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10a89ef0 | 1 | /* Copyright (c) 2010, 2012, 2013 Nicira, Inc. |
ce887677 BP |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
14 | */ | |
15 | ||
16 | #include <config.h> | |
17 | ||
57c8677b BP |
18 | #include "system-stats.h" |
19 | ||
ce887677 BP |
20 | #include <ctype.h> |
21 | #include <dirent.h> | |
22 | #include <errno.h> | |
23 | #if HAVE_MNTENT_H | |
24 | #include <mntent.h> | |
25 | #endif | |
ce887677 BP |
26 | #include <stdint.h> |
27 | #include <stdio.h> | |
28 | #include <stdlib.h> | |
29 | #if HAVE_SYS_STATVFS_H | |
30 | #include <sys/statvfs.h> | |
31 | #endif | |
32 | #include <unistd.h> | |
33 | ||
34 | #include "daemon.h" | |
35 | #include "dirs.h" | |
36 | #include "dynamic-string.h" | |
35a22d8c BP |
37 | #include "json.h" |
38 | #include "ofpbuf.h" | |
39 | #include "poll-loop.h" | |
ce887677 | 40 | #include "shash.h" |
57c8677b | 41 | #include "smap.h" |
ce887677 BP |
42 | #include "timeval.h" |
43 | #include "vlog.h" | |
44 | ||
d98e6007 | 45 | VLOG_DEFINE_THIS_MODULE(system_stats); |
ce887677 BP |
46 | |
47 | /* #ifdefs make it a pain to maintain code: you have to try to build both ways. | |
48 | * Thus, this file tries to compile as much of the code as possible regardless | |
361906b1 EJ |
49 | * of the target, by writing "if (LINUX_DATAPATH)" instead of "#ifdef |
50 | * __linux__" where this is possible. */ | |
51 | #ifdef LINUX_DATAPATH | |
ce887677 | 52 | #include <asm/param.h> |
ce887677 | 53 | #else |
361906b1 | 54 | #define LINUX_DATAPATH 0 |
ce887677 BP |
55 | #endif |
56 | ||
57 | static void | |
57c8677b | 58 | get_cpu_cores(struct smap *stats) |
ce887677 BP |
59 | { |
60 | long int n_cores = sysconf(_SC_NPROCESSORS_ONLN); | |
61 | if (n_cores > 0) { | |
57c8677b | 62 | smap_add_format(stats, "cpu", "%ld", n_cores); |
ce887677 BP |
63 | } |
64 | } | |
65 | ||
66 | static void | |
57c8677b | 67 | get_load_average(struct smap *stats OVS_UNUSED) |
ce887677 BP |
68 | { |
69 | #if HAVE_GETLOADAVG | |
70 | double loadavg[3]; | |
71 | ||
72 | if (getloadavg(loadavg, 3) == 3) { | |
57c8677b BP |
73 | smap_add_format(stats, "load_average", "%.2f,%.2f,%.2f", |
74 | loadavg[0], loadavg[1], loadavg[2]); | |
ce887677 BP |
75 | } |
76 | #endif | |
77 | } | |
78 | ||
79 | static unsigned int | |
80 | get_page_size(void) | |
81 | { | |
82 | static unsigned int cached; | |
83 | ||
84 | if (!cached) { | |
85 | long int value = sysconf(_SC_PAGESIZE); | |
86 | if (value >= 0) { | |
87 | cached = value; | |
88 | } | |
89 | } | |
90 | ||
91 | return cached; | |
92 | } | |
93 | ||
94 | static void | |
57c8677b | 95 | get_memory_stats(struct smap *stats) |
ce887677 | 96 | { |
361906b1 | 97 | if (!LINUX_DATAPATH) { |
ce887677 | 98 | unsigned int pagesize = get_page_size(); |
a0e21f58 | 99 | #ifdef _SC_PHYS_PAGES |
ce887677 | 100 | long int phys_pages = sysconf(_SC_PHYS_PAGES); |
a0e21f58 YT |
101 | #else |
102 | long int phys_pages = 0; | |
103 | #endif | |
6ca00f6f | 104 | #ifdef _SC_AVPHYS_PAGES |
ce887677 | 105 | long int avphys_pages = sysconf(_SC_AVPHYS_PAGES); |
6ca00f6f ETN |
106 | #else |
107 | long int avphys_pages = 0; | |
108 | #endif | |
ce887677 BP |
109 | int mem_total, mem_used; |
110 | ||
111 | if (pagesize <= 0 || phys_pages <= 0 || avphys_pages <= 0) { | |
112 | return; | |
113 | } | |
114 | ||
115 | mem_total = phys_pages * (pagesize / 1024); | |
116 | mem_used = (phys_pages - avphys_pages) * (pagesize / 1024); | |
57c8677b | 117 | smap_add_format(stats, "memory", "%d,%d", mem_total, mem_used); |
ce887677 BP |
118 | } else { |
119 | static const char file_name[] = "/proc/meminfo"; | |
120 | int mem_used, mem_cache, swap_used; | |
121 | int mem_free = 0; | |
122 | int buffers = 0; | |
123 | int cached = 0; | |
124 | int swap_free = 0; | |
125 | int mem_total = 0; | |
126 | int swap_total = 0; | |
127 | struct shash dict; | |
128 | char line[128]; | |
129 | FILE *stream; | |
130 | ||
131 | stream = fopen(file_name, "r"); | |
132 | if (!stream) { | |
10a89ef0 BP |
133 | VLOG_WARN_ONCE("%s: open failed (%s)", |
134 | file_name, ovs_strerror(errno)); | |
ce887677 BP |
135 | return; |
136 | } | |
137 | ||
138 | shash_init(&dict); | |
139 | shash_add(&dict, "MemTotal", &mem_total); | |
140 | shash_add(&dict, "MemFree", &mem_free); | |
141 | shash_add(&dict, "Buffers", &buffers); | |
142 | shash_add(&dict, "Cached", &cached); | |
143 | shash_add(&dict, "SwapTotal", &swap_total); | |
144 | shash_add(&dict, "SwapFree", &swap_free); | |
145 | while (fgets(line, sizeof line, stream)) { | |
146 | char key[16]; | |
147 | int value; | |
148 | ||
149 | if (sscanf(line, "%15[^:]: %u", key, &value) == 2) { | |
150 | int *valuep = shash_find_data(&dict, key); | |
151 | if (valuep) { | |
152 | *valuep = value; | |
153 | } | |
154 | } | |
155 | } | |
156 | fclose(stream); | |
157 | shash_destroy(&dict); | |
158 | ||
159 | mem_used = mem_total - mem_free; | |
160 | mem_cache = buffers + cached; | |
161 | swap_used = swap_total - swap_free; | |
57c8677b BP |
162 | smap_add_format(stats, "memory", "%d,%d,%d,%d,%d", |
163 | mem_total, mem_used, mem_cache, swap_total, swap_used); | |
ce887677 BP |
164 | } |
165 | } | |
166 | ||
167 | /* Returns the time at which the system booted, as the number of milliseconds | |
168 | * since the epoch, or 0 if the time of boot cannot be determined. */ | |
169 | static long long int | |
170 | get_boot_time(void) | |
171 | { | |
172 | static long long int cache_expiration = LLONG_MIN; | |
173 | static long long int boot_time; | |
174 | ||
cb22974d | 175 | ovs_assert(LINUX_DATAPATH); |
ce887677 BP |
176 | |
177 | if (time_msec() >= cache_expiration) { | |
178 | static const char stat_file[] = "/proc/stat"; | |
179 | char line[128]; | |
180 | FILE *stream; | |
181 | ||
182 | cache_expiration = time_msec() + 5 * 1000; | |
183 | ||
184 | stream = fopen(stat_file, "r"); | |
185 | if (!stream) { | |
10a89ef0 BP |
186 | VLOG_ERR_ONCE("%s: open failed (%s)", |
187 | stat_file, ovs_strerror(errno)); | |
ce887677 BP |
188 | return boot_time; |
189 | } | |
190 | ||
191 | while (fgets(line, sizeof line, stream)) { | |
192 | long long int btime; | |
193 | if (sscanf(line, "btime %lld", &btime) == 1) { | |
194 | boot_time = btime * 1000; | |
195 | goto done; | |
196 | } | |
197 | } | |
198 | VLOG_ERR_ONCE("%s: btime not found", stat_file); | |
199 | done: | |
200 | fclose(stream); | |
201 | } | |
202 | return boot_time; | |
203 | } | |
204 | ||
205 | static unsigned long long int | |
206 | ticks_to_ms(unsigned long long int ticks) | |
207 | { | |
cb22974d | 208 | ovs_assert(LINUX_DATAPATH); |
ce887677 BP |
209 | |
210 | #ifndef USER_HZ | |
211 | #define USER_HZ 100 | |
212 | #endif | |
213 | ||
214 | #if USER_HZ == 100 /* Common case. */ | |
215 | return ticks * (1000 / USER_HZ); | |
216 | #else /* Alpha and some other architectures. */ | |
217 | double factor = 1000.0 / USER_HZ; | |
218 | return ticks * factor + 0.5; | |
219 | #endif | |
220 | } | |
221 | ||
222 | struct raw_process_info { | |
223 | unsigned long int vsz; /* Virtual size, in kB. */ | |
224 | unsigned long int rss; /* Resident set size, in kB. */ | |
225 | long long int uptime; /* ms since started. */ | |
226 | long long int cputime; /* ms of CPU used during 'uptime'. */ | |
227 | pid_t ppid; /* Parent. */ | |
228 | char name[18]; /* Name (surrounded by parentheses). */ | |
229 | }; | |
230 | ||
231 | static bool | |
232 | get_raw_process_info(pid_t pid, struct raw_process_info *raw) | |
233 | { | |
234 | unsigned long long int vsize, rss, start_time, utime, stime; | |
235 | long long int start_msec; | |
236 | unsigned long ppid; | |
237 | char file_name[128]; | |
238 | FILE *stream; | |
239 | int n; | |
240 | ||
cb22974d | 241 | ovs_assert(LINUX_DATAPATH); |
ce887677 BP |
242 | |
243 | sprintf(file_name, "/proc/%lu/stat", (unsigned long int) pid); | |
244 | stream = fopen(file_name, "r"); | |
245 | if (!stream) { | |
10a89ef0 BP |
246 | VLOG_ERR_ONCE("%s: open failed (%s)", |
247 | file_name, ovs_strerror(errno)); | |
ce887677 BP |
248 | return false; |
249 | } | |
250 | ||
251 | n = fscanf(stream, | |
252 | "%*d " /* (1. pid) */ | |
253 | "%17s " /* 2. process name */ | |
254 | "%*c " /* (3. state) */ | |
255 | "%lu " /* 4. ppid */ | |
256 | "%*d " /* (5. pgid) */ | |
257 | "%*d " /* (6. sid) */ | |
258 | "%*d " /* (7. tty_nr) */ | |
259 | "%*d " /* (8. tty_pgrp) */ | |
260 | "%*u " /* (9. flags) */ | |
261 | "%*u " /* (10. min_flt) */ | |
262 | "%*u " /* (11. cmin_flt) */ | |
263 | "%*u " /* (12. maj_flt) */ | |
264 | "%*u " /* (13. cmaj_flt) */ | |
265 | "%llu " /* 14. utime */ | |
266 | "%llu " /* 15. stime */ | |
267 | "%*d " /* (16. cutime) */ | |
268 | "%*d " /* (17. cstime) */ | |
269 | "%*d " /* (18. priority) */ | |
270 | "%*d " /* (19. nice) */ | |
271 | "%*d " /* (20. num_threads) */ | |
272 | "%*d " /* (21. always 0) */ | |
273 | "%llu " /* 22. start_time */ | |
274 | "%llu " /* 23. vsize */ | |
275 | "%llu " /* 24. rss */ | |
276 | #if 0 | |
277 | /* These are here for documentation but #if'd out to save | |
278 | * actually parsing them from the stream for no benefit. */ | |
279 | "%*lu " /* (25. rsslim) */ | |
280 | "%*lu " /* (26. start_code) */ | |
281 | "%*lu " /* (27. end_code) */ | |
282 | "%*lu " /* (28. start_stack) */ | |
283 | "%*lu " /* (29. esp) */ | |
284 | "%*lu " /* (30. eip) */ | |
285 | "%*lu " /* (31. pending signals) */ | |
286 | "%*lu " /* (32. blocked signals) */ | |
287 | "%*lu " /* (33. ignored signals) */ | |
288 | "%*lu " /* (34. caught signals) */ | |
289 | "%*lu " /* (35. whcan) */ | |
290 | "%*lu " /* (36. always 0) */ | |
291 | "%*lu " /* (37. always 0) */ | |
292 | "%*d " /* (38. exit_signal) */ | |
293 | "%*d " /* (39. task_cpu) */ | |
294 | "%*u " /* (40. rt_priority) */ | |
295 | "%*u " /* (41. policy) */ | |
296 | "%*llu " /* (42. blkio_ticks) */ | |
297 | "%*lu " /* (43. gtime) */ | |
298 | "%*ld" /* (44. cgtime) */ | |
299 | #endif | |
300 | , raw->name, &ppid, &utime, &stime, &start_time, &vsize, &rss); | |
301 | fclose(stream); | |
302 | if (n != 7) { | |
303 | VLOG_ERR_ONCE("%s: fscanf failed", file_name); | |
304 | return false; | |
305 | } | |
306 | ||
307 | start_msec = get_boot_time() + ticks_to_ms(start_time); | |
308 | ||
309 | raw->vsz = vsize / 1024; | |
310 | raw->rss = rss * (getpagesize() / 1024); | |
311 | raw->uptime = time_wall_msec() - start_msec; | |
312 | raw->cputime = ticks_to_ms(utime + stime); | |
313 | raw->ppid = ppid; | |
314 | ||
315 | return true; | |
316 | } | |
317 | ||
318 | static int | |
319 | count_crashes(pid_t pid) | |
320 | { | |
321 | char file_name[128]; | |
322 | const char *paren; | |
323 | char line[128]; | |
324 | int crashes = 0; | |
325 | FILE *stream; | |
326 | ||
cb22974d | 327 | ovs_assert(LINUX_DATAPATH); |
ce887677 BP |
328 | |
329 | sprintf(file_name, "/proc/%lu/cmdline", (unsigned long int) pid); | |
330 | stream = fopen(file_name, "r"); | |
331 | if (!stream) { | |
10a89ef0 | 332 | VLOG_WARN_ONCE("%s: open failed (%s)", file_name, ovs_strerror(errno)); |
ce887677 BP |
333 | goto exit; |
334 | } | |
335 | ||
336 | if (!fgets(line, sizeof line, stream)) { | |
337 | VLOG_WARN_ONCE("%s: read failed (%s)", file_name, | |
10a89ef0 | 338 | feof(stream) ? "end of file" : ovs_strerror(errno)); |
ce887677 BP |
339 | goto exit_close; |
340 | } | |
341 | ||
342 | paren = strchr(line, '('); | |
343 | if (paren) { | |
344 | int x; | |
345 | if (sscanf(paren + 1, "%d", &x) == 1) { | |
346 | crashes = x; | |
347 | } | |
348 | } | |
349 | ||
350 | exit_close: | |
351 | fclose(stream); | |
352 | exit: | |
353 | return crashes; | |
354 | } | |
355 | ||
356 | struct process_info { | |
357 | unsigned long int vsz; /* Virtual size, in kB. */ | |
358 | unsigned long int rss; /* Resident set size, in kB. */ | |
359 | long long int booted; /* ms since monitor started. */ | |
360 | int crashes; /* # of crashes (usually 0). */ | |
361 | long long int uptime; /* ms since last (re)started by monitor. */ | |
362 | long long int cputime; /* ms of CPU used during 'uptime'. */ | |
363 | }; | |
364 | ||
365 | static bool | |
366 | get_process_info(pid_t pid, struct process_info *pinfo) | |
367 | { | |
368 | struct raw_process_info child; | |
369 | ||
cb22974d | 370 | ovs_assert(LINUX_DATAPATH); |
ce887677 BP |
371 | if (!get_raw_process_info(pid, &child)) { |
372 | return false; | |
373 | } | |
374 | ||
375 | pinfo->vsz = child.vsz; | |
376 | pinfo->rss = child.rss; | |
377 | pinfo->booted = child.uptime; | |
378 | pinfo->crashes = 0; | |
379 | pinfo->uptime = child.uptime; | |
380 | pinfo->cputime = child.cputime; | |
381 | ||
382 | if (child.ppid) { | |
383 | struct raw_process_info parent; | |
384 | ||
385 | get_raw_process_info(child.ppid, &parent); | |
386 | if (!strcmp(child.name, parent.name)) { | |
387 | pinfo->booted = parent.uptime; | |
388 | pinfo->crashes = count_crashes(child.ppid); | |
389 | } | |
390 | } | |
391 | ||
392 | return true; | |
393 | } | |
394 | ||
395 | static void | |
57c8677b | 396 | get_process_stats(struct smap *stats) |
ce887677 BP |
397 | { |
398 | struct dirent *de; | |
399 | DIR *dir; | |
400 | ||
b43c6fe2 | 401 | dir = opendir(ovs_rundir()); |
ce887677 | 402 | if (!dir) { |
10a89ef0 BP |
403 | VLOG_ERR_ONCE("%s: open failed (%s)", |
404 | ovs_rundir(), ovs_strerror(errno)); | |
ce887677 BP |
405 | return; |
406 | } | |
407 | ||
408 | while ((de = readdir(dir)) != NULL) { | |
409 | struct process_info pinfo; | |
ce887677 BP |
410 | char *file_name; |
411 | char *extension; | |
57c8677b | 412 | char *key; |
ce887677 BP |
413 | pid_t pid; |
414 | ||
415 | #ifdef _DIRENT_HAVE_D_TYPE | |
416 | if (de->d_type != DT_UNKNOWN && de->d_type != DT_REG) { | |
417 | continue; | |
418 | } | |
419 | #endif | |
420 | ||
421 | extension = strrchr(de->d_name, '.'); | |
422 | if (!extension || strcmp(extension, ".pid")) { | |
423 | continue; | |
424 | } | |
425 | ||
b43c6fe2 | 426 | file_name = xasprintf("%s/%s", ovs_rundir(), de->d_name); |
ce887677 BP |
427 | pid = read_pidfile(file_name); |
428 | free(file_name); | |
8da7ca87 | 429 | if (pid < 0) { |
ce887677 BP |
430 | continue; |
431 | } | |
432 | ||
433 | key = xasprintf("process_%.*s", | |
434 | (int) (extension - de->d_name), de->d_name); | |
57c8677b | 435 | if (!smap_get(stats, key)) { |
361906b1 | 436 | if (LINUX_DATAPATH && get_process_info(pid, &pinfo)) { |
57c8677b BP |
437 | smap_add_format(stats, key, "%lu,%lu,%lld,%d,%lld,%lld", |
438 | pinfo.vsz, pinfo.rss, pinfo.cputime, | |
439 | pinfo.crashes, pinfo.booted, pinfo.uptime); | |
440 | } else { | |
441 | smap_add(stats, key, ""); | |
442 | } | |
ce887677 | 443 | } |
57c8677b | 444 | free(key); |
ce887677 BP |
445 | } |
446 | ||
447 | closedir(dir); | |
448 | } | |
449 | ||
450 | static void | |
57c8677b | 451 | get_filesys_stats(struct smap *stats OVS_UNUSED) |
ce887677 | 452 | { |
ffb1cfd1 | 453 | #if HAVE_GETMNTENT_R && HAVE_STATVFS |
ce887677 | 454 | static const char file_name[] = "/etc/mtab"; |
ffb1cfd1 | 455 | struct mntent mntent; |
ce887677 | 456 | struct mntent *me; |
ffb1cfd1 | 457 | char buf[4096]; |
ce887677 BP |
458 | FILE *stream; |
459 | struct ds s; | |
460 | ||
461 | stream = setmntent(file_name, "r"); | |
462 | if (!stream) { | |
10a89ef0 | 463 | VLOG_ERR_ONCE("%s: open failed (%s)", file_name, ovs_strerror(errno)); |
ce887677 BP |
464 | return; |
465 | } | |
466 | ||
467 | ds_init(&s); | |
ffb1cfd1 | 468 | while ((me = getmntent_r(stream, &mntent, buf, sizeof buf)) != NULL) { |
ce887677 BP |
469 | unsigned long long int total, free; |
470 | struct statvfs vfs; | |
471 | char *p; | |
472 | ||
473 | /* Skip non-local and read-only filesystems. */ | |
474 | if (strncmp(me->mnt_fsname, "/dev", 4) | |
475 | || !strstr(me->mnt_opts, "rw")) { | |
476 | continue; | |
477 | } | |
478 | ||
479 | /* Given the mount point we can stat the file system. */ | |
480 | if (statvfs(me->mnt_dir, &vfs) && vfs.f_flag & ST_RDONLY) { | |
481 | /* That's odd... */ | |
482 | continue; | |
483 | } | |
484 | ||
485 | /* Now format the data. */ | |
486 | if (s.length) { | |
487 | ds_put_char(&s, ' '); | |
488 | } | |
489 | for (p = me->mnt_dir; *p != '\0'; p++) { | |
490 | ds_put_char(&s, *p == ' ' || *p == ',' ? '_' : *p); | |
491 | } | |
492 | total = (unsigned long long int) vfs.f_frsize * vfs.f_blocks / 1024; | |
493 | free = (unsigned long long int) vfs.f_frsize * vfs.f_bfree / 1024; | |
494 | ds_put_format(&s, ",%llu,%llu", total, total - free); | |
495 | } | |
496 | endmntent(stream); | |
497 | ||
498 | if (s.length) { | |
57c8677b | 499 | smap_add(stats, "file_systems", ds_cstr(&s)); |
ce887677 BP |
500 | } |
501 | ds_destroy(&s); | |
ffb1cfd1 | 502 | #endif /* HAVE_GETMNTENT_R && HAVE_STATVFS */ |
ce887677 | 503 | } |
35a22d8c BP |
504 | \f |
505 | #define SYSTEM_STATS_INTERVAL (5 * 1000) /* In milliseconds. */ | |
ce887677 | 506 | |
5a13f2f4 BP |
507 | /* The next time to wake up, or LLONG_MAX if stats are disabled. */ |
508 | static long long int next_refresh = LLONG_MAX; | |
35a22d8c | 509 | |
5a13f2f4 | 510 | /* Enables or disables system stats collection, according to 'enable'. */ |
ce887677 | 511 | void |
5a13f2f4 | 512 | system_stats_enable(bool enable) |
35a22d8c | 513 | { |
5a13f2f4 BP |
514 | if (!enable) { |
515 | next_refresh = LLONG_MAX; | |
516 | } else if (next_refresh == LLONG_MAX) { | |
517 | next_refresh = time_msec(); | |
35a22d8c BP |
518 | } |
519 | } | |
520 | ||
521 | /* Tries to obtain a new snapshot of system stats every SYSTEM_STATS_INTERVAL | |
522 | * milliseconds. | |
523 | * | |
524 | * When a new snapshot is available (which only occurs if system stats are | |
525 | * enabled), returns it as an smap owned by the caller. The caller must use | |
5a13f2f4 | 526 | * both smap_destroy() and free() to completely free the returned data. |
35a22d8c BP |
527 | * |
528 | * When no new snapshot is available, returns NULL. */ | |
529 | struct smap * | |
530 | system_stats_run(void) | |
ce887677 | 531 | { |
5a13f2f4 BP |
532 | if (time_msec() >= next_refresh) { |
533 | struct smap *stats; | |
534 | ||
535 | stats = xmalloc(sizeof *stats); | |
536 | smap_init(stats); | |
537 | get_cpu_cores(stats); | |
538 | get_load_average(stats); | |
539 | get_memory_stats(stats); | |
540 | get_process_stats(stats); | |
541 | get_filesys_stats(stats); | |
542 | ||
543 | next_refresh = time_msec() + SYSTEM_STATS_INTERVAL; | |
544 | ||
545 | return stats; | |
35a22d8c BP |
546 | } |
547 | ||
548 | return NULL; | |
549 | } | |
550 | ||
551 | /* Causes poll_block() to wake up when system_stats_run() needs to be | |
552 | * called. */ | |
553 | void | |
554 | system_stats_wait(void) | |
555 | { | |
5a13f2f4 | 556 | if (next_refresh != LLONG_MAX) { |
35a22d8c | 557 | poll_timer_wait_until(next_refresh); |
35a22d8c BP |
558 | } |
559 | } |