1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// RUN: %clang_scudo %s -o %t
// RUN: %env_scudo_opts="QuarantineSizeKb=0:ThreadLocalQuarantineSizeKb=0" %run %t 5 1000000 2>&1
// RUN: %env_scudo_opts="QuarantineSizeKb=1024:ThreadLocalQuarantineSizeKb=64" %run %t 5 1000000 2>&1
// Tests parallel allocations and deallocations of memory chunks from a number
// of concurrent threads, with and without quarantine.
// This test passes if everything executes properly without crashing.
#include <assert.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sanitizer/allocator_interface.h>
int num_threads;
int total_num_alloc;
const int kMaxNumThreads = 500;
pthread_t tid[kMaxNumThreads];
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
char go = 0;
void *thread_fun(void *arg) {
pthread_mutex_lock(&mutex);
while (!go)
pthread_cond_wait(&cond, &mutex);
pthread_mutex_unlock(&mutex);
for (int i = 0; i < total_num_alloc / num_threads; i++) {
void *p = malloc(10);
__asm__ __volatile__(""
:
: "r"(p)
: "memory");
free(p);
}
return 0;
}
int main(int argc, char **argv) {
assert(argc == 3);
num_threads = atoi(argv[1]);
assert(num_threads > 0);
assert(num_threads <= kMaxNumThreads);
total_num_alloc = atoi(argv[2]);
assert(total_num_alloc > 0);
printf("%d threads, %d allocations in each\n", num_threads,
total_num_alloc / num_threads);
fprintf(stderr, "Heap size before: %zd\n", __sanitizer_get_heap_size());
fprintf(stderr, "Allocated bytes before: %zd\n",
__sanitizer_get_current_allocated_bytes());
for (int i = 0; i < num_threads; i++)
pthread_create(&tid[i], 0, thread_fun, 0);
pthread_mutex_lock(&mutex);
go = 1;
pthread_cond_broadcast(&cond);
pthread_mutex_unlock(&mutex);
for (int i = 0; i < num_threads; i++)
pthread_join(tid[i], 0);
fprintf(stderr, "Heap size after: %zd\n", __sanitizer_get_heap_size());
fprintf(stderr, "Allocated bytes after: %zd\n",
__sanitizer_get_current_allocated_bytes());
return 0;
}
|
