Pavel Labath 257ff33989 DebugNamesDWARFIndex: Implement GetFunctions method
Summary:
This patch implements the non-regex variant of GetFunctions. To share
more code with the Apple implementation, I've extracted the common
filtering code from that class into a utility function on the DWARFIndex
base class.

The new implementation also searching the accelerator table multiple
times -- previously it could happen that the apple table would return
the same die more than once if one specified multiple search flags in
name_type_mask. This way, I separate table iteration from filtering, and
so we can be sure each die is inserted at most once.

Reviewers: clayborg, JDevlieghere

Subscribers: aprantl, lldb-commits

Differential Revision: https://reviews.llvm.org/D47881

llvm-svn: 334273
2018-06-08 09:10:31 +00:00

59 lines
2.0 KiB
C++

//===-- DIERef.h ------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef SymbolFileDWARF_DIERef_h_
#define SymbolFileDWARF_DIERef_h_
#include "lldb/Core/dwarf.h"
#include "lldb/lldb-defines.h"
class DWARFFormValue;
class SymbolFileDWARF;
struct DIERef {
DIERef() = default;
DIERef(dw_offset_t c, dw_offset_t d) : cu_offset(c), die_offset(d) {}
//----------------------------------------------------------------------
// In order to properly decode a lldb::user_id_t back into a DIERef we
// need the DWARF file since it knows if DWARF in .o files is being used
// (MacOSX) or if DWO files are being used. The encoding of the user ID
// differs between the two types of DWARF.
//----------------------------------------------------------------------
explicit DIERef(lldb::user_id_t uid, SymbolFileDWARF *dwarf);
explicit DIERef(const DWARFFormValue &form_value);
//----------------------------------------------------------------------
// In order to properly encode a DIERef unto a lldb::user_id_t we need
// the DWARF file since it knows if DWARF in .o files is being used
// (MacOSX) or if DWO files are being used. The encoding of the user ID
// differs between the two types of DWARF.
//----------------------------------------------------------------------
lldb::user_id_t GetUID(SymbolFileDWARF *dwarf) const;
bool operator<(const DIERef &ref) const {
return die_offset < ref.die_offset;
}
bool operator<(const DIERef &ref) { return die_offset < ref.die_offset; }
explicit operator bool() const {
return cu_offset != DW_INVALID_OFFSET || die_offset != DW_INVALID_OFFSET;
}
dw_offset_t cu_offset = DW_INVALID_OFFSET;
dw_offset_t die_offset = DW_INVALID_OFFSET;
};
typedef std::vector<DIERef> DIEArray;
#endif // SymbolFileDWARF_DIERef_h_