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libevl/tests/heap-torture.c

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/*
* SPDX-License-Identifier: MIT
*
* Copyright (C) 2018 Philippe Gerum <rpm@xenomai.org>
* Derived from Xenomai's heapmem smokey test (https://xenomai.org/)
*/
#include <sys/types.h>
#include <unistd.h>
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <error.h>
#include <pthread.h>
#include <sched.h>
#include <evl/clock.h>
#include <evl/thread.h>
#include <evl/heap.h>
#include <evl/proxy.h>
#include "helpers.h"
#define do_trace(__fmt, __args...) \
do { \
if (verbose) \
evl_printf(__fmt "\n", ##__args); \
} while (0)
#define do_warn(__fmt, __args...) \
fprintf(stderr, __fmt "\n", ##__args)
static struct evl_heap heap;
#define MIN_HEAP_SIZE 8192
#define MAX_HEAP_SIZE (1024 * 32) /* or -s <size> */
#define RANDOM_ROUNDS 3 /* or -r <count> */
#define PATTERN_HEAP_SIZE (1024 * 32) /* or -p <size> */
#define PATTERN_ROUNDS 1 /* or -c <count> */
static size_t seq_min_heap_size = MIN_HEAP_SIZE;
static size_t seq_max_heap_size = MAX_HEAP_SIZE;
static int random_rounds = RANDOM_ROUNDS;
static size_t pattern_heap_size = PATTERN_HEAP_SIZE;
static int pattern_rounds = PATTERN_ROUNDS;
static int verbose;
#define MEMCHECK_ZEROOVRD 1
#define MEMCHECK_SHUFFLE 2
#define MEMCHECK_PATTERN 4
#define MEMCHECK_HOT 8
struct run_statistics {
size_t heap_size;
size_t user_size;
size_t block_size;
size_t maximum_free;
size_t largest_free;
int nrblocks;
long alloc_avg_ns;
long alloc_max_ns;
long free_avg_ns;
long free_max_ns;
int flags;
struct run_statistics *next;
};
enum pattern {
alphabet_series,
digit_series,
binary_series,
};
struct chunk {
void *ptr;
enum pattern pattern;
};
static struct run_statistics *statistics;
static int nrstats;
static int max_results = 4;
static inline void breathe(int loops)
{
/*
* We need to leave some cycles free for the inband activity
* to progress, let's nap a bit during the test.
*/
if ((loops % 1000) == 0)
evl_usleep(300);
}
static inline long diff_ts(struct timespec *left, struct timespec *right)
{
return (long long)(left->tv_sec - right->tv_sec) * 1000000000
+ left->tv_nsec - right->tv_nsec;
}
static inline void swap(void *left, void *right, const size_t size)
{
char trans[size];
memcpy(trans, left, size);
memcpy(left, right, size);
memcpy(right, trans, size);
}
static void random_shuffle(void *vbase, size_t nmemb, const size_t size)
{
struct {
char x[size];
} __attribute__((packed)) *base = vbase;
unsigned int j, k;
double u;
for(j = nmemb; j > 0; j--) {
breathe(j);
u = (double)random() / RAND_MAX;
k = (unsigned int)(j * u) + 1;
if (j == k)
continue;
swap(&base[j - 1], &base[k - 1], size);
}
}
/* Reverse sort, high values first. */
#define compare_values(l, r) \
({ \
typeof(l) _l = (l); \
typeof(r) _r = (r); \
(_l > _r) - (_l < _r); \
})
static int sort_by_heap_size(const void *l, const void *r)
{
const struct run_statistics *ls = l, *rs = r;
return compare_values(rs->heap_size, ls->heap_size);
}
static int sort_by_alloc_time(const void *l, const void *r)
{
const struct run_statistics *ls = l, *rs = r;
return compare_values(rs->alloc_max_ns, ls->alloc_max_ns);
}
static int sort_by_free_time(const void *l, const void *r)
{
const struct run_statistics *ls = l, *rs = r;
return compare_values(rs->free_max_ns, ls->free_max_ns);
}
static int sort_by_frag(const void *l, const void *r)
{
const struct run_statistics *ls = l, *rs = r;
return compare_values(rs->maximum_free - rs->largest_free,
ls->maximum_free - ls->largest_free);
}
static int sort_by_overhead(const void *l, const void *r)
{
const struct run_statistics *ls = l, *rs = r;
return compare_values(rs->heap_size - rs->user_size,
ls->heap_size - ls->user_size);
}
static inline const char *get_debug_state(void)
{
#ifndef __OPTIMIZE__
return "\n(CAUTION: optimizer is disabled, heap sanity checks on)";
#else
return "";
#endif
}
static void memcheck_log_stat(struct run_statistics *st)
{
st->next = statistics;
statistics = st;
nrstats++;
}
static void __dump_stats(struct run_statistics *stats,
int (*sortfn)(const void *l, const void *r),
int nr, const char *key)
{
struct run_statistics *p;
int n;
qsort(stats, nrstats, sizeof(*p), sortfn);
do_trace("\nsorted by: max %s\n%8s %7s %7s %5s %5s %5s %5s %5s %5s %s",
key, "HEAPSZ", "BLOCKSZ", "NRBLKS", "AVG-A",
"AVG-F", "MAX-A", "MAX-F", "OVRH%", "FRAG%", "FLAGS");
for (n = 0; n < nr; n++) {
p = stats + n;
do_trace("%7zuk %7zu%s %6d %5.1f %5.1f %5.1f %5.1f %4.1f %5.1f %s%s%s",
p->heap_size / 1024,
p->block_size < 1024 ? p->block_size : p->block_size / 1024,
p->block_size < 1024 ? " " : "k",
p->nrblocks,
(double)p->alloc_avg_ns/1000.0,
(double)p->free_avg_ns/1000.0,
(double)p->alloc_max_ns/1000.0,
(double)p->free_max_ns/1000.0,
100.0 - (p->user_size * 100.0 / p->heap_size),
(1.0 - ((double)p->largest_free / p->maximum_free)) * 100.0,
p->alloc_avg_ns == 0 && p->free_avg_ns == 0 ? "FAILED " : "",
p->flags & MEMCHECK_SHUFFLE ? "+shuffle " : "",
p->flags & MEMCHECK_HOT ? "+hot" : "");
}
if (nr < nrstats)
do_trace(" ... (%d results following) ...", nrstats - nr);
}
static int dump_stats(const char *title)
{
long worst_alloc_max = 0, worst_free_max = 0;
double overhead_sum = 0.0, frag_sum = 0.0;
long max_alloc_sum = 0, max_free_sum = 0;
long avg_alloc_sum = 0, avg_free_sum = 0;
struct run_statistics *stats, *p, *next;
int n;
stats = malloc(sizeof(*p) * nrstats);
if (stats == NULL) {
do_warn("failed allocating memory");
return -ENOMEM;
}
for (n = 0, p = statistics; n < nrstats; n++, p = p->next)
stats[n] = *p;
do_trace("\n[%s] %s\n", title, get_debug_state());
do_trace("HEAPSZ test heap size");
do_trace("BLOCKSZ tested block size");
do_trace("NRBLKS number of blocks allocatable in heap");
do_trace("AVG-A average time to allocate block (us)");
do_trace("AVG-F average time to free block (us)");
do_trace("MAX-A max time to allocate block (us)");
do_trace("MAX-F max time to free block (us)");
do_trace("OVRH%% overhead");
do_trace("FRAG%% external fragmentation");
do_trace("FLAGS%% +shuffle: randomized free");
do_trace(" +hot: measure after initial alloc/free pass (hot heap)");
if (max_results > 0) {
if (max_results > nrstats)
max_results = nrstats;
__dump_stats(stats, sort_by_alloc_time, max_results, "alloc time");
__dump_stats(stats, sort_by_free_time, max_results, "free time");
__dump_stats(stats, sort_by_overhead, max_results, "overhead");
__dump_stats(stats, sort_by_frag, max_results, "fragmentation");
} else if (max_results < 0)
__dump_stats(stats, sort_by_heap_size, nrstats, "heap size");
free(stats);
for (p = statistics; p; p = next) {
max_alloc_sum += p->alloc_max_ns;
max_free_sum += p->free_max_ns;
avg_alloc_sum += p->alloc_avg_ns;
avg_free_sum += p->free_avg_ns;
overhead_sum += 100.0 - (p->user_size * 100.0 / p->heap_size);
frag_sum += (1.0 - ((double)p->largest_free / p->maximum_free)) * 100.0;
if (p->alloc_max_ns > worst_alloc_max)
worst_alloc_max = p->alloc_max_ns;
if (p->free_max_ns > worst_free_max)
worst_free_max = p->free_max_ns;
next = p->next;
free(p);
}
do_trace("\noverall:");
do_trace(" worst alloc time: %.1f (us)",
(double)worst_alloc_max / 1000.0);
do_trace(" worst free time: %.1f (us)",
(double)worst_free_max / 1000.0);
do_trace(" average of max. alloc times: %.1f (us)",
(double)max_alloc_sum / nrstats / 1000.0);
do_trace(" average of max. free times: %.1f (us)",
(double)max_free_sum / nrstats / 1000.0);
do_trace(" average alloc time: %.1f (us)",
(double)avg_alloc_sum / nrstats / 1000.0);
do_trace(" average free time: %.1f (us)",
(double)avg_free_sum / nrstats / 1000.0);
do_trace(" average overhead: %.1f%%",
(double)overhead_sum / nrstats);
do_trace(" average fragmentation: %.1f%%",
(double)frag_sum / nrstats);
statistics = NULL;
nrstats = 0;
return 0;
}
static void fill_pattern(char *p, size_t size, enum pattern pat)
{
unsigned int val, count;
switch (pat) {
case alphabet_series:
val = 'a';
count = 26;
break;
case digit_series:
val = '0';
count = 10;
break;
default:
val = 0;
count = 255;
break;
}
while (size-- > 0) {
*p++ = (char)(val % count);
val++;
}
}
static int check_pattern(const char *p, size_t size, enum pattern pat)
{
unsigned int val, count;
switch (pat) {
case alphabet_series:
val = 'a';
count = 26;
break;
case digit_series:
val = '0';
count = 10;
break;
default:
val = 0;
count = 255;
break;
}
while (size-- > 0) {
if (*p++ != (char)(val % count))
return 0;
val++;
}
return 1;
}
static size_t find_largest_free(size_t free_size, size_t block_size)
{
void *p;
for (;;) {
p = evl_alloc_block(&heap, free_size);
if (p) {
evl_free_block(&heap, p);
break;
}
if (free_size <= block_size)
break;
free_size -= block_size;
}
return free_size;
}
static int test_seq(size_t heap_size, size_t block_size, int flags)
{
size_t raw_size, user_size, largest_free, maximum_free, freed;
long alloc_sum_ns, alloc_avg_ns, free_sum_ns, free_avg_ns,
alloc_max_ns, free_max_ns, d;
int ret, n, k, maxblocks, nrblocks;
struct timespec start, end;
struct run_statistics *st;
struct chunk *chunks;
bool done_frag;
void *mem, *p;
raw_size = EVL_HEAP_RAW_SIZE(heap_size);
mem = malloc(raw_size);
if (mem == NULL)
return -ENOMEM;
maxblocks = heap_size / block_size;
ret = evl_init_heap(&heap, mem, raw_size);
if (ret) {
do_trace("cannot init heap with raw size %zu",
raw_size);
goto out;
}
chunks = calloc(sizeof(*chunks), maxblocks);
if (chunks == NULL) {
ret = -ENOMEM;
goto no_chunks;
}
if (evl_heap_size(&heap) != heap_size) {
do_trace("memory size inconsistency (%zu / %zu bytes)",
heap_size, evl_heap_size(&heap));
goto bad;
}
user_size = 0;
alloc_avg_ns = 0;
free_avg_ns = 0;
alloc_max_ns = 0;
free_max_ns = 0;
largest_free = 0;
maximum_free = 0;
/*
* Make sure to run out-of-band before the first allocation
* call takes place, not to charge any switch time to the
* allocator.
*/
evl_switch_oob();
for (n = 0, alloc_sum_ns = 0; ; n++) {
evl_read_clock(EVL_CLOCK_MONOTONIC, &start);
p = evl_alloc_block(&heap, block_size);
evl_read_clock(EVL_CLOCK_MONOTONIC, &end);
d = diff_ts(&end, &start);
if (d > alloc_max_ns)
alloc_max_ns = d;
alloc_sum_ns += d;
if (p == NULL)
break;
user_size += block_size;
if (n >= maxblocks) {
do_trace("too many blocks fetched"
" (heap=%zu, block=%zu, "
"got more than %d blocks)",
heap_size, block_size, maxblocks);
goto bad;
}
chunks[n].ptr = p;
if (flags & MEMCHECK_PATTERN) {
chunks[n].pattern = (enum pattern)(random() % 3);
fill_pattern(chunks[n].ptr, block_size, chunks[n].pattern);
}
breathe(n);
}
nrblocks = n;
if (nrblocks == 0)
goto do_stats;
if ((flags & MEMCHECK_ZEROOVRD) && nrblocks != maxblocks) {
do_trace("too few blocks fetched, unexpected overhead"
" (heap=%zu, block=%zu, "
"got %d, less than %d blocks)",
heap_size, block_size, nrblocks, maxblocks);
goto bad;
}
breathe(0);
/* Make sure we did not trash any busy block while allocating. */
if (flags & MEMCHECK_PATTERN) {
for (n = 0; n < nrblocks; n++) {
if (!check_pattern(chunks[n].ptr, block_size,
chunks[n].pattern)) {
do_trace("corrupted block #%d on alloc"
" sequence (pattern %d)",
n, chunks[n].pattern);
goto bad;
}
breathe(n);
}
}
if (flags & MEMCHECK_SHUFFLE)
random_shuffle(chunks, nrblocks, sizeof(*chunks));
evl_switch_oob();
/*
* Release all blocks.
*/
for (n = 0, free_sum_ns = 0, freed = 0, done_frag = false;
n < nrblocks; n++) {
evl_read_clock(EVL_CLOCK_MONOTONIC, &start);
ret = evl_free_block(&heap, chunks[n].ptr);
evl_read_clock(EVL_CLOCK_MONOTONIC, &end);
if (ret) {
do_trace("failed to free block %p "
"(heap=%zu, block=%zu)",
chunks[n].ptr, heap_size, block_size);
goto bad;
}
d = diff_ts(&end, &start);
if (d > free_max_ns)
free_max_ns = d;
free_sum_ns += d;
chunks[n].ptr = NULL;
/* Make sure we did not trash busy blocks while freeing. */
if (flags & MEMCHECK_PATTERN) {
for (k = 0; k < nrblocks; k++) {
if (chunks[k].ptr &&
!check_pattern(chunks[k].ptr, block_size,
chunks[k].pattern)) {
do_trace("corrupted block #%d on release"
" sequence (pattern %d)",
k, chunks[k].pattern);
goto bad;
}
breathe(k);
}
}
freed += block_size;
/*
* Get a sense of the fragmentation for the tested
* allocation pattern, heap and block sizes when half
* of the usable heap size should be available to us.
* NOTE: user_size excludes the overhead, this is
* actually what we managed to get from the current
* heap out of the allocation loop.
*/
if (!done_frag && freed >= user_size / 2) {
/* Calculate the external fragmentation. */
largest_free = find_largest_free(freed, block_size);
maximum_free = freed;
done_frag = true;
}
breathe(n);
}
/*
* If the deallocation mechanism is broken, we might not be
* able to reproduce the same allocation pattern with the same
* outcome, check this.
*/
if (flags & MEMCHECK_HOT) {
for (n = 0, alloc_max_ns = alloc_sum_ns = 0; ; n++) {
evl_read_clock(EVL_CLOCK_MONOTONIC, &start);
p = evl_alloc_block(&heap, block_size);
evl_read_clock(EVL_CLOCK_MONOTONIC, &end);
d = diff_ts(&end, &start);
if (d > alloc_max_ns)
alloc_max_ns = d;
alloc_sum_ns += d;
if (p == NULL)
break;
if (n >= maxblocks) {
do_trace("too many blocks fetched during hot pass"
" (heap=%zu, block=%zu, "
"got more than %d blocks)",
heap_size, block_size, maxblocks);
goto bad;
}
chunks[n].ptr = p;
breathe(n);
}
if (n != nrblocks) {
do_trace("inconsistent block count fetched during hot pass"
" (heap=%zu, block=%zu, "
"got %d blocks vs %d during alloc)",
heap_size, block_size, n, nrblocks);
goto bad;
}
for (n = 0, free_max_ns = free_sum_ns = 0; n < nrblocks; n++) {
evl_read_clock(EVL_CLOCK_MONOTONIC, &start);
ret = evl_free_block(&heap, chunks[n].ptr);
evl_read_clock(EVL_CLOCK_MONOTONIC, &end);
if (ret) {
do_trace("failed to free block %p during hot pass"
"(heap=%zu, block=%zu)",
chunks[n].ptr, heap_size, block_size);
goto bad;
}
d = diff_ts(&end, &start);
if (d > free_max_ns)
free_max_ns = d;
free_sum_ns += d;
breathe(n);
}
}
alloc_avg_ns = alloc_sum_ns / nrblocks;
free_avg_ns = free_sum_ns / nrblocks;
if ((flags & MEMCHECK_ZEROOVRD) && heap_size != user_size) {
do_trace("unexpected overhead reported");
goto bad;
}
if (evl_heap_used(&heap) > 0) {
do_trace("memory leakage reported: %zu bytes missing",
evl_heap_used(&heap));
goto bad;
}
/*
* Don't report stats when running a pattern check, timings
* are affected.
*/
do_stats:
breathe(0);
ret = 0;
if (!(flags & MEMCHECK_PATTERN)) {
st = malloc(sizeof(*st));
if (st == NULL) {
do_warn("failed allocating memory");
ret = -ENOMEM;
goto oom;
}
st->heap_size = heap_size;
st->user_size = user_size;
st->block_size = block_size;
st->nrblocks = nrblocks;
st->alloc_avg_ns = alloc_avg_ns;
st->alloc_max_ns = alloc_max_ns;
st->free_avg_ns = free_avg_ns;
st->free_max_ns = free_max_ns;
st->largest_free = largest_free;
st->maximum_free = maximum_free;
st->flags = flags;
memcheck_log_stat(st);
}
done:
free(chunks);
no_chunks:
evl_destroy_heap(&heap);
out:
if (ret)
do_trace("** FAILED(overhead %s, %sshuffle, %scheck, %shot): heapsz=%zuk, "
"blocksz=%zu, overhead=%zu (%.1f%%)",
flags & MEMCHECK_ZEROOVRD ? "disallowed" : "allowed",
flags & MEMCHECK_SHUFFLE ? "" : "no ",
flags & MEMCHECK_PATTERN ? "" : "no ",
flags & MEMCHECK_HOT ? "" : "no ",
heap_size / 1024, block_size,
raw_size - heap_size,
(raw_size * 100.0 / heap_size) - 100.0);
oom:
free(mem);
return ret;
bad:
ret = -EPROTO;
goto done;
}
static void usage(void)
{
fprintf(stderr, "usage: heap-torture [options]:\n");
fprintf(stderr, "-s --sequential-test-size heap size for sequential access tests\n");
fprintf(stderr, "-p --pattern-test-size heap size for pattern tests\n");
fprintf(stderr, "-c --pattern-check-rounds number of pattern tests\n");
fprintf(stderr, "-r --random-check-rounds number of random allocation tests\n");
fprintf(stderr, "-v --verbose turn on verbosity\n");
}
#define short_optlist "s:p:c:r:v"
static const struct option options[] = {
{
.name = "sequential-test-size",
.has_arg = required_argument,
.val = 's',
},
{
.name = "pattern-test-size",
.has_arg = required_argument,
.val = 'p',
},
{
.name = "pattern-check-rounds",
.has_arg = required_argument,
.val = 'c',
},
{
.name = "random-check-rounds",
.has_arg = required_argument,
.val = 'r',
},
{
.name = "verbose",
.has_arg = no_argument,
.val = 'v',
},
{ /* Sentinel */ }
};
int main(int argc, char *argv[])
{
size_t heap_size, block_size;
struct sched_param param;
cpu_set_t affinity;
unsigned long seed;
int ret, runs, c;
time_t now;
void *p;
for (;;) {
c = getopt_long(argc, argv, short_optlist, options, NULL);
if (c == EOF)
break;
switch (c) {
case 0:
break;
case 's':
seq_max_heap_size = atoi(optarg);
if (seq_max_heap_size <= 0)
error(1, EINVAL, "invalid heap size for sequential test "
"(<= 0)");
break;
case 'p':
pattern_heap_size = atoi(optarg);
if (pattern_heap_size <= 0)
error(1, EINVAL, "invalid heap size for pattern test "
"(<= 0)");
break;
case 'c':
pattern_rounds = atoi(optarg);
if (pattern_rounds <= 0)
error(1, EINVAL, "invalid round count for pattern test "
"(<= 0)");
break;
case 'r':
random_rounds = atoi(optarg);
if (random_rounds <= 0)
error(1, EINVAL, "invalid round count for random test "
"(<= 0)");
break;
case 'v':
verbose = 1;
break;
case '?':
default:
usage();
return 1;
}
}
if (optind < argc) {
usage();
return 1;
}
/* Populate the malloc arena early. */
p = malloc(2 * 1024 * 1024);
free(p);
now = time(NULL);
seed = (unsigned long)now * getpid();
srandom(seed);
do_trace("== heap-torture started at %s", ctime(&now));
do_trace(" seq_heap_size=%zuk", seq_max_heap_size / 1024);
do_trace(" random_alloc_rounds=%d", random_rounds);
do_trace(" pattern_heap_size=%zuk", pattern_heap_size / 1024);
do_trace(" pattern_check_rounds=%d", pattern_rounds);
CPU_ZERO(&affinity);
CPU_SET(0, &affinity);
ret = sched_setaffinity(0, sizeof(affinity), &affinity);
if (ret) {
do_warn("failed setting CPU affinity");
return ret;
}
param.sched_priority = 1;
pthread_setschedparam(pthread_self(), SCHED_FIFO, &param);
__Tcall_assert(ret, evl_attach_self("heap-torture:%d", getpid()));
/*
* Create a series of heaps of increasing size, allocating
* then freeing all blocks sequentially from them, ^2 block
* sizes up to half of the heap size. Test multiple patterns:
*
* - alloc -> free_in_alloc_order
* - alloc -> free_in_alloc_order -> (re)alloc
* - alloc -> free_in_random_order
* - alloc -> free_in_random_order -> (re)alloc
*/
for (heap_size = seq_min_heap_size;
heap_size < seq_max_heap_size; heap_size <<= 1) {
for (block_size = 16;
block_size < heap_size / 2; block_size <<= 1) {
ret = test_seq(heap_size, block_size,
MEMCHECK_ZEROOVRD);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (pow2)",
heap_size / 1024, block_size);
return -ret;
}
}
for (block_size = 16;
block_size < heap_size / 2; block_size <<= 1) {
ret = test_seq(heap_size, block_size,
MEMCHECK_ZEROOVRD|MEMCHECK_HOT);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (pow2, hot)",
heap_size / 1024, block_size);
return -ret;
}
}
for (block_size = 16;
block_size < heap_size / 2; block_size <<= 1) {
ret = test_seq(heap_size, block_size,
MEMCHECK_ZEROOVRD|MEMCHECK_SHUFFLE);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (pow2, shuffle)",
heap_size / 1024, block_size);
return -ret;
}
}
for (block_size = 16;
block_size < heap_size / 2; block_size <<= 1) {
ret = test_seq(heap_size, block_size,
MEMCHECK_ZEROOVRD|MEMCHECK_HOT|MEMCHECK_SHUFFLE);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (pow2, shuffle, hot)",
heap_size / 1024, block_size);
return -ret;
}
}
}
ret = dump_stats("SEQUENTIAL ALLOC->FREE, ^2 BLOCK SIZES");
if (ret)
return ret;
/*
* Create a series of heaps of increasing size, allocating
* then freeing all blocks sequentially from them, random
* block sizes. Test multiple patterns as previously with ^2
* block sizes.
*/
for (heap_size = seq_min_heap_size;
heap_size < seq_max_heap_size; heap_size <<= 1) {
for (runs = 0; runs < random_rounds; runs++) {
block_size = (random() % (heap_size / 2)) ?: 1;
ret = test_seq(heap_size, block_size, 0);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (random)",
heap_size / 1024, block_size);
return -ret;
}
}
}
for (heap_size = seq_min_heap_size;
heap_size < seq_max_heap_size; heap_size <<= 1) {
for (runs = 0; runs < random_rounds; runs++) {
block_size = (random() % (heap_size / 2)) ?: 1;
ret = test_seq(heap_size, block_size,
MEMCHECK_HOT);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (random, hot)",
heap_size / 1024, block_size);
return -ret;
}
}
}
for (heap_size = seq_min_heap_size;
heap_size < seq_max_heap_size; heap_size <<= 1) {
for (runs = 0; runs < random_rounds; runs++) {
block_size = (random() % (heap_size / 2)) ?: 1;
ret = test_seq(heap_size, block_size,
MEMCHECK_SHUFFLE);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (random, shuffle)",
heap_size / 1024, block_size);
return ret;
}
}
}
for (heap_size = seq_min_heap_size;
heap_size < seq_max_heap_size; heap_size <<= 1) {
for (runs = 0; runs < random_rounds; runs++) {
block_size = (random() % (heap_size / 2)) ?: 1;
ret = test_seq(heap_size, block_size,
MEMCHECK_HOT|MEMCHECK_SHUFFLE);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (random, shuffle, hot)",
heap_size / 1024, block_size);
return ret;
}
}
}
ret = dump_stats("SEQUENTIAL ALLOC->FREE, RANDOM BLOCK SIZES");
if (ret)
return ret;
do_trace("\n(running the pattern check test"
" -- this may take some time)");
for (runs = 0; runs < pattern_rounds; runs++) {
block_size = (random() % (pattern_heap_size / 2)) ?: 1;
ret = test_seq(pattern_heap_size, block_size,
MEMCHECK_SHUFFLE|MEMCHECK_PATTERN);
if (ret) {
do_trace("failed with %zuk heap, "
"%zu-byte block (random, shuffle, check)",
pattern_heap_size / 1024, block_size);
return ret;
}
}
now = time(NULL);
do_trace("\n== heap-torture finished at %s", ctime(&now));
return ret;
}
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