066e23 | 327 | |
8ed9516f CM |
328 | if (plot->no_legend) |
329 | local_legend_width = 0; | |
330 | ||
cc3d54d5 | 331 | plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + local_legend_width; |
9e066e23 CM |
332 | plot->total_height = axis_y() + tick_label_pad + tick_font_size; |
333 | ||
334 | if (plot->add_xlabel) | |
335 | plot->total_height += bump_height; | |
336 | ||
337 | /* backing rect */ | |
8ed9516f | 338 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" " |
9e066e23 | 339 | "height=\"%d\" fill=\"white\" stroke=\"none\"/>", |
8ed9516f | 340 | plot->start_x_offset, |
9e066e23 CM |
341 | plot->start_y_offset, plot->total_width + 40, |
342 | plot->total_height + 20); | |
343 | len = strlen(line); | |
344 | write(fd, line, len); | |
abf08f96 | 345 | |
8ed9516f | 346 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" " |
9e066e23 CM |
347 | "filter=\"url(#shadow)\" " |
348 | "height=\"%d\" fill=\"white\" stroke=\"none\"/>", | |
8ed9516f | 349 | plot->start_x_offset + 15, |
9e066e23 CM |
350 | plot->start_y_offset, plot->total_width, plot->total_height); |
351 | len = strlen(line); | |
352 | write(fd, line, len); | |
353 | plot->total_height += 20; | |
8ed9516f | 354 | plot->total_width += 20; |
9e066e23 | 355 | |
abf08f96 CM |
356 | if (plot->total_height + plot->start_y_offset > final_height) |
357 | final_height = plot->total_height + plot->start_y_offset; | |
8ed9516f CM |
358 | if (plot->start_x_offset + plot->total_width + 40 > final_width) |
359 | final_width = plot->start_x_offset + plot->total_width + 40; | |
9e066e23 CM |
360 | |
361 | /* create an svg object for all our coords to be relative against */ | |
abf08f96 | 362 | snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset); |
9e066e23 CM |
363 | write(fd, line, strlen(line)); |
364 | ||
365 | snprintf(line, 1024, "<path d=\"M%d %d h %d V %d H %d Z\" stroke=\"black\" stroke-width=\"2\" fill=\"none\"/>\n", | |
366 | axis_x(), axis_y(), | |
ba758825 | 367 | graph_width + graph_inner_x_margin * 2, axis_y_off(graph_height) - graph_inner_y_margin, |
9e066e23 CM |
368 | axis_x()); |
369 | len = strlen(line); | |
370 | ret = write(fd, line, len); | |
371 | if (ret != len) { | |
372 | fprintf(stderr, "failed to write svg axis\n"); | |
373 | exit(1); | |
374 | } | |
375 | } | |
376 | ||
abf08f96 CM |
377 | /* |
378 | * this draws a backing rectangle for the plot and it | |
379 | * also creates a new svg element so our offsets can | |
380 | * be relative to this one plot. | |
381 | */ | |
382 | void setup_axis_spindle(struct plot *plot) | |
383 | { | |
384 | int len; | |
385 | int fd = plot->fd; | |
386 | int bump_height = tick_font_size * 3 + axis_label_font_size; | |
387 | ||
8ed9516f CM |
388 | legend_x_off = -60; |
389 | ||
390 | plot->total_width = axis_x_off(graph_width) + legend_width; | |
abf08f96 CM |
391 | plot->total_height = axis_y() + tick_label_pad + tick_font_size; |
392 | ||
393 | if (plot->add_xlabel) | |
394 | plot->total_height += bump_height; | |
395 | ||
396 | /* backing rect */ | |
8ed9516f | 397 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" " |
abf08f96 | 398 | "height=\"%d\" fill=\"white\" stroke=\"none\"/>", |
8ed9516f CM |
399 | plot->start_x_offset, |
400 | plot->start_y_offset, plot->total_width + 10, | |
abf08f96 CM |
401 | plot->total_height + 20); |
402 | len = strlen(line); | |
403 | write(fd, line, len); | |
404 | ||
8ed9516f | 405 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" " |
abf08f96 CM |
406 | "filter=\"url(#shadow)\" " |
407 | "height=\"%d\" fill=\"white\" stroke=\"none\"/>", | |
8ed9516f CM |
408 | plot->start_x_offset + 15, |
409 | plot->start_y_offset, plot->total_width - 30, | |
410 | plot->total_height); | |
abf08f96 CM |
411 | len = strlen(line); |
412 | write(fd, line, len); | |
413 | plot->total_height += 20; | |
414 | ||
415 | if (plot->total_height + plot->start_y_offset > final_height) | |
416 | final_height = plot->total_height + plot->start_y_offset; | |
8ed9516f CM |
417 | if (plot->start_x_offset + plot->total_width + 40 > final_width) |
418 | final_width = plot->start_x_offset + plot->total_width + 40; | |
abf08f96 CM |
419 | |
420 | /* create an svg object for all our coords to be relative against */ | |
421 | snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset); | |
422 | write(fd, line, strlen(line)); | |
423 | ||
424 | } | |
425 | ||
9e066e23 CM |
426 | /* draw a plot title. This should be done only once, |
427 | * and it bumps the plot width/height numbers by | |
428 | * what it draws. | |
429 | * | |
430 | * Call this before setting up the first axis | |
431 | */ | |
432 | void set_plot_title(struct plot *plot, char *title) | |
433 | { | |
434 | int len; | |
435 | int fd = plot->fd; | |
436 | ||
437 | plot->total_height = plot_title_height; | |
438 | plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + legend_width; | |
439 | ||
440 | /* backing rect */ | |
441 | snprintf(line, line_len, "<rect x=\"0\" y=\"%d\" width=\"%d\" height=\"%d\" fill=\"white\" stroke=\"none\"/>", | |
442 | plot->start_y_offset, plot->total_width + 40, plot_title_height + 20); | |
443 | len = strlen(line); | |
444 | write(fd, line, len); | |
445 | ||
446 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
447 | "font-weight=\"bold\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n", | |
448 | axis_x_off(graph_width / 2), | |
449 | plot->start_y_offset + plot_title_height / 2, | |
450 | font_family, plot_title_font_size, "middle", title); | |
451 | plot->start_y_offset += plot_title_height; | |
452 | len = strlen(line); | |
453 | write(fd, line, len); | |
454 | } | |
455 | ||
456 | /* | |
457 | * create evenly spread out ticks along the xaxis. if tick only is set | |
458 | * this just makes the ticks, otherwise it labels each tick as it goes | |
459 | */ | |
460 | void set_xticks(struct plot *plot, int num_ticks, int first, int last) | |
461 | { | |
462 | int pixels_per_tick = graph_width / num_ticks; | |
463 | int step = (last - first) / num_ticks; | |
464 | int i; | |
ba758825 | 465 | int tick_y = axis_y_off(graph_tick_len) + graph_inner_y_margin; |
9e066e23 CM |
466 | int tick_x = axis_x(); |
467 | int tick_only = plot->add_xlabel == 0; | |
468 | ||
469 | int text_y = axis_y() + tick_label_pad; | |
470 | ||
471 | char *middle = "middle"; | |
472 | char *start = "start"; | |
473 | ||
474 | for (i = 0; i < num_ticks; i++) { | |
475 | char *anchor; | |
476 | if (i != 0) { | |
477 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"2\" height=\"%d\" style=\"stroke:none;fill:black;\"/>\n", | |
478 | tick_x, tick_y, graph_tick_len); | |
479 | write(plot->fd, line, strlen(line)); | |
480 | anchor = middle; | |
481 | } else { | |
482 | anchor = start; | |
483 | } | |
484 | ||
485 | if (!tick_only) { | |
486 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
487 | "fill=\"black\" style=\"text-anchor: %s\">%d</text>\n", | |
488 | tick_x, text_y, font_family, tick_font_size, anchor, step * i); | |
489 | write(plot->fd, line, strlen(line)); | |
490 | } | |
491 | tick_x += pixels_per_tick; | |
492 | } | |
493 | ||
494 | if (!tick_only) { | |
495 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
496 | "fill=\"black\" style=\"text-anchor: middle\">%d</text>\n", | |
497 | axis_x_off(graph_width - 2), | |
498 | text_y, font_family, tick_font_size, last); | |
499 | write(plot->fd, line, strlen(line)); | |
500 | } | |
501 | } | |
502 | ||
503 | void set_ylabel(struct plot *plot, char *label) | |
504 | { | |
505 | int len; | |
506 | int fd = plot->fd; | |
507 | ||
508 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" " | |
509 | "transform=\"rotate(-90 %d %d)\" font-weight=\"bold\" " | |
510 | "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n", | |
511 | graph_left_pad / 2 - axis_label_font_size, | |
512 | axis_y_off(graph_height / 2), | |
513 | font_family, | |
514 | graph_left_pad / 2 - axis_label_font_size, | |
ba758825 | 515 | (int)axis_y_off(graph_height / 2), |
9e066e23 CM |
516 | axis_label_font_size, "middle", label); |
517 | len = strlen(line); | |
518 | write(fd, line, len); | |
519 | } | |
520 | ||
521 | void set_xlabel(struct plot *plot, char *label) | |
522 | { | |
523 | int len; | |
524 | int fd = plot->fd; | |
525 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" " | |
526 | "font-weight=\"bold\" " | |
527 | "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n", | |
528 | axis_x_off(graph_width / 2), | |
529 | axis_y() + tick_font_size * 3 + axis_label_font_size / 2, | |
530 | font_family, | |
531 | axis_label_font_size, "middle", label); | |
532 | len = strlen(line); | |
533 | write(fd, line, len); | |
534 | ||
535 | } | |
536 | ||
537 | /* | |
538 | * create evenly spread out ticks along the y axis. | |
539 | * The ticks are labeled as it goes | |
540 | */ | |
541 | void set_yticks(struct plot *plot, int num_ticks, int first, int last, char *units) | |
542 | { | |
543 | int pixels_per_tick = graph_height / num_ticks; | |
544 | int step = (last - first) / num_ticks; | |
545 | int i; | |
546 | int tick_y = 0; | |
547 | int text_x = axis_x() - 6; | |
548 | int tick_x = axis_x(); | |
549 | char *anchor = "end"; | |
550 | ||
551 | for (i = 0; i < num_ticks; i++) { | |
552 | if (i != 0) { | |
553 | snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" " | |
554 | "style=\"stroke:lightgray;stroke-width:2;stroke-dasharray:9,12;\"/>\n", | |
555 | tick_x, axis_y_off(tick_y), | |
556 | axis_x_off(graph_width), axis_y_off(tick_y)); | |
557 | write(plot->fd, line, strlen(line)); | |
558 | } | |
559 | ||
560 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
561 | "fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n", | |
562 | text_x, | |
563 | axis_y_off(tick_y - tick_font_size / 2), | |
564 | font_family, tick_font_size, anchor, step * i, units); | |
565 | write(plot->fd, line, strlen(line)); | |
566 | tick_y += pixels_per_tick; | |
567 | } | |
568 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
569 | "fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n", | |
570 | text_x, axis_y_off(graph_height), font_family, tick_font_size, anchor, last, units); | |
571 | write(plot->fd, line, strlen(line)); | |
572 | } | |
573 | ||
574 | void set_plot_label(struct plot *plot, char *label) | |
575 | { | |
576 | int len; | |
577 | int fd = plot->fd; | |
578 | ||
579 | snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" " | |
580 | "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n", | |
581 | axis_x() + graph_width / 2, | |
582 | plot_label_height / 2, | |
583 | font_family, plot_label_font_size, "middle", label); | |
584 | len = strlen(line); | |
585 | write(fd, line, len); | |
586 | } | |
587 | ||
588 | static void close_svg(int fd) | |
589 | { | |
590 | char *close_line = "</svg>\n"; | |
591 | ||
592 | write(fd, close_line, strlen(close_line)); | |
593 | } | |
594 | ||
595 | int close_plot(struct plot *plot) | |
596 | { | |
597 | close_svg(plot->fd); | |
cc3d54d5 CM |
598 | if (plot->direction == PLOT_DOWN) |
599 | plot->start_y_offset += plot->total_height; | |
600 | else if (plot->direction == PLOT_ACROSS) | |
601 | plot->start_x_offset += plot->total_width; | |
8ed9516f CM |
602 | return 0; |
603 | } | |
604 | ||
ba758825 | 605 | struct plot *alloc_plot(void) |
9e066e23 CM |
606 | { |
607 | struct plot *plot; | |
608 | plot = calloc(1, sizeof(*plot)); | |
609 | if (!plot) { | |
610 | fprintf(stderr, "Unable to allocate memory %s\n", strerror(errno)); | |
611 | exit(1); | |
612 | } | |
ba758825 | 613 | plot->fd = 0; |
9e066e23 CM |
614 | return plot; |
615 | } | |
616 | ||
abf08f96 CM |
617 | int close_plot_file(struct plot *plot) |
618 | { | |
619 | int ret; | |
620 | ret = lseek(plot->fd, 0, SEEK_SET); | |
621 | if (ret == (off_t)-1) { | |
622 | perror("seek"); | |
623 | exit(1); | |
624 | } | |
625 | final_width = ((final_width + 1) / 2) * 2; | |
626 | final_height = ((final_height + 1) / 2) * 2; | |
627 | snprintf(line, line_len, "<svg xmlns=\"http://www.w3.org/2000/svg\" " | |
628 | "width=\"%d\" height=\"%d\">\n", | |
629 | final_width, final_height); | |
630 | write(plot->fd, line, strlen(line)); | |
8ed9516f CM |
631 | snprintf(line, line_len, "<rect x=\"0\" y=\"0\" width=\"%d\" " |
632 | "height=\"%d\" fill=\"white\"/>\n", final_width, final_height); | |
633 | write(plot->fd, line, strlen(line)); | |
abf08f96 CM |
634 | close(plot->fd); |
635 | plot->fd = 0; | |
636 | return 0; | |
637 | } | |
638 | ||
ba758825 CM |
639 | void set_plot_output(struct plot *plot, char *filename) |
640 | { | |
641 | int fd; | |
642 | ||
643 | if (plot->fd) | |
abf08f96 | 644 | close_plot_file(plot); |
ba758825 CM |
645 | fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600); |
646 | if (fd < 0) { | |
647 | fprintf(stderr, "Unable to open output file %s err %s\n", filename, strerror(errno)); | |
648 | exit(1); | |
649 | } | |
650 | plot->fd = fd; | |
651 | plot->start_y_offset = plot->start_x_offset = 0; | |
652 | write_svg_header(fd); | |
653 | } | |
654 | ||
9e066e23 CM |
655 | char *byte_unit_names[] = { "", "K", "M", "G", "T", "P", "E", "Z", "Y", "unobtainium" }; |
656 | int MAX_BYTE_UNIT_SCALE = 9; | |
657 | ||
658 | char *time_unit_names[] = { "n", "u", "m", "s" }; | |
659 | int MAX_TIME_UNIT_SCALE = 3; | |
660 | ||
661 | void scale_line_graph_bytes(u64 *max, char **units, u64 factor) | |
662 | { | |
663 | int scale = 0; | |
664 | u64 val = *max; | |
665 | u64 div = 1; | |
666 | while (val > factor * 64) { | |
667 | val /= factor; | |
668 | scale++; | |
669 | div *= factor; | |
670 | } | |
671 | *units = byte_unit_names[scale]; | |
672 | if (scale == 0) | |
673 | return; | |
674 | ||
675 | if (scale > MAX_BYTE_UNIT_SCALE) | |
676 | scale = MAX_BYTE_UNIT_SCALE; | |
677 | ||
678 | *max /= div; | |
679 | } | |
680 | ||
681 | void scale_line_graph_time(u64 *max, char **units) | |
682 | { | |
683 | int scale = 0; | |
684 | u64 val = *max; | |
685 | u64 div = 1; | |
686 | while (val > 1000 * 10) { | |
687 | val /= 1000; | |
688 | scale++; | |
689 | div *= 1000; | |
690 | if (scale == MAX_TIME_UNIT_SCALE) | |
691 | break; | |
692 | } | |
693 | *units = time_unit_names[scale]; | |
694 | if (scale == 0) | |
695 | return; | |
696 | ||
697 | *max /= div; | |
698 | } | |
699 | ||
bfb0e441 | 700 | int svg_line_graph(struct plot *plot, struct graph_line_data *gld, char *color, int thresh1, int thresh2) |
9e066e23 CM |
701 | { |
702 | int i; | |
703 | double val; | |
bfb0e441 | 704 | double avg; |
9e066e23 CM |
705 | int rolling; |
706 | int fd = plot->fd; | |
707 | char *start = "<path d=\""; | |
708 | double yscale = ((double)gld->max) / graph_height; | |
709 | double xscale = (double)(gld->seconds - 1) / graph_width; | |
710 | char c = 'M'; | |
711 | double x; | |
bfb0e441 CM |
712 | int printed_header = 0; |
713 | int printed_lines = 0; | |
9e066e23 | 714 | |
49d17e16 | 715 | if (thresh1 && thresh2) |
bfb0e441 CM |
716 | rolling = 0; |
717 | else if (rolling_avg_secs) | |
9e066e23 CM |
718 | rolling = rolling_avg_secs; |
719 | else | |
720 | rolling = gld->stop_seconds / 25; | |
721 | ||
9e066e23 | 722 | for (i = 0; i < gld->stop_seconds; i++) { |
bfb0e441 | 723 | avg = rolling_avg(gld->data, i, rolling); |
49d17e16 CM |
724 | if (yscale == 0) |
725 | val = 0; | |
726 | else | |
727 | val = avg / yscale; | |
728 | ||
729 | if (val > graph_height) | |
730 | val = graph_height; | |
731 | if (val < 0) | |
732 | val = 0; | |
733 | ||
9e066e23 | 734 | x = (double)i / xscale; |
bfb0e441 CM |
735 | if (!thresh1 && !thresh2) { |
736 | ||
737 | if (!printed_header) { | |
738 | write(fd, start, strlen(start)); | |
739 | printed_header = 1; | |
740 | } | |
741 | ||
742 | /* in full line mode, everything in the graph is connected */ | |
743 | snprintf(line, line_len, "%c %d %d ", c, axis_x_off(x), axis_y_off(val)); | |
744 | c = 'L'; | |
745 | write(fd, line, strlen(line)); | |
746 | printed_lines = 1; | |
747 | } else if (avg > thresh1 || avg > thresh2) { | |
748 | int len = 10; | |
749 | if (!printed_header) { | |
750 | write(fd, start, strlen(start)); | |
751 | printed_header = 1; | |
752 | } | |
753 | ||
754 | /* otherwise, we just print a bar up there to show this one data point */ | |
f106953d | 755 | if (i >= gld->stop_seconds - 2) |
bfb0e441 CM |
756 | len = -10; |
757 | ||
758 | /* | |
759 | * we don't use the rolling averages here to show high | |
760 | * points in the data | |
761 | */ | |
762 | snprintf(line, line_len, "M %d %d h %d ", axis_x_off(x), | |
763 | axis_y_off(val), len); | |
764 | write(fd, line, strlen(line)); | |
765 | printed_lines = 1; | |
766 | } | |
9e066e23 | 767 | |
bfb0e441 CM |
768 | } |
769 | if (printed_lines) { | |
770 | snprintf(line, line_len, "\" fill=\"none\" stroke=\"%s\" stroke-width=\"2\"/>\n", color); | |
9e066e23 CM |
771 | write(fd, line, strlen(line)); |
772 | } | |
cc3d54d5 CM |
773 | if (plot->timeline) |
774 | svg_write_time_line(plot, plot->timeline); | |
9e066e23 CM |
775 | |
776 | return 0; | |
777 | } | |
778 | ||
ba758825 | 779 | void svg_write_time_line(struct plot *plot, int col) |
9e066e23 | 780 | { |
ba758825 CM |
781 | snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" " |
782 | "style=\"stroke:black;stroke-width:2;\"/>\n", | |
783 | axis_x_off(col), axis_y_off(0), | |
784 | axis_x_off(col), axis_y_off(graph_height)); | |
785 | write(plot->fd, line, strlen(line)); | |
786 | } | |
787 | ||
abf08f96 | 788 | static int svg_add_io(int fd, double row, double col, double width, double height, char *color) |
ba758825 CM |
789 | { |
790 | float rx = 0; | |
791 | ||
792 | snprintf(line, line_len, "<rect x=\"%.2f\" y=\"%.2f\" width=\"%.1f\" height=\"%.1f\" " | |
abf08f96 CM |
793 | "rx=\"%.2f\" style=\"stroke:none;fill:%s;stroke-width:0\"/>\n", |
794 | axis_x_off_double(col), axis_y_off_double(row), width, height, rx, color); | |
9e066e23 CM |
795 | return write(fd, line, strlen(line)); |
796 | } | |
797 | ||
abf08f96 | 798 | int svg_io_graph_movie_array(struct plot *plot, struct plot_history *ph) |
ba758825 CM |
799 | { |
800 | double cell_index; | |
801 | double movie_row; | |
802 | double movie_col; | |
803 | int i; | |
804 | ||
805 | for (i = 0; i < ph->num_used; i++) { | |
806 | cell_index = ph->history[i]; | |
807 | movie_row = floor(cell_index / graph_width); | |
808 | movie_col = cell_index - movie_row * graph_width; | |
abf08f96 CM |
809 | svg_add_io(plot->fd, movie_row, movie_col, 4, 4, ph->color); |
810 | } | |
811 | return 0; | |
812 | } | |
813 | ||
814 | static float spindle_steps = 0; | |
815 | ||
816 | void rewind_spindle_steps(int num) | |
817 | { | |
818 | spindle_steps -= num * 0.01; | |
819 | } | |
820 | ||
821 | int svg_io_graph_movie_array_spindle(struct plot *plot, struct plot_history *ph) | |
822 | { | |
823 | double cell_index; | |
824 | int i; | |
825 | int num_circles = 0; | |
826 | double cells_per_circle; | |
827 | double circle_num; | |
828 | double degrees_per_cell; | |
829 | double rot; | |
830 | double center_x; | |
831 | double center_y; | |
832 | double graph_width_extra = graph_width + graph_circle_extra; | |
833 | double graph_height_extra = graph_height + graph_circle_extra; | |
834 | double radius;; | |
835 | ||
836 | if (graph_width_extra > graph_height_extra) | |
837 | graph_width_extra = graph_height_extra; | |
838 | ||
839 | if (graph_width_extra < graph_height_extra) | |
840 | graph_height_extra = graph_width_extra; | |
841 | ||
842 | radius = graph_width_extra; | |
843 | ||
844 | center_x = axis_x_off_double(graph_width_extra / 2); | |
845 | center_y = axis_y_off_double(graph_height_extra / 2); | |
846 | ||
847 | snprintf(line, line_len, "<g transform=\"rotate(%.4f, %.2f, %.2f)\"> " | |
848 | "<circle cx=\"%.2f\" cy=\"%.2f\" " | |
849 | "stroke=\"black\" stroke-width=\"6\" " | |
850 | "r=\"%.2f\" fill=\"none\"/>\n", | |
851 | -spindle_steps * 1.2, center_x, center_y, center_x, center_y, graph_width_extra / 2); | |
852 | write(plot->fd, line, strlen(line)); | |
853 | snprintf(line, line_len, "<circle cx=\"%.2f\" cy=\"%.2f\" " | |
854 | "stroke=\"none\" fill=\"red\" r=\"%.2f\"/>\n</g>\n", | |
855 | axis_x_off_double(graph_width_extra), center_y, 4.5); | |
856 | write(plot->fd, line, strlen(line)); | |
857 | spindle_steps += 0.01; | |
858 | ||
859 | radius = floor(radius / 2); | |
860 | num_circles = radius / 4 - 3; | |
861 | cells_per_circle = ph->history_max / num_circles; | |
862 | degrees_per_cell = 360 / cells_per_circle; | |
863 | ||
864 | for (i = 0; i < ph->num_used; i++) { | |
865 | cell_index = ph->history[i]; | |
866 | circle_num = floor(cell_index / cells_per_circle); | |
867 | rot = cell_index - circle_num * cells_per_circle; | |
868 | circle_num = num_circles - circle_num; | |
869 | radius = circle_num * 4; | |
870 | ||
871 | rot = rot * degrees_per_cell; | |
872 | rot -= spindle_steps; | |
873 | snprintf(line, line_len, "<path transform=\"rotate(%.4f, %.2f, %.2f)\" " | |
874 | "d=\"M %.2f %.2f a %.2f %.2f 0 0 1 0 5\" " | |
875 | "stroke=\"%s\" stroke-width=\"4\"/>\n", | |
876 | rot, center_x, center_y, | |
877 | axis_x_off_double(graph_width_extra / 2 + radius) + 8, center_y, | |
878 | radius, radius, ph->color); | |
879 | ||
880 | write(plot->fd, line, strlen(line)); | |
ba758825 CM |
881 | } |
882 | return 0; | |
883 | } | |
884 | ||
885 | static int add_plot_history(struct plot_history *ph, double val) | |
886 | { | |
887 | if (ph->num_used == ph->history_len) { | |
888 | ph->history = realloc(ph->history, | |
889 | (ph->history_len + 4096) * sizeof(double)); | |
890 | if (!ph->history) { | |
891 | perror("Unable to allocate memory"); | |
892 | exit(1); | |
893 | } | |
894 | ph->history_len += 4096; | |
895 | } | |
896 | ph->history[ph->num_used++] = val; | |
897 | return 0; | |
898 | } | |
899 | ||
900 | int svg_io_graph_movie(struct graph_dot_data *gdd, struct plot_history *ph, int col) | |
901 | { | |
902 | int row = 0; | |
903 | int arr_index; | |
904 | unsigned char val; | |
905 | int bit_index; | |
906 | int bit_mod; | |
907 | double blocks_per_row = gdd->max_offset / gdd->rows; | |
908 | double movie_blocks_per_cell = gdd->max_offset / (graph_width * graph_height); | |
909 | double cell_index; | |
910 | int margin_orig = graph_inner_y_margin; | |
911 | ||
912 | graph_inner_y_margin += 5; | |
abf08f96 | 913 | ph->history_max = gdd->max_offset / movie_blocks_per_cell; |
ba758825 CM |
914 | |
915 | for (row = gdd->rows - 1; row >= 0; row--) { | |
916 | bit_index = row * gdd->cols + col; | |
917 | arr_index = bit_index / 8; | |
918 | bit_mod = bit_index % 8; | |
919 | ||
920 | if (arr_index < 0) | |
921 | continue; | |
922 | val = gdd->data[arr_index]; | |
923 | if (val & (1 << bit_mod)) { | |
924 | /* in bytes, linear offset from the start of the drive */ | |
925 | cell_index = (double)row * blocks_per_row; | |
926 | ||
927 | /* a cell number in the graph */ | |
928 | cell_index /= movie_blocks_per_cell; | |
929 | ||
930 | add_plot_history(ph, cell_index); | |
931 | } | |
932 | } | |
933 | graph_inner_y_margin = margin_orig; | |
934 | return 0; | |
935 | } | |
936 | ||
9e066e23 CM |
937 | int svg_io_graph(struct plot *plot, struct graph_dot_data *gdd, char *color) |
938 | { | |
939 | int fd = plot->fd;; | |
940 | int col = 0; | |
941 | int row = 0; | |
942 | int arr_index; | |
943 | unsigned char val; | |
944 | int bit_index; | |
945 | int bit_mod; | |
946 | ||
947 | for (row = gdd->rows - 1; row >= 0; row--) { | |
948 | for (col = 0; col < gdd->cols; col++) { | |
949 | bit_index = row * gdd->cols + col; | |
950 | arr_index = bit_index / 8; | |
951 | bit_mod = bit_index % 8; | |
952 | ||
953 | if (arr_index < 0) | |
954 | continue; | |
955 | val = gdd->data[arr_index]; | |
956 | if (val & (1 << bit_mod)) | |
abf08f96 | 957 | svg_add_io(fd, floor(row / io_graph_scale), col, 1.5, 1.5, color); |
9e066e23 CM |
958 | } |
959 | } | |
960 | return 0; | |
961 | } | |
962 | ||
963 | void svg_alloc_legend(struct plot *plot, int num_lines) | |
964 | { | |
965 | char **lines = calloc(num_lines, sizeof(char *)); | |
966 | plot->legend_index = 0; | |
967 | plot->legend_lines = lines; | |
968 | plot->num_legend_lines = num_lines; | |
969 | } | |
970 | ||
e199d546 | 971 | void svg_free_legend(struct plot *plot) |
9e066e23 CM |
972 | { |
973 | int i; | |
e199d546 CM |
974 | for (i = 0; i < plot->legend_index; i++) |
975 | free(plot->legend_lines[i]); | |
976 | free(plot->legend_lines); | |
977 | plot->legend_lines = NULL; | |
978 | plot->legend_index = 0; | |
979 | } | |
980 | ||
981 | void svg_write_legend(struct plot *plot) | |
982 | { | |
9e066e23 CM |
983 | int legend_line_x = axis_x_off(graph_width) + legend_x_off; |
984 | int legend_line_y = axis_y_off(graph_height) + legend_y_off; | |
e199d546 | 985 | int i; |
9e066e23 CM |
986 | |
987 | if (plot->legend_index == 0) | |
988 | return; | |
989 | ||
990 | snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" " | |
991 | "fill=\"white\" filter=\"url(#shadow)\"/>\n", | |
992 | legend_line_x - 15, | |
993 | legend_line_y - 12, | |
994 | legend_width, | |
995 | plot->legend_index * legend_font_size + legend_font_size / 2 + 12); | |
996 | ||
997 | write(plot->fd, line, strlen(line)); | |
998 | for (i = 0; i < plot->legend_index; i++) { | |
999 | write(plot->fd, plot->legend_lines[i], | |
1000 | strlen(plot->legend_lines[i])); | |
1001 | free(plot->legend_lines[i]); | |
1002 | } | |
1003 | free(plot->legend_lines); | |
e199d546 | 1004 | plot->legend_lines = NULL; |
9e066e23 | 1005 | plot->legend_index = 0; |
9e066e23 CM |
1006 | } |
1007 | ||
1008 | void svg_add_legend(struct plot *plot, char *text, char *extra, char *color) | |
1009 | { | |
1010 | int legend_line_x = axis_x_off(graph_width) + legend_x_off; | |
1011 | int legend_line_y = axis_y_off(graph_height) + legend_y_off; | |
1012 | ||
1013 | if (!text && (!extra || strlen(extra) == 0)) | |
1014 | return; | |
1015 | ||
1016 | legend_line_y += plot->legend_index * legend_font_size + legend_font_size / 2; | |
1017 | snprintf(line, line_len, "<path d=\"M %d %d h 8\" stroke=\"%s\" stroke-width=\"8\" " | |
1018 | "filter=\"url(#labelshadow)\"/> " | |
1019 | "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" " | |
1020 | "fill=\"black\" style=\"text-anchor: left\">%s%s</text>\n", | |
1021 | legend_line_x, legend_line_y, | |
1022 | color, legend_line_x + 13, | |
1023 | legend_line_y + 4, font_family, legend_font_size, | |
1024 | text, extra); | |
1025 | ||
1026 | plot->legend_lines[plot->legend_index++] = strdup(line); | |
1027 | } | |
1028 | ||
1029 | void set_legend_width(int longest_str) | |
1030 | { | |
1031 | if (longest_str) | |
1032 | legend_width = longest_str * (legend_font_size * 3 / 4) + 25; | |
1033 | else | |
1034 | legend_width = 0; | |
1035 | } | |
1036 | ||
1037 | void set_rolling_avg(int rolling) | |
1038 | { | |
1039 | rolling_avg_secs = rolling; | |
1040 | } | |
1041 | ||
ba758825 CM |
1042 | void set_io_graph_scale(int scale) |
1043 | { | |
1044 | io_graph_scale = scale; | |
1045 | } | |
1046 | ||
1047 | void set_graph_size(int width, int height) | |
1048 | { | |
1049 | graph_width = width; | |
1050 | graph_height = height; | |
1051 | } | |
1052 | ||
1053 | void get_graph_size(int *width, int *height) | |
1054 | { | |
1055 | *width = graph_width; | |
1056 | *height = graph_height; | |
1057 | } | |
1058 | ||
1059 | void set_graph_height(int h) | |
1060 | { | |
1061 | graph_height = h; | |
1062 | } | |
1063 | void set_graph_width(int w) | |
1064 | { | |
1065 | graph_width = w; | |
1066 | } |