Commit | Line | Data |
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c9fb4c5b JA |
1 | #include <stdio.h> |
2 | #include <errno.h> | |
3 | #include <assert.h> | |
4 | #include <stdlib.h> | |
5 | #include <stddef.h> | |
6 | #include <signal.h> | |
7 | #include <inttypes.h> | |
8 | ||
9 | #include <sys/types.h> | |
10 | #include <sys/stat.h> | |
11 | #include <sys/ioctl.h> | |
12 | #include <sys/syscall.h> | |
13 | #include <sys/resource.h> | |
c3e2fc25 | 14 | #include <sys/mman.h> |
e31b8288 | 15 | #include <sys/uio.h> |
c9fb4c5b JA |
16 | #include <linux/fs.h> |
17 | #include <fcntl.h> | |
18 | #include <unistd.h> | |
c9fb4c5b JA |
19 | #include <string.h> |
20 | #include <pthread.h> | |
21 | #include <sched.h> | |
22 | ||
74efb029 | 23 | #include "../arch/arch.h" |
57fa61f0 | 24 | #include "../lib/types.h" |
e31b8288 | 25 | #include "../os/io_uring.h" |
ac122fea | 26 | |
e31b8288 | 27 | #define barrier() __asm__ __volatile__("": : :"memory") |
c3e2fc25 | 28 | |
e31b8288 | 29 | #define min(a, b) ((a < b) ? (a) : (b)) |
c3e2fc25 | 30 | |
e31b8288 | 31 | struct io_sq_ring { |
e2239016 JA |
32 | unsigned *head; |
33 | unsigned *tail; | |
34 | unsigned *ring_mask; | |
35 | unsigned *ring_entries; | |
ce1705de | 36 | unsigned *flags; |
e2239016 | 37 | unsigned *array; |
c9fb4c5b JA |
38 | }; |
39 | ||
e31b8288 | 40 | struct io_cq_ring { |
e2239016 JA |
41 | unsigned *head; |
42 | unsigned *tail; | |
43 | unsigned *ring_mask; | |
44 | unsigned *ring_entries; | |
f0403f94 | 45 | struct io_uring_cqe *cqes; |
c9fb4c5b JA |
46 | }; |
47 | ||
701d1277 | 48 | #define DEPTH 128 |
c9fb4c5b | 49 | |
701d1277 JA |
50 | #define BATCH_SUBMIT 64 |
51 | #define BATCH_COMPLETE 64 | |
c9fb4c5b JA |
52 | |
53 | #define BS 4096 | |
54 | ||
a7086591 JA |
55 | #define MAX_FDS 16 |
56 | ||
c3e2fc25 | 57 | static unsigned sq_ring_mask, cq_ring_mask; |
e39c34dc | 58 | |
a7086591 JA |
59 | struct file { |
60 | unsigned long max_blocks; | |
701d1277 | 61 | unsigned pending_ios; |
a7086591 JA |
62 | int fd; |
63 | }; | |
64 | ||
c9fb4c5b JA |
65 | struct submitter { |
66 | pthread_t thread; | |
f310970e | 67 | int ring_fd; |
c9fb4c5b | 68 | struct drand48_data rand; |
e31b8288 | 69 | struct io_sq_ring sq_ring; |
f0403f94 | 70 | struct io_uring_sqe *sqes; |
c3e2fc25 | 71 | struct iovec iovecs[DEPTH]; |
e31b8288 | 72 | struct io_cq_ring cq_ring; |
c9fb4c5b JA |
73 | int inflight; |
74 | unsigned long reaps; | |
75 | unsigned long done; | |
76 | unsigned long calls; | |
305c06ce | 77 | unsigned long cachehit, cachemiss; |
c9fb4c5b | 78 | volatile int finish; |
701d1277 | 79 | |
a7086591 JA |
80 | struct file files[MAX_FDS]; |
81 | unsigned nr_files; | |
82 | unsigned cur_file; | |
c9fb4c5b JA |
83 | }; |
84 | ||
85 | static struct submitter submitters[1]; | |
86 | static volatile int finish; | |
87 | ||
f0403f94 | 88 | static int polled = 1; /* use IO polling */ |
701d1277 | 89 | static int fixedbufs = 1; /* use fixed user buffers */ |
f0403f94 | 90 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
91 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
92 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
c9fb4c5b | 93 | |
2ea53ca3 | 94 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 95 | { |
2ea53ca3 JA |
96 | struct io_uring_register_buffers reg = { |
97 | .iovecs = s->iovecs, | |
98 | .nr_iovecs = DEPTH | |
99 | }; | |
100 | ||
101 | return syscall(__NR_sys_io_uring_register, s->ring_fd, | |
102 | IORING_REGISTER_BUFFERS, ®); | |
103 | } | |
104 | ||
105 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) | |
106 | { | |
107 | return syscall(__NR_sys_io_uring_setup, entries, p); | |
c9fb4c5b JA |
108 | } |
109 | ||
c3e2fc25 JA |
110 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
111 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 112 | { |
f310970e JA |
113 | return syscall(__NR_sys_io_uring_enter, s->ring_fd, to_submit, |
114 | min_complete, flags); | |
c9fb4c5b JA |
115 | } |
116 | ||
117 | static int gettid(void) | |
118 | { | |
119 | return syscall(__NR_gettid); | |
120 | } | |
121 | ||
701d1277 JA |
122 | static unsigned file_depth(struct submitter *s) |
123 | { | |
124 | return (DEPTH + s->nr_files - 1) / s->nr_files; | |
125 | } | |
126 | ||
a7086591 | 127 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 128 | { |
f0403f94 | 129 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 130 | unsigned long offset; |
a7086591 | 131 | struct file *f; |
c9fb4c5b JA |
132 | long r; |
133 | ||
701d1277 JA |
134 | if (s->nr_files == 1) { |
135 | f = &s->files[0]; | |
136 | } else { | |
137 | f = &s->files[s->cur_file]; | |
138 | if (f->pending_ios >= file_depth(s)) { | |
139 | s->cur_file++; | |
140 | if (s->cur_file == s->nr_files) | |
141 | s->cur_file = 0; | |
142 | } | |
143 | } | |
144 | f->pending_ios++; | |
a7086591 | 145 | |
c9fb4c5b | 146 | lrand48_r(&s->rand, &r); |
a7086591 | 147 | offset = (r % (f->max_blocks - 1)) * BS; |
c9fb4c5b | 148 | |
2ea53ca3 JA |
149 | sqe->flags = 0; |
150 | sqe->opcode = IORING_OP_READV; | |
f0403f94 | 151 | if (fixedbufs) { |
f0403f94 JA |
152 | sqe->addr = s->iovecs[index].iov_base; |
153 | sqe->len = BS; | |
2ea53ca3 JA |
154 | sqe->buf_index = index; |
155 | sqe->flags |= IOSQE_FIXED_BUFFER; | |
f0403f94 | 156 | } else { |
f0403f94 JA |
157 | sqe->addr = &s->iovecs[index]; |
158 | sqe->len = 1; | |
2ea53ca3 | 159 | sqe->buf_index = 0; |
f0403f94 | 160 | } |
f0403f94 | 161 | sqe->ioprio = 0; |
a7086591 | 162 | sqe->fd = f->fd; |
f0403f94 | 163 | sqe->off = offset; |
701d1277 | 164 | sqe->data = (unsigned long) f; |
c9fb4c5b JA |
165 | } |
166 | ||
a7086591 | 167 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 168 | { |
e31b8288 | 169 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 170 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 171 | |
c3e2fc25 | 172 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
173 | do { |
174 | next_tail++; | |
c9fb4c5b | 175 | barrier(); |
c3e2fc25 | 176 | if (next_tail == *ring->head) |
c9fb4c5b JA |
177 | break; |
178 | ||
e39c34dc | 179 | index = tail & sq_ring_mask; |
a7086591 | 180 | init_io(s, index); |
c3e2fc25 | 181 | ring->array[index] = index; |
c9fb4c5b JA |
182 | prepped++; |
183 | tail = next_tail; | |
184 | } while (prepped < max_ios); | |
185 | ||
c3e2fc25 | 186 | if (*ring->tail != tail) { |
f0403f94 | 187 | /* order tail store with writes to sqes above */ |
c9fb4c5b | 188 | barrier(); |
c3e2fc25 | 189 | *ring->tail = tail; |
c9fb4c5b JA |
190 | barrier(); |
191 | } | |
192 | return prepped; | |
193 | } | |
194 | ||
a7086591 | 195 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
196 | { |
197 | struct stat st; | |
198 | ||
a7086591 | 199 | if (fstat(f->fd, &st) < 0) |
c9fb4c5b JA |
200 | return -1; |
201 | if (S_ISBLK(st.st_mode)) { | |
202 | unsigned long long bytes; | |
203 | ||
a7086591 | 204 | if (ioctl(f->fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
205 | return -1; |
206 | ||
a7086591 | 207 | f->max_blocks = bytes / BS; |
c9fb4c5b JA |
208 | return 0; |
209 | } else if (S_ISREG(st.st_mode)) { | |
a7086591 | 210 | f->max_blocks = st.st_size / BS; |
c9fb4c5b JA |
211 | return 0; |
212 | } | |
213 | ||
214 | return -1; | |
215 | } | |
216 | ||
217 | static int reap_events(struct submitter *s) | |
218 | { | |
e31b8288 | 219 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 220 | struct io_uring_cqe *cqe; |
e2239016 | 221 | unsigned head, reaped = 0; |
c9fb4c5b | 222 | |
c3e2fc25 | 223 | head = *ring->head; |
c9fb4c5b | 224 | do { |
701d1277 JA |
225 | struct file *f; |
226 | ||
c9fb4c5b | 227 | barrier(); |
c3e2fc25 | 228 | if (head == *ring->tail) |
c9fb4c5b | 229 | break; |
f0403f94 | 230 | cqe = &ring->cqes[head & cq_ring_mask]; |
701d1277 JA |
231 | f = (struct file *) cqe->data; |
232 | f->pending_ios--; | |
f0403f94 | 233 | if (cqe->res != BS) { |
f0403f94 | 234 | printf("io: unexpected ret=%d\n", cqe->res); |
c9fb4c5b JA |
235 | return -1; |
236 | } | |
f0403f94 | 237 | if (cqe->flags & IOCQE_FLAG_CACHEHIT) |
305c06ce JA |
238 | s->cachehit++; |
239 | else | |
240 | s->cachemiss++; | |
c9fb4c5b JA |
241 | reaped++; |
242 | head++; | |
c9fb4c5b JA |
243 | } while (1); |
244 | ||
245 | s->inflight -= reaped; | |
c3e2fc25 | 246 | *ring->head = head; |
c9fb4c5b JA |
247 | barrier(); |
248 | return reaped; | |
249 | } | |
250 | ||
251 | static void *submitter_fn(void *data) | |
252 | { | |
253 | struct submitter *s = data; | |
ce1705de | 254 | struct io_sq_ring *ring = &s->sq_ring; |
a7086591 | 255 | int ret, prepped; |
c9fb4c5b JA |
256 | |
257 | printf("submitter=%d\n", gettid()); | |
258 | ||
c9fb4c5b JA |
259 | srand48_r(pthread_self(), &s->rand); |
260 | ||
261 | prepped = 0; | |
262 | do { | |
f310970e | 263 | int to_wait, to_submit, this_reap, to_prep; |
c9fb4c5b | 264 | |
f310970e JA |
265 | if (!prepped && s->inflight < DEPTH) { |
266 | to_prep = min(DEPTH - s->inflight, BATCH_SUBMIT); | |
a7086591 | 267 | prepped = prep_more_ios(s, to_prep); |
f310970e | 268 | } |
c9fb4c5b JA |
269 | s->inflight += prepped; |
270 | submit_more: | |
271 | to_submit = prepped; | |
272 | submit: | |
273 | if (s->inflight + BATCH_SUBMIT < DEPTH) | |
274 | to_wait = 0; | |
275 | else | |
276 | to_wait = min(s->inflight + to_submit, BATCH_COMPLETE); | |
277 | ||
ce1705de JA |
278 | /* |
279 | * Only need to call io_uring_enter if we're not using SQ thread | |
280 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
281 | */ | |
282 | if (!sq_thread_poll || (*ring->flags & IORING_SQ_NEED_WAKEUP)) { | |
283 | ret = io_uring_enter(s, to_submit, to_wait, | |
284 | IORING_ENTER_GETEVENTS); | |
285 | s->calls++; | |
286 | } | |
c9fb4c5b | 287 | |
ce1705de JA |
288 | /* |
289 | * For non SQ thread poll, we already got the events we needed | |
290 | * through the io_uring_enter() above. For SQ thread poll, we | |
291 | * need to loop here until we find enough events. | |
292 | */ | |
293 | this_reap = 0; | |
294 | do { | |
295 | int r; | |
296 | r = reap_events(s); | |
297 | if (r == -1) | |
298 | break; | |
299 | else if (r > 0) | |
300 | this_reap += r; | |
301 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
302 | s->reaps += this_reap; |
303 | ||
304 | if (ret >= 0) { | |
305 | if (!ret) { | |
306 | to_submit = 0; | |
307 | if (s->inflight) | |
308 | goto submit; | |
309 | continue; | |
310 | } else if (ret < to_submit) { | |
311 | int diff = to_submit - ret; | |
312 | ||
313 | s->done += ret; | |
314 | prepped -= diff; | |
315 | goto submit_more; | |
316 | } | |
317 | s->done += ret; | |
318 | prepped = 0; | |
319 | continue; | |
320 | } else if (ret < 0) { | |
ac122fea | 321 | if (errno == EAGAIN) { |
c9fb4c5b JA |
322 | if (s->finish) |
323 | break; | |
324 | if (this_reap) | |
325 | goto submit; | |
c9fb4c5b JA |
326 | to_submit = 0; |
327 | goto submit; | |
328 | } | |
ac122fea | 329 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
330 | break; |
331 | } | |
332 | } while (!s->finish); | |
a7086591 | 333 | |
c9fb4c5b JA |
334 | finish = 1; |
335 | return NULL; | |
336 | } | |
337 | ||
338 | static void sig_int(int sig) | |
339 | { | |
340 | printf("Exiting on signal %d\n", sig); | |
341 | submitters[0].finish = 1; | |
342 | finish = 1; | |
343 | } | |
344 | ||
345 | static void arm_sig_int(void) | |
346 | { | |
347 | struct sigaction act; | |
348 | ||
349 | memset(&act, 0, sizeof(act)); | |
350 | act.sa_handler = sig_int; | |
351 | act.sa_flags = SA_RESTART; | |
352 | sigaction(SIGINT, &act, NULL); | |
353 | } | |
354 | ||
c3e2fc25 JA |
355 | static int setup_ring(struct submitter *s) |
356 | { | |
e31b8288 JA |
357 | struct io_sq_ring *sring = &s->sq_ring; |
358 | struct io_cq_ring *cring = &s->cq_ring; | |
359 | struct io_uring_params p; | |
2ea53ca3 | 360 | int ret, fd; |
c3e2fc25 | 361 | void *ptr; |
c3e2fc25 JA |
362 | |
363 | memset(&p, 0, sizeof(p)); | |
364 | ||
0e47f11b JA |
365 | if (polled) |
366 | p.flags |= IORING_SETUP_IOPOLL; | |
3d7d00a3 | 367 | if (sq_thread_poll) { |
2ea53ca3 | 368 | p.flags |= IORING_SETUP_SQPOLL; |
3d7d00a3 JA |
369 | if (sq_thread_cpu != -1) |
370 | p.flags |= IORING_SETUP_SQ_AFF; | |
c3e2fc25 JA |
371 | } |
372 | ||
2ea53ca3 | 373 | fd = io_uring_setup(DEPTH, &p); |
c3e2fc25 JA |
374 | if (fd < 0) { |
375 | perror("io_uring_setup"); | |
376 | return 1; | |
377 | } | |
f310970e | 378 | s->ring_fd = fd; |
2ea53ca3 JA |
379 | |
380 | if (fixedbufs) { | |
381 | ret = io_uring_register_buffers(s); | |
382 | if (ret < 0) { | |
383 | perror("io_uring_register"); | |
384 | return 1; | |
385 | } | |
386 | } | |
387 | ||
e2239016 | 388 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
389 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
390 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
391 | printf("sq_ring ptr = 0x%p\n", ptr); |
392 | sring->head = ptr + p.sq_off.head; | |
393 | sring->tail = ptr + p.sq_off.tail; | |
394 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
395 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 396 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 397 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
398 | sq_ring_mask = *sring->ring_mask; |
399 | ||
f0403f94 | 400 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 401 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
402 | IORING_OFF_SQES); |
403 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 404 | |
f0403f94 | 405 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
406 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
407 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
408 | printf("cq_ring ptr = 0x%p\n", ptr); |
409 | cring->head = ptr + p.cq_off.head; | |
410 | cring->tail = ptr + p.cq_off.tail; | |
411 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
412 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 413 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
414 | cq_ring_mask = *cring->ring_mask; |
415 | return 0; | |
416 | } | |
417 | ||
c9fb4c5b JA |
418 | int main(int argc, char *argv[]) |
419 | { | |
420 | struct submitter *s = &submitters[0]; | |
305c06ce | 421 | unsigned long done, calls, reap, cache_hit, cache_miss; |
a7086591 | 422 | int err, i, flags, fd; |
c9fb4c5b | 423 | struct rlimit rlim; |
c3e2fc25 | 424 | void *ret; |
c9fb4c5b JA |
425 | |
426 | if (argc < 2) { | |
427 | printf("%s: filename\n", argv[0]); | |
428 | return 1; | |
429 | } | |
430 | ||
701d1277 | 431 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
432 | if (!buffered) |
433 | flags |= O_DIRECT; | |
434 | ||
435 | i = 1; | |
436 | while (i < argc) { | |
437 | struct file *f = &s->files[s->nr_files]; | |
438 | ||
439 | fd = open(argv[i], flags); | |
440 | if (fd < 0) { | |
441 | perror("open"); | |
442 | return 1; | |
443 | } | |
444 | f->fd = fd; | |
445 | if (get_file_size(f)) { | |
446 | printf("failed getting size of device/file\n"); | |
447 | return 1; | |
448 | } | |
449 | if (f->max_blocks <= 1) { | |
450 | printf("Zero file/device size?\n"); | |
451 | return 1; | |
452 | } | |
453 | f->max_blocks--; | |
454 | ||
455 | printf("Added file %s\n", argv[i]); | |
456 | s->nr_files++; | |
457 | i++; | |
458 | } | |
459 | ||
c9fb4c5b JA |
460 | rlim.rlim_cur = RLIM_INFINITY; |
461 | rlim.rlim_max = RLIM_INFINITY; | |
462 | if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { | |
463 | perror("setrlimit"); | |
464 | return 1; | |
465 | } | |
466 | ||
467 | arm_sig_int(); | |
468 | ||
c3e2fc25 JA |
469 | for (i = 0; i < DEPTH; i++) { |
470 | void *buf; | |
c9fb4c5b | 471 | |
c3e2fc25 | 472 | if (posix_memalign(&buf, BS, BS)) { |
c9fb4c5b JA |
473 | printf("failed alloc\n"); |
474 | return 1; | |
475 | } | |
c3e2fc25 JA |
476 | s->iovecs[i].iov_base = buf; |
477 | s->iovecs[i].iov_len = BS; | |
c9fb4c5b JA |
478 | } |
479 | ||
c3e2fc25 | 480 | err = setup_ring(s); |
c9fb4c5b | 481 | if (err) { |
c3e2fc25 | 482 | printf("ring setup failed: %s, %d\n", strerror(errno), err); |
c9fb4c5b JA |
483 | return 1; |
484 | } | |
c3e2fc25 JA |
485 | printf("polled=%d, fixedbufs=%d, buffered=%d", polled, fixedbufs, buffered); |
486 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", DEPTH, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
c9fb4c5b JA |
487 | |
488 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
489 | ||
305c06ce | 490 | cache_hit = cache_miss = reap = calls = done = 0; |
c9fb4c5b JA |
491 | do { |
492 | unsigned long this_done = 0; | |
493 | unsigned long this_reap = 0; | |
494 | unsigned long this_call = 0; | |
305c06ce JA |
495 | unsigned long this_cache_hit = 0; |
496 | unsigned long this_cache_miss = 0; | |
c9fb4c5b | 497 | unsigned long rpc = 0, ipc = 0; |
305c06ce | 498 | double hit = 0.0; |
c9fb4c5b JA |
499 | |
500 | sleep(1); | |
501 | this_done += s->done; | |
502 | this_call += s->calls; | |
503 | this_reap += s->reaps; | |
305c06ce JA |
504 | this_cache_hit += s->cachehit; |
505 | this_cache_miss += s->cachemiss; | |
506 | if (this_cache_hit && this_cache_miss) { | |
507 | unsigned long hits, total; | |
508 | ||
509 | hits = this_cache_hit - cache_hit; | |
510 | total = hits + this_cache_miss - cache_miss; | |
511 | hit = (double) hits / (double) total; | |
512 | hit *= 100.0; | |
513 | } | |
c9fb4c5b JA |
514 | if (this_call - calls) { |
515 | rpc = (this_done - done) / (this_call - calls); | |
516 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
517 | } else |
518 | rpc = ipc = -1; | |
519 | printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=%u (head=%u tail=%u), Cachehit=%0.2f%%\n", | |
c9fb4c5b | 520 | this_done - done, rpc, ipc, s->inflight, |
c3e2fc25 | 521 | *s->cq_ring.head, *s->cq_ring.tail, hit); |
c9fb4c5b JA |
522 | done = this_done; |
523 | calls = this_call; | |
524 | reap = this_reap; | |
305c06ce JA |
525 | cache_hit = s->cachehit; |
526 | cache_miss = s->cachemiss; | |
c9fb4c5b JA |
527 | } while (!finish); |
528 | ||
529 | pthread_join(s->thread, &ret); | |
e31b8288 | 530 | close(s->ring_fd); |
c9fb4c5b JA |
531 | return 0; |
532 | } |