1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
|
/* Copyright 2016 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
/* Run the tests listed on the command line. */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#if defined(_WIN32)
#include <Windows.h>
#define popen _popen
#define pclose _pclose
#define sleep(n) Sleep ((n) * 1000)
#define mkstemp(x) (-1)
#define TEMP tmpnam (NULL)
#define closefd(fd)
#else
#include <unistd.h>
#define TEMP templ
#define closefd(fd) close (fd)
#endif
/* If x is non-zero, print a usage message on stderr, and exit
with a non-zero status. */
static void usage_if (int x) {
if (x) {
fprintf (stderr,
"usage: run_tests [-p <N>] [-n <N>] [-bB] test...\n"
" -p <N> runs <N> tests in parallel\n"
" -n <N> runs <N> subtests in parallel\n"
" -b benchmarks are run if tests pass\n"
" -B only benchmarks are run\n"
"Benchmarks are not run in parallel.\n");
exit (2);
}
}
/* Describe a run of a test */
struct test_run {
char *name; /* test name (execuatble to run) */
char *cmd; /* command line with flags to be passed to popen() */
char *file; /* output file */
int fd; /* output file fd or -1 */
FILE *pfp; /* result of popen(); NULL when run is complete */
int status; /* result of pclose */
};
/* Return whether the file with nul-terminated name file[] can be read, and
ends with a newline. Also returns true if file==NULL.*/
static int file_ready (const char *file) {
int lastc = '\n';
if (file != NULL) {
FILE *fp = fopen (file, "r");
lastc = -1;
if (fp != NULL) {
int c;
lastc = '\n';
while ((c = getc (fp)) != EOF) {
lastc = c;
}
fclose (fp);
}
}
return (lastc == '\n');
}
/* If file != NULL, output the contents of file with nul-terminated name file[]
to ofp. Return 2 if I/O failed, and 0 otherwise. */
static int output (FILE *ofp, const char *file) {
int rc = 0;
if (file != NULL) {
FILE *fp = fopen (file, "r");
if (fp == NULL) {
perror (file);
rc = 2;
} else {
int c;
while ((c = getc (fp)) != EOF) {
putc (c, ofp);
}
if (ferror (fp)) {
perror (file);
rc = 2;
}
if (fclose (fp) != 0) {
perror (file);
rc = 2;
}
}
unlink (file);
fflush (ofp);
}
return (rc);
}
/* Run the tests test[0, .., n-1], running as many as possible in parallel,
Assumes that test[*].{name,cmd,file} are filled in, and other
fields are uninitialized.
On return, all fields are initialized.
It is expected that all output has been directed to the file named by
test[*].file[] (if parallelism > 1) or test[*].pfp (if parallelism==1).
test[*].status is valid, and test[*].pfp == NULL. Any output from the
commands is written to *ofp, and test[*].file[] is removed.
Returns 0 on success, 2 if any I/O error occurred, and 1 if a test failed,
and 3 if a test failed and there was an I/O error.
Attempts to run "parallelism" tests in parallel.
The parallelism is half-hearted as we avoid threads and
non-blocking I/O for portability. */
static int run (FILE *ofp, int n, struct test_run *test, int parallelism) {
int running = 0;
int started = 0;
int flushed = 0;
int rc = 0;
int i;
while (flushed != n) {
for (i = 0; i != started; i++) {
if (test[i].pfp != NULL &&
file_ready (test[i].file)) {
int c;
int err;
while ((c = getc (test[i].pfp)) != EOF) {
putc (c, ofp);
if (c == '\n' || c == ' ') {
fflush (ofp);
}
}
err = ferror (test[i].pfp);
test[i].status = pclose (test[i].pfp);
if (test[i].status != 0) {
rc |= 1;
} else if (err) {
test[i].status = 1;
rc |= 1;
}
test[i].pfp = NULL;
running--;
}
}
while (flushed != started && test[flushed].pfp == NULL) {
rc |= output (ofp, test[flushed].file);
flushed++;
}
while (running < parallelism && started != n) {
test[started].pfp = popen (test[started].cmd, "r");
test[started].status = 2;
running += (test[started].pfp != NULL);
started++;
}
if (parallelism > 1) {
sleep (1);
}
}
if ((rc & 1) != 0) {
fprintf (stderr, "failures:");
for (i = 0; i != n; i++) {
if (test[i].status != 0) {
fprintf (stderr, " %s\n", test[i].name);
}
}
fprintf (stderr, "\n");
}
return (rc);
}
/* For each test run test[0, .., n-1], test run, free its output file name and
cmd string. */
static void cleanup (int n, struct test_run *test) {
int i;
for (i = 0; i != n; i++) {
if (test[i].fd != -1) {
closefd (test[i].fd);
}
if (test[i].file != NULL) {
free (test[i].file);
}
free (test[i].cmd);
}
}
/* Run the tests in test[0, .., n-1] with the deisgnated parallism.
Run Benchmarks instead of tests if is_benchmark != 0.
On entry, only the test[*].name field is valid.
Return a suitable exit code, 0 for success, and non-zero for failure.
Output is written to *ofp. */
static int run_tests (FILE *ofp, int n, struct test_run *test,
int parallelism, int subparallelism, int is_benchmark) {
int i;
int rc;
for (i = 0; i != n; i++) {
int cmd_len;
char flags[64];
char *redirect;
if (parallelism > 1) {
int redirect_len;
char templ[64];
snprintf (templ, sizeof (templ),
"/tmp/run_tests.XXXXXXXXX");
test[i].fd = mkstemp (templ);
test[i].file = strdup (TEMP);
redirect_len = strlen (test[i].file) + 10;
redirect = (char *) malloc (redirect_len);
snprintf (redirect, redirect_len, "> \"%s\"",
test[i].file);
} else {
test[i].file = NULL;
test[i].fd = -1;
redirect = strdup ("");
}
if (subparallelism == 1) {
snprintf (flags, sizeof (flags), "%s",
is_benchmark? "-B" : "");
} else {
snprintf (flags, sizeof (flags), "%s -n %d",
is_benchmark? "-B" : "",
subparallelism);
}
cmd_len = strlen (test[i].name) +
strlen (redirect) + strlen (flags) + 64;
test[i].cmd = (char *) malloc (cmd_len);
snprintf (test[i].cmd, cmd_len, "%s %s %s 2>&1",
test[i].name, flags, redirect);
free (redirect);
}
rc = run (ofp, n, test, parallelism);
cleanup (n, test);
return (rc);
}
int main (int argc, char *argv[]) {
int do_run_benchmarks = 0;
int do_run_tests = 1;
int parallelism = 1;
int subparallelism = 1;
int test_n = 0;
int test_max = 16;
struct test_run *test =
(struct test_run *) malloc (sizeof (test[0]) * test_max);
int rc = 0;
int argn;
for (argn = 1; argn != argc; argn++) {
const char *arg = argv[argn];
if (arg[0] == '-') {
const char *f;
for (f = &arg[1]; *f != 0; f++) {
switch (*f) {
case 'p': usage_if (argn+1 == argc);
parallelism = atoi (argv[++argn]);
break;
case 'n': usage_if (argn+1 == argc);
subparallelism = atoi (argv[++argn]);
break;
case 'b': do_run_benchmarks = 1;
break;
case 'B': do_run_benchmarks = 1;
do_run_tests = 0;
break;
default: usage_if (1);
}
}
} else {
if (test_n == test_max) {
test_max *= 2;
test = (struct test_run *) realloc (
test, sizeof (test[0]) * test_max);
}
test[test_n++].name = argv[argn];
}
}
if (do_run_tests) {
rc |= run_tests (stdout, test_n, test,
parallelism, subparallelism, 0);
}
if (do_run_benchmarks && rc == 0) {
rc |= run_tests (stdout, test_n, test, 1, 1, 1);
}
free (test);
return (rc);
}
|
