1 // Test thread_local_quarantine_size_kb
2
3 // RUN: %clangxx_asan %s -o %t
4 // RUN: %env_asan_opts=thread_local_quarantine_size_kb=64:quarantine_size_mb=64:verbosity=1 %run %t 2>&1 | \
5 // RUN: FileCheck %s --allow-empty --check-prefix=CHECK-SMALL-LOCAL-CACHE-SMALL-OVERHEAD
6 // RUN: %env_asan_opts=thread_local_quarantine_size_kb=0:quarantine_size_mb=0 %run %t 2>&1 | \
7 // RUN: FileCheck %s --check-prefix=CHECK-QUARANTINE-DISABLED-SMALL-OVERHEAD
8 // RUN: %env_asan_opts=thread_local_quarantine_size_kb=0:quarantine_size_mb=64 not %run %t 2>&1 | \
9 // RUN: FileCheck %s --check-prefix=CHECK-FOR-PARAMETER-ERROR
10
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <sanitizer/allocator_interface.h>
15
16 // The idea is allocate a lot of small blocks, totaling 5Mb of user memory,
17 // and verify that quarantine does not incur too much memory overhead.
18 // There's always an overhead for red zones, shadow memory and such, but
19 // quarantine accounting should not significantly contribute to that.
20 // The zero sized thread local cache is specifically tested since it used to
21 // generate a huge overhead of almost empty quarantine batches.
22 static const size_t kHeapSizeIncrementLimit = 12 << 20;
23 static const int kNumAllocs = 20000;
24 static const int kAllocSize = 256;
25
main()26 int main() {
27 size_t heap_size = __sanitizer_get_heap_size();
28 fprintf(stderr, "Heap size: %zd\n", heap_size);
29
30 for (int i = 0; i < kNumAllocs; i++) {
31 char *temp = new char[kAllocSize];
32 memset(temp, -1, kAllocSize);
33 delete [] (temp);
34 }
35
36 size_t new_heap_size = __sanitizer_get_heap_size();
37 fprintf(stderr, "New heap size: %zd\n", new_heap_size);
38 if (new_heap_size - heap_size < kHeapSizeIncrementLimit)
39 fprintf(stderr, "Heap growth is within limits\n");
40 }
41
42 // CHECK-SMALL-LOCAL-CACHE-SMALL-OVERHEAD: thread_local_quarantine_size_kb=64K
43 // CHECK-SMALL-LOCAL-CACHE-SMALL-OVERHEAD: Heap growth is within limits
44 // CHECK-QUARANTINE-DISABLED-SMALL-OVERHEAD: Heap growth is within limits
45 // CHECK-FOR-PARAMETER-ERROR: thread_local_quarantine_size_kb can be set to 0 only when quarantine_size_mb is set to 0
46