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Use separate arena for chunk tests.

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This assures that side effects of internal allocation don't impact
tests.
This commit is contained in:
Jason Evans 2016-04-25 20:26:03 -07:00 committed by Jason Evans
parent c3b008ec39
commit de35328a10
1 changed files with 45 additions and 28 deletions
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73
test/integration/chunk.c
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@ -121,6 +121,10 @@ TEST_BEGIN(test_chunk)
{
void *p;
size_t old_size, new_size, large0, large1, huge0, huge1, huge2, sz;
unsigned arena_ind;
int flags;
size_t hooks_mib[3], purge_mib[3];
size_t hooks_miblen, purge_miblen;
chunk_hooks_t new_hooks = {
chunk_alloc,
chunk_dalloc,
@ -132,10 +136,19 @@ TEST_BEGIN(test_chunk)
};
bool xallocx_success_a, xallocx_success_b, xallocx_success_c;
sz = sizeof(unsigned);
assert_d_eq(mallctl("arenas.extend", &arena_ind, &sz, NULL, 0), 0,
"Unexpected mallctl() failure");
flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
/* Install custom chunk hooks. */
hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
assert_d_eq(mallctlnametomib("arena.0.chunk_hooks", hooks_mib,
&hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
hooks_mib[1] = (size_t)arena_ind;
old_size = sizeof(chunk_hooks_t);
new_size = sizeof(chunk_hooks_t);
assert_d_eq(mallctl("arena.0.chunk_hooks", &old_hooks, &old_size,
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, &old_hooks, &old_size,
&new_hooks, new_size), 0, "Unexpected chunk_hooks error");
orig_hooks = old_hooks;
assert_ptr_ne(old_hooks.alloc, chunk_alloc, "Unexpected alloc error");
@ -165,45 +178,49 @@ TEST_BEGIN(test_chunk)
"Unexpected arenas.hchunk.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;
do_dalloc = false;
do_decommit = false;
p = mallocx(huge0 * 2, 0);
p = mallocx(huge0 * 2, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
did_dalloc = false;
did_decommit = false;
did_purge = false;
did_split = false;
xallocx_success_a = (xallocx(p, huge0, 0, 0) == huge0);
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.purge error");
xallocx_success_a = (xallocx(p, huge0, 0, flags) == huge0);
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(did_dalloc, "Expected dalloc");
assert_false(did_decommit, "Unexpected decommit");
assert_true(did_purge, "Expected purge");
}
assert_true(did_split, "Expected split");
dallocx(p, 0);
dallocx(p, flags);
do_dalloc = true;
/* Test decommit/commit and observe split/merge. */
do_dalloc = false;
do_decommit = true;
p = mallocx(huge0 * 2, 0);
p = mallocx(huge0 * 2, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
did_decommit = false;
did_commit = false;
did_split = false;
did_merge = false;
xallocx_success_b = (xallocx(p, huge0, 0, 0) == huge0);
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.purge error");
xallocx_success_b = (xallocx(p, huge0, 0, flags) == huge0);
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, huge0 * 2, 0, 0) == huge0 * 2);
xallocx_success_c = (xallocx(p, huge0 * 2, 0, flags) == huge0 * 2);
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, 0);
dallocx(p, flags);
do_dalloc = true;
do_decommit = false;
@ -214,42 +231,42 @@ TEST_BEGIN(test_chunk)
* successful xallocx() from size=huge2 to size=huge1 is
* guaranteed to leave trailing purgeable memory.
*/
p = mallocx(huge2, 0);
p = mallocx(huge2, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
did_purge = false;
assert_zu_eq(xallocx(p, huge1, 0, 0), huge1,
assert_zu_eq(xallocx(p, huge1, 0, flags), huge1,
"Unexpected xallocx() failure");
assert_true(did_purge, "Expected purge");
dallocx(p, 0);
dallocx(p, flags);
}
/* Test decommit for large allocations. */
do_decommit = true;
p = mallocx(large1, 0);
p = mallocx(large1, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.purge error");
assert_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
did_decommit = false;
assert_zu_eq(xallocx(p, large0, 0, 0), large0,
assert_zu_eq(xallocx(p, large0, 0, flags), large0,
"Unexpected xallocx() failure");
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.purge error");
assert_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
did_commit = false;
assert_zu_eq(xallocx(p, large1, 0, 0), large1,
assert_zu_eq(xallocx(p, large1, 0, flags), large1,
"Unexpected xallocx() failure");
assert_b_eq(did_decommit, did_commit, "Expected decommit/commit match");
dallocx(p, 0);
dallocx(p, flags);
do_decommit = false;
/* Make sure non-huge allocation succeeds. */
p = mallocx(42, 0);
p = mallocx(42, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
dallocx(p, 0);
dallocx(p, flags);
/* Restore chunk hooks. */
assert_d_eq(mallctl("arena.0.chunk_hooks", NULL, NULL, &old_hooks,
new_size), 0, "Unexpected chunk_hooks error");
assert_d_eq(mallctl("arena.0.chunk_hooks", &old_hooks, &old_size,
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, NULL, NULL,
&old_hooks, new_size), 0, "Unexpected chunk_hooks error");
assert_d_eq(mallctlbymib(hooks_mib, hooks_miblen, &old_hooks, &old_size,
NULL, 0), 0, "Unexpected chunk_hooks error");
assert_ptr_eq(old_hooks.alloc, orig_hooks.alloc,
"Unexpected alloc error");