<div dir="ltr">We might, but at the moment we generally don't copy DWARFContexts around (and for now I don't see use cases where it would be convenient).</div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Thu, Mar 13, 2014 at 7:44 PM, David Blaikie <span dir="ltr"><<a href="mailto:dblaikie@gmail.com" target="_blank">dblaikie@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">On Thu, Mar 13, 2014 at 1:20 AM, Alexey Samsonov <<a href="mailto:samsonov@google.com">samsonov@google.com</a>> wrote:<br>
> Author: samsonov<br>
> Date: Thu Mar 13 03:19:59 2014<br>
> New Revision: 203770<br>
><br>
> URL: <a href="http://llvm.org/viewvc/llvm-project?rev=203770&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=203770&view=rev</a><br>
> Log:<br>
> [C++11] DWARF parser: use SmallVector<std::unique_ptr> for parsed units in DWARFContext, and delete custom destructors<br>
<br>
</div>Nice - we might be able to make them value objects (not sure if they<br>
need move-only semantics, but that'd be an option) too (either now or<br>
later).<br>
<div class="HOEnZb"><div class="h5"><br>
><br>
> Modified:<br>
> llvm/trunk/lib/DebugInfo/DWARFContext.cpp<br>
> llvm/trunk/lib/DebugInfo/DWARFContext.h<br>
><br>
> Modified: llvm/trunk/lib/DebugInfo/DWARFContext.cpp<br>
> URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARFContext.cpp?rev=203770&r1=203769&r2=203770&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARFContext.cpp?rev=203770&r1=203769&r2=203770&view=diff</a><br>
> ==============================================================================<br>
> --- llvm/trunk/lib/DebugInfo/DWARFContext.cpp (original)<br>
> +++ llvm/trunk/lib/DebugInfo/DWARFContext.cpp Thu Mar 13 03:19:59 2014<br>
> @@ -8,7 +8,6 @@<br>
> //===----------------------------------------------------------------------===//<br>
><br>
> #include "DWARFContext.h"<br>
> -#include "llvm/ADT/STLExtras.h"<br>
> #include "llvm/ADT/SmallString.h"<br>
> #include "llvm/ADT/StringSwitch.h"<br>
> #include "llvm/Support/Compression.h"<br>
> @@ -23,13 +22,6 @@ using namespace object;<br>
><br>
> typedef DWARFDebugLine::LineTable DWARFLineTable;<br>
><br>
> -DWARFContext::~DWARFContext() {<br>
> - DeleteContainerPointers(CUs);<br>
> - DeleteContainerPointers(TUs);<br>
> - DeleteContainerPointers(DWOCUs);<br>
> - DeleteContainerPointers(DWOTUs);<br>
> -}<br>
> -<br>
> static void dumpPubSection(raw_ostream &OS, StringRef Name, StringRef Data,<br>
> bool LittleEndian, bool GnuStyle) {<br>
> OS << "\n." << Name << " contents:\n";<br>
> @@ -125,7 +117,7 @@ void DWARFContext::dump(raw_ostream &OS,<br>
> savedAddressByteSize = CU->getAddressByteSize();<br>
> unsigned stmtOffset =<br>
> CU->getCompileUnitDIE()->getAttributeValueAsSectionOffset(<br>
> - CU, DW_AT_stmt_list, -1U);<br>
> + CU.get(), DW_AT_stmt_list, -1U);<br>
> if (stmtOffset != -1U) {<br>
> DataExtractor lineData(getLineSection().Data, isLittleEndian(),<br>
> savedAddressByteSize);<br>
> @@ -309,7 +301,7 @@ void DWARFContext::parseCompileUnits() {<br>
> if (!CU->extract(DIData, &offset)) {<br>
> break;<br>
> }<br>
> - CUs.push_back(CU.release());<br>
> + CUs.push_back(std::move(CU));<br>
> offset = CUs.back()->getNextUnitOffset();<br>
> }<br>
> }<br>
> @@ -328,7 +320,7 @@ void DWARFContext::parseTypeUnits() {<br>
> &I.second.Relocs, isLittleEndian()));<br>
> if (!TU->extract(DIData, &offset))<br>
> break;<br>
> - TUs.push_back(TU.release());<br>
> + TUs.push_back(std::move(TU));<br>
> offset = TUs.back()->getNextUnitOffset();<br>
> }<br>
> }<br>
> @@ -349,7 +341,7 @@ void DWARFContext::parseDWOCompileUnits(<br>
> if (!DWOCU->extract(DIData, &offset)) {<br>
> break;<br>
> }<br>
> - DWOCUs.push_back(DWOCU.release());<br>
> + DWOCUs.push_back(std::move(DWOCU));<br>
> offset = DWOCUs.back()->getNextUnitOffset();<br>
> }<br>
> }<br>
> @@ -369,7 +361,7 @@ void DWARFContext::parseDWOTypeUnits() {<br>
> isLittleEndian()));<br>
> if (!TU->extract(DIData, &offset))<br>
> break;<br>
> - DWOTUs.push_back(TU.release());<br>
> + DWOTUs.push_back(std::move(TU));<br>
> offset = DWOTUs.back()->getNextUnitOffset();<br>
> }<br>
> }<br>
> @@ -377,14 +369,17 @@ void DWARFContext::parseDWOTypeUnits() {<br>
><br>
> namespace {<br>
> struct OffsetComparator {<br>
> - bool operator()(const DWARFCompileUnit *LHS,<br>
> - const DWARFCompileUnit *RHS) const {<br>
> +<br>
> + bool operator()(const std::unique_ptr<DWARFCompileUnit> &LHS,<br>
> + const std::unique_ptr<DWARFCompileUnit> &RHS) const {<br>
> return LHS->getOffset() < RHS->getOffset();<br>
> }<br>
> - bool operator()(const DWARFCompileUnit *LHS, uint32_t RHS) const {<br>
> + bool operator()(const std::unique_ptr<DWARFCompileUnit> &LHS,<br>
> + uint32_t RHS) const {<br>
> return LHS->getOffset() < RHS;<br>
> }<br>
> - bool operator()(uint32_t LHS, const DWARFCompileUnit *RHS) const {<br>
> + bool operator()(uint32_t LHS,<br>
> + const std::unique_ptr<DWARFCompileUnit> &RHS) const {<br>
> return LHS < RHS->getOffset();<br>
> }<br>
> };<br>
> @@ -393,10 +388,10 @@ namespace {<br>
> DWARFCompileUnit *DWARFContext::getCompileUnitForOffset(uint32_t Offset) {<br>
> parseCompileUnits();<br>
><br>
> - DWARFCompileUnit **CU =<br>
> + std::unique_ptr<DWARFCompileUnit> *CU =<br>
> std::lower_bound(CUs.begin(), CUs.end(), Offset, OffsetComparator());<br>
> if (CU != CUs.end()) {<br>
> - return *CU;<br>
> + return CU->get();<br>
> }<br>
> return 0;<br>
> }<br>
> @@ -636,7 +631,7 @@ DWARFContextInMemory::DWARFContextInMemo<br>
> // Make data point to uncompressed section contents and save its contents.<br>
> name = name.substr(1);<br>
> data = UncompressedSection->getBuffer();<br>
> - UncompressedSections.push_back(UncompressedSection.release());<br>
> + UncompressedSections.push_back(std::move(UncompressedSection));<br>
> }<br>
><br>
> StringRef *Section =<br>
> @@ -755,8 +750,4 @@ DWARFContextInMemory::DWARFContextInMemo<br>
> }<br>
> }<br>
><br>
> -DWARFContextInMemory::~DWARFContextInMemory() {<br>
> - DeleteContainerPointers(UncompressedSections);<br>
> -}<br>
> -<br>
> void DWARFContextInMemory::anchor() { }<br>
><br>
> Modified: llvm/trunk/lib/DebugInfo/DWARFContext.h<br>
> URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARFContext.h?rev=203770&r1=203769&r2=203770&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARFContext.h?rev=203770&r1=203769&r2=203770&view=diff</a><br>
> ==============================================================================<br>
> --- llvm/trunk/lib/DebugInfo/DWARFContext.h (original)<br>
> +++ llvm/trunk/lib/DebugInfo/DWARFContext.h Thu Mar 13 03:19:59 2014<br>
> @@ -28,8 +28,8 @@ namespace llvm {<br>
> /// information parsing. The actual data is supplied through pure virtual<br>
> /// methods that a concrete implementation provides.<br>
> class DWARFContext : public DIContext {<br>
> - typedef SmallVector<DWARFCompileUnit *, 1> CUVector;<br>
> - typedef SmallVector<DWARFTypeUnit *, 1> TUVector;<br>
> + typedef SmallVector<std::unique_ptr<DWARFCompileUnit>, 1> CUVector;<br>
> + typedef SmallVector<std::unique_ptr<DWARFTypeUnit>, 1> TUVector;<br>
><br>
> CUVector CUs;<br>
> TUVector TUs;<br>
> @@ -69,7 +69,6 @@ public:<br>
> };<br>
><br>
> DWARFContext() : DIContext(CK_DWARF) {}<br>
> - virtual ~DWARFContext();<br>
><br>
> static bool classof(const DIContext *DICtx) {<br>
> return DICtx->getKind() == CK_DWARF;<br>
> @@ -131,13 +130,13 @@ public:<br>
> /// Get the compile unit at the specified index for this compile unit.<br>
> DWARFCompileUnit *getCompileUnitAtIndex(unsigned index) {<br>
> parseCompileUnits();<br>
> - return CUs[index];<br>
> + return CUs[index].get();<br>
> }<br>
><br>
> /// Get the compile unit at the specified index for the DWO compile units.<br>
> DWARFCompileUnit *getDWOCompileUnitAtIndex(unsigned index) {<br>
> parseDWOCompileUnits();<br>
> - return DWOCUs[index];<br>
> + return DWOCUs[index].get();<br>
> }<br>
><br>
> /// Get a pointer to the parsed DebugAbbrev object.<br>
> @@ -237,11 +236,10 @@ class DWARFContextInMemory : public DWAR<br>
> StringRef RangeDWOSection;<br>
> StringRef AddrSection;<br>
><br>
> - SmallVector<MemoryBuffer*, 4> UncompressedSections;<br>
> + SmallVector<std::unique_ptr<MemoryBuffer>, 4> UncompressedSections;<br>
><br>
> public:<br>
> DWARFContextInMemory(object::ObjectFile *);<br>
> - ~DWARFContextInMemory();<br>
> bool isLittleEndian() const override { return IsLittleEndian; }<br>
> uint8_t getAddressSize() const override { return AddressSize; }<br>
> const Section &getInfoSection() override { return InfoSection; }<br>
><br>
><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div>Alexey Samsonov, MSK</div>
</div>