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1// SPDX-License-Identifier: GPL-2.0
2#include <dirent.h>
3#include <stdlib.h>
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <sys/stat.h>
7#include <fcntl.h>
8#include <string.h>
9#include <sys/time.h>
10#include <sys/resource.h>
11#include <api/fs/fs.h>
12#include "dso.h"
13#include "machine.h"
14#include "symbol.h"
15#include "tests.h"
16#include "debug.h"
17
18static char *test_file(int size)
19{
20#define TEMPL "/tmp/perf-test-XXXXXX"
21 static char buf_templ[sizeof(TEMPL)];
22 char *templ = buf_templ;
23 int fd, i;
24 unsigned char *buf;
25
26 strcpy(buf_templ, TEMPL);
27#undef TEMPL
28
29 fd = mkstemp(templ);
30 if (fd < 0) {
31 perror("mkstemp failed");
32 return NULL;
33 }
34
35 buf = malloc(size);
36 if (!buf) {
37 close(fd);
38 return NULL;
39 }
40
41 for (i = 0; i < size; i++)
42 buf[i] = (unsigned char) ((int) i % 10);
43
44 if (size != write(fd, buf, size))
45 templ = NULL;
46
47 free(buf);
48 close(fd);
49 return templ;
50}
51
52#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20)
53
54struct test_data_offset {
55 off_t offset;
56 u8 data[10];
57 int size;
58};
59
60struct test_data_offset offsets[] = {
61 /* Fill first cache page. */
62 {
63 .offset = 10,
64 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
65 .size = 10,
66 },
67 /* Read first cache page. */
68 {
69 .offset = 10,
70 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
71 .size = 10,
72 },
73 /* Fill cache boundary pages. */
74 {
75 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
76 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
77 .size = 10,
78 },
79 /* Read cache boundary pages. */
80 {
81 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
82 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
83 .size = 10,
84 },
85 /* Fill final cache page. */
86 {
87 .offset = TEST_FILE_SIZE - 10,
88 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
89 .size = 10,
90 },
91 /* Read final cache page. */
92 {
93 .offset = TEST_FILE_SIZE - 10,
94 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
95 .size = 10,
96 },
97 /* Read final cache page. */
98 {
99 .offset = TEST_FILE_SIZE - 3,
100 .data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 },
101 .size = 3,
102 },
103};
104
105/* move it from util/dso.c for compatibility */
106static int dso__data_fd(struct dso *dso, struct machine *machine)
107{
108 int fd = dso__data_get_fd(dso, machine);
109
110 if (fd >= 0)
111 dso__data_put_fd(dso);
112
113 return fd;
114}
115
116static int test__dso_data(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
117{
118 struct machine machine;
119 struct dso *dso;
120 char *file = test_file(TEST_FILE_SIZE);
121 size_t i;
122
123 TEST_ASSERT_VAL("No test file", file);
124
125 memset(&machine, 0, sizeof(machine));
126
127 dso = dso__new((const char *)file);
128
129 TEST_ASSERT_VAL("Failed to access to dso",
130 dso__data_fd(dso, &machine) >= 0);
131
132 /* Basic 10 bytes tests. */
133 for (i = 0; i < ARRAY_SIZE(offsets); i++) {
134 struct test_data_offset *data = &offsets[i];
135 ssize_t size;
136 u8 buf[10];
137
138 memset(buf, 0, 10);
139 size = dso__data_read_offset(dso, &machine, data->offset,
140 buf, 10);
141
142 TEST_ASSERT_VAL("Wrong size", size == data->size);
143 TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10));
144 }
145
146 /* Read cross multiple cache pages. */
147 {
148 ssize_t size;
149 int c;
150 u8 *buf;
151
152 buf = malloc(TEST_FILE_SIZE);
153 TEST_ASSERT_VAL("ENOMEM\n", buf);
154
155 /* First iteration to fill caches, second one to read them. */
156 for (c = 0; c < 2; c++) {
157 memset(buf, 0, TEST_FILE_SIZE);
158 size = dso__data_read_offset(dso, &machine, 10,
159 buf, TEST_FILE_SIZE);
160
161 TEST_ASSERT_VAL("Wrong size",
162 size == (TEST_FILE_SIZE - 10));
163
164 for (i = 0; i < (size_t)size; i++)
165 TEST_ASSERT_VAL("Wrong data",
166 buf[i] == (i % 10));
167 }
168
169 free(buf);
170 }
171
172 dso__put(dso);
173 unlink(file);
174 return 0;
175}
176
177static long open_files_cnt(void)
178{
179 char path[PATH_MAX];
180 struct dirent *dent;
181 DIR *dir;
182 long nr = 0;
183
184 scnprintf(path, PATH_MAX, "%s/self/fd", procfs__mountpoint());
185 pr_debug("fd path: %s\n", path);
186
187 dir = opendir(path);
188 TEST_ASSERT_VAL("failed to open fd directory", dir);
189
190 while ((dent = readdir(dir)) != NULL) {
191 if (!strcmp(dent->d_name, ".") ||
192 !strcmp(dent->d_name, ".."))
193 continue;
194
195 nr++;
196 }
197
198 closedir(dir);
199 return nr - 1;
200}
201
202static struct dso **dsos;
203
204static int dsos__create(int cnt, int size)
205{
206 int i;
207
208 dsos = malloc(sizeof(*dsos) * cnt);
209 TEST_ASSERT_VAL("failed to alloc dsos array", dsos);
210
211 for (i = 0; i < cnt; i++) {
212 char *file;
213
214 file = test_file(size);
215 TEST_ASSERT_VAL("failed to get dso file", file);
216
217 dsos[i] = dso__new(file);
218 TEST_ASSERT_VAL("failed to get dso", dsos[i]);
219 }
220
221 return 0;
222}
223
224static void dsos__delete(int cnt)
225{
226 int i;
227
228 for (i = 0; i < cnt; i++) {
229 struct dso *dso = dsos[i];
230
231 unlink(dso->name);
232 dso__put(dso);
233 }
234
235 free(dsos);
236}
237
238static int set_fd_limit(int n)
239{
240 struct rlimit rlim;
241
242 if (getrlimit(RLIMIT_NOFILE, &rlim))
243 return -1;
244
245 pr_debug("file limit %ld, new %d\n", (long) rlim.rlim_cur, n);
246
247 rlim.rlim_cur = n;
248 return setrlimit(RLIMIT_NOFILE, &rlim);
249}
250
251static int test__dso_data_cache(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
252{
253 struct machine machine;
254 long nr_end, nr = open_files_cnt();
255 int dso_cnt, limit, i, fd;
256
257 /* Rest the internal dso open counter limit. */
258 reset_fd_limit();
259
260 memset(&machine, 0, sizeof(machine));
261
262 /* set as system limit */
263 limit = nr * 4;
264 TEST_ASSERT_VAL("failed to set file limit", !set_fd_limit(limit));
265
266 /* and this is now our dso open FDs limit */
267 dso_cnt = limit / 2;
268 TEST_ASSERT_VAL("failed to create dsos\n",
269 !dsos__create(dso_cnt, TEST_FILE_SIZE));
270
271 for (i = 0; i < (dso_cnt - 1); i++) {
272 struct dso *dso = dsos[i];
273
274 /*
275 * Open dsos via dso__data_fd(), it opens the data
276 * file and keep it open (unless open file limit).
277 */
278 fd = dso__data_fd(dso, &machine);
279 TEST_ASSERT_VAL("failed to get fd", fd > 0);
280
281 if (i % 2) {
282 #define BUFSIZE 10
283 u8 buf[BUFSIZE];
284 ssize_t n;
285
286 n = dso__data_read_offset(dso, &machine, 0, buf, BUFSIZE);
287 TEST_ASSERT_VAL("failed to read dso", n == BUFSIZE);
288 }
289 }
290
291 /* verify the first one is already open */
292 TEST_ASSERT_VAL("dsos[0] is not open", dsos[0]->data.fd != -1);
293
294 /* open +1 dso to reach the allowed limit */
295 fd = dso__data_fd(dsos[i], &machine);
296 TEST_ASSERT_VAL("failed to get fd", fd > 0);
297
298 /* should force the first one to be closed */
299 TEST_ASSERT_VAL("failed to close dsos[0]", dsos[0]->data.fd == -1);
300
301 /* cleanup everything */
302 dsos__delete(dso_cnt);
303
304 /* Make sure we did not leak any file descriptor. */
305 nr_end = open_files_cnt();
306 pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end);
307 TEST_ASSERT_VAL("failed leaking files", nr == nr_end);
308 return 0;
309}
310
311static long new_limit(int count)
312{
313 int fd = open("/dev/null", O_RDONLY);
314 long ret = fd;
315 if (count > 0)
316 ret = new_limit(--count);
317 close(fd);
318 return ret;
319}
320
321static int test__dso_data_reopen(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
322{
323 struct machine machine;
324 long nr_end, nr = open_files_cnt(), lim = new_limit(3);
325 int fd, fd_extra;
326
327#define dso_0 (dsos[0])
328#define dso_1 (dsos[1])
329#define dso_2 (dsos[2])
330
331 /* Rest the internal dso open counter limit. */
332 reset_fd_limit();
333
334 memset(&machine, 0, sizeof(machine));
335
336 /*
337 * Test scenario:
338 * - create 3 dso objects
339 * - set process file descriptor limit to current
340 * files count + 3
341 * - test that the first dso gets closed when we
342 * reach the files count limit
343 */
344
345 /* Make sure we are able to open 3 fds anyway */
346 TEST_ASSERT_VAL("failed to set file limit",
347 !set_fd_limit((lim)));
348
349 TEST_ASSERT_VAL("failed to create dsos\n", !dsos__create(3, TEST_FILE_SIZE));
350
351 /* open dso_0 */
352 fd = dso__data_fd(dso_0, &machine);
353 TEST_ASSERT_VAL("failed to get fd", fd > 0);
354
355 /* open dso_1 */
356 fd = dso__data_fd(dso_1, &machine);
357 TEST_ASSERT_VAL("failed to get fd", fd > 0);
358
359 /*
360 * open extra file descriptor and we just
361 * reached the files count limit
362 */
363 fd_extra = open("/dev/null", O_RDONLY);
364 TEST_ASSERT_VAL("failed to open extra fd", fd_extra > 0);
365
366 /* open dso_2 */
367 fd = dso__data_fd(dso_2, &machine);
368 TEST_ASSERT_VAL("failed to get fd", fd > 0);
369
370 /*
371 * dso_0 should get closed, because we reached
372 * the file descriptor limit
373 */
374 TEST_ASSERT_VAL("failed to close dso_0", dso_0->data.fd == -1);
375
376 /* open dso_0 */
377 fd = dso__data_fd(dso_0, &machine);
378 TEST_ASSERT_VAL("failed to get fd", fd > 0);
379
380 /*
381 * dso_1 should get closed, because we reached
382 * the file descriptor limit
383 */
384 TEST_ASSERT_VAL("failed to close dso_1", dso_1->data.fd == -1);
385
386 /* cleanup everything */
387 close(fd_extra);
388 dsos__delete(3);
389
390 /* Make sure we did not leak any file descriptor. */
391 nr_end = open_files_cnt();
392 pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end);
393 TEST_ASSERT_VAL("failed leaking files", nr == nr_end);
394 return 0;
395}
396
397DEFINE_SUITE("DSO data read", dso_data);
398DEFINE_SUITE("DSO data cache", dso_data_cache);
399DEFINE_SUITE("DSO data reopen", dso_data_reopen);
1// SPDX-License-Identifier: GPL-2.0
2#include <dirent.h>
3#include <stdlib.h>
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <sys/stat.h>
7#include <fcntl.h>
8#include <string.h>
9#include <sys/time.h>
10#include <sys/resource.h>
11#include <api/fs/fs.h>
12#include "dso.h"
13#include "dsos.h"
14#include "machine.h"
15#include "symbol.h"
16#include "tests.h"
17#include "debug.h"
18
19static char *test_file(int size)
20{
21#define TEMPL "/tmp/perf-test-XXXXXX"
22 static char buf_templ[sizeof(TEMPL)];
23 char *templ = buf_templ;
24 int fd, i;
25 unsigned char *buf;
26
27 strcpy(buf_templ, TEMPL);
28#undef TEMPL
29
30 fd = mkstemp(templ);
31 if (fd < 0) {
32 perror("mkstemp failed");
33 return NULL;
34 }
35
36 buf = malloc(size);
37 if (!buf) {
38 close(fd);
39 return NULL;
40 }
41
42 for (i = 0; i < size; i++)
43 buf[i] = (unsigned char) ((int) i % 10);
44
45 if (size != write(fd, buf, size))
46 templ = NULL;
47
48 free(buf);
49 close(fd);
50 return templ;
51}
52
53#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20)
54
55struct test_data_offset {
56 off_t offset;
57 u8 data[10];
58 int size;
59};
60
61struct test_data_offset offsets[] = {
62 /* Fill first cache page. */
63 {
64 .offset = 10,
65 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
66 .size = 10,
67 },
68 /* Read first cache page. */
69 {
70 .offset = 10,
71 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
72 .size = 10,
73 },
74 /* Fill cache boundary pages. */
75 {
76 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
77 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
78 .size = 10,
79 },
80 /* Read cache boundary pages. */
81 {
82 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
83 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
84 .size = 10,
85 },
86 /* Fill final cache page. */
87 {
88 .offset = TEST_FILE_SIZE - 10,
89 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
90 .size = 10,
91 },
92 /* Read final cache page. */
93 {
94 .offset = TEST_FILE_SIZE - 10,
95 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
96 .size = 10,
97 },
98 /* Read final cache page. */
99 {
100 .offset = TEST_FILE_SIZE - 3,
101 .data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 },
102 .size = 3,
103 },
104};
105
106/* move it from util/dso.c for compatibility */
107static int dso__data_fd(struct dso *dso, struct machine *machine)
108{
109 int fd = dso__data_get_fd(dso, machine);
110
111 if (fd >= 0)
112 dso__data_put_fd(dso);
113
114 return fd;
115}
116
117static int test__dso_data(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
118{
119 struct machine machine;
120 struct dso *dso;
121 char *file = test_file(TEST_FILE_SIZE);
122 size_t i;
123
124 TEST_ASSERT_VAL("No test file", file);
125
126 memset(&machine, 0, sizeof(machine));
127 dsos__init(&machine.dsos);
128
129 dso = dso__new(file);
130 TEST_ASSERT_VAL("Failed to add dso", !dsos__add(&machine.dsos, dso));
131 TEST_ASSERT_VAL("Failed to access to dso",
132 dso__data_fd(dso, &machine) >= 0);
133
134 /* Basic 10 bytes tests. */
135 for (i = 0; i < ARRAY_SIZE(offsets); i++) {
136 struct test_data_offset *data = &offsets[i];
137 ssize_t size;
138 u8 buf[10];
139
140 memset(buf, 0, 10);
141 size = dso__data_read_offset(dso, &machine, data->offset,
142 buf, 10);
143
144 TEST_ASSERT_VAL("Wrong size", size == data->size);
145 TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10));
146 }
147
148 /* Read cross multiple cache pages. */
149 {
150 ssize_t size;
151 int c;
152 u8 *buf;
153
154 buf = malloc(TEST_FILE_SIZE);
155 TEST_ASSERT_VAL("ENOMEM\n", buf);
156
157 /* First iteration to fill caches, second one to read them. */
158 for (c = 0; c < 2; c++) {
159 memset(buf, 0, TEST_FILE_SIZE);
160 size = dso__data_read_offset(dso, &machine, 10,
161 buf, TEST_FILE_SIZE);
162
163 TEST_ASSERT_VAL("Wrong size",
164 size == (TEST_FILE_SIZE - 10));
165
166 for (i = 0; i < (size_t)size; i++)
167 TEST_ASSERT_VAL("Wrong data",
168 buf[i] == (i % 10));
169 }
170
171 free(buf);
172 }
173
174 dso__put(dso);
175 dsos__exit(&machine.dsos);
176 unlink(file);
177 return 0;
178}
179
180static long open_files_cnt(void)
181{
182 char path[PATH_MAX];
183 struct dirent *dent;
184 DIR *dir;
185 long nr = 0;
186
187 scnprintf(path, PATH_MAX, "%s/self/fd", procfs__mountpoint());
188 pr_debug("fd path: %s\n", path);
189
190 dir = opendir(path);
191 TEST_ASSERT_VAL("failed to open fd directory", dir);
192
193 while ((dent = readdir(dir)) != NULL) {
194 if (!strcmp(dent->d_name, ".") ||
195 !strcmp(dent->d_name, ".."))
196 continue;
197
198 nr++;
199 }
200
201 closedir(dir);
202 return nr - 1;
203}
204
205static int dsos__create(int cnt, int size, struct dsos *dsos)
206{
207 int i;
208
209 dsos__init(dsos);
210
211 for (i = 0; i < cnt; i++) {
212 struct dso *dso;
213 char *file = test_file(size);
214
215 TEST_ASSERT_VAL("failed to get dso file", file);
216 dso = dso__new(file);
217 TEST_ASSERT_VAL("failed to get dso", dso);
218 TEST_ASSERT_VAL("failed to add dso", !dsos__add(dsos, dso));
219 dso__put(dso);
220 }
221
222 return 0;
223}
224
225static void dsos__delete(struct dsos *dsos)
226{
227 for (unsigned int i = 0; i < dsos->cnt; i++) {
228 struct dso *dso = dsos->dsos[i];
229
230 dso__data_close(dso);
231 unlink(dso__name(dso));
232 }
233 dsos__exit(dsos);
234}
235
236static int set_fd_limit(int n)
237{
238 struct rlimit rlim;
239
240 if (getrlimit(RLIMIT_NOFILE, &rlim))
241 return -1;
242
243 pr_debug("file limit %ld, new %d\n", (long) rlim.rlim_cur, n);
244
245 rlim.rlim_cur = n;
246 return setrlimit(RLIMIT_NOFILE, &rlim);
247}
248
249static int test__dso_data_cache(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
250{
251 struct machine machine;
252 long nr_end, nr = open_files_cnt();
253 int dso_cnt, limit, i, fd;
254
255 /* Rest the internal dso open counter limit. */
256 reset_fd_limit();
257
258 memset(&machine, 0, sizeof(machine));
259
260 /* set as system limit */
261 limit = nr * 4;
262 TEST_ASSERT_VAL("failed to set file limit", !set_fd_limit(limit));
263
264 /* and this is now our dso open FDs limit */
265 dso_cnt = limit / 2;
266 TEST_ASSERT_VAL("failed to create dsos\n",
267 !dsos__create(dso_cnt, TEST_FILE_SIZE, &machine.dsos));
268
269 for (i = 0; i < (dso_cnt - 1); i++) {
270 struct dso *dso = machine.dsos.dsos[i];
271
272 /*
273 * Open dsos via dso__data_fd(), it opens the data
274 * file and keep it open (unless open file limit).
275 */
276 fd = dso__data_fd(dso, &machine);
277 TEST_ASSERT_VAL("failed to get fd", fd > 0);
278
279 if (i % 2) {
280 #define BUFSIZE 10
281 u8 buf[BUFSIZE];
282 ssize_t n;
283
284 n = dso__data_read_offset(dso, &machine, 0, buf, BUFSIZE);
285 TEST_ASSERT_VAL("failed to read dso", n == BUFSIZE);
286 }
287 }
288
289 /* verify the first one is already open */
290 TEST_ASSERT_VAL("dsos[0] is not open", dso__data(machine.dsos.dsos[0])->fd != -1);
291
292 /* open +1 dso to reach the allowed limit */
293 fd = dso__data_fd(machine.dsos.dsos[i], &machine);
294 TEST_ASSERT_VAL("failed to get fd", fd > 0);
295
296 /* should force the first one to be closed */
297 TEST_ASSERT_VAL("failed to close dsos[0]", dso__data(machine.dsos.dsos[0])->fd == -1);
298
299 /* cleanup everything */
300 dsos__delete(&machine.dsos);
301
302 /* Make sure we did not leak any file descriptor. */
303 nr_end = open_files_cnt();
304 pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end);
305 TEST_ASSERT_VAL("failed leaking files", nr == nr_end);
306 return 0;
307}
308
309static long new_limit(int count)
310{
311 int fd = open("/dev/null", O_RDONLY);
312 long ret = fd;
313 if (count > 0)
314 ret = new_limit(--count);
315 close(fd);
316 return ret;
317}
318
319static int test__dso_data_reopen(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
320{
321 struct machine machine;
322 long nr_end, nr = open_files_cnt(), lim = new_limit(3);
323 int fd, fd_extra;
324
325#define dso_0 (machine.dsos.dsos[0])
326#define dso_1 (machine.dsos.dsos[1])
327#define dso_2 (machine.dsos.dsos[2])
328
329 /* Rest the internal dso open counter limit. */
330 reset_fd_limit();
331
332 memset(&machine, 0, sizeof(machine));
333
334 /*
335 * Test scenario:
336 * - create 3 dso objects
337 * - set process file descriptor limit to current
338 * files count + 3
339 * - test that the first dso gets closed when we
340 * reach the files count limit
341 */
342
343 /* Make sure we are able to open 3 fds anyway */
344 TEST_ASSERT_VAL("failed to set file limit",
345 !set_fd_limit((lim)));
346
347 TEST_ASSERT_VAL("failed to create dsos\n",
348 !dsos__create(3, TEST_FILE_SIZE, &machine.dsos));
349
350 /* open dso_0 */
351 fd = dso__data_fd(dso_0, &machine);
352 TEST_ASSERT_VAL("failed to get fd", fd > 0);
353
354 /* open dso_1 */
355 fd = dso__data_fd(dso_1, &machine);
356 TEST_ASSERT_VAL("failed to get fd", fd > 0);
357
358 /*
359 * open extra file descriptor and we just
360 * reached the files count limit
361 */
362 fd_extra = open("/dev/null", O_RDONLY);
363 TEST_ASSERT_VAL("failed to open extra fd", fd_extra > 0);
364
365 /* open dso_2 */
366 fd = dso__data_fd(dso_2, &machine);
367 TEST_ASSERT_VAL("failed to get fd", fd > 0);
368
369 /*
370 * dso_0 should get closed, because we reached
371 * the file descriptor limit
372 */
373 TEST_ASSERT_VAL("failed to close dso_0", dso__data(dso_0)->fd == -1);
374
375 /* open dso_0 */
376 fd = dso__data_fd(dso_0, &machine);
377 TEST_ASSERT_VAL("failed to get fd", fd > 0);
378
379 /*
380 * dso_1 should get closed, because we reached
381 * the file descriptor limit
382 */
383 TEST_ASSERT_VAL("failed to close dso_1", dso__data(dso_1)->fd == -1);
384
385 /* cleanup everything */
386 close(fd_extra);
387 dsos__delete(&machine.dsos);
388
389 /* Make sure we did not leak any file descriptor. */
390 nr_end = open_files_cnt();
391 pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end);
392 TEST_ASSERT_VAL("failed leaking files", nr == nr_end);
393 return 0;
394}
395
396
397static struct test_case tests__dso_data[] = {
398 TEST_CASE("read", dso_data),
399 TEST_CASE("cache", dso_data_cache),
400 TEST_CASE("reopen", dso_data_reopen),
401 { .name = NULL, }
402};
403
404struct test_suite suite__dso_data = {
405 .desc = "DSO data tests",
406 .test_cases = tests__dso_data,
407};