1/*
2 * Copyright (C) 2015 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 "jni.h"
18
19#include "base/logging.h"
20#include "dex_file-inl.h"
21#include "jit/jit.h"
22#include "jit/jit_code_cache.h"
23#include "mirror/class-inl.h"
24#include "nth_caller_visitor.h"
25#include "oat_quick_method_header.h"
26#include "runtime.h"
27#include "scoped_thread_state_change.h"
28#include "ScopedUtfChars.h"
29#include "stack.h"
30#include "thread-inl.h"
31
32namespace art {
33
34// public static native boolean hasOatFile();
35
36extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasOatFile(JNIEnv* env, jclass cls) {
37  ScopedObjectAccess soa(env);
38
39  mirror::Class* klass = soa.Decode<mirror::Class*>(cls);
40  const DexFile& dex_file = klass->GetDexFile();
41  const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile();
42  return (oat_dex_file != nullptr) ? JNI_TRUE : JNI_FALSE;
43}
44
45// public static native boolean runtimeIsSoftFail();
46
47extern "C" JNIEXPORT jboolean JNICALL Java_Main_runtimeIsSoftFail(JNIEnv* env ATTRIBUTE_UNUSED,
48                                                                  jclass cls ATTRIBUTE_UNUSED) {
49  return Runtime::Current()->IsVerificationSoftFail() ? JNI_TRUE : JNI_FALSE;
50}
51
52// public static native boolean isDex2OatEnabled();
53
54extern "C" JNIEXPORT jboolean JNICALL Java_Main_isDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED,
55                                                                 jclass cls ATTRIBUTE_UNUSED) {
56  return Runtime::Current()->IsDex2OatEnabled();
57}
58
59// public static native boolean hasImage();
60
61extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasImage(JNIEnv* env ATTRIBUTE_UNUSED,
62                                                         jclass cls ATTRIBUTE_UNUSED) {
63  return Runtime::Current()->GetHeap()->HasBootImageSpace();
64}
65
66// public static native boolean isImageDex2OatEnabled();
67
68extern "C" JNIEXPORT jboolean JNICALL Java_Main_isImageDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED,
69                                                                      jclass cls ATTRIBUTE_UNUSED) {
70  return Runtime::Current()->IsImageDex2OatEnabled();
71}
72
73// public static native boolean compiledWithOptimizing();
74// Did we use the optimizing compiler to compile this?
75
76extern "C" JNIEXPORT jboolean JNICALL Java_Main_compiledWithOptimizing(JNIEnv* env, jclass cls) {
77  ScopedObjectAccess soa(env);
78
79  mirror::Class* klass = soa.Decode<mirror::Class*>(cls);
80  const DexFile& dex_file = klass->GetDexFile();
81  const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile();
82  if (oat_dex_file == nullptr) {
83    // Could be JIT, which also uses optimizing, but conservatively say no.
84    return JNI_FALSE;
85  }
86  const OatFile* oat_file = oat_dex_file->GetOatFile();
87  CHECK(oat_file != nullptr);
88
89  const char* cmd_line = oat_file->GetOatHeader().GetStoreValueByKey(OatHeader::kDex2OatCmdLineKey);
90  CHECK(cmd_line != nullptr);  // Huh? This should not happen.
91
92  // Check the backend.
93  constexpr const char* kCompilerBackend = "--compiler-backend=";
94  const char* backend = strstr(cmd_line, kCompilerBackend);
95  if (backend != nullptr) {
96    // If it's set, make sure it's optimizing.
97    backend += strlen(kCompilerBackend);
98    if (strncmp(backend, "Optimizing", strlen("Optimizing")) != 0) {
99      return JNI_FALSE;
100    }
101  }
102
103  // Check the filter.
104  constexpr const char* kCompilerFilter = "--compiler-filter=";
105  const char* filter = strstr(cmd_line, kCompilerFilter);
106  if (filter != nullptr) {
107    // If it's set, make sure it's not interpret-only|verify-none|verify-at-runtime.
108    // Note: The space filter might have an impact on the test, but ignore that for now.
109    filter += strlen(kCompilerFilter);
110    constexpr const char* kInterpretOnly = "interpret-only";
111    constexpr const char* kVerifyNone = "verify-none";
112    constexpr const char* kVerifyAtRuntime = "verify-at-runtime";
113    if (strncmp(filter, kInterpretOnly, strlen(kInterpretOnly)) == 0 ||
114        strncmp(filter, kVerifyNone, strlen(kVerifyNone)) == 0 ||
115        strncmp(filter, kVerifyAtRuntime, strlen(kVerifyAtRuntime)) == 0) {
116      return JNI_FALSE;
117    }
118  }
119
120  return JNI_TRUE;
121}
122
123extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitCompiled(JNIEnv* env,
124                                                             jclass,
125                                                             jclass cls,
126                                                             jstring method_name) {
127  jit::Jit* jit = Runtime::Current()->GetJit();
128  if (jit == nullptr) {
129    return;
130  }
131
132  ScopedObjectAccess soa(Thread::Current());
133
134  ScopedUtfChars chars(env, method_name);
135  CHECK(chars.c_str() != nullptr);
136
137  mirror::Class* klass = soa.Decode<mirror::Class*>(cls);
138  ArtMethod* method = klass->FindDeclaredDirectMethodByName(chars.c_str(), sizeof(void*));
139
140  jit::JitCodeCache* code_cache = jit->GetCodeCache();
141  OatQuickMethodHeader* header = nullptr;
142  // Make sure there is a profiling info, required by the compiler.
143  ProfilingInfo::Create(soa.Self(), method, /* retry_allocation */ true);
144  while (true) {
145    header = OatQuickMethodHeader::FromEntryPoint(method->GetEntryPointFromQuickCompiledCode());
146    if (code_cache->ContainsPc(header->GetCode())) {
147      break;
148    } else {
149      // Sleep to yield to the compiler thread.
150      usleep(1000);
151      // Will either ensure it's compiled or do the compilation itself.
152      jit->CompileMethod(method, soa.Self(), /* osr */ false);
153    }
154  }
155}
156
157}  // namespace art
158