1 #include "test/jemalloc_test.h"
2
3 #ifdef JEMALLOC_FILL
4 const char *malloc_conf = "junk:false";
5 #endif
6
7 static chunk_hooks_t orig_hooks;
8 static chunk_hooks_t old_hooks;
9
10 static bool do_dalloc = true;
11 static bool do_decommit;
12
13 static bool did_alloc;
14 static bool did_dalloc;
15 static bool did_commit;
16 static bool did_decommit;
17 static bool did_purge;
18 static bool did_split;
19 static bool did_merge;
20
21 #if 0
22 # define TRACE_HOOK(fmt, ...) malloc_printf(fmt, __VA_ARGS__)
23 #else
24 # define TRACE_HOOK(fmt, ...)
25 #endif
26
27 void *
chunk_alloc(void * new_addr,size_t size,size_t alignment,bool * zero,bool * commit,unsigned arena_ind)28 chunk_alloc(void *new_addr, size_t size, size_t alignment, bool *zero,
29 bool *commit, unsigned arena_ind)
30 {
31
32 TRACE_HOOK("%s(new_addr=%p, size=%zu, alignment=%zu, *zero=%s, "
33 "*commit=%s, arena_ind=%u)\n", __func__, new_addr, size, alignment,
34 *zero ? "true" : "false", *commit ? "true" : "false", arena_ind);
35 did_alloc = true;
36 return (old_hooks.alloc(new_addr, size, alignment, zero, commit,
37 arena_ind));
38 }
39
40 bool
chunk_dalloc(void * chunk,size_t size,bool committed,unsigned arena_ind)41 chunk_dalloc(void *chunk, size_t size, bool committed, unsigned arena_ind)
42 {
43
44 TRACE_HOOK("%s(chunk=%p, size=%zu, committed=%s, arena_ind=%u)\n",
45 __func__, chunk, size, committed ? "true" : "false", arena_ind);
46 did_dalloc = true;
47 if (!do_dalloc)
48 return (true);
49 return (old_hooks.dalloc(chunk, size, committed, arena_ind));
50 }
51
52 bool
chunk_commit(void * chunk,size_t size,size_t offset,size_t length,unsigned arena_ind)53 chunk_commit(void *chunk, size_t size, size_t offset, size_t length,
54 unsigned arena_ind)
55 {
56 bool err;
57
58 TRACE_HOOK("%s(chunk=%p, size=%zu, offset=%zu, length=%zu, "
59 "arena_ind=%u)\n", __func__, chunk, size, offset, length,
60 arena_ind);
61 err = old_hooks.commit(chunk, size, offset, length, arena_ind);
62 did_commit = !err;
63 return (err);
64 }
65
66 bool
chunk_decommit(void * chunk,size_t size,size_t offset,size_t length,unsigned arena_ind)67 chunk_decommit(void *chunk, size_t size, size_t offset, size_t length,
68 unsigned arena_ind)
69 {
70 bool err;
71
72 TRACE_HOOK("%s(chunk=%p, size=%zu, offset=%zu, length=%zu, "
73 "arena_ind=%u)\n", __func__, chunk, size, offset, length,
74 arena_ind);
75 if (!do_decommit)
76 return (true);
77 err = old_hooks.decommit(chunk, size, offset, length, arena_ind);
78 did_decommit = !err;
79 return (err);
80 }
81
82 bool
chunk_purge(void * chunk,size_t size,size_t offset,size_t length,unsigned arena_ind)83 chunk_purge(void *chunk, size_t size, size_t offset, size_t length,
84 unsigned arena_ind)
85 {
86
87 TRACE_HOOK("%s(chunk=%p, size=%zu, offset=%zu, length=%zu "
88 "arena_ind=%u)\n", __func__, chunk, size, offset, length,
89 arena_ind);
90 did_purge = true;
91 return (old_hooks.purge(chunk, size, offset, length, arena_ind));
92 }
93
94 bool
chunk_split(void * chunk,size_t size,size_t size_a,size_t size_b,bool committed,unsigned arena_ind)95 chunk_split(void *chunk, size_t size, size_t size_a, size_t size_b,
96 bool committed, unsigned arena_ind)
97 {
98
99 TRACE_HOOK("%s(chunk=%p, size=%zu, size_a=%zu, size_b=%zu, "
100 "committed=%s, arena_ind=%u)\n", __func__, chunk, size, size_a,
101 size_b, committed ? "true" : "false", arena_ind);
102 did_split = true;
103 return (old_hooks.split(chunk, size, size_a, size_b, committed,
104 arena_ind));
105 }
106
107 bool
chunk_merge(void * chunk_a,size_t size_a,void * chunk_b,size_t size_b,bool committed,unsigned arena_ind)108 chunk_merge(void *chunk_a, size_t size_a, void *chunk_b, size_t size_b,
109 bool committed, unsigned arena_ind)
110 {
111
112 TRACE_HOOK("%s(chunk_a=%p, size_a=%zu, chunk_b=%p size_b=%zu, "
113 "committed=%s, arena_ind=%u)\n", __func__, chunk_a, size_a, chunk_b,
114 size_b, committed ? "true" : "false", arena_ind);
115 did_merge = true;
116 return (old_hooks.merge(chunk_a, size_a, chunk_b, size_b,
117 committed, arena_ind));
118 }
119
TEST_BEGIN(test_chunk)120 TEST_BEGIN(test_chunk)
121 {
122 void *p;
123 size_t old_size, new_size, large0, large1, huge0, huge1, huge2, sz;
124 chunk_hooks_t new_hooks = {
125 chunk_alloc,
126 chunk_dalloc,
127 chunk_commit,
128 chunk_decommit,
129 chunk_purge,
130 chunk_split,
131 chunk_merge
132 };
133 bool xallocx_success_a, xallocx_success_b, xallocx_success_c;
134
135 /* Install custom chunk hooks. */
136 old_size = sizeof(chunk_hooks_t);
137 new_size = sizeof(chunk_hooks_t);
138 assert_d_eq(mallctl("arena.0.chunk_hooks", &old_hooks, &old_size,
139 &new_hooks, new_size), 0, "Unexpected chunk_hooks error");
140 orig_hooks = old_hooks;
141 assert_ptr_ne(old_hooks.alloc, chunk_alloc, "Unexpected alloc error");
142 assert_ptr_ne(old_hooks.dalloc, chunk_dalloc,
143 "Unexpected dalloc error");
144 assert_ptr_ne(old_hooks.commit, chunk_commit,
145 "Unexpected commit error");
146 assert_ptr_ne(old_hooks.decommit, chunk_decommit,
147 "Unexpected decommit error");
148 assert_ptr_ne(old_hooks.purge, chunk_purge, "Unexpected purge error");
149 assert_ptr_ne(old_hooks.split, chunk_split, "Unexpected split error");
150 assert_ptr_ne(old_hooks.merge, chunk_merge, "Unexpected merge error");
151
152 /* Get large size classes. */
153 sz = sizeof(size_t);
154 assert_d_eq(mallctl("arenas.lrun.0.size", &large0, &sz, NULL, 0), 0,
155 "Unexpected arenas.lrun.0.size failure");
156 assert_d_eq(mallctl("arenas.lrun.1.size", &large1, &sz, NULL, 0), 0,
157 "Unexpected arenas.lrun.1.size failure");
158
159 /* Get huge size classes. */
160 assert_d_eq(mallctl("arenas.hchunk.0.size", &huge0, &sz, NULL, 0), 0,
161 "Unexpected arenas.hchunk.0.size failure");
162 assert_d_eq(mallctl("arenas.hchunk.1.size", &huge1, &sz, NULL, 0), 0,
163 "Unexpected arenas.hchunk.1.size failure");
164 assert_d_eq(mallctl("arenas.hchunk.2.size", &huge2, &sz, NULL, 0), 0,
165 "Unexpected arenas.hchunk.2.size failure");
166
167 /* Test dalloc/decommit/purge cascade. */
168 do_dalloc = false;
169 do_decommit = false;
170 p = mallocx(huge0 * 2, 0);
171 assert_ptr_not_null(p, "Unexpected mallocx() error");
172 did_dalloc = false;
173 did_decommit = false;
174 did_purge = false;
175 did_split = false;
176 xallocx_success_a = (xallocx(p, huge0, 0, 0) == huge0);
177 assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
178 "Unexpected arena.0.purge error");
179 if (xallocx_success_a) {
180 assert_true(did_dalloc, "Expected dalloc");
181 assert_false(did_decommit, "Unexpected decommit");
182 assert_true(did_purge, "Expected purge");
183 }
184 assert_true(did_split, "Expected split");
185 dallocx(p, 0);
186 do_dalloc = true;
187
188 /* Test decommit/commit and observe split/merge. */
189 do_dalloc = false;
190 do_decommit = true;
191 p = mallocx(huge0 * 2, 0);
192 assert_ptr_not_null(p, "Unexpected mallocx() error");
193 did_decommit = false;
194 did_commit = false;
195 did_split = false;
196 did_merge = false;
197 xallocx_success_b = (xallocx(p, huge0, 0, 0) == huge0);
198 assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
199 "Unexpected arena.0.purge error");
200 if (xallocx_success_b)
201 assert_true(did_split, "Expected split");
202 xallocx_success_c = (xallocx(p, huge0 * 2, 0, 0) == huge0 * 2);
203 assert_b_eq(did_decommit, did_commit, "Expected decommit/commit match");
204 if (xallocx_success_b && xallocx_success_c)
205 assert_true(did_merge, "Expected merge");
206 dallocx(p, 0);
207 do_dalloc = true;
208 do_decommit = false;
209
210 /* Test purge for partial-chunk huge allocations. */
211 if (huge0 * 2 > huge2) {
212 /*
213 * There are at least four size classes per doubling, so a
214 * successful xallocx() from size=huge2 to size=huge1 is
215 * guaranteed to leave trailing purgeable memory.
216 */
217 p = mallocx(huge2, 0);
218 assert_ptr_not_null(p, "Unexpected mallocx() error");
219 did_purge = false;
220 assert_zu_eq(xallocx(p, huge1, 0, 0), huge1,
221 "Unexpected xallocx() failure");
222 assert_true(did_purge, "Expected purge");
223 dallocx(p, 0);
224 }
225
226 /* Test decommit for large allocations. */
227 do_decommit = true;
228 p = mallocx(large1, 0);
229 assert_ptr_not_null(p, "Unexpected mallocx() error");
230 assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
231 "Unexpected arena.0.purge error");
232 did_decommit = false;
233 assert_zu_eq(xallocx(p, large0, 0, 0), large0,
234 "Unexpected xallocx() failure");
235 assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
236 "Unexpected arena.0.purge error");
237 did_commit = false;
238 assert_zu_eq(xallocx(p, large1, 0, 0), large1,
239 "Unexpected xallocx() failure");
240 assert_b_eq(did_decommit, did_commit, "Expected decommit/commit match");
241 dallocx(p, 0);
242 do_decommit = false;
243
244 /* Make sure non-huge allocation succeeds. */
245 p = mallocx(42, 0);
246 assert_ptr_not_null(p, "Unexpected mallocx() error");
247 dallocx(p, 0);
248
249 /* Restore chunk hooks. */
250 assert_d_eq(mallctl("arena.0.chunk_hooks", NULL, NULL, &old_hooks,
251 new_size), 0, "Unexpected chunk_hooks error");
252 assert_d_eq(mallctl("arena.0.chunk_hooks", &old_hooks, &old_size,
253 NULL, 0), 0, "Unexpected chunk_hooks error");
254 assert_ptr_eq(old_hooks.alloc, orig_hooks.alloc,
255 "Unexpected alloc error");
256 assert_ptr_eq(old_hooks.dalloc, orig_hooks.dalloc,
257 "Unexpected dalloc error");
258 assert_ptr_eq(old_hooks.commit, orig_hooks.commit,
259 "Unexpected commit error");
260 assert_ptr_eq(old_hooks.decommit, orig_hooks.decommit,
261 "Unexpected decommit error");
262 assert_ptr_eq(old_hooks.purge, orig_hooks.purge,
263 "Unexpected purge error");
264 assert_ptr_eq(old_hooks.split, orig_hooks.split,
265 "Unexpected split error");
266 assert_ptr_eq(old_hooks.merge, orig_hooks.merge,
267 "Unexpected merge error");
268 }
269 TEST_END
270
271 int
main(void)272 main(void)
273 {
274
275 return (test(test_chunk));
276 }
277