1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <inttypes.h>
20 #include <malloc.h>
21 #include <limits.h>
22 #include <stdint.h>
23 #include <stdio.h>
24 #include <string.h>
25 #include <unistd.h>
26
27 #include <thread>
28 #include <vector>
29
30 #include <android-base/strings.h>
31 #if defined(__BIONIC__)
32 #include <meminfo/procmeminfo.h>
33 #include <procinfo/process_map.h>
34 #endif
35
TEST(malloc_stress,multiple_threads_forever)36 TEST(malloc_stress, multiple_threads_forever) {
37 constexpr size_t kMaxThreads = 256;
38 constexpr size_t kAllocSize = 4096;
39 #if defined(__BIONIC__)
40 uint64_t rss_min = UINT64_MAX;
41 uint64_t rss_max = 0;
42 uint64_t vss_min = UINT64_MAX;
43 uint64_t vss_max = 0;
44 ASSERT_EQ(1, mallopt(M_DECAY_TIME, 1));
45 #endif
46 uint64_t mallinfo_min = UINT64_MAX;
47 uint64_t mallinfo_max = 0;
48 for (size_t i = 0; ; i++) {
49 printf("Pass %zu\n", i);
50
51 std::vector<std::thread*> threads;
52 for (size_t i = 0; i < kMaxThreads; i++) {
53 threads.push_back(new std::thread([]() {
54 void* buf = malloc(4096);
55 if (buf == nullptr) {
56 printf("Failed to allocate memory\n");
57 _exit(1);
58 }
59 memset(buf, 0, kAllocSize);
60 sleep(1);
61 free(buf);
62 }));
63 }
64
65 for (auto thread : threads) {
66 thread->join();
67 delete thread;
68 }
69 threads.clear();
70
71 #if defined(__BIONIC__)
72 android::meminfo::ProcMemInfo proc_mem(getpid());
73 const std::vector<android::meminfo::Vma>& maps = proc_mem.MapsWithoutUsageStats();
74 uint64_t rss_bytes = 0;
75 uint64_t vss_bytes = 0;
76 for (auto& vma : maps) {
77 if (vma.name == "[anon:libc_malloc]" || android::base::StartsWith(vma.name, "[anon:scudo:") ||
78 android::base::StartsWith(vma.name, "[anon:GWP-ASan")) {
79 android::meminfo::Vma update_vma(vma);
80 ASSERT_TRUE(proc_mem.FillInVmaStats(update_vma));
81 rss_bytes += update_vma.usage.rss;
82 vss_bytes += update_vma.usage.vss;
83 }
84 }
85 if (rss_bytes < rss_min) {
86 rss_min = rss_bytes;
87 }
88 if (rss_bytes > rss_max) {
89 rss_max = rss_bytes;
90 }
91 if (vss_bytes < vss_min) {
92 vss_min = vss_bytes;
93 }
94 if (vss_bytes > vss_max) {
95 vss_max = vss_bytes;
96 }
97 printf("RSS %" PRIu64 " %0.2fMB\n", rss_bytes, rss_bytes / (1024.0 * 1024.0));
98 printf(" Min %" PRIu64 " %0.2fMB\n", rss_min, rss_min / (1024.0 * 1024.0));
99 printf(" Max %" PRIu64 " %0.2fMB\n", rss_max, rss_max / (1024.0 * 1024.0));
100 printf("VSS %" PRIu64 " %0.2f MB\n", vss_bytes, vss_bytes / (1024.0 * 1024.0));
101 printf(" Min %" PRIu64 " %0.2fMB\n", vss_min, vss_min / (1024.0 * 1024.0));
102 printf(" Max %" PRIu64 " %0.2fMB\n", vss_max, vss_max / (1024.0 * 1024.0));
103 #endif
104
105 size_t mallinfo_bytes = mallinfo().uordblks;
106 if (mallinfo_bytes < mallinfo_min) {
107 mallinfo_min = mallinfo_bytes;
108 }
109 if (mallinfo_bytes > mallinfo_max) {
110 mallinfo_max = mallinfo_bytes;
111 }
112 printf("Allocated memory %zu %0.2fMB\n", mallinfo_bytes, mallinfo_bytes / (1024.0 * 1024.0));
113 printf(" Min %" PRIu64 " %0.2fMB\n", mallinfo_min, mallinfo_min / (1024.0 * 1024.0));
114 printf(" Max %" PRIu64 " %0.2fMB\n", mallinfo_max, mallinfo_max / (1024.0 * 1024.0));
115 }
116 }
117