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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#define BITS_PER_LONG (sizeof(long) * 8)
/* Don't include this, it's PPC-specific */
#define __CPU_H
static unsigned int cpu_max_pir = 1;
struct cpu_thread {
unsigned int chip_id;
};
#include <stdlib.h>
/* Use these before we undefine them below. */
static inline void *real_malloc(size_t size)
{
return malloc(size);
}
static inline void real_free(void *p)
{
return free(p);
}
#undef malloc
#undef free
#undef realloc
#include <skiboot.h>
#define is_rodata(p) true
#include "../mem_region.c"
#include "../malloc.c"
#include "../device.c"
#include "mem_region-malloc.h"
#define TEST_HEAP_ORDER 12
#define TEST_HEAP_SIZE (1ULL << TEST_HEAP_ORDER)
struct dt_node *dt_root;
void lock_caller(struct lock *l, const char *caller)
{
(void)caller;
assert(!l->lock_val);
l->lock_val = 1;
}
void unlock(struct lock *l)
{
assert(l->lock_val);
l->lock_val = 0;
}
bool lock_held_by_me(struct lock *l)
{
return l->lock_val;
}
static bool heap_empty(void)
{
const struct alloc_hdr *h = region_start(&skiboot_heap);
return h->num_longs == skiboot_heap.len / sizeof(long);
}
int main(void)
{
char *test_heap = real_malloc(TEST_HEAP_SIZE);
char *p, *p2, *p3, *p4;
char *pr;
size_t i;
/* Use malloc for the heap, so valgrind can find issues. */
skiboot_heap.start = (unsigned long)test_heap;
skiboot_heap.len = TEST_HEAP_SIZE;
/* Allocations of various sizes. */
for (i = 0; i < TEST_HEAP_ORDER; i++) {
p = malloc(1ULL << i);
assert(p);
assert(p > (char *)test_heap);
assert(p + (1ULL << i) <= (char *)test_heap + TEST_HEAP_SIZE);
assert(!skiboot_heap.free_list_lock.lock_val);
free(p);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
}
/* Realloc as malloc. */
skiboot_heap.free_list_lock.lock_val = 0;
p = realloc(NULL, 100);
assert(p);
assert(!skiboot_heap.free_list_lock.lock_val);
/* Realloc as free. */
p = realloc(p, 0);
assert(!p);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* Realloc longer. */
p = realloc(NULL, 100);
assert(p);
assert(!skiboot_heap.free_list_lock.lock_val);
p2 = realloc(p, 200);
assert(p2 == p);
assert(!skiboot_heap.free_list_lock.lock_val);
free(p2);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* Realloc shorter. */
skiboot_heap.free_list_lock.lock_val = 0;
p = realloc(NULL, 100);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(p);
p2 = realloc(p, 1);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(p2 == p);
free(p2);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* zalloc failure */
p2 = zalloc(TEST_HEAP_SIZE * 2);
assert(p2 == NULL);
/* Realloc with move. */
p2 = malloc(TEST_HEAP_SIZE - 64 - sizeof(struct alloc_hdr)*2);
memset(p2, 'a', TEST_HEAP_SIZE - 64 - sizeof(struct alloc_hdr)*2);
assert(p2);
p = malloc(64);
memset(p, 'b', 64);
p[63] = 'c';
assert(p);
free(p2);
p2 = realloc(p, 128);
assert(p2 != p);
assert(p2[63] == 'c');
free(p2);
assert(heap_empty());
assert(!skiboot_heap.free_list_lock.lock_val);
/* Realloc with failure to allocate new size */
p2 = malloc(TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
assert(p2);
memset(p2, 'a', TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
p = p2;
p2 = realloc(p, TEST_HEAP_SIZE*2);
assert(p2==NULL);
memset(p, 'b', TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
free(p);
/* Reproduce bug BZ109128/SW257364 */
p = malloc(100);
p2 = malloc(100);
p3 = malloc(100);
p4 = malloc(100);
free(p2);
pr = realloc(p,216);
assert(pr);
free(p3);
free(pr);
free(p4);
assert(heap_empty());
assert(!skiboot_heap.free_list_lock.lock_val);
real_free(test_heap);
return 0;
}
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