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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_CODE_EVENTS_H_
#define V8_CODE_EVENTS_H_
#include <unordered_set>
#include "src/base/platform/mutex.h"
#include "src/globals.h"
#include "src/vector.h"
namespace v8 {
namespace internal {
class AbstractCode;
class Name;
class SharedFunctionInfo;
class String;
namespace wasm {
class WasmCode;
using WasmName = Vector<const char>;
} // namespace wasm
#define LOG_EVENTS_LIST(V) \
V(CODE_CREATION_EVENT, code-creation) \
V(CODE_DISABLE_OPT_EVENT, code-disable-optimization) \
V(CODE_MOVE_EVENT, code-move) \
V(CODE_DELETE_EVENT, code-delete) \
V(CODE_MOVING_GC, code-moving-gc) \
V(SHARED_FUNC_MOVE_EVENT, sfi-move) \
V(SNAPSHOT_CODE_NAME_EVENT, snapshot-code-name) \
V(TICK_EVENT, tick)
#define TAGS_LIST(V) \
V(BUILTIN_TAG, Builtin) \
V(CALLBACK_TAG, Callback) \
V(EVAL_TAG, Eval) \
V(FUNCTION_TAG, Function) \
V(INTERPRETED_FUNCTION_TAG, InterpretedFunction) \
V(HANDLER_TAG, Handler) \
V(BYTECODE_HANDLER_TAG, BytecodeHandler) \
V(LAZY_COMPILE_TAG, LazyCompile) \
V(REG_EXP_TAG, RegExp) \
V(SCRIPT_TAG, Script) \
V(STUB_TAG, Stub) \
V(NATIVE_FUNCTION_TAG, Function) \
V(NATIVE_LAZY_COMPILE_TAG, LazyCompile) \
V(NATIVE_SCRIPT_TAG, Script)
// Note that 'NATIVE_' cases for functions and scripts are mapped onto
// original tags when writing to the log.
#define LOG_EVENTS_AND_TAGS_LIST(V) \
LOG_EVENTS_LIST(V) \
TAGS_LIST(V)
#define PROFILE(the_isolate, Call) (the_isolate)->code_event_dispatcher()->Call;
class CodeEventListener {
public:
#define DECLARE_ENUM(enum_item, _) enum_item,
enum LogEventsAndTags {
LOG_EVENTS_AND_TAGS_LIST(DECLARE_ENUM) NUMBER_OF_LOG_EVENTS
};
#undef DECLARE_ENUM
virtual ~CodeEventListener() {}
virtual void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
const char* comment) = 0;
virtual void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
Name* name) = 0;
virtual void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
SharedFunctionInfo* shared, Name* source) = 0;
virtual void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
SharedFunctionInfo* shared, Name* source,
int line, int column) = 0;
virtual void CodeCreateEvent(LogEventsAndTags tag, const wasm::WasmCode* code,
wasm::WasmName name) = 0;
virtual void CallbackEvent(Name* name, Address entry_point) = 0;
virtual void GetterCallbackEvent(Name* name, Address entry_point) = 0;
virtual void SetterCallbackEvent(Name* name, Address entry_point) = 0;
virtual void RegExpCodeCreateEvent(AbstractCode* code, String* source) = 0;
virtual void CodeMoveEvent(AbstractCode* from, AbstractCode* to) = 0;
virtual void SharedFunctionInfoMoveEvent(Address from, Address to) = 0;
virtual void CodeMovingGCEvent() = 0;
virtual void CodeDisableOptEvent(AbstractCode* code,
SharedFunctionInfo* shared) = 0;
virtual void CodeDeoptEvent(Code* code, DeoptimizeKind kind, Address pc,
int fp_to_sp_delta) = 0;
virtual bool is_listening_to_code_events() { return false; }
};
class CodeEventDispatcher {
public:
using LogEventsAndTags = CodeEventListener::LogEventsAndTags;
CodeEventDispatcher() {}
bool AddListener(CodeEventListener* listener) {
base::LockGuard<base::Mutex> guard(&mutex_);
return listeners_.insert(listener).second;
}
void RemoveListener(CodeEventListener* listener) {
base::LockGuard<base::Mutex> guard(&mutex_);
listeners_.erase(listener);
}
bool IsListeningToCodeEvents() {
for (auto it : listeners_) {
if (it->is_listening_to_code_events()) {
return true;
}
}
return false;
}
#define CODE_EVENT_DISPATCH(code) \
base::LockGuard<base::Mutex> guard(&mutex_); \
for (auto it = listeners_.begin(); it != listeners_.end(); ++it) (*it)->code
void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
const char* comment) {
CODE_EVENT_DISPATCH(CodeCreateEvent(tag, code, comment));
}
void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code, Name* name) {
CODE_EVENT_DISPATCH(CodeCreateEvent(tag, code, name));
}
void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
SharedFunctionInfo* shared, Name* name) {
CODE_EVENT_DISPATCH(CodeCreateEvent(tag, code, shared, name));
}
void CodeCreateEvent(LogEventsAndTags tag, AbstractCode* code,
SharedFunctionInfo* shared, Name* source, int line,
int column) {
CODE_EVENT_DISPATCH(
CodeCreateEvent(tag, code, shared, source, line, column));
}
void CodeCreateEvent(LogEventsAndTags tag, const wasm::WasmCode* code,
wasm::WasmName name) {
CODE_EVENT_DISPATCH(CodeCreateEvent(tag, code, name));
}
void CallbackEvent(Name* name, Address entry_point) {
CODE_EVENT_DISPATCH(CallbackEvent(name, entry_point));
}
void GetterCallbackEvent(Name* name, Address entry_point) {
CODE_EVENT_DISPATCH(GetterCallbackEvent(name, entry_point));
}
void SetterCallbackEvent(Name* name, Address entry_point) {
CODE_EVENT_DISPATCH(SetterCallbackEvent(name, entry_point));
}
void RegExpCodeCreateEvent(AbstractCode* code, String* source) {
CODE_EVENT_DISPATCH(RegExpCodeCreateEvent(code, source));
}
void CodeMoveEvent(AbstractCode* from, AbstractCode* to) {
CODE_EVENT_DISPATCH(CodeMoveEvent(from, to));
}
void SharedFunctionInfoMoveEvent(Address from, Address to) {
CODE_EVENT_DISPATCH(SharedFunctionInfoMoveEvent(from, to));
}
void CodeMovingGCEvent() { CODE_EVENT_DISPATCH(CodeMovingGCEvent()); }
void CodeDisableOptEvent(AbstractCode* code, SharedFunctionInfo* shared) {
CODE_EVENT_DISPATCH(CodeDisableOptEvent(code, shared));
}
void CodeDeoptEvent(Code* code, DeoptimizeKind kind, Address pc,
int fp_to_sp_delta) {
CODE_EVENT_DISPATCH(CodeDeoptEvent(code, kind, pc, fp_to_sp_delta));
}
#undef CODE_EVENT_DISPATCH
private:
std::unordered_set<CodeEventListener*> listeners_;
base::Mutex mutex_;
DISALLOW_COPY_AND_ASSIGN(CodeEventDispatcher);
};
} // namespace internal
} // namespace v8
#endif // V8_CODE_EVENTS_H_
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