2ff8870b6f
Re-commit the change after fixing a lot of race condition in LLDB exposed by this change Loading the debug info from a large application is the slowest task LLDB do. This CL makes most of the dwarf parsing code multi-threaded. As a result the speed of "attach; backtrace; exit;" when the inferior is an LLDB with full debug info increased by a factor of 2. Differential revision: http://reviews.llvm.org/D13662 llvm-svn: 251106
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
//===-- NameToDIE.cpp -------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "NameToDIE.h"
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/RegularExpression.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "DWARFCompileUnit.h"
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#include "DWARFDebugInfo.h"
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#include "DWARFDebugInfoEntry.h"
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#include "SymbolFileDWARF.h"
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using namespace lldb;
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using namespace lldb_private;
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void
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NameToDIE::Finalize()
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{
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m_map.Sort ();
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m_map.SizeToFit ();
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}
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void
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NameToDIE::Insert (const ConstString& name, const DIERef& die_ref)
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{
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m_map.Append(name.GetCString(), die_ref);
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}
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size_t
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NameToDIE::Find (const ConstString &name, DIEArray &info_array) const
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{
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return m_map.GetValues (name.GetCString(), info_array);
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}
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size_t
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NameToDIE::Find (const RegularExpression& regex, DIEArray &info_array) const
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{
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return m_map.GetValues (regex, info_array);
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}
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size_t
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NameToDIE::FindAllEntriesForCompileUnit (dw_offset_t cu_offset, DIEArray &info_array) const
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{
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const size_t initial_size = info_array.size();
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const uint32_t size = m_map.GetSize();
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for (uint32_t i=0; i<size; ++i)
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{
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const DIERef& die_ref = m_map.GetValueAtIndexUnchecked(i);
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if (cu_offset == die_ref.cu_offset)
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info_array.push_back (die_ref);
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}
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return info_array.size() - initial_size;
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}
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void
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NameToDIE::Dump (Stream *s)
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{
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const uint32_t size = m_map.GetSize();
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for (uint32_t i=0; i<size; ++i)
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{
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const char *cstr = m_map.GetCStringAtIndex(i);
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const DIERef& die_ref = m_map.GetValueAtIndexUnchecked(i);
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s->Printf("%p: {0x%8.8x/0x%8.8x} \"%s\"\n", cstr, die_ref.cu_offset, die_ref.die_offset, cstr);
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}
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}
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void
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NameToDIE::ForEach (std::function <bool(const char *name, const DIERef& die_ref)> const &callback) const
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{
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const uint32_t size = m_map.GetSize();
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for (uint32_t i=0; i<size; ++i)
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{
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if (!callback(m_map.GetCStringAtIndexUnchecked(i), m_map.GetValueAtIndexUnchecked (i)))
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break;
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}
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}
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void
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NameToDIE::Append (const NameToDIE& other)
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{
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const uint32_t size = other.m_map.GetSize();
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for (uint32_t i = 0; i < size; ++i)
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{
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m_map.Append(other.m_map.GetCStringAtIndexUnchecked (i),
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other.m_map.GetValueAtIndexUnchecked (i));
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}
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}
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