1f7d42efc9
This change includes two CLs by pliard@chromium.org: 1. http://codereview.chromium.org/9447052/ (Add CallOnce() and simple LazyInstance implementation): Note that this implementation of LazyInstance does not handle global destructors (i.e. the lazy instances are never deleted). This CL was initially reviewed on codereview.appspot.com: http://codereview.appspot.com/5687064/ 2. http://codereview.chromium.org/9455088/ (Remove static initializers in v8): This CL depends on CL 9447052 (adding CallOnce and LazyInstance). It is based on a patch sent by Digit. With this patch applied, we have only one static initializer left (in atomicops_internals_x86_gcc.cc). This static initializer populates a structure used by x86 atomic operations. It seems that we can hardly remove it. If possible, it will be removed in a next CL. This CL also modifies the presubmit script to check the number of static initializers. BUG=v8:1859 Review URL: https://chromiumcodereview.appspot.com/9666052 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11010 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
145 lines
4.3 KiB
C++
145 lines
4.3 KiB
C++
// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_GDB_JIT_H_
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#define V8_GDB_JIT_H_
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#include "allocation.h"
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//
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// Basic implementation of GDB JIT Interface client.
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// GBD JIT Interface is supported in GDB 7.0 and above.
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// Currently on x64 and ia32 architectures and Linux OS are supported.
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//
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#ifdef ENABLE_GDB_JIT_INTERFACE
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#include "v8.h"
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#include "factory.h"
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namespace v8 {
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namespace internal {
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class CompilationInfo;
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#define CODE_TAGS_LIST(V) \
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V(LOAD_IC) \
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V(KEYED_LOAD_IC) \
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V(STORE_IC) \
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V(KEYED_STORE_IC) \
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V(CALL_IC) \
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V(CALL_INITIALIZE) \
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V(CALL_PRE_MONOMORPHIC) \
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V(CALL_NORMAL) \
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V(CALL_MEGAMORPHIC) \
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V(CALL_MISS) \
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V(STUB) \
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V(BUILTIN) \
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V(SCRIPT) \
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V(EVAL) \
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V(FUNCTION)
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class GDBJITLineInfo : public Malloced {
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public:
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GDBJITLineInfo()
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: pc_info_(10) { }
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void SetPosition(intptr_t pc, int pos, bool is_statement) {
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AddPCInfo(PCInfo(pc, pos, is_statement));
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}
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struct PCInfo {
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PCInfo(intptr_t pc, int pos, bool is_statement)
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: pc_(pc), pos_(pos), is_statement_(is_statement) { }
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intptr_t pc_;
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int pos_;
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bool is_statement_;
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};
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List<PCInfo>* pc_info() {
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return &pc_info_;
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}
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private:
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void AddPCInfo(const PCInfo& pc_info) {
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pc_info_.Add(pc_info);
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}
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List<PCInfo> pc_info_;
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};
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class GDBJITInterface: public AllStatic {
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public:
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enum CodeTag {
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#define V(x) x,
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CODE_TAGS_LIST(V)
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#undef V
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TAG_COUNT
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};
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static const char* Tag2String(CodeTag tag) {
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switch (tag) {
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#define V(x) case x: return #x;
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CODE_TAGS_LIST(V)
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#undef V
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default:
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return NULL;
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}
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}
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static void AddCode(const char* name,
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Code* code,
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CodeTag tag,
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Script* script,
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CompilationInfo* info);
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static void AddCode(Handle<String> name,
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Handle<Script> script,
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Handle<Code> code,
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CompilationInfo* info);
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static void AddCode(CodeTag tag, String* name, Code* code);
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static void AddCode(CodeTag tag, const char* name, Code* code);
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static void AddCode(CodeTag tag, Code* code);
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static void RemoveCode(Code* code);
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static void RegisterDetailedLineInfo(Code* code, GDBJITLineInfo* line_info);
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};
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#define GDBJIT(action) GDBJITInterface::action
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} } // namespace v8::internal
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#else
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#define GDBJIT(action) ((void) 0)
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#endif
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#endif
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