1// Tests __hwasan_print_memory_usage.
2// RUN: %clang_hwasan %s -o %t
3// RUN: ulimit -s 1000
4// RUN: %run %t 2>&1 | FileCheck %s
5
6#include <pthread.h>
7#include <stdlib.h>
8#include <stdio.h>
9#include <string.h>
10
11#include <sanitizer/hwasan_interface.h>
12
13int state;
14__thread volatile char *sink;
15
16__attribute__((noinline))
17void *malloc_and_use(int size) {
18 char *x = (char*)malloc(size: size);
19 for (int i = 0; i < size; i++)
20 x[i] = 42; // make this memory used.
21 return x;
22}
23
24void *T1(void *arg) {
25 for (int i = 1; i <= (1 << 20); i *= 2) {
26 sink = malloc_and_use(size: i);
27 free(sink);
28 }
29
30 __sync_fetch_and_add(&state, 1);
31 while (__sync_fetch_and_add(&state, 0) != 4) {}
32 return NULL;
33}
34
35void *T4(void *arg) { return NULL; }
36
37int main() {
38 __hwasan_enable_allocator_tagging();
39 sink = malloc_and_use(size: 10);
40
41 __hwasan_print_memory_usage();
42 // CHECK: HWASAN pid: [[PID:[0-9]*]] rss: {{.*}} threads: 1 stacks: [[STACKS:[0-9]*]] thr_aux: {{.*}} stack_depot: {{.*}} uniq_stacks: [[UNIQ_STACKS:[0-9]*]] heap: [[HEAP:[0-9]*]]
43
44 void *one_meg = malloc_and_use(size: 1 << 20);
45
46 __hwasan_print_memory_usage();
47 // CHECK: HWASAN pid: [[PID]] rss: {{.*}} threads: 1 stacks: [[STACKS]] thr_aux: {{.*}} stack_depot: {{.*}}
48
49 free(ptr: one_meg);
50
51 __hwasan_print_memory_usage();
52 // CHECK: HWASAN pid: [[PID]] rss: {{.*}} threads: 1 stacks: [[STACKS]] thr_aux: {{.*}} stack_depot: {{.*}} uniq_stacks: {{.*}} heap: [[HEAP]]
53
54 pthread_t t1, t2, t3, t4;
55
56 pthread_create(newthread: &t1, NULL, start_routine: T1, NULL);
57 pthread_create(newthread: &t2, NULL, start_routine: T1, NULL);
58 pthread_create(newthread: &t3, NULL, start_routine: T1, NULL);
59 pthread_create(newthread: &t4, NULL, start_routine: T4, NULL);
60 while (__sync_fetch_and_add(&state, 0) != 3) {}
61 pthread_join(th: t4, NULL);
62
63 __hwasan_print_memory_usage();
64 // CHECK: HWASAN pid: [[PID]] rss: {{.*}} threads: 4 stacks:
65
66 __sync_fetch_and_add(&state, 1);
67 pthread_join(th: t1, NULL);
68 pthread_join(th: t2, NULL);
69 pthread_join(th: t3, NULL);
70 __hwasan_print_memory_usage();
71 // CHECK: HWASAN pid: [[PID]] rss: {{.*}} threads: 1 stacks: [[STACKS]]
72}
73

source code of compiler-rt/test/hwasan/TestCases/print-memory-usage.c