1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_JIT_JIT_H_
#define ART_RUNTIME_JIT_JIT_H_
#include <unordered_map>
#include "atomic.h"
#include "base/macros.h"
#include "base/mutex.h"
#include "base/timing_logger.h"
#include "gc_root.h"
#include "jni.h"
#include "object_callbacks.h"
#include "offline_profiling_info.h"
#include "thread_pool.h"
namespace art {
class ArtMethod;
struct RuntimeArgumentMap;
namespace jit {
class JitCodeCache;
class JitInstrumentationCache;
class JitOptions;
class Jit {
public:
static constexpr bool kStressMode = kIsDebugBuild;
static constexpr size_t kDefaultCompileThreshold = kStressMode ? 2 : 500;
static constexpr size_t kDefaultWarmupThreshold = kDefaultCompileThreshold / 2;
virtual ~Jit();
static Jit* Create(JitOptions* options, std::string* error_msg);
bool CompileMethod(ArtMethod* method, Thread* self, bool osr)
SHARED_REQUIRES(Locks::mutator_lock_);
void CreateInstrumentationCache(size_t compile_threshold,
size_t warmup_threshold,
size_t osr_threshold);
void CreateThreadPool();
const JitCodeCache* GetCodeCache() const {
return code_cache_.get();
}
JitCodeCache* GetCodeCache() {
return code_cache_.get();
}
void DeleteThreadPool();
// Dump interesting info: #methods compiled, code vs data size, compile / verify cumulative
// loggers.
void DumpInfo(std::ostream& os);
// Add a timing logger to cumulative_timings_.
void AddTimingLogger(const TimingLogger& logger);
JitInstrumentationCache* GetInstrumentationCache() const {
return instrumentation_cache_.get();
}
// Starts the profile saver if the config options allow profile recording.
// The profile will be stored in the specified `filename` and will contain
// information collected from the given `code_paths` (a set of dex locations).
// The `foreign_dex_profile_path` is the path where the saver will put the
// profile markers for loaded dex files which are not owned by the application.
// The `app_dir` is the application directory and is used to decide which
// dex files belong to the application.
void StartProfileSaver(const std::string& filename,
const std::vector<std::string>& code_paths,
const std::string& foreign_dex_profile_path,
const std::string& app_dir);
void StopProfileSaver();
void DumpForSigQuit(std::ostream& os) {
DumpInfo(os);
}
static void NewTypeLoadedIfUsingJit(mirror::Class* type)
SHARED_REQUIRES(Locks::mutator_lock_);
// If debug info generation is turned on then write the type information for types already loaded
// into the specified class linker to the jit debug interface,
void DumpTypeInfoForLoadedTypes(ClassLinker* linker);
// Return whether we should try to JIT compiled code as soon as an ArtMethod is invoked.
bool JitAtFirstUse();
// Return whether we can invoke JIT code for `method`.
bool CanInvokeCompiledCode(ArtMethod* method);
// If an OSR compiled version is available for `method`,
// and `dex_pc + dex_pc_offset` is an entry point of that compiled
// version, this method will jump to the compiled code, let it run,
// and return true afterwards. Return false otherwise.
static bool MaybeDoOnStackReplacement(Thread* thread,
ArtMethod* method,
uint32_t dex_pc,
int32_t dex_pc_offset,
JValue* result)
SHARED_REQUIRES(Locks::mutator_lock_);
private:
Jit();
bool LoadCompiler(std::string* error_msg);
// JIT compiler
void* jit_library_handle_;
void* jit_compiler_handle_;
void* (*jit_load_)(bool*);
void (*jit_unload_)(void*);
bool (*jit_compile_method_)(void*, ArtMethod*, Thread*, bool);
void (*jit_types_loaded_)(void*, mirror::Class**, size_t count);
// Performance monitoring.
bool dump_info_on_shutdown_;
CumulativeLogger cumulative_timings_;
std::unique_ptr<jit::JitInstrumentationCache> instrumentation_cache_;
std::unique_ptr<jit::JitCodeCache> code_cache_;
bool save_profiling_info_;
bool generate_debug_info_;
DISALLOW_COPY_AND_ASSIGN(Jit);
};
class JitOptions {
public:
static JitOptions* CreateFromRuntimeArguments(const RuntimeArgumentMap& options);
size_t GetCompileThreshold() const {
return compile_threshold_;
}
size_t GetWarmupThreshold() const {
return warmup_threshold_;
}
size_t GetOsrThreshold() const {
return osr_threshold_;
}
size_t GetCodeCacheInitialCapacity() const {
return code_cache_initial_capacity_;
}
size_t GetCodeCacheMaxCapacity() const {
return code_cache_max_capacity_;
}
bool DumpJitInfoOnShutdown() const {
return dump_info_on_shutdown_;
}
bool GetSaveProfilingInfo() const {
return save_profiling_info_;
}
bool UseJIT() const {
return use_jit_;
}
void SetUseJIT(bool b) {
use_jit_ = b;
}
void SetSaveProfilingInfo(bool b) {
save_profiling_info_ = b;
}
void SetJitAtFirstUse() {
use_jit_ = true;
compile_threshold_ = 0;
}
private:
bool use_jit_;
size_t code_cache_initial_capacity_;
size_t code_cache_max_capacity_;
size_t compile_threshold_;
size_t warmup_threshold_;
size_t osr_threshold_;
bool dump_info_on_shutdown_;
bool save_profiling_info_;
JitOptions()
: use_jit_(false),
code_cache_initial_capacity_(0),
code_cache_max_capacity_(0),
compile_threshold_(0),
dump_info_on_shutdown_(false),
save_profiling_info_(false) { }
DISALLOW_COPY_AND_ASSIGN(JitOptions);
};
} // namespace jit
} // namespace art
#endif // ART_RUNTIME_JIT_JIT_H_
|