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#include "test/jemalloc_test.h"
const char *malloc_conf = "purge:decay,decay_time:1";
static time_update_t *time_update_orig;
static unsigned nupdates_mock;
static struct timespec time_mock;
static bool nonmonotonic_mock;
static bool
time_update_mock(struct timespec *time)
{
nupdates_mock++;
if (!nonmonotonic_mock)
time_copy(time, &time_mock);
return (nonmonotonic_mock);
}
TEST_BEGIN(test_decay_ticks)
{
ticker_t *decay_ticker;
unsigned tick0, tick1;
size_t sz, huge0, large0;
void *p;
unsigned tcache_ind;
test_skip_if(opt_purge != purge_mode_decay);
decay_ticker = decay_ticker_get(tsd_fetch(), 0);
assert_ptr_not_null(decay_ticker,
"Unexpected failure getting decay ticker");
sz = sizeof(size_t);
assert_d_eq(mallctl("arenas.hchunk.0.size", &huge0, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
assert_d_eq(mallctl("arenas.lrun.0.size", &large0, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
/* malloc(). */
tick0 = ticker_read(decay_ticker);
p = malloc(huge0);
assert_ptr_not_null(p, "Unexpected malloc() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during malloc()");
/* free(). */
tick0 = ticker_read(decay_ticker);
free(p);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during free()");
/* calloc(). */
tick0 = ticker_read(decay_ticker);
p = calloc(1, huge0);
assert_ptr_not_null(p, "Unexpected calloc() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during calloc()");
free(p);
/* posix_memalign(). */
tick0 = ticker_read(decay_ticker);
assert_d_eq(posix_memalign(&p, sizeof(size_t), huge0), 0,
"Unexpected posix_memalign() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during posix_memalign()");
free(p);
/* aligned_alloc(). */
tick0 = ticker_read(decay_ticker);
p = aligned_alloc(sizeof(size_t), huge0);
assert_ptr_not_null(p, "Unexpected aligned_alloc() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during aligned_alloc()");
free(p);
/* realloc(). */
/* Allocate. */
tick0 = ticker_read(decay_ticker);
p = realloc(NULL, huge0);
assert_ptr_not_null(p, "Unexpected realloc() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
/* Reallocate. */
tick0 = ticker_read(decay_ticker);
p = realloc(p, huge0);
assert_ptr_not_null(p, "Unexpected realloc() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
/* Deallocate. */
tick0 = ticker_read(decay_ticker);
realloc(p, 0);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
/* Huge mallocx(). */
tick0 = ticker_read(decay_ticker);
p = mallocx(huge0, 0);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during huge mallocx()");
/* Huge rallocx(). */
tick0 = ticker_read(decay_ticker);
p = rallocx(p, huge0, 0);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during huge rallocx()");
/* Huge xallocx(). */
tick0 = ticker_read(decay_ticker);
xallocx(p, huge0, 0, 0);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during huge xallocx()");
/* Huge dallocx(). */
tick0 = ticker_read(decay_ticker);
dallocx(p, 0);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during huge dallocx()");
/* Huge sdallocx(). */
p = mallocx(huge0, 0);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick0 = ticker_read(decay_ticker);
sdallocx(p, huge0, 0);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during huge sdallocx()");
/* Large mallocx(). */
tick0 = ticker_read(decay_ticker);
p = mallocx(large0, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during large mallocx()");
/* Large rallocx(). */
tick0 = ticker_read(decay_ticker);
p = rallocx(p, large0, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during large rallocx()");
/* Large xallocx(). */
tick0 = ticker_read(decay_ticker);
xallocx(p, large0, 0, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during large xallocx()");
/* Large dallocx(). */
tick0 = ticker_read(decay_ticker);
dallocx(p, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during large dallocx()");
/* Large sdallocx(). */
p = mallocx(large0, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick0 = ticker_read(decay_ticker);
sdallocx(p, large0, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during large sdallocx()");
/* Small mallocx(). */
tick0 = ticker_read(decay_ticker);
p = mallocx(1, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during small mallocx()");
/* Small rallocx(). */
tick0 = ticker_read(decay_ticker);
p = rallocx(p, 1, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during small rallocx()");
/* Small xallocx(). */
tick0 = ticker_read(decay_ticker);
xallocx(p, 1, 0, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during small xallocx()");
/* Small dallocx(). */
tick0 = ticker_read(decay_ticker);
dallocx(p, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during small dallocx()");
/* Small sdallocx(). */
p = mallocx(1, MALLOCX_TCACHE_NONE);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick0 = ticker_read(decay_ticker);
sdallocx(p, 1, MALLOCX_TCACHE_NONE);
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during small sdallocx()");
/* tcache fill. */
sz = sizeof(unsigned);
assert_d_eq(mallctl("tcache.create", &tcache_ind, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
tick0 = ticker_read(decay_ticker);
p = mallocx(1, MALLOCX_TCACHE(tcache_ind));
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during tcache fill");
/* tcache flush. */
dallocx(p, MALLOCX_TCACHE(tcache_ind));
tick0 = ticker_read(decay_ticker);
assert_d_eq(mallctl("tcache.flush", NULL, NULL, &tcache_ind,
sizeof(unsigned)), 0, "Unexpected mallctl failure");
tick1 = ticker_read(decay_ticker);
assert_u32_ne(tick1, tick0,
"Expected ticker to tick during tcache flush");
}
TEST_END
TEST_BEGIN(test_decay_ticker)
{
#define NPS 1024
int flags = (MALLOCX_ARENA(0) | MALLOCX_TCACHE_NONE);
void *ps[NPS];
uint64_t epoch, npurge0, npurge1;
size_t sz, tcache_max, large;
unsigned i, nupdates0;
struct timespec time, decay_time, deadline;
test_skip_if(opt_purge != purge_mode_decay);
/*
* Allocate a bunch of large objects, pause the clock, deallocate the
* objects, restore the clock, then [md]allocx() in a tight loop to
* verify the ticker triggers purging.
*/
sz = sizeof(size_t);
assert_d_eq(mallctl("arenas.tcache_max", &tcache_max, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
large = nallocx(tcache_max + 1, flags);
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected mallctl failure");
assert_d_eq(mallctl("epoch", NULL, NULL, &epoch, sizeof(uint64_t)), 0,
"Unexpected mallctl failure");
sz = sizeof(uint64_t);
assert_d_eq(mallctl("stats.arenas.0.npurge", &npurge0, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
for (i = 0; i < NPS; i++) {
ps[i] = mallocx(large, flags);
assert_ptr_not_null(ps[i], "Unexpected mallocx() failure");
}
nupdates_mock = 0;
time_init(&time_mock, 0, 0);
time_update(&time_mock);
nonmonotonic_mock = false;
time_update_orig = time_update;
time_update = time_update_mock;
for (i = 0; i < NPS; i++) {
dallocx(ps[i], flags);
nupdates0 = nupdates_mock;
assert_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.decay failure");
assert_u_gt(nupdates_mock, nupdates0,
"Expected time_update() to be called");
}
time_update = time_update_orig;
time_init(&time, 0, 0);
time_update(&time);
time_init(&decay_time, opt_decay_time, 0);
time_copy(&deadline, &time);
time_add(&deadline, &decay_time);
do {
for (i = 0; i < DECAY_NTICKS_PER_UPDATE / 2; i++) {
void *p = mallocx(1, flags);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
dallocx(p, flags);
}
assert_d_eq(mallctl("epoch", NULL, NULL, &epoch,
sizeof(uint64_t)), 0, "Unexpected mallctl failure");
sz = sizeof(uint64_t);
assert_d_eq(mallctl("stats.arenas.0.npurge", &npurge1, &sz,
NULL, 0), 0, "Unexpected mallctl failure");
time_update(&time);
} while (time_compare(&time, &deadline) <= 0 && npurge1 == npurge0);
assert_u64_gt(npurge1, npurge0, "Expected purging to occur");
#undef NPS
}
TEST_END
TEST_BEGIN(test_decay_nonmonotonic)
{
#define NPS (SMOOTHSTEP_NSTEPS + 1)
int flags = (MALLOCX_ARENA(0) | MALLOCX_TCACHE_NONE);
void *ps[NPS];
uint64_t epoch, npurge0, npurge1;
size_t sz, large0;
unsigned i, nupdates0;
test_skip_if(opt_purge != purge_mode_decay);
sz = sizeof(size_t);
assert_d_eq(mallctl("arenas.lrun.0.size", &large0, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected mallctl failure");
assert_d_eq(mallctl("epoch", NULL, NULL, &epoch, sizeof(uint64_t)), 0,
"Unexpected mallctl failure");
sz = sizeof(uint64_t);
assert_d_eq(mallctl("stats.arenas.0.npurge", &npurge0, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
nupdates_mock = 0;
time_init(&time_mock, 0, 0);
time_update(&time_mock);
nonmonotonic_mock = true;
time_update_orig = time_update;
time_update = time_update_mock;
for (i = 0; i < NPS; i++) {
ps[i] = mallocx(large0, flags);
assert_ptr_not_null(ps[i], "Unexpected mallocx() failure");
}
for (i = 0; i < NPS; i++) {
dallocx(ps[i], flags);
nupdates0 = nupdates_mock;
assert_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0,
"Unexpected arena.0.decay failure");
assert_u_gt(nupdates_mock, nupdates0,
"Expected time_update() to be called");
}
assert_d_eq(mallctl("epoch", NULL, NULL, &epoch, sizeof(uint64_t)), 0,
"Unexpected mallctl failure");
sz = sizeof(uint64_t);
assert_d_eq(mallctl("stats.arenas.0.npurge", &npurge1, &sz, NULL, 0), 0,
"Unexpected mallctl failure");
assert_u64_gt(npurge1, npurge0, "Expected purging to occur");
time_update = time_update_orig;
#undef NPS
}
TEST_END
int
main(void)
{
return (test(
test_decay_ticks,
test_decay_ticker,
test_decay_nonmonotonic));
}
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