1 /* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 // vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
3 #ident "$Id$"
4 /*======
5 This file is part of PerconaFT.
6
7
8 Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
9
10 PerconaFT is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License, version 2,
12 as published by the Free Software Foundation.
13
14 PerconaFT is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
21
22 ----------------------------------------
23
24 PerconaFT is free software: you can redistribute it and/or modify
25 it under the terms of the GNU Affero General Public License, version 3,
26 as published by the Free Software Foundation.
27
28 PerconaFT is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 GNU Affero General Public License for more details.
32
33 You should have received a copy of the GNU Affero General Public License
34 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
35 ======= */
36
37 #ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
38
39 /* verify that get_and_pin waits while a prefetch block is pending */
40
41 #include "test.h"
42
43 bool do_sleep;
44
45 static void
flush(CACHEFILE f,int UU (fd),CACHEKEY k,void * v,void ** UU (dd),void * e,PAIR_ATTR s,PAIR_ATTR * new_size,bool w,bool keep,bool c,bool UU (is_clone))46 flush (CACHEFILE f __attribute__((__unused__)),
47 int UU(fd),
48 CACHEKEY k __attribute__((__unused__)),
49 void *v __attribute__((__unused__)),
50 void** UU(dd),
51 void *e __attribute__((__unused__)),
52 PAIR_ATTR s __attribute__((__unused__)),
53 PAIR_ATTR* new_size __attribute__((__unused__)),
54 bool w __attribute__((__unused__)),
55 bool keep __attribute__((__unused__)),
56 bool c __attribute__((__unused__)),
57 bool UU(is_clone)
58 ) {
59 if (do_sleep) {
60 sleep(3);
61 }
62 }
63
tdelta_usec(struct timeval * tend,struct timeval * tstart)64 static uint64_t tdelta_usec(struct timeval *tend, struct timeval *tstart) {
65 uint64_t t = tend->tv_sec * 1000000 + tend->tv_usec;
66 t -= tstart->tv_sec * 1000000 + tstart->tv_usec;
67 return t;
68 }
69
cachetable_predef_fetch_maybegetandpin_test(void)70 static void cachetable_predef_fetch_maybegetandpin_test (void) {
71 const int test_limit = 12;
72 int r;
73 CACHETABLE ct;
74 toku_cachetable_create(&ct, test_limit, ZERO_LSN, nullptr);
75 evictor_test_helpers::disable_ev_thread(&ct->ev);
76 const char *fname1 = TOKU_TEST_FILENAME;
77 unlink(fname1);
78 CACHEFILE f1;
79 r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO); assert(r == 0);
80 CACHEKEY key = make_blocknum(0);
81 uint32_t fullhash = toku_cachetable_hash(f1, make_blocknum(0));
82
83 // let's get and pin this node a bunch of times to drive up the clock count
84 for (int i = 0; i < 20; i++) {
85 void* value;
86 CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
87 wc.flush_callback = flush;
88 r = toku_cachetable_get_and_pin(
89 f1,
90 key,
91 fullhash,
92 &value,
93 wc,
94 def_fetch,
95 def_pf_req_callback,
96 def_pf_callback,
97 true,
98 0
99 );
100 assert(r==0);
101 r = toku_test_cachetable_unpin(f1, key, fullhash, CACHETABLE_DIRTY, make_pair_attr(8));
102 }
103
104 struct timeval tstart;
105 gettimeofday(&tstart, NULL);
106
107 // def_fetch another block, causing an eviction of the first block we made above
108 do_sleep = true;
109 void* value2;
110 CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
111 r = toku_cachetable_get_and_pin(
112 f1,
113 make_blocknum(1),
114 1,
115 &value2,
116 wc,
117 def_fetch,
118 def_pf_req_callback,
119 def_pf_callback,
120 true,
121 0
122 );
123 assert(r==0);
124 ct->ev.signal_eviction_thread();
125 usleep(1*1024*1024);
126 r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8));
127 toku_cachetable_verify(ct);
128
129 void *v = 0;
130 // now verify that the block we are trying to evict is gone
131 wc = def_write_callback(NULL);
132 wc.flush_callback = flush;
133 r = toku_cachetable_get_and_pin_nonblocking(f1, key, fullhash, &v, wc, def_fetch, def_pf_req_callback, def_pf_callback, PL_WRITE_EXPENSIVE, NULL, NULL);
134 assert(r == TOKUDB_TRY_AGAIN);
135 r = toku_cachetable_get_and_pin(f1, key, fullhash, &v, wc, def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
136 assert(r == 0 && v == 0);
137 PAIR_ATTR attr;
138 r = toku_cachetable_get_attr(f1, key, fullhash, &attr);
139 assert(r == 0 && attr.size == 8);
140 do_sleep = false;
141
142 struct timeval tend;
143 gettimeofday(&tend, NULL);
144
145 assert(tdelta_usec(&tend, &tstart) >= 2000000);
146 if (verbose)printf("time %" PRIu64 " \n", tdelta_usec(&tend, &tstart));
147 toku_cachetable_verify(ct);
148
149 r = toku_test_cachetable_unpin(f1, key, fullhash, CACHETABLE_CLEAN, make_pair_attr(1));
150 assert(r == 0);
151 toku_cachetable_verify(ct);
152
153 toku_cachefile_close(&f1, false, ZERO_LSN);
154 toku_cachetable_close(&ct);
155 }
156
157 int
test_main(int argc,const char * argv[])158 test_main(int argc, const char *argv[]) {
159 default_parse_args(argc, argv);
160 cachetable_predef_fetch_maybegetandpin_test();
161 return 0;
162 }
163