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ed486911 | 1 | /* |
bc44d920 | 2 | * "$Id: rasterbench.c 6649 2007-07-11 21:46:42Z mike $" |
ed486911 | 3 | * |
4 | * Raster benchmark program for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
ed486911 | 7 | * Copyright 1997-2006 by Easy Software Products. |
8 | * | |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ed486911 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * main() - Benchmark the raster read/write functions. | |
20 | * compute_median() - Compute the median time for a test. | |
21 | * read_test() - Benchmark the raster read functions. | |
22 | * write_test() - Benchmark the raster write functions. | |
23 | */ | |
24 | ||
25 | /* | |
26 | * Include necessary headers... | |
27 | */ | |
28 | ||
29 | #include "raster.h" | |
30 | #include <stdlib.h> | |
31 | #include <sys/time.h> | |
32 | #include <signal.h> | |
33 | #include <unistd.h> | |
34 | #include <sys/wait.h> | |
35 | ||
36 | ||
37 | /* | |
38 | * Constants... | |
39 | */ | |
40 | ||
41 | #define TEST_WIDTH 1024 | |
42 | #define TEST_HEIGHT 1024 | |
43 | #define TEST_PAGES 16 | |
44 | #define TEST_PASSES 20 | |
45 | ||
46 | ||
47 | /* | |
48 | * Local functions... | |
49 | */ | |
50 | ||
51 | static double compute_median(double *secs); | |
52 | static double get_time(void); | |
53 | static void read_test(int fd); | |
54 | static int run_read_test(void); | |
55 | static void write_test(int fd); | |
56 | ||
57 | ||
58 | /* | |
59 | * 'main()' - Benchmark the raster read/write functions. | |
60 | */ | |
61 | ||
62 | int /* O - Exit status */ | |
63 | main(void) | |
64 | { | |
65 | int i; /* Looping var */ | |
66 | int ras_fd, /* File descriptor for read process */ | |
67 | status; /* Exit status of read process */ | |
68 | double start_secs, /* Start time */ | |
69 | write_secs, /* Write time */ | |
70 | read_secs, /* Read time */ | |
71 | pass_secs[TEST_PASSES]; /* Total test times */ | |
72 | ||
73 | ||
74 | /* | |
75 | * Ignore SIGPIPE... | |
76 | */ | |
77 | ||
78 | signal(SIGPIPE, SIG_IGN); | |
79 | ||
80 | /* | |
81 | * Run the tests several times to get a good average... | |
82 | */ | |
83 | ||
84 | printf("Test read/write speed of %d pages, %dx%d pixels...\n\n", | |
85 | TEST_PAGES, TEST_WIDTH, TEST_HEIGHT); | |
86 | for (i = 0; i < TEST_PASSES; i ++) | |
87 | { | |
88 | printf("PASS %2d: ", i + 1); | |
89 | fflush(stdout); | |
90 | ||
91 | ras_fd = run_read_test(); | |
92 | start_secs = get_time(); | |
93 | ||
94 | write_test(ras_fd); | |
95 | ||
96 | write_secs = get_time(); | |
97 | printf(" %.3f write,", write_secs - start_secs); | |
98 | fflush(stdout); | |
99 | ||
100 | close(ras_fd); | |
101 | wait(&status); | |
102 | ||
103 | read_secs = get_time(); | |
104 | pass_secs[i] = read_secs - start_secs; | |
105 | printf(" %.3f read, %.3f total\n", read_secs - write_secs, pass_secs[i]); | |
106 | } | |
107 | ||
108 | printf("\nMedian Total Time: %.3f seconds per document\n", | |
109 | compute_median(pass_secs)); | |
110 | ||
111 | return (0); | |
112 | } | |
113 | ||
114 | ||
115 | /* | |
116 | * 'compute_median()' - Compute the median time for a test. | |
117 | */ | |
118 | ||
119 | static double /* O - Median time in seconds */ | |
120 | compute_median(double *secs) /* I - Array of time samples */ | |
121 | { | |
122 | int i, j; /* Looping vars */ | |
123 | double temp; /* Swap variable */ | |
124 | ||
125 | ||
126 | /* | |
127 | * Sort the array into ascending order using a quicky bubble sort... | |
128 | */ | |
129 | ||
130 | for (i = 0; i < (TEST_PASSES - 1); i ++) | |
131 | for (j = i + 1; j < TEST_PASSES; j ++) | |
132 | if (secs[i] > secs[j]) | |
133 | { | |
134 | temp = secs[i]; | |
135 | secs[i] = secs[j]; | |
136 | secs[j] = temp; | |
137 | } | |
138 | ||
139 | /* | |
140 | * Return the average of the middle two samples... | |
141 | */ | |
142 | ||
143 | return (0.5 * (secs[TEST_PASSES / 2 - 1] + secs[TEST_PASSES / 2])); | |
144 | } | |
145 | ||
146 | ||
147 | /* | |
148 | * 'get_time()' - Get the current time in seconds. | |
149 | */ | |
150 | ||
151 | static double /* O - Time in seconds */ | |
152 | get_time(void) | |
153 | { | |
154 | struct timeval curtime; /* Current time */ | |
155 | ||
156 | ||
157 | gettimeofday(&curtime, NULL); | |
158 | return (curtime.tv_sec + 0.000001 * curtime.tv_usec); | |
159 | } | |
160 | ||
161 | ||
162 | /* | |
163 | * 'read_test()' - Benchmark the raster read functions. | |
164 | */ | |
165 | ||
166 | static void | |
167 | read_test(int fd) /* I - File descriptor to read from */ | |
168 | { | |
169 | int y; /* Looping var */ | |
170 | cups_raster_t *r; /* Raster stream */ | |
171 | cups_page_header_t header; /* Page header */ | |
172 | unsigned char buffer[8 * TEST_WIDTH]; | |
173 | /* Read buffer */ | |
174 | ||
175 | ||
176 | /* | |
177 | * Test read speed... | |
178 | */ | |
179 | ||
180 | if ((r = cupsRasterOpen(fd, CUPS_RASTER_READ)) == NULL) | |
181 | { | |
182 | perror("Unable to create raster input stream"); | |
183 | return; | |
184 | } | |
185 | ||
186 | while (cupsRasterReadHeader(r, &header)) | |
187 | { | |
188 | for (y = 0; y < header.cupsHeight; y ++) | |
189 | cupsRasterReadPixels(r, buffer, header.cupsBytesPerLine); | |
190 | } | |
191 | ||
192 | cupsRasterClose(r); | |
193 | } | |
194 | ||
195 | ||
196 | /* | |
197 | * 'run_read_test()' - Run the read test as a child process via pipes. | |
198 | */ | |
199 | ||
200 | static int /* O - Standard input of child */ | |
201 | run_read_test(void) | |
202 | { | |
203 | int ras_pipes[2]; /* Raster data pipes */ | |
204 | int pid; /* Child process ID */ | |
205 | ||
206 | ||
207 | if (pipe(ras_pipes)) | |
208 | return (-1); | |
209 | ||
210 | if ((pid = fork()) < 0) | |
211 | { | |
212 | /* | |
213 | * Fork error - return -1 on error... | |
214 | */ | |
215 | ||
216 | close(ras_pipes[0]); | |
217 | close(ras_pipes[1]); | |
218 | ||
219 | return (-1); | |
220 | } | |
221 | else if (pid == 0) | |
222 | { | |
223 | /* | |
224 | * Child comes here - read data from the input pipe... | |
225 | */ | |
226 | ||
227 | close(ras_pipes[1]); | |
228 | read_test(ras_pipes[0]); | |
229 | exit(0); | |
230 | } | |
231 | else | |
232 | { | |
233 | /* | |
234 | * Parent comes here - return the output pipe... | |
235 | */ | |
236 | ||
237 | close(ras_pipes[0]); | |
238 | return (ras_pipes[1]); | |
239 | } | |
240 | } | |
241 | ||
242 | ||
243 | /* | |
244 | * 'write_test()' - Benchmark the raster write functions. | |
245 | */ | |
246 | ||
247 | static void | |
248 | write_test(int fd) /* I - File descriptor to write to */ | |
249 | { | |
250 | int page, x, y; /* Looping vars */ | |
251 | int count; /* Number of bytes to set */ | |
252 | cups_raster_t *r; /* Raster stream */ | |
253 | cups_page_header_t header; /* Page header */ | |
254 | unsigned char data[32][8 * TEST_WIDTH]; | |
255 | /* Raster data to write */ | |
256 | ||
257 | ||
258 | /* | |
259 | * Create a combination of random data and repeated data to simulate | |
260 | * text with some whitespace. | |
261 | */ | |
262 | ||
263 | srand(time(NULL)); | |
264 | ||
265 | memset(data, 0, sizeof(data)); | |
266 | ||
267 | for (y = 0; y < 28; y ++) | |
268 | { | |
269 | for (x = rand() & 127, count = (rand() & 15) + 1; | |
270 | x < sizeof(data[0]); | |
271 | x ++, count --) | |
272 | { | |
273 | if (count <= 0) | |
274 | { | |
275 | x += (rand() & 15) + 1; | |
276 | count = (rand() & 15) + 1; | |
277 | ||
278 | if (x >= sizeof(data[0])) | |
279 | break; | |
280 | } | |
281 | ||
282 | data[y][x] = rand(); | |
283 | } | |
284 | } | |
285 | ||
286 | /* | |
287 | * Test write speed... | |
288 | */ | |
289 | ||
290 | if ((r = cupsRasterOpen(fd, CUPS_RASTER_WRITE)) == NULL) | |
291 | { | |
292 | perror("Unable to create raster output stream"); | |
293 | return; | |
294 | } | |
295 | ||
296 | for (page = 0; page < TEST_PAGES; page ++) | |
297 | { | |
298 | memset(&header, 0, sizeof(header)); | |
299 | header.cupsWidth = TEST_WIDTH; | |
300 | header.cupsHeight = TEST_HEIGHT; | |
301 | header.cupsBytesPerLine = TEST_WIDTH; | |
302 | ||
303 | if (page & 1) | |
304 | { | |
305 | header.cupsBytesPerLine *= 4; | |
306 | header.cupsColorSpace = CUPS_CSPACE_CMYK; | |
307 | header.cupsColorOrder = CUPS_ORDER_CHUNKED; | |
308 | } | |
309 | else | |
310 | { | |
311 | header.cupsColorSpace = CUPS_CSPACE_K; | |
312 | header.cupsColorOrder = CUPS_ORDER_BANDED; | |
313 | } | |
314 | ||
315 | if (page & 2) | |
316 | { | |
317 | header.cupsBytesPerLine *= 2; | |
318 | header.cupsBitsPerColor = 16; | |
319 | header.cupsBitsPerPixel = (page & 1) ? 64 : 16; | |
320 | } | |
321 | else | |
322 | { | |
323 | header.cupsBitsPerColor = 8; | |
324 | header.cupsBitsPerPixel = (page & 1) ? 32 : 8; | |
325 | } | |
326 | ||
327 | cupsRasterWriteHeader(r, &header); | |
328 | ||
329 | for (y = 0; y < TEST_HEIGHT; y ++) | |
330 | cupsRasterWritePixels(r, data[y & 31], header.cupsBytesPerLine); | |
331 | } | |
332 | ||
333 | cupsRasterClose(r); | |
334 | } | |
335 | ||
336 | ||
337 | /* | |
bc44d920 | 338 | * End of "$Id: rasterbench.c 6649 2007-07-11 21:46:42Z mike $". |
ed486911 | 339 | */ |