v8/src/gdb-jit.h
fschneider@chromium.org 1f7d42efc9 Landing for pliard@chromium.org: Remove static initializers in v8.
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
2012-03-12 13:56:56 +00:00

145 lines
4.3 KiB
C++

// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_GDB_JIT_H_
#define V8_GDB_JIT_H_
#include "allocation.h"
//
// Basic implementation of GDB JIT Interface client.
// GBD JIT Interface is supported in GDB 7.0 and above.
// Currently on x64 and ia32 architectures and Linux OS are supported.
//
#ifdef ENABLE_GDB_JIT_INTERFACE
#include "v8.h"
#include "factory.h"
namespace v8 {
namespace internal {
class CompilationInfo;
#define CODE_TAGS_LIST(V) \
V(LOAD_IC) \
V(KEYED_LOAD_IC) \
V(STORE_IC) \
V(KEYED_STORE_IC) \
V(CALL_IC) \
V(CALL_INITIALIZE) \
V(CALL_PRE_MONOMORPHIC) \
V(CALL_NORMAL) \
V(CALL_MEGAMORPHIC) \
V(CALL_MISS) \
V(STUB) \
V(BUILTIN) \
V(SCRIPT) \
V(EVAL) \
V(FUNCTION)
class GDBJITLineInfo : public Malloced {
public:
GDBJITLineInfo()
: pc_info_(10) { }
void SetPosition(intptr_t pc, int pos, bool is_statement) {
AddPCInfo(PCInfo(pc, pos, is_statement));
}
struct PCInfo {
PCInfo(intptr_t pc, int pos, bool is_statement)
: pc_(pc), pos_(pos), is_statement_(is_statement) { }
intptr_t pc_;
int pos_;
bool is_statement_;
};
List<PCInfo>* pc_info() {
return &pc_info_;
}
private:
void AddPCInfo(const PCInfo& pc_info) {
pc_info_.Add(pc_info);
}
List<PCInfo> pc_info_;
};
class GDBJITInterface: public AllStatic {
public:
enum CodeTag {
#define V(x) x,
CODE_TAGS_LIST(V)
#undef V
TAG_COUNT
};
static const char* Tag2String(CodeTag tag) {
switch (tag) {
#define V(x) case x: return #x;
CODE_TAGS_LIST(V)
#undef V
default:
return NULL;
}
}
static void AddCode(const char* name,
Code* code,
CodeTag tag,
Script* script,
CompilationInfo* info);
static void AddCode(Handle<String> name,
Handle<Script> script,
Handle<Code> code,
CompilationInfo* info);
static void AddCode(CodeTag tag, String* name, Code* code);
static void AddCode(CodeTag tag, const char* name, Code* code);
static void AddCode(CodeTag tag, Code* code);
static void RemoveCode(Code* code);
static void RegisterDetailedLineInfo(Code* code, GDBJITLineInfo* line_info);
};
#define GDBJIT(action) GDBJITInterface::action
} } // namespace v8::internal
#else
#define GDBJIT(action) ((void) 0)
#endif
#endif