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Refactor *decay_time into *decay_ms.

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Support millisecond resolution for decay times.  Among other use cases
this makes it possible to specify a short initial dirty-->muzzy decay
phase, followed by a longer muzzy-->clean decay phase.

This resolves #812.
This commit is contained in:
Jason Evans
2017-05-17 10:47:00 -07:00
parent baf3e294e0
commit 6e62c62862
16 changed files with 320 additions and 328 deletions
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24
test/unit/decay.c
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@@ -24,7 +24,7 @@ nstime_update_mock(nstime_t *time) {
}
static unsigned
do_arena_create(ssize_t dirty_decay_time, ssize_t muzzy_decay_time) {
do_arena_create(ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms) {
unsigned arena_ind;
size_t sz = sizeof(unsigned);
assert_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
@@ -32,19 +32,19 @@ do_arena_create(ssize_t dirty_decay_time, ssize_t muzzy_decay_time) {
size_t mib[3];
size_t miblen = sizeof(mib)/sizeof(size_t);
assert_d_eq(mallctlnametomib("arena.0.dirty_decay_time", mib, &miblen),
assert_d_eq(mallctlnametomib("arena.0.dirty_decay_ms", mib, &miblen),
0, "Unexpected mallctlnametomib() failure");
mib[1] = (size_t)arena_ind;
assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL,
(void *)&dirty_decay_time,
sizeof(dirty_decay_time)), 0, "Unexpected mallctlbymib() failure");
(void *)&dirty_decay_ms, sizeof(dirty_decay_ms)), 0,
"Unexpected mallctlbymib() failure");
assert_d_eq(mallctlnametomib("arena.0.muzzy_decay_time", mib, &miblen),
assert_d_eq(mallctlnametomib("arena.0.muzzy_decay_ms", mib, &miblen),
0, "Unexpected mallctlnametomib() failure");
mib[1] = (size_t)arena_ind;
assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL,
(void *)&muzzy_decay_time,
sizeof(muzzy_decay_time)), 0, "Unexpected mallctlbymib() failure");
(void *)&muzzy_decay_ms, sizeof(muzzy_decay_ms)), 0,
"Unexpected mallctlbymib() failure");
return arena_ind;
}
@@ -362,14 +362,14 @@ static void
decay_ticker_helper(unsigned arena_ind, int flags, bool dirty, ssize_t dt,
uint64_t dirty_npurge0, uint64_t muzzy_npurge0, bool terminate_asap) {
#define NINTERVALS 101
nstime_t time, update_interval, decay_time, deadline;
nstime_t time, update_interval, decay_ms, deadline;
nstime_init(&time, 0);
nstime_update(&time);
nstime_init2(&decay_time, dt, 0);
nstime_init2(&decay_ms, dt, 0);
nstime_copy(&deadline, &time);
nstime_add(&deadline, &decay_time);
nstime_add(&deadline, &decay_ms);
nstime_init2(&update_interval, dt, 0);
nstime_idivide(&update_interval, NINTERVALS);
@@ -406,8 +406,8 @@ decay_ticker_helper(unsigned arena_ind, int flags, bool dirty, ssize_t dt,
TEST_BEGIN(test_decay_ticker) {
#define NPS 2048
ssize_t ddt = opt_dirty_decay_time;
ssize_t mdt = opt_muzzy_decay_time;
ssize_t ddt = opt_dirty_decay_ms;
ssize_t mdt = opt_muzzy_decay_ms;
unsigned arena_ind = do_arena_create(ddt, mdt);
int flags = (MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE);
void *ps[NPS];