1 /*
2 * Copyright (C) 2016 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 <sys/stat.h>
18 #include <stdio.h>
19 #include <string.h>
20
21 #include <atomic>
22 #include <string>
23
24 #include <jni.h>
25 #include <nativehelper/JNIHelp.h>
26 #include <nativehelper/ScopedUtfChars.h>
27
IsX86BuildArch()28 constexpr bool IsX86BuildArch() {
29 #if defined(__i386__)
30 return true;
31 #elif defined(__x86_64__)
32 return true;
33 #else
34 return false;
35 #endif
36 }
37
IsArmBuildArch()38 constexpr bool IsArmBuildArch() {
39 #if defined(__arm__)
40 return true;
41 #elif defined(__aarch64__)
42 return true;
43 #else
44 return false;
45 #endif
46 }
47
48 extern "C"
Java_libcore_libcore_util_NativeAllocationRegistryTest_isNativeBridgedABI(JNIEnv *,jclass)49 jboolean Java_libcore_libcore_util_NativeAllocationRegistryTest_isNativeBridgedABI(JNIEnv*, jclass) {
50 FILE* fp = popen("uname -m", "re");
51 char buf[128];
52 memset(buf, '\0', sizeof(buf));
53 char* str = fgets(buf, sizeof(buf), fp);
54 pclose(fp);
55 if (!str) {
56 // Assume no native bridge if cannot do uname.
57 return static_cast<jboolean>(false);
58 }
59
60 std::string uname_string = buf;
61 bool is_native_bridged_abi;
62 if (IsX86BuildArch()) {
63 is_native_bridged_abi = uname_string.find("86") == std::string::npos;
64 } else if (IsArmBuildArch()) {
65 is_native_bridged_abi = uname_string.find("arm") == std::string::npos &&
66 uname_string.find("aarch64") == std::string::npos;
67 } else {
68 is_native_bridged_abi = false;
69 }
70 return static_cast<jboolean>(is_native_bridged_abi);
71 }
72
73 std::atomic<uint64_t> gNumNativeBytesAllocated = 0;
74
finalize(uint64_t * ptr)75 static void finalize(uint64_t* ptr) {
76 gNumNativeBytesAllocated -= *ptr;
77 delete ptr;
78 }
79
80 extern "C"
Java_libcore_libcore_util_NativeAllocationRegistryTest_getNativeFinalizer(JNIEnv *,jclass)81 jlong Java_libcore_libcore_util_NativeAllocationRegistryTest_getNativeFinalizer(JNIEnv*, jclass) {
82 return static_cast<jlong>(reinterpret_cast<uintptr_t>(&finalize));
83 }
84
85 extern "C"
Java_libcore_libcore_util_NativeAllocationRegistryTest_doNativeAllocation(JNIEnv *,jclass,jlong size)86 jlong Java_libcore_libcore_util_NativeAllocationRegistryTest_doNativeAllocation(JNIEnv*,
87 jclass,
88 jlong size) {
89 gNumNativeBytesAllocated += size;
90
91 // The actual allocation is a pointer to the pretend size of the allocation.
92 uint64_t* ptr = new uint64_t;
93 *ptr = static_cast<uint64_t>(size);
94 return static_cast<jlong>(reinterpret_cast<uintptr_t>(ptr));
95 }
96
97 extern "C"
Java_libcore_libcore_util_NativeAllocationRegistryTest_getNumNativeBytesAllocated(JNIEnv *,jclass)98 jlong Java_libcore_libcore_util_NativeAllocationRegistryTest_getNumNativeBytesAllocated(JNIEnv*, jclass) {
99 return static_cast<jlong>(gNumNativeBytesAllocated);
100 }
101