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--- libmalloc/libmalloc-657.80.3/tests/perf_realloc.c
+++ /dev/null
@@ -1,197 +0,0 @@
-#include <stdlib.h>
-#include <../src/internal.h>
-#include <darwintest.h>
-
-#if !MALLOC_TARGET_EXCLAVES
-#include <mach/vm_page_size.h>
-#include <perfcheck_keys.h>
-#else
-#include <time.h>
-#endif // !MALLOC_TARGET_EXCLAVES
-
-#pragma mark -
-#pragma mark Helper code
-
-#define PAGE_SPREAD 8
-#define MAX_NAME_SIZE 256
-#define OUTLIER_TIME 20000
-
-// This value is a guess that will be refined over time.
-#define PERFCHECK_THRESHOLD_PCT 10.0
-
-static char name[MAX_NAME_SIZE];
-#define NUMBER_OF_SAMPLES_FOR_BATCH(s) _dt_stat_batch_size((dt_stat_t)s)
-
-// Measures the time required to realloc a block of memory of given size
-// by a specified amount.
-static void
-realloc_by_amount(const char *base_metric_name, size_t size, ssize_t amount,
- bool amount_is_random)
-{
-#if !MALLOC_TARGET_EXCLAVES
- if (amount_is_random) {
- snprintf(name, MAX_NAME_SIZE, amount >= 0 ?
- "%s_from_%llu_up_random" : "%s_from_%llu_down_random",
- base_metric_name, (uint64_t)size);
- } else {
- snprintf(name, MAX_NAME_SIZE, amount >= 0 ?
- "%s_from_%llu_up_%ld" : "%s_from_%llu_down_%ld",
- base_metric_name, (uint64_t)size, labs(amount));
- }
-#endif // !MALLOC_TARGET_EXCLAVES
-
- uint64_t total_time = 0;
- int count = 0;
-
-#if !MALLOC_TARGET_EXCLAVES
- dt_stat_time_t s = dt_stat_time_create(name);
- dt_stat_set_variable((dt_stat_t)s, "size (bytes)", (unsigned int)size);
- dt_stat_set_variable((dt_stat_t)s, "amount (bytes)", (int)amount);
- dt_stat_token now = dt_stat_time_begin(s);
-#endif // !MALLOC_TARGET_EXCLAVES
-
- for (;;) {
- void *ptr = malloc(size);
- T_QUIET; T_ASSERT_NOTNULL(ptr, "malloc for size %llu failed", (uint64_t)size);
-
-#if MALLOC_TARGET_EXCLAVES
- struct timespec start, end;
- int rc_start = clock_gettime(CLOCK_MONOTONIC_RAW, &start);
- ptr = realloc(ptr, size + amount);
- int rc_end = clock_gettime(CLOCK_MONOTONIC_RAW, &end);
-
- const uint64_t _NSEC_PER_SEC = 1000000000ull;
- uint64_t start_nsec = start.tv_sec * _NSEC_PER_SEC + start.tv_nsec;
- uint64_t end_nsec = end.tv_sec * _NSEC_PER_SEC + end.tv_nsec;
- total_time += end_nsec - start_nsec;
-#else
- dt_stat_token start = dt_stat_time_begin(s);
- ptr = realloc(ptr, size + amount);
- dt_stat_token end = dt_stat_time_begin(s);
- total_time += end - start;
-#endif // MALLOC_TARGET_EXCLAVES
-
- T_QUIET; T_ASSERT_NOTNULL(ptr,
- "realloc from size %llu to size %llu failed", (uint64_t)size,
- (uint64_t)(size + amount));
- free(ptr);
-
-#if MALLOC_TARGET_EXCLAVES
- // On exclaves, run this test for the very arbitrary 10ms, or at
- // least 5 loops
- if (++count >= 5 && total_time >= (_NSEC_PER_SEC / 100)) {
- T_LOG("Ran realloc test for %d iterations, average time %llu",
- count, total_time / count);
- break;
- }
-#else
- if (++count >= NUMBER_OF_SAMPLES_FOR_BATCH(s)) {
- // Discard outliers or the test won't converge -- this should
- // be done in libdarwintest
- if (total_time/count < OUTLIER_TIME) {
- dt_stat_mach_time_add_batch(s, count, total_time);
- }
- total_time = 0;
- count = 0;
- if (dt_stat_stable(s)) {
- break;
- }
- }
-#endif // MALLOC_TARGET_EXCLAVES
- }
-
-#if !MALLOC_TARGET_EXCLAVES
- dt_stat_finalize(s);
-#endif // !MALLOC_TARGET_EXCLAVES
-}
-
-// Times a set of size adjustments from a given base.
-static void
-realloc_test_set(const char *base_name, size_t start_size)
-{
- ssize_t adj = 1;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -adj, false);
-
- adj = 8;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -adj, false);
-
- adj = 16;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -adj, false);
-
-#if INCLUDE_RANDOM_SIZE_TESTS
- adj = 1 + arc4random_uniform(vm_page_size - 1);
- realloc_by_amount(base_name, start_size, adj, true);
- realloc_by_amount(base_name, start_size + adj, -adj, true);
-
- uint32_t pages = 1 + arc4random_uniform(PAGE_SPREAD);
- adj = pages * vm_page_size;
- realloc_by_amount(base_name, start_size, adj, true);
- realloc_by_amount(base_name, start_size + adj, -adj, true);
-#else // INCLUDE_RANDOM_SIZE_TESTS
- T_LOG("Skipping random size tests");
-#endif // INCLUDE_RANDOM_SIZE_TESTS
-
- adj = vm_page_size;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -adj, false);
-
- adj = 4 * vm_page_size;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -adj, false);
-
- // Adjust up and then down by over half the size of the allocation --
- // this skips the fast path in some allocators.
- adj = 4 * vm_page_size;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -(((ssize_t)start_size) + adj)/2 - 1, false);
-
- adj = 32;
- realloc_by_amount(base_name, start_size, adj, false);
- realloc_by_amount(base_name, start_size + adj, -(((ssize_t)start_size) + adj)/2 - 1, false);
-}
-
-static void
-realloc_tests(const char *base_name, boolean_t using_nano)
-{
- // tiny or nano
- realloc_test_set(using_nano ? base_name : "Tiny", 8);
-
- if (!using_nano) {
- // No point in running these tests three times.
-
- // tiny
- realloc_test_set("Tiny", 512);
-
- // small
- realloc_test_set("Small", 2048);
-
- // large
- realloc_test_set("Large", 128 * 1024);
- }
-
- T_END;
-}
-
-#pragma mark -
-#pragma mark Tests for realloc()
-
-T_DECL(realloc_perf_base, "realloc without nano",
- T_META_TAG_PERF, T_META_TAG_VM_NOT_PREFERRED,
- T_META_ENVVAR("MallocNanoZone=0"))
-{
- realloc_tests("NoNano", false);
-}
-
-T_DECL(realloc_perf_nanov2, "realloc with nanoV2",
- T_META_TAG_PERF, T_META_TAG_VM_NOT_PREFERRED,
- T_META_ENVVAR("MallocNanoZone=V2"))
-{
-#if CONFIG_NANOZONE
- realloc_tests("Nanov2", true);
-#else // CONFIG_NANOZONE
- T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
-}