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Allow setting extent hooks on uninitialized auto arenas.

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Setting extent hooks can result in initializing an unused auto arena.  This is
useful to install extent hooks on auto arenas from the beginning.
This commit is contained in:
Qi Wang 2018-04-11 15:15:26 -07:00 • committed by Qi Wang
parent 02585420c3
commit 3f0dc64c6b
2 changed files with 71 additions and 12 deletions
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38
test/integration/extent.c
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@ -98,6 +98,43 @@ test_extent_body(unsigned arena_ind) {
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;
@ -169,6 +206,7 @@ test_manual_hook_body(void) {
}
TEST_BEGIN(test_extent_manual_hook) {
test_manual_hook_auto_arena();
test_manual_hook_body();
/* Test failure paths. */