jdk
1/*
2* Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
3* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4*
5* This code is free software; you can redistribute it and/or modify it
6* under the terms of the GNU General Public License version 2 only, as
7* published by the Free Software Foundation.
8*
9* This code is distributed in the hope that it will be useful, but WITHOUT
10* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12* version 2 for more details (a copy is included in the LICENSE file that
13* accompanied this code).
14*
15* You should have received a copy of the GNU General Public License version
16* 2 along with this work; if not, write to the Free Software Foundation,
17* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18*
19* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20* or visit www.oracle.com if you need additional information or have any
21* questions.
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23*/
24
25#include "precompiled.hpp"26#include "asm/codeBuffer.hpp"27#include "code/codeBlob.hpp"28#include "opto/c2_CodeStubs.hpp"29#include "opto/c2_MacroAssembler.hpp"30#include "opto/compile.hpp"31#include "opto/output.hpp"32
33C2CodeStubList::C2CodeStubList() :34_stubs(Compile::current()->comp_arena(), 2, 0, nullptr) {}35
36void C2CodeStubList::emit(C2_MacroAssembler& masm) {37for (int i = _stubs.length() - 1; i >= 0; i--) {38C2CodeStub* stub = _stubs.at(i);39int max_size = stub->max_size();40// Make sure there is enough space in the code buffer41if (masm.code()->insts()->maybe_expand_to_ensure_remaining(max_size) && masm.code()->blob() == nullptr) {42ciEnv::current()->record_failure("CodeCache is full");43return;44}45
46DEBUG_ONLY(int size_before = masm.offset();)47
48stub->emit(masm);49
50DEBUG_ONLY(int actual_size = masm.offset() - size_before;)51assert(max_size >= actual_size, "Expected stub size (%d) must be larger than or equal to actual stub size (%d)", max_size, actual_size);52}53}
54
55// move here to avoid circular dependency between c2_CodeStubs.hpp and output.hpp
56void C2CodeStub::add_to_stub_list() {57if (!Compile::current()->output()->in_scratch_emit_size()) {58Compile::current()->output()->add_stub(this);59}60}
61