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
|
#include "test/jemalloc_test.h"
#include "test/extent_hooks.h"
static bool
check_background_thread_enabled(void) {
bool enabled;
size_t sz = sizeof(bool);
int ret = mallctl("background_thread", (void *)&enabled, &sz, NULL,0);
if (ret == ENOENT) {
return false;
}
assert_d_eq(ret, 0, "Unexpected mallctl error");
return enabled;
}
static void
test_extent_body(unsigned arena_ind) {
void *p;
size_t large0, large1, large2, sz;
size_t purge_mib[3];
size_t purge_miblen;
int flags;
bool xallocx_success_a, xallocx_success_b, xallocx_success_c;
flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
/* Get large size classes. */
sz = sizeof(size_t);
assert_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
0), 0, "Unexpected arenas.lextent.0.size failure");
assert_d_eq(mallctl("arenas.lextent.1.size", (void *)&large1, &sz, NULL,
0), 0, "Unexpected arenas.lextent.1.size failure");
assert_d_eq(mallctl("arenas.lextent.2.size", (void *)&large2, &sz, NULL,
0), 0, "Unexpected arenas.lextent.2.size failure");
/* Test dalloc/decommit/purge cascade. */
purge_miblen = sizeof(purge_mib)/sizeof(size_t);
assert_d_eq(mallctlnametomib("arena.0.purge", purge_mib, &purge_miblen),
0, "Unexpected mallctlnametomib() failure");
purge_mib[1] = (size_t)arena_ind;
called_alloc = false;
try_alloc = true;
try_dalloc = false;
try_decommit = false;
p = mallocx(large0 * 2, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
assert_true(called_alloc, "Expected alloc call");
called_dalloc = false;
called_decommit = false;
did_purge_lazy = false;
did_purge_forced = false;
called_split = false;
xallocx_success_a = (xallocx(p, large0, 0, flags) == large0);
assert_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
if (xallocx_success_a) {
assert_true(called_dalloc, "Expected dalloc call");
assert_true(called_decommit, "Expected decommit call");
assert_true(did_purge_lazy || did_purge_forced,
"Expected purge");
}
assert_true(called_split, "Expected split call");
dallocx(p, flags);
try_dalloc = true;
/* Test decommit/commit and observe split/merge. */
try_dalloc = false;
try_decommit = true;
p = mallocx(large0 * 2, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
did_decommit = false;
did_commit = false;
called_split = false;
did_split = false;
did_merge = false;
xallocx_success_b = (xallocx(p, large0, 0, flags) == large0);
assert_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
if (xallocx_success_b) {
assert_true(did_split, "Expected split");
}
xallocx_success_c = (xallocx(p, large0 * 2, 0, flags) == large0 * 2);
if (did_split) {
assert_b_eq(did_decommit, did_commit,
"Expected decommit/commit match");
}
if (xallocx_success_b && xallocx_success_c) {
assert_true(did_merge, "Expected merge");
}
dallocx(p, flags);
try_dalloc = true;
try_decommit = false;
/* Make sure non-large allocation succeeds. */
p = mallocx(42, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
dallocx(p, flags);
}
static void
test_manual_hook_auto_arena(void) {
unsigned narenas;
size_t old_size, new_size, sz;
size_t hooks_mib[3];
size_t hooks_miblen;
extent_hooks_t *new_hooks, *old_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
/* Get number of auto arenas. */
assert_d_eq(mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0),
0, "Unexpected mallctl() failure");
if (narenas == 1) {
return;
}
/* Install custom extent hooks on arena 1 (might not be initialized). */
hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
assert_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
&hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
hooks_mib[1] = 1;
old_size = sizeof(extent_hooks_t *);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, (void *)&new_hooks, new_size), 0,
"Unexpected extent_hooks error");
static bool auto_arena_created = false;
if (old_hooks != &hooks) {
assert_b_eq(auto_arena_created, false,
"Expected auto arena 1 created only once.");
auto_arena_created = true;
}
}
static void
test_manual_hook_body(void) {
unsigned arena_ind;
size_t old_size, new_size, sz;
size_t hooks_mib[3];
size_t hooks_miblen;
extent_hooks_t *new_hooks, *old_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
assert_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
0, "Unexpected mallctl() failure");
/* Install custom extent hooks. */
hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
assert_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
&hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
hooks_mib[1] = (size_t)arena_ind;
old_size = sizeof(extent_hooks_t *);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, (void *)&new_hooks, new_size), 0,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->alloc, extent_alloc_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->dalloc, extent_dalloc_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->commit, extent_commit_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->decommit, extent_decommit_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->purge_lazy, extent_purge_lazy_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->purge_forced, extent_purge_forced_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->split, extent_split_hook,
"Unexpected extent_hooks error");
assert_ptr_ne(old_hooks->merge, extent_merge_hook,
"Unexpected extent_hooks error");
if (!check_background_thread_enabled()) {
test_extent_body(arena_ind);
}
/* Restore extent hooks. */
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, NULL, NULL,
(void *)&old_hooks, new_size), 0, "Unexpected extent_hooks error");
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, NULL, 0), 0, "Unexpected extent_hooks error");
assert_ptr_eq(old_hooks, default_hooks, "Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->alloc, default_hooks->alloc,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->dalloc, default_hooks->dalloc,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->commit, default_hooks->commit,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->decommit, default_hooks->decommit,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->purge_lazy, default_hooks->purge_lazy,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->purge_forced, default_hooks->purge_forced,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->split, default_hooks->split,
"Unexpected extent_hooks error");
assert_ptr_eq(old_hooks->merge, default_hooks->merge,
"Unexpected extent_hooks error");
}
TEST_BEGIN(test_extent_manual_hook) {
test_manual_hook_auto_arena();
test_manual_hook_body();
/* Test failure paths. */
try_split = false;
test_manual_hook_body();
try_merge = false;
test_manual_hook_body();
try_purge_lazy = false;
try_purge_forced = false;
test_manual_hook_body();
try_split = try_merge = try_purge_lazy = try_purge_forced = true;
}
TEST_END
TEST_BEGIN(test_extent_auto_hook) {
unsigned arena_ind;
size_t new_size, sz;
extent_hooks_t *new_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
assert_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
(void *)&new_hooks, new_size), 0, "Unexpected mallctl() failure");
test_skip_if(check_background_thread_enabled());
test_extent_body(arena_ind);
}
TEST_END
int
main(void) {
return test(
test_extent_manual_hook,
test_extent_auto_hook);
}
|
