512 lines
19 KiB
C++
512 lines
19 KiB
C++
|
/*
|
||
|
|
* Copyright 1998-2007 Sun Microsystems, Inc. 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
|
||
|
|
* under the terms of the GNU General Public License version 2 only, as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
||
|
|
* accompanied this code).
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License version
|
||
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
||
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*
|
||
|
|
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||
|
|
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||
|
|
* have any questions.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
// CodeBlob - superclass for all entries in the CodeCache.
|
||
|
|
//
|
||
|
|
// Suptypes are:
|
||
|
|
// nmethod : Compiled Java methods (include method that calls to native code)
|
||
|
|
// RuntimeStub : Call to VM runtime methods
|
||
|
|
// DeoptimizationBlob : Used for deoptimizatation
|
||
|
|
// ExceptionBlob : Used for stack unrolling
|
||
|
|
// SafepointBlob : Used to handle illegal instruction exceptions
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Layout:
|
||
|
|
// - header
|
||
|
|
// - relocation
|
||
|
|
// - instruction space
|
||
|
|
// - data space
|
||
|
|
class DeoptimizationBlob;
|
||
|
|
|
||
|
|
class CodeBlob VALUE_OBJ_CLASS_SPEC {
|
||
|
|
|
||
|
|
friend class VMStructs;
|
||
|
|
|
||
|
|
private:
|
||
|
|
const char* _name;
|
||
|
|
int _size; // total size of CodeBlob in bytes
|
||
|
|
int _header_size; // size of header (depends on subclass)
|
||
|
|
int _relocation_size; // size of relocation
|
||
|
|
int _instructions_offset; // offset to where instructions region begins
|
||
|
|
int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have
|
||
|
|
// not finished setting up their frame. Beware of pc's in
|
||
|
|
// that range. There is a similar range(s) on returns
|
||
|
|
// which we don't detect.
|
||
|
|
int _data_offset; // offset to where data region begins
|
||
|
|
int _oops_offset; // offset to where embedded oop table begins (inside data)
|
||
|
|
int _oops_length; // number of embedded oops
|
||
|
|
int _frame_size; // size of stack frame
|
||
|
|
OopMapSet* _oop_maps; // OopMap for this CodeBlob
|
||
|
|
CodeComments _comments;
|
||
|
|
|
||
|
|
friend class OopRecorder;
|
||
|
|
|
||
|
|
void fix_oop_relocations(address begin, address end, bool initialize_immediates);
|
||
|
|
inline void initialize_immediate_oop(oop* dest, jobject handle);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Returns the space needed for CodeBlob
|
||
|
|
static unsigned int allocation_size(CodeBuffer* cb, int header_size);
|
||
|
|
|
||
|
|
// Creation
|
||
|
|
// a) simple CodeBlob
|
||
|
|
// frame_complete is the offset from the beginning of the instructions
|
||
|
|
// to where the frame setup (from stackwalk viewpoint) is complete.
|
||
|
|
CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size);
|
||
|
|
|
||
|
|
// b) full CodeBlob
|
||
|
|
CodeBlob(
|
||
|
|
const char* name,
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int header_size,
|
||
|
|
int size,
|
||
|
|
int frame_complete,
|
||
|
|
int frame_size,
|
||
|
|
OopMapSet* oop_maps
|
||
|
|
);
|
||
|
|
|
||
|
|
// Deletion
|
||
|
|
void flush();
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
virtual bool is_buffer_blob() const { return false; }
|
||
|
|
virtual bool is_nmethod() const { return false; }
|
||
|
|
virtual bool is_runtime_stub() const { return false; }
|
||
|
|
virtual bool is_deoptimization_stub() const { return false; }
|
||
|
|
virtual bool is_uncommon_trap_stub() const { return false; }
|
||
|
|
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_compiled_by_c2() const { return false; }
|
||
|
|
virtual bool is_compiled_by_c1() const { return false; }
|
||
|
|
|
||
|
|
// Boundaries
|
||
|
|
address header_begin() const { return (address) this; }
|
||
|
|
address header_end() const { return ((address) this) + _header_size; };
|
||
|
|
relocInfo* relocation_begin() const { return (relocInfo*) header_end(); };
|
||
|
|
relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); }
|
||
|
|
address instructions_begin() const { return (address) header_begin() + _instructions_offset; }
|
||
|
|
address instructions_end() const { return (address) header_begin() + _data_offset; }
|
||
|
|
address data_begin() const { return (address) header_begin() + _data_offset; }
|
||
|
|
address data_end() const { return (address) header_begin() + _size; }
|
||
|
|
oop* oops_begin() const { return (oop*) (header_begin() + _oops_offset); }
|
||
|
|
oop* oops_end() const { return oops_begin() + _oops_length; }
|
||
|
|
|
||
|
|
// Offsets
|
||
|
|
int relocation_offset() const { return _header_size; }
|
||
|
|
int instructions_offset() const { return _instructions_offset; }
|
||
|
|
int data_offset() const { return _data_offset; }
|
||
|
|
int oops_offset() const { return _oops_offset; }
|
||
|
|
|
||
|
|
// Sizes
|
||
|
|
int size() const { return _size; }
|
||
|
|
int header_size() const { return _header_size; }
|
||
|
|
int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); }
|
||
|
|
int instructions_size() const { return instructions_end() - instructions_begin(); }
|
||
|
|
int data_size() const { return data_end() - data_begin(); }
|
||
|
|
int oops_size() const { return (address) oops_end() - (address) oops_begin(); }
|
||
|
|
|
||
|
|
// Containment
|
||
|
|
bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); }
|
||
|
|
bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); }
|
||
|
|
bool instructions_contains(address addr) const { return instructions_begin() <= addr && addr < instructions_end(); }
|
||
|
|
bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); }
|
||
|
|
bool oops_contains(oop* addr) const { return oops_begin() <= addr && addr < oops_end(); }
|
||
|
|
bool contains(address addr) const { return instructions_contains(addr); }
|
||
|
|
bool is_frame_complete_at(address addr) const { return instructions_contains(addr) &&
|
||
|
|
addr >= instructions_begin() + _frame_complete_offset; }
|
||
|
|
|
||
|
|
// Relocation support
|
||
|
|
void fix_oop_relocations(address begin, address end) {
|
||
|
|
fix_oop_relocations(begin, end, false);
|
||
|
|
}
|
||
|
|
void fix_oop_relocations() {
|
||
|
|
fix_oop_relocations(NULL, NULL, false);
|
||
|
|
}
|
||
|
|
relocInfo::relocType reloc_type_for_address(address pc);
|
||
|
|
bool is_at_poll_return(address pc);
|
||
|
|
bool is_at_poll_or_poll_return(address pc);
|
||
|
|
|
||
|
|
// Support for oops in scopes and relocs:
|
||
|
|
// Note: index 0 is reserved for null.
|
||
|
|
oop oop_at(int index) const { return index == 0? (oop)NULL: *oop_addr_at(index); }
|
||
|
|
oop* oop_addr_at(int index) const{ // for GC
|
||
|
|
// relocation indexes are biased by 1 (because 0 is reserved)
|
||
|
|
assert(index > 0 && index <= _oops_length, "must be a valid non-zero index");
|
||
|
|
return &oops_begin()[index-1];
|
||
|
|
}
|
||
|
|
|
||
|
|
void copy_oops(GrowableArray<jobject>* oops);
|
||
|
|
|
||
|
|
// CodeCache support: really only used by the nmethods, but in order to get
|
||
|
|
// asserts and certain bookkeeping to work in the CodeCache they are defined
|
||
|
|
// virtual here.
|
||
|
|
virtual bool is_zombie() const { return false; }
|
||
|
|
virtual bool is_locked_by_vm() const { return false; }
|
||
|
|
|
||
|
|
virtual bool is_unloaded() const { return false; }
|
||
|
|
virtual bool is_not_entrant() const { return false; }
|
||
|
|
|
||
|
|
// GC support
|
||
|
|
virtual bool is_alive() const = 0;
|
||
|
|
virtual void do_unloading(BoolObjectClosure* is_alive,
|
||
|
|
OopClosure* keep_alive,
|
||
|
|
bool unloading_occurred);
|
||
|
|
virtual void oops_do(OopClosure* f) = 0;
|
||
|
|
|
||
|
|
// OopMap for frame
|
||
|
|
OopMapSet* oop_maps() const { return _oop_maps; }
|
||
|
|
void set_oop_maps(OopMapSet* p);
|
||
|
|
OopMap* oop_map_for_return_address(address return_address);
|
||
|
|
virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); }
|
||
|
|
|
||
|
|
// Frame support
|
||
|
|
int frame_size() const { return _frame_size; }
|
||
|
|
void set_frame_size(int size) { _frame_size = size; }
|
||
|
|
|
||
|
|
// Returns true, if the next frame is responsible for GC'ing oops passed as arguments
|
||
|
|
virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; }
|
||
|
|
|
||
|
|
// Naming
|
||
|
|
const char* name() const { return _name; }
|
||
|
|
void set_name(const char* name) { _name = name; }
|
||
|
|
|
||
|
|
// Debugging
|
||
|
|
virtual void verify();
|
||
|
|
virtual void print() const PRODUCT_RETURN;
|
||
|
|
virtual void print_value_on(outputStream* st) const PRODUCT_RETURN;
|
||
|
|
|
||
|
|
// Print the comment associated with offset on stream, if there is one
|
||
|
|
void print_block_comment(outputStream* stream, intptr_t offset) {
|
||
|
|
_comments.print_block_comment(stream, offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Transfer ownership of comments to this CodeBlob
|
||
|
|
void set_comments(CodeComments& comments) {
|
||
|
|
_comments.assign(comments);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc.
|
||
|
|
|
||
|
|
class BufferBlob: public CodeBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
// Creation support
|
||
|
|
BufferBlob(const char* name, int size);
|
||
|
|
BufferBlob(const char* name, int size, CodeBuffer* cb);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static BufferBlob* create(const char* name, int buffer_size);
|
||
|
|
static BufferBlob* create(const char* name, CodeBuffer* cb);
|
||
|
|
|
||
|
|
static void free(BufferBlob* buf);
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_buffer_blob() const { return true; }
|
||
|
|
bool is_adapter_blob() const;
|
||
|
|
|
||
|
|
// GC/Verification support
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ }
|
||
|
|
bool is_alive() const { return true; }
|
||
|
|
void do_unloading(BoolObjectClosure* is_alive,
|
||
|
|
OopClosure* keep_alive,
|
||
|
|
bool unloading_occurred) { /* do nothing */ }
|
||
|
|
|
||
|
|
void oops_do(OopClosure* f) { /* do nothing*/ }
|
||
|
|
|
||
|
|
void verify();
|
||
|
|
void print() const PRODUCT_RETURN;
|
||
|
|
void print_value_on(outputStream* st) const PRODUCT_RETURN;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine
|
||
|
|
|
||
|
|
class RuntimeStub: public CodeBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
bool _caller_must_gc_arguments;
|
||
|
|
|
||
|
|
// Creation support
|
||
|
|
RuntimeStub(
|
||
|
|
const char* name,
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int size,
|
||
|
|
int frame_complete,
|
||
|
|
int frame_size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
bool caller_must_gc_arguments
|
||
|
|
);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static RuntimeStub* new_runtime_stub(
|
||
|
|
const char* stub_name,
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int frame_complete,
|
||
|
|
int frame_size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
bool caller_must_gc_arguments
|
||
|
|
);
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_runtime_stub() const { return true; }
|
||
|
|
|
||
|
|
// GC support
|
||
|
|
bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; }
|
||
|
|
|
||
|
|
address entry_point() { return instructions_begin(); }
|
||
|
|
|
||
|
|
// GC/Verification support
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ }
|
||
|
|
bool is_alive() const { return true; }
|
||
|
|
void do_unloading(BoolObjectClosure* is_alive,
|
||
|
|
OopClosure* keep_alive,
|
||
|
|
bool unloading_occurred) { /* do nothing */ }
|
||
|
|
void oops_do(OopClosure* f) { /* do-nothing*/ }
|
||
|
|
|
||
|
|
void verify();
|
||
|
|
void print() const PRODUCT_RETURN;
|
||
|
|
void print_value_on(outputStream* st) const PRODUCT_RETURN;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// Super-class for all blobs that exist in only one instance. Implements default behaviour.
|
||
|
|
|
||
|
|
class SingletonBlob: public CodeBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
public:
|
||
|
|
SingletonBlob(
|
||
|
|
const char* name,
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int header_size,
|
||
|
|
int size,
|
||
|
|
int frame_size,
|
||
|
|
OopMapSet* oop_maps
|
||
|
|
)
|
||
|
|
: CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps)
|
||
|
|
{};
|
||
|
|
|
||
|
|
bool is_alive() const { return true; }
|
||
|
|
void do_unloading(BoolObjectClosure* is_alive,
|
||
|
|
OopClosure* keep_alive,
|
||
|
|
bool unloading_occurred) { /* do-nothing*/ }
|
||
|
|
|
||
|
|
void verify(); // does nothing
|
||
|
|
void print() const PRODUCT_RETURN;
|
||
|
|
void print_value_on(outputStream* st) const PRODUCT_RETURN;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// DeoptimizationBlob
|
||
|
|
|
||
|
|
class DeoptimizationBlob: public SingletonBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
int _unpack_offset;
|
||
|
|
int _unpack_with_exception;
|
||
|
|
int _unpack_with_reexecution;
|
||
|
|
|
||
|
|
int _unpack_with_exception_in_tls;
|
||
|
|
|
||
|
|
// Creation support
|
||
|
|
DeoptimizationBlob(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int unpack_offset,
|
||
|
|
int unpack_with_exception_offset,
|
||
|
|
int unpack_with_reexecution_offset,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static DeoptimizationBlob* create(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int unpack_offset,
|
||
|
|
int unpack_with_exception_offset,
|
||
|
|
int unpack_with_reexecution_offset,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_deoptimization_stub() const { return true; }
|
||
|
|
const DeoptimizationBlob *as_deoptimization_stub() const { return this; }
|
||
|
|
bool exception_address_is_unpack_entry(address pc) const {
|
||
|
|
address unpack_pc = unpack();
|
||
|
|
return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// GC for args
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ }
|
||
|
|
|
||
|
|
// Iteration
|
||
|
|
void oops_do(OopClosure* f) {}
|
||
|
|
|
||
|
|
// Printing
|
||
|
|
void print_value_on(outputStream* st) const PRODUCT_RETURN;
|
||
|
|
|
||
|
|
address unpack() const { return instructions_begin() + _unpack_offset; }
|
||
|
|
address unpack_with_exception() const { return instructions_begin() + _unpack_with_exception; }
|
||
|
|
address unpack_with_reexecution() const { return instructions_begin() + _unpack_with_reexecution; }
|
||
|
|
|
||
|
|
// Alternate entry point for C1 where the exception and issuing pc
|
||
|
|
// are in JavaThread::_exception_oop and JavaThread::_exception_pc
|
||
|
|
// instead of being in registers. This is needed because C1 doesn't
|
||
|
|
// model exception paths in a way that keeps these registers free so
|
||
|
|
// there may be live values in those registers during deopt.
|
||
|
|
void set_unpack_with_exception_in_tls_offset(int offset) {
|
||
|
|
_unpack_with_exception_in_tls = offset;
|
||
|
|
assert(contains(instructions_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob");
|
||
|
|
}
|
||
|
|
address unpack_with_exception_in_tls() const { return instructions_begin() + _unpack_with_exception_in_tls; }
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// UncommonTrapBlob (currently only used by Compiler 2)
|
||
|
|
|
||
|
|
#ifdef COMPILER2
|
||
|
|
|
||
|
|
class UncommonTrapBlob: public SingletonBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
// Creation support
|
||
|
|
UncommonTrapBlob(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static UncommonTrapBlob* create(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
// GC for args
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ }
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_uncommon_trap_stub() const { return true; }
|
||
|
|
|
||
|
|
// Iteration
|
||
|
|
void oops_do(OopClosure* f) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2)
|
||
|
|
|
||
|
|
class ExceptionBlob: public SingletonBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
// Creation support
|
||
|
|
ExceptionBlob(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static ExceptionBlob* create(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
// GC for args
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ }
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_exception_stub() const { return true; }
|
||
|
|
|
||
|
|
// Iteration
|
||
|
|
void oops_do(OopClosure* f) {}
|
||
|
|
};
|
||
|
|
#endif // COMPILER2
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------------------------------
|
||
|
|
// SafepointBlob: handles illegal_instruction exceptions during a safepoint
|
||
|
|
|
||
|
|
class SafepointBlob: public SingletonBlob {
|
||
|
|
friend class VMStructs;
|
||
|
|
private:
|
||
|
|
// Creation support
|
||
|
|
SafepointBlob(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
int size,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
void* operator new(size_t s, unsigned size);
|
||
|
|
|
||
|
|
public:
|
||
|
|
// Creation
|
||
|
|
static SafepointBlob* create(
|
||
|
|
CodeBuffer* cb,
|
||
|
|
OopMapSet* oop_maps,
|
||
|
|
int frame_size
|
||
|
|
);
|
||
|
|
|
||
|
|
// GC for args
|
||
|
|
void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ }
|
||
|
|
|
||
|
|
// Typing
|
||
|
|
bool is_safepoint_stub() const { return true; }
|
||
|
|
|
||
|
|
// Iteration
|
||
|
|
void oops_do(OopClosure* f) {}
|
||
|
|
};
|