提交 77c96c30 编写于 作者: A asaha

Merge

......@@ -1137,6 +1137,7 @@ bf2e8b1e8e8e6bc1f9b9475de54ba0329a6b24b1 jdk8u162-b34
9b3f207379cf6ecfb8603640269e31ff4e064294 jdk8u162-b35
d2ebd6530396b0afc700cd1a8eaf1f7a7f9fce8d jdk8u162-b36
700ad8745f3fdc5ba3702616fc5ed6a6248dfa78 jdk8u162-b37
405800ccc4c7b81475b01392f2145cc3675d1f86 jdk8u162-b38
a17bab9405474602b18cd62e060a09b17d6413ac jdk8u171-b00
ebfd57cc21e6b7f0c22b17c666b6b28c9340e207 jdk8u171-b01
1acd7c1b80241def8fac90f70b0df16356adad47 jdk8u171-b02
......
/*
* Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -289,6 +289,28 @@ AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
return blob;
}
VtableBlob::VtableBlob(const char* name, int size) :
BufferBlob(name, size) {
}
VtableBlob* VtableBlob::create(const char* name, int buffer_size) {
ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
VtableBlob* blob = NULL;
unsigned int size = sizeof(VtableBlob);
// align the size to CodeEntryAlignment
size = align_code_offset(size);
size += round_to(buffer_size, oopSize);
assert(name != NULL, "must provide a name");
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
blob = new (size) VtableBlob(name, size);
}
// Track memory usage statistic after releasing CodeCache_lock
MemoryService::track_code_cache_memory_usage();
return blob;
}
//----------------------------------------------------------------------------------------------------
// Implementation of MethodHandlesAdapterBlob
......
/*
* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -101,6 +101,7 @@ class CodeBlob VALUE_OBJ_CLASS_SPEC {
virtual bool is_exception_stub() const { return false; }
virtual bool is_safepoint_stub() const { return false; }
virtual bool is_adapter_blob() const { return false; }
virtual bool is_vtable_blob() const { return false; }
virtual bool is_method_handles_adapter_blob() const { return false; }
virtual bool is_compiled_by_c2() const { return false; }
......@@ -202,6 +203,7 @@ class CodeBlob VALUE_OBJ_CLASS_SPEC {
class BufferBlob: public CodeBlob {
friend class VMStructs;
friend class AdapterBlob;
friend class VtableBlob;
friend class MethodHandlesAdapterBlob;
private:
......@@ -246,6 +248,18 @@ public:
virtual bool is_adapter_blob() const { return true; }
};
//---------------------------------------------------------------------------------------------------
class VtableBlob: public BufferBlob {
private:
VtableBlob(const char*, int);
public:
// Creation
static VtableBlob* create(const char* name, int buffer_size);
// Typing
virtual bool is_vtable_blob() const { return true; }
};
//----------------------------------------------------------------------------------------------------
// MethodHandlesAdapterBlob: used to hold MethodHandles adapters
......
/*
* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -232,7 +232,7 @@ bool CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecod
assert(k->verify_itable_index(itable_index), "sanity check");
#endif //ASSERT
CompiledICHolder* holder = new CompiledICHolder(call_info->resolved_method()->method_holder(),
call_info->resolved_klass()());
call_info->resolved_klass()(), false);
holder->claim();
InlineCacheBuffer::create_transition_stub(this, holder, entry);
} else {
......@@ -270,7 +270,7 @@ bool CompiledIC::is_megamorphic() const {
assert(!is_optimized(), "an optimized call cannot be megamorphic");
// Cannot rely on cached_value. It is either an interface or a method.
return VtableStubs::is_entry_point(ic_destination());
return VtableStubs::entry_point(ic_destination()) != NULL;
}
bool CompiledIC::is_call_to_compiled() const {
......@@ -534,9 +534,11 @@ bool CompiledIC::is_icholder_entry(address entry) {
return true;
}
// itable stubs also use CompiledICHolder
if (VtableStubs::is_entry_point(entry) && VtableStubs::stub_containing(entry)->is_itable_stub()) {
return true;
if (cb != NULL && cb->is_vtable_blob()) {
VtableStub* s = VtableStubs::entry_point(entry);
return (s != NULL) && s->is_itable_stub();
}
return false;
}
......
/*
* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -60,7 +60,7 @@ void* VtableStub::operator new(size_t size, int code_size) throw() {
// There is a dependency on the name of the blob in src/share/vm/prims/jvmtiCodeBlobEvents.cpp
// If changing the name, update the other file accordingly.
BufferBlob* blob = BufferBlob::create("vtable chunks", bytes);
VtableBlob* blob = VtableBlob::create("vtable chunks", bytes);
if (blob == NULL) {
return NULL;
}
......@@ -167,17 +167,18 @@ void VtableStubs::enter(bool is_vtable_stub, int vtable_index, VtableStub* s) {
_number_of_vtable_stubs++;
}
bool VtableStubs::is_entry_point(address pc) {
VtableStub* VtableStubs::entry_point(address pc) {
MutexLocker ml(VtableStubs_lock);
VtableStub* stub = (VtableStub*)(pc - VtableStub::entry_offset());
uint hash = VtableStubs::hash(stub->is_vtable_stub(), stub->index());
VtableStub* s;
for (s = _table[hash]; s != NULL && s != stub; s = s->next()) {}
return s == stub;
if (s == stub) {
return s;
}
return NULL;
}
bool VtableStubs::contains(address pc) {
// simple solution for now - we may want to use
// a faster way if this function is called often
......
/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -126,7 +126,7 @@ class VtableStubs : AllStatic {
public:
static address find_vtable_stub(int vtable_index) { return find_stub(true, vtable_index); }
static address find_itable_stub(int itable_index) { return find_stub(false, itable_index); }
static bool is_entry_point(address pc); // is pc a vtable stub entry point?
static VtableStub* entry_point(address pc); // vtable stub entry point for a pc
static bool contains(address pc); // is pc within any stub?
static VtableStub* stub_containing(address pc); // stub containing pc or NULL
static int number_of_vtable_stubs() { return _number_of_vtable_stubs; }
......
/*
* Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -24,30 +24,12 @@
#include "precompiled.hpp"
#include "oops/compiledICHolder.hpp"
#include "oops/klass.hpp"
#include "oops/method.hpp"
#include "oops/oop.inline2.hpp"
volatile int CompiledICHolder::_live_count;
volatile int CompiledICHolder::_live_not_claimed_count;
bool CompiledICHolder::is_loader_alive(BoolObjectClosure* is_alive) {
if (_holder_metadata->is_method()) {
if (!((Method*)_holder_metadata)->method_holder()->is_loader_alive(is_alive)) {
return false;
}
} else if (_holder_metadata->is_klass()) {
if (!((Klass*)_holder_metadata)->is_loader_alive(is_alive)) {
return false;
}
}
if (!_holder_klass->is_loader_alive(is_alive)) {
return false;
}
return true;
}
// Printing
void CompiledICHolder::print_on(outputStream* st) const {
......
/*
* Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -26,6 +26,8 @@
#define SHARE_VM_OOPS_COMPILEDICHOLDEROOP_HPP
#include "oops/oop.hpp"
#include "oops/klass.hpp"
#include "oops/method.hpp"
// A CompiledICHolder* is a helper object for the inline cache implementation.
// It holds:
......@@ -48,11 +50,12 @@ class CompiledICHolder : public CHeapObj<mtCompiler> {
Metadata* _holder_metadata;
Klass* _holder_klass; // to avoid name conflict with oopDesc::_klass
CompiledICHolder* _next;
bool _is_metadata_method;
public:
// Constructor
CompiledICHolder(Metadata* metadata, Klass* klass)
: _holder_metadata(metadata), _holder_klass(klass) {
CompiledICHolder(Metadata* metadata, Klass* klass, bool is_method = true)
: _holder_metadata(metadata), _holder_klass(klass), _is_metadata_method(is_method) {
#ifdef ASSERT
Atomic::inc(&_live_count);
Atomic::inc(&_live_not_claimed_count);
......@@ -82,7 +85,16 @@ class CompiledICHolder : public CHeapObj<mtCompiler> {
CompiledICHolder* next() { return _next; }
void set_next(CompiledICHolder* n) { _next = n; }
bool is_loader_alive(BoolObjectClosure* is_alive);
inline bool is_loader_alive(BoolObjectClosure* is_alive) {
Klass* k = _is_metadata_method ? ((Method*)_holder_metadata)->method_holder() : (Klass*)_holder_metadata;
if (!k->is_loader_alive(is_alive)) {
return false;
}
if (!_holder_klass->is_loader_alive(is_alive)) {
return false;
}
return true;
}
// Verify
void verify_on(outputStream* st);
......
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