[Cmake-commits] CMake branch, next, updated. v3.5.1-952-g46007cb
Brad King
brad.king at kitware.com
Fri Apr 15 12:01:59 EDT 2016
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- Log -----------------------------------------------------------------
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=46007cb42fda49cbdf012ed35c728749c1f27a1b
commit 46007cb42fda49cbdf012ed35c728749c1f27a1b
Merge: fb70fd0 bbcfaca
Author: Brad King <brad.king at kitware.com>
AuthorDate: Fri Apr 15 12:01:58 2016 -0400
Commit: CMake Topic Stage <kwrobot at kitware.com>
CommitDate: Fri Apr 15 12:01:58 2016 -0400
Merge topic 'refactor-cmListFileBacktrace' into next
bbcfacae Remove unused cmake::IssueMessage overload
a3dec5a7 cmState: Remove unused entry point fields from snapshot data
a10a19d6 cmListFileBacktrace: Refactor storage to provide efficient value semantics
1f6bd8a9 cmState: Avoid accumulating snapshot storage for backtraces
18b6676b cmState: Add Snapshot method to get bottom of call stack
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=bbcfacae8e4e98a4cad1050f4a145fd8a7f23bea
commit bbcfacae8e4e98a4cad1050f4a145fd8a7f23bea
Author: Brad King <brad.king at kitware.com>
AuthorDate: Fri Apr 15 10:32:54 2016 -0400
Commit: Brad King <brad.king at kitware.com>
CommitDate: Fri Apr 15 11:30:18 2016 -0400
Remove unused cmake::IssueMessage overload
All callers now pass a full backtrace so we do not need the alternative
that takes a cmListFileContext directly. Drop this overload to remove
the code duplication.
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index dcc95af..8e3380f 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -2785,41 +2785,6 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
}
//----------------------------------------------------------------------------
-void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
- cmListFileContext const& lfc,
- bool force)
-{
- if (!force)
- {
- // override the message type, if needed, for warnings and errors
- cmake::MessageType override = this->ConvertMessageType(t);
- if (override != t)
- {
- t = override;
- force = true;
- }
- }
-
- if (!force && !this->IsMessageTypeVisible(t))
- {
- return;
- }
-
- std::ostringstream msg;
- if (!this->PrintMessagePreamble(t, msg))
- {
- return;
- }
-
- // Add the immediate context.
- msg << (lfc.Line ? " at " : " in ") << lfc;
-
- printMessageText(msg, text);
-
- displayMessage(t, msg);
-}
-
-//----------------------------------------------------------------------------
std::vector<std::string> cmake::GetDebugConfigs()
{
std::vector<std::string> configs;
diff --git a/Source/cmake.h b/Source/cmake.h
index 8496705..8644dda 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -358,9 +358,6 @@ class cmake
void IssueMessage(cmake::MessageType t, std::string const& text,
cmListFileBacktrace const& backtrace = cmListFileBacktrace(),
bool force = false);
- void IssueMessage(cmake::MessageType t, std::string const& text,
- cmListFileContext const& lfc,
- bool force = false);
///! run the --build option
int Build(const std::string& dir,
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=a3dec5a7090ede11448bd400570f561e40d5ffd2
commit a3dec5a7090ede11448bd400570f561e40d5ffd2
Author: Brad King <brad.king at kitware.com>
AuthorDate: Fri Apr 15 11:05:33 2016 -0400
Commit: Brad King <brad.king at kitware.com>
CommitDate: Fri Apr 15 11:30:18 2016 -0400
cmState: Remove unused entry point fields from snapshot data
This information is now kept in cmMakefile::Backtrace.
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index f4ca113..bafb09e 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -35,8 +35,6 @@ struct cmState::SnapshotDataType
cmLinkedTree<cmDefinitions>::iterator Vars;
cmLinkedTree<cmDefinitions>::iterator Root;
cmLinkedTree<cmDefinitions>::iterator Parent;
- std::string EntryPointCommand;
- long EntryPointLine;
std::vector<std::string>::size_type IncludeDirectoryPosition;
std::vector<std::string>::size_type CompileDefinitionsPosition;
std::vector<std::string>::size_type CompileOptionsPosition;
@@ -1116,16 +1114,6 @@ std::string cmState::Snapshot::GetExecutionListFile() const
return *this->Position->ExecutionListFile;
}
-std::string cmState::Snapshot::GetEntryPointCommand() const
-{
- return this->Position->EntryPointCommand;
-}
-
-long cmState::Snapshot::GetEntryPointLine() const
-{
- return this->Position->EntryPointLine;
-}
-
bool cmState::Snapshot::IsValid() const
{
return this->State && this->Position.IsValid()
diff --git a/Source/cmState.h b/Source/cmState.h
index 5ceaf24..7ead7e0 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -68,8 +68,6 @@ public:
std::string GetExecutionListFile() const;
std::vector<Snapshot> GetChildren();
- std::string GetEntryPointCommand() const;
- long GetEntryPointLine() const;
bool IsValid() const;
Snapshot GetBuildsystemDirectoryParent() const;
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=a10a19d60082709058b0b070412b9702d5bf1af1
commit a10a19d60082709058b0b070412b9702d5bf1af1
Author: Brad King <brad.king at kitware.com>
AuthorDate: Thu Apr 14 11:24:08 2016 -0400
Commit: Brad King <brad.king at kitware.com>
CommitDate: Fri Apr 15 11:29:47 2016 -0400
cmListFileBacktrace: Refactor storage to provide efficient value semantics
Since commit v3.4.0-rc1~321^2~2 (Genex: Store a backtrace, not a pointer
to one, 2015-07-08) we treat cmListFileBacktrace instances as
lightweight values. This was true at the time only because the
backtrace information was kept in the cmState snapshot hierarchy.
However, that forced us to accumulate a lot of otherwise short-lived
snapshots just to have the backtrace fields available for reference by
cmListFileBacktrace instances. Recent refactoring made backtrace
instances independent of the snapshot hierarchy to avoid accumulating
short-lived snapshots. This came at the cost of making backtrace values
heavy again, leading to lots of string coying and slower execution.
Fix this by refactoring cmListFileBacktrace to provide value semantics
with efficient shared storage underneath. Teach cmMakefile to maintain
its call stack using an instance of cmListFileBacktrace. This approach
allows the current backtrace to be efficiently saved whenever it is
needed.
Also teach cmListFileBacktrace the notion of a file-level scope. This
is useful for messages about the whole file (e.g. during parsing) that
are not specific to any line within it. Push the CMakeLists.txt scope
for each directory and never pop it. This ensures that we always have
some context information and simplifies cmMakefile::IssueMessage.
Push/pop a file-level scope as each included file is processed. This
supersedes cmParseFileScope and improves diagnostic message context
information in a few places. Fix the corresponding test cases to expect
the improved output.
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index f198ac3..1cc66f4 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -398,73 +398,172 @@ bool cmListFileParser::AddArgument(cmListFileLexer_Token* token,
}
}
-cmListFileBacktrace::cmListFileBacktrace(cmState::Snapshot snapshot,
- cmCommandContext const& cc)
- : Snapshot(snapshot)
+struct cmListFileBacktrace::Entry: public cmListFileContext
{
- if (!this->Snapshot.IsValid())
+ Entry(cmListFileContext const& lfc, Entry* up):
+ cmListFileContext(lfc), Up(up), RefCount(0)
{
- return;
+ if (this->Up)
+ {
+ this->Up->Ref();
+ }
}
-
- // Record the entire call stack now so that the `Snapshot` we
- // save for later refers to a long-lived scope. This avoids
- // having to keep short-lived scopes around just to extract
- // their backtrace information later.
-
- cmListFileContext lfc =
- cmListFileContext::FromCommandContext(
- cc, this->Snapshot.GetExecutionListFile());
- this->push_back(lfc);
-
- cmState::Snapshot parent = this->Snapshot.GetCallStackParent();
- while (parent.IsValid())
+ ~Entry()
+ {
+ if (this->Up)
+ {
+ this->Up->Unref();
+ }
+ }
+ void Ref()
+ {
+ ++this->RefCount;
+ }
+ void Unref()
{
- lfc.Name = this->Snapshot.GetEntryPointCommand();
- lfc.Line = this->Snapshot.GetEntryPointLine();
- lfc.FilePath = parent.GetExecutionListFile();
- if (lfc.FilePath.empty())
+ if (--this->RefCount == 0)
{
- break;
+ delete this;
}
- this->push_back(lfc);
+ }
+ Entry* Up;
+ unsigned int RefCount;
+};
- this->Snapshot = parent;
- parent = parent.GetCallStackParent();
+cmListFileBacktrace::cmListFileBacktrace(cmState::Snapshot bottom,
+ Entry* up,
+ cmListFileContext const& lfc):
+ Bottom(bottom), Cur(new Entry(lfc, up))
+{
+ assert(this->Bottom.IsValid());
+ this->Cur->Ref();
+}
+
+cmListFileBacktrace::cmListFileBacktrace(cmState::Snapshot bottom, Entry* cur):
+ Bottom(bottom), Cur(cur)
+{
+ if (this->Cur)
+ {
+ assert(this->Bottom.IsValid());
+ this->Cur->Ref();
}
+}
+
+cmListFileBacktrace::cmListFileBacktrace(): Bottom(), Cur(0)
+{
+}
+
+cmListFileBacktrace::cmListFileBacktrace(cmState::Snapshot snapshot):
+ Bottom(snapshot.GetCallStackBottom()), Cur(0)
+{
+}
+
+cmListFileBacktrace::cmListFileBacktrace(cmListFileBacktrace const& r):
+ Bottom(r.Bottom), Cur(r.Cur)
+{
+ if (this->Cur)
+ {
+ assert(this->Bottom.IsValid());
+ this->Cur->Ref();
+ }
+}
- this->Snapshot = this->Snapshot.GetCallStackBottom();
+cmListFileBacktrace&
+cmListFileBacktrace::operator=(cmListFileBacktrace const& r)
+{
+ cmListFileBacktrace tmp(r);
+ std::swap(this->Cur, tmp.Cur);
+ std::swap(this->Bottom, tmp.Bottom);
+ return *this;
}
cmListFileBacktrace::~cmListFileBacktrace()
{
+ if (this->Cur)
+ {
+ this->Cur->Unref();
+ }
+}
+
+cmListFileBacktrace
+cmListFileBacktrace::Push(std::string const& file) const
+{
+ // We are entering a file-level scope but have not yet reached
+ // any specific line or command invocation within it. This context
+ // is useful to print when it is at the top but otherwise can be
+ // skipped during call stack printing.
+ cmListFileContext lfc;
+ lfc.FilePath = file;
+ return cmListFileBacktrace(this->Bottom, this->Cur, lfc);
+}
+
+cmListFileBacktrace
+cmListFileBacktrace::Push(cmListFileContext const& lfc) const
+{
+ return cmListFileBacktrace(this->Bottom, this->Cur, lfc);
+}
+
+cmListFileBacktrace cmListFileBacktrace::Pop() const
+{
+ assert(this->Cur);
+ return cmListFileBacktrace(this->Bottom, this->Cur->Up);
+}
+
+cmListFileContext const& cmListFileBacktrace::Top() const
+{
+ if (this->Cur)
+ {
+ return *this->Cur;
+ }
+ else
+ {
+ static cmListFileContext const empty;
+ return empty;
+ }
}
void cmListFileBacktrace::PrintTitle(std::ostream& out) const
{
- if (this->empty())
+ if (!this->Cur)
{
return;
}
- cmOutputConverter converter(this->Snapshot);
- cmListFileContext lfc = this->front();
- lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
+ cmOutputConverter converter(this->Bottom);
+ cmListFileContext lfc = *this->Cur;
+ if (!this->Bottom.GetState()->GetIsInTryCompile())
+ {
+ lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
+ }
out << (lfc.Line ? " at " : " in ") << lfc;
}
void cmListFileBacktrace::PrintCallStack(std::ostream& out) const
{
- if (this->size() <= 1)
+ if (!this->Cur || !this->Cur->Up)
{
return;
}
- out << "Call Stack (most recent call first):\n";
- cmOutputConverter converter(this->Snapshot);
- for (const_iterator i = this->begin() + 1; i != this->end(); ++i)
+ bool first = true;
+ cmOutputConverter converter(this->Bottom);
+ for (Entry* i = this->Cur->Up; i; i = i->Up)
{
+ if (i->Name.empty())
+ {
+ // Skip this whole-file scope. When we get here we already will
+ // have printed a more-specific context within the file.
+ continue;
+ }
+ if (first)
+ {
+ first = false;
+ out << "Call Stack (most recent call first):\n";
+ }
cmListFileContext lfc = *i;
- lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
+ if (!this->Bottom.GetState()->GetIsInTryCompile())
+ {
+ lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
+ }
out << " " << lfc << "\n";
}
}
diff --git a/Source/cmListFileCache.h b/Source/cmListFileCache.h
index d3cab22..9fa8585 100644
--- a/Source/cmListFileCache.h
+++ b/Source/cmListFileCache.h
@@ -87,17 +87,53 @@ struct cmListFileFunction: public cmCommandContext
std::vector<cmListFileArgument> Arguments;
};
-class cmListFileBacktrace: private std::vector<cmListFileContext>
+// Represent a backtrace (call stack). Provide value semantics
+// but use efficient reference-counting underneath to avoid copies.
+class cmListFileBacktrace
{
- public:
- cmListFileBacktrace(cmState::Snapshot snapshot = cmState::Snapshot(),
- cmCommandContext const& cc = cmCommandContext());
- ~cmListFileBacktrace();
-
- void PrintTitle(std::ostream& out) const;
- void PrintCallStack(std::ostream& out) const;
- private:
- cmState::Snapshot Snapshot;
+public:
+ // Default-constructed backtrace may not be used until after
+ // set via assignment from a backtrace constructed with a
+ // valid snapshot.
+ cmListFileBacktrace();
+
+ // Construct an empty backtrace whose bottom sits in the directory
+ // indicated by the given valid snapshot.
+ cmListFileBacktrace(cmState::Snapshot snapshot);
+
+ // Backtraces may be copied and assigned as values.
+ cmListFileBacktrace(cmListFileBacktrace const& r);
+ cmListFileBacktrace& operator=(cmListFileBacktrace const& r);
+ ~cmListFileBacktrace();
+
+ // Get a backtrace with the given file scope added to the top.
+ // May not be called until after construction with a valid snapshot.
+ cmListFileBacktrace Push(std::string const& file) const;
+
+ // Get a backtrace with the given call context added to the top.
+ // May not be called until after construction with a valid snapshot.
+ cmListFileBacktrace Push(cmListFileContext const& lfc) const;
+
+ // Get a backtrace with the top level removed.
+ // May not be called until after a matching Push.
+ cmListFileBacktrace Pop() const;
+
+ // Get the context at the top of the backtrace.
+ // Returns an empty context if the backtrace is empty.
+ cmListFileContext const& Top() const;
+
+ // Print the top of the backtrace.
+ void PrintTitle(std::ostream& out) const;
+
+ // Print the call stack below the top of the backtrace.
+ void PrintCallStack(std::ostream& out) const;
+private:
+ struct Entry;
+ cmState::Snapshot Bottom;
+ Entry* Cur;
+ cmListFileBacktrace(cmState::Snapshot bottom, Entry* up,
+ cmListFileContext const& lfc);
+ cmListFileBacktrace(cmState::Snapshot bottom, Entry* cur);
};
struct cmListFile
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 13bcdac..3a56c2a 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -46,7 +46,8 @@
cmMakefile::cmMakefile(cmGlobalGenerator* globalGenerator,
cmState::Snapshot const& snapshot)
: GlobalGenerator(globalGenerator),
- StateSnapshot(snapshot)
+ StateSnapshot(snapshot),
+ Backtrace(snapshot)
{
this->IsSourceFileTryCompile = false;
@@ -115,24 +116,8 @@ void cmMakefile::IssueMessage(cmake::MessageType t,
{
this->ExecutionStatusStack.back()->SetNestedError(true);
}
- this->GetCMakeInstance()->IssueMessage(t, text, this->GetBacktrace(),
- force);
- }
- else
- {
- cmListFileContext lfc;
- // We are not currently executing a command. Add whatever context
- // information we have.
- lfc.FilePath = this->GetExecutionFilePath();
-
- if(!this->GetCMakeInstance()->GetIsInTryCompile())
- {
- cmOutputConverter converter(this->StateSnapshot);
- lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
- }
- lfc.Line = 0;
- this->GetCMakeInstance()->IssueMessage(t, text, lfc, force);
}
+ this->GetCMakeInstance()->IssueMessage(t, text, this->GetBacktrace(), force);
}
cmStringRange cmMakefile::GetIncludeDirectoriesEntries() const
@@ -170,29 +155,28 @@ cmBacktraceRange cmMakefile::GetCompileDefinitionsBacktraces() const
//----------------------------------------------------------------------------
cmListFileBacktrace cmMakefile::GetBacktrace() const
{
- cmListFileBacktrace backtrace;
- if (!this->ContextStack.empty())
- {
- backtrace = cmListFileBacktrace(this->StateSnapshot,
- *this->ContextStack.back());
- }
- return backtrace;
+ return this->Backtrace;
}
//----------------------------------------------------------------------------
-cmListFileBacktrace
-cmMakefile::GetBacktrace(cmCommandContext const& cc) const
+cmListFileBacktrace cmMakefile::GetBacktrace(cmCommandContext const& cc) const
{
- cmState::Snapshot snp = this->StateSnapshot;
- return cmListFileBacktrace(snp, cc);
+ cmListFileContext lfc;
+ lfc.Name = cc.Name;
+ lfc.Line = cc.Line;
+ lfc.FilePath = this->StateSnapshot.GetExecutionListFile();
+ return this->Backtrace.Push(lfc);
}
//----------------------------------------------------------------------------
cmListFileContext cmMakefile::GetExecutionContext() const
{
- return cmListFileContext::FromCommandContext(
- *this->ContextStack.back(),
- this->StateSnapshot.GetExecutionListFile());
+ cmListFileContext const& cur = this->Backtrace.Top();
+ cmListFileContext lfc;
+ lfc.Name = cur.Name;
+ lfc.Line = cur.Line;
+ lfc.FilePath = this->StateSnapshot.GetExecutionListFile();
+ return lfc;
}
//----------------------------------------------------------------------------
@@ -226,17 +210,20 @@ void cmMakefile::PrintCommandTrace(const cmListFileFunction& lff) const
class cmMakefileCall
{
public:
- cmMakefileCall(cmMakefile* mf, const cmCommandContext& lfc,
+ cmMakefileCall(cmMakefile* mf, cmCommandContext const& cc,
cmExecutionStatus& status): Makefile(mf)
{
- this->Makefile->ContextStack.push_back(&lfc);
+ cmListFileContext const& lfc =
+ cmListFileContext::FromCommandContext(
+ cc, this->Makefile->StateSnapshot.GetExecutionListFile());
+ this->Makefile->Backtrace = this->Makefile->Backtrace.Push(lfc);
this->Makefile->ExecutionStatusStack.push_back(&status);
}
~cmMakefileCall()
{
this->Makefile->ExecutionStatusStack.pop_back();
- this->Makefile->ContextStack.pop_back();
+ this->Makefile->Backtrace = this->Makefile->Backtrace.Pop();
}
private:
cmMakefile* Makefile;
@@ -350,13 +337,14 @@ cmMakefile::IncludeScope::IncludeScope(cmMakefile* mf,
Makefile(mf), NoPolicyScope(noPolicyScope),
CheckCMP0011(false), ReportError(true)
{
+ this->Makefile->Backtrace =
+ this->Makefile->Backtrace.Push(filenametoread);
+
this->Makefile->PushFunctionBlockerBarrier();
this->Makefile->StateSnapshot =
this->Makefile->GetState()->CreateIncludeFileSnapshot(
this->Makefile->StateSnapshot,
- this->Makefile->ContextStack.back()->Name,
- this->Makefile->ContextStack.back()->Line,
filenametoread);
if(!this->NoPolicyScope)
{
@@ -416,6 +404,8 @@ cmMakefile::IncludeScope::~IncludeScope()
this->Makefile->PopSnapshot(this->ReportError);
this->Makefile->PopFunctionBlockerBarrier(this->ReportError);
+
+ this->Makefile->Backtrace = this->Makefile->Backtrace.Pop();
}
//----------------------------------------------------------------------------
@@ -458,25 +448,6 @@ void cmMakefile::IncludeScope::EnforceCMP0011()
}
}
-class cmParseFileScope
-{
-public:
- cmParseFileScope(cmMakefile* mf)
- : Makefile(mf)
- {
- this->Makefile->ContextStack.push_back(&this->Context);
- }
-
- ~cmParseFileScope()
- {
- this->Makefile->ContextStack.pop_back();
- }
-
-private:
- cmMakefile* Makefile;
- cmCommandContext Context;
-};
-
bool cmMakefile::ReadDependentFile(const char* filename, bool noPolicyScope)
{
this->AddDefinition("CMAKE_PARENT_LIST_FILE",
@@ -488,13 +459,10 @@ bool cmMakefile::ReadDependentFile(const char* filename, bool noPolicyScope)
IncludeScope incScope(this, filenametoread, noPolicyScope);
cmListFile listFile;
- {
- cmParseFileScope pfs(this);
if (!listFile.ParseFile(filenametoread.c_str(), false, this))
{
return false;
}
- }
this->ReadListFile(listFile, filenametoread);
if(cmSystemTools::GetFatalErrorOccured())
@@ -510,16 +478,12 @@ public:
ListFileScope(cmMakefile* mf, std::string const& filenametoread)
: Makefile(mf), ReportError(true)
{
- long line = 0;
- std::string name;
- if (!this->Makefile->ContextStack.empty())
- {
- line = this->Makefile->ContextStack.back()->Line;
- name = this->Makefile->ContextStack.back()->Name;
- }
+ this->Makefile->Backtrace =
+ this->Makefile->Backtrace.Push(filenametoread);
+
this->Makefile->StateSnapshot =
this->Makefile->GetState()->CreateInlineListFileSnapshot(
- this->Makefile->StateSnapshot, name, line, filenametoread);
+ this->Makefile->StateSnapshot, filenametoread);
assert(this->Makefile->StateSnapshot.IsValid());
this->Makefile->PushFunctionBlockerBarrier();
@@ -529,6 +493,7 @@ public:
{
this->Makefile->PopSnapshot(this->ReportError);
this->Makefile->PopFunctionBlockerBarrier(this->ReportError);
+ this->Makefile->Backtrace = this->Makefile->Backtrace.Pop();
}
void Quiet() { this->ReportError = false; }
@@ -546,13 +511,10 @@ bool cmMakefile::ReadListFile(const char* filename)
ListFileScope scope(this, filenametoread);
cmListFile listFile;
- {
- cmParseFileScope pfs(this);
if (!listFile.ParseFile(filenametoread.c_str(), false, this))
{
return false;
}
- }
this->ReadListFile(listFile, filenametoread);
if(cmSystemTools::GetFatalErrorOccured())
@@ -1525,9 +1487,7 @@ void cmMakefile::PushFunctionScope(std::string const& fileName,
{
this->StateSnapshot =
this->GetState()->CreateFunctionCallSnapshot(
- this->StateSnapshot,
- this->ContextStack.back()->Name, this->ContextStack.back()->Line,
- fileName);
+ this->StateSnapshot, fileName);
assert(this->StateSnapshot.IsValid());
this->PushLoopBlockBarrier();
@@ -1563,9 +1523,7 @@ void cmMakefile::PushMacroScope(std::string const& fileName,
{
this->StateSnapshot =
this->GetState()->CreateMacroCallSnapshot(
- this->StateSnapshot,
- this->ContextStack.back()->Name, this->ContextStack.back()->Line,
- fileName);
+ this->StateSnapshot, fileName);
assert(this->StateSnapshot.IsValid());
this->PushFunctionBlockerBarrier();
@@ -1633,6 +1591,15 @@ private:
//----------------------------------------------------------------------------
void cmMakefile::Configure()
{
+ std::string currentStart =
+ this->StateSnapshot.GetDirectory().GetCurrentSource();
+ currentStart += "/CMakeLists.txt";
+
+ // Add the bottom of all backtraces within this directory.
+ // We will never pop this scope because it should be available
+ // for messages during the generate step too.
+ this->Backtrace = this->Backtrace.Push(currentStart);
+
BuildsystemFileScope scope(this);
// make sure the CMakeFiles dir is there
@@ -1640,20 +1607,14 @@ void cmMakefile::Configure()
filesDir += cmake::GetCMakeFilesDirectory();
cmSystemTools::MakeDirectory(filesDir.c_str());
- std::string currentStart =
- this->StateSnapshot.GetDirectory().GetCurrentSource();
- currentStart += "/CMakeLists.txt";
assert(cmSystemTools::FileExists(currentStart.c_str(), true));
this->AddDefinition("CMAKE_PARENT_LIST_FILE", currentStart.c_str());
cmListFile listFile;
- {
- cmParseFileScope pfs(this);
if (!listFile.ParseFile(currentStart.c_str(), this->IsRootMakefile(), this))
{
return;
}
- }
this->ReadListFile(listFile, currentStart);
if(cmSystemTools::GetFatalErrorOccured())
{
@@ -1740,9 +1701,7 @@ void cmMakefile::AddSubDirectory(const std::string& srcPath,
}
cmState::Snapshot newSnapshot = this->GetState()
- ->CreateBuildsystemDirectorySnapshot(this->StateSnapshot,
- this->ContextStack.back()->Name,
- this->ContextStack.back()->Line);
+ ->CreateBuildsystemDirectorySnapshot(this->StateSnapshot);
newSnapshot.GetDirectory().SetCurrentSource(srcPath);
newSnapshot.GetDirectory().SetCurrentBinary(binPath);
@@ -4128,17 +4087,8 @@ std::string cmMakefile::FormatListFileStack() const
void cmMakefile::PushScope()
{
- std::string commandName;
- long line = 0;
- if (!this->ContextStack.empty())
- {
- commandName = this->ContextStack.back()->Name;
- line = this->ContextStack.back()->Line;
- }
this->StateSnapshot = this->GetState()->CreateVariableScopeSnapshot(
- this->StateSnapshot,
- commandName,
- line);
+ this->StateSnapshot);
this->PushLoopBlockBarrier();
#if defined(CMAKE_BUILD_WITH_CMAKE)
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 7217944..089a83d 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -835,6 +835,7 @@ private:
cmMakefile& operator=(const cmMakefile& mf);
cmState::Snapshot StateSnapshot;
+ cmListFileBacktrace Backtrace;
void ReadListFile(cmListFile const& listFile,
const std::string& filenametoread);
@@ -862,7 +863,6 @@ private:
std::vector<cmGeneratorExpressionEvaluationFile*> EvaluationFiles;
- std::vector<cmCommandContext const*> ContextStack;
std::vector<cmExecutionStatus*> ExecutionStatusStack;
friend class cmMakefileCall;
friend class cmParseFileScope;
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index bec5682..f4ca113 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -845,14 +845,10 @@ cmState::Snapshot cmState::CreateBaseSnapshot()
}
cmState::Snapshot
-cmState::CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine)
+cmState::CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot)
{
assert(originSnapshot.IsValid());
PositionType pos = this->SnapshotData.Push(originSnapshot.Position);
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->DirectoryParent = originSnapshot.Position;
pos->ScopeParent = originSnapshot.Position;
pos->SnapshotType = BuildsystemDirectoryType;
@@ -886,15 +882,11 @@ cmState::CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot,
cmState::Snapshot
cmState::CreateFunctionCallSnapshot(cmState::Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine,
std::string const& fileName)
{
PositionType pos = this->SnapshotData.Push(originSnapshot.Position,
*originSnapshot.Position);
pos->ScopeParent = originSnapshot.Position;
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->SnapshotType = FunctionCallType;
pos->Keep = false;
pos->ExecutionListFile = this->ExecutionListFiles.Push(
@@ -912,14 +904,10 @@ cmState::CreateFunctionCallSnapshot(cmState::Snapshot originSnapshot,
cmState::Snapshot
cmState::CreateMacroCallSnapshot(cmState::Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine,
std::string const& fileName)
{
PositionType pos = this->SnapshotData.Push(originSnapshot.Position,
*originSnapshot.Position);
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->SnapshotType = MacroCallType;
pos->Keep = false;
pos->ExecutionListFile = this->ExecutionListFiles.Push(
@@ -932,14 +920,10 @@ cmState::CreateMacroCallSnapshot(cmState::Snapshot originSnapshot,
cmState::Snapshot
cmState::CreateIncludeFileSnapshot(cmState::Snapshot originSnapshot,
- const std::string& entryPointCommand,
- long entryPointLine,
const std::string& fileName)
{
PositionType pos = this->SnapshotData.Push(originSnapshot.Position,
*originSnapshot.Position);
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->SnapshotType = IncludeFileType;
pos->Keep = true;
pos->ExecutionListFile = this->ExecutionListFiles.Push(
@@ -951,15 +935,11 @@ cmState::CreateIncludeFileSnapshot(cmState::Snapshot originSnapshot,
}
cmState::Snapshot
-cmState::CreateVariableScopeSnapshot(cmState::Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine)
+cmState::CreateVariableScopeSnapshot(cmState::Snapshot originSnapshot)
{
PositionType pos = this->SnapshotData.Push(originSnapshot.Position,
*originSnapshot.Position);
pos->ScopeParent = originSnapshot.Position;
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->SnapshotType = VariableScopeType;
pos->Keep = false;
pos->PolicyScope = originSnapshot.Position->Policies;
@@ -975,14 +955,10 @@ cmState::CreateVariableScopeSnapshot(cmState::Snapshot originSnapshot,
cmState::Snapshot
cmState::CreateInlineListFileSnapshot(cmState::Snapshot originSnapshot,
- const std::string& entryPointCommand,
- long entryPointLine,
const std::string& fileName)
{
PositionType pos = this->SnapshotData.Push(originSnapshot.Position,
*originSnapshot.Position);
- pos->EntryPointLine = entryPointLine;
- pos->EntryPointCommand = entryPointCommand;
pos->SnapshotType = InlineListFileType;
pos->Keep = true;
pos->ExecutionListFile = this->ExecutionListFiles.Push(
diff --git a/Source/cmState.h b/Source/cmState.h
index 507d500..5ceaf24 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -192,27 +192,15 @@ public:
Snapshot CreateBaseSnapshot();
Snapshot
- CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine);
+ CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot);
Snapshot CreateFunctionCallSnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine,
std::string const& fileName);
Snapshot CreateMacroCallSnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine,
std::string const& fileName);
Snapshot CreateIncludeFileSnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine,
std::string const& fileName);
- Snapshot CreateVariableScopeSnapshot(Snapshot originSnapshot,
- std::string const& entryPointCommand,
- long entryPointLine);
+ Snapshot CreateVariableScopeSnapshot(Snapshot originSnapshot);
Snapshot CreateInlineListFileSnapshot(Snapshot originSnapshot,
- const std::string& entryPointCommand,
- long entryPointLine,
std::string const& fileName);
Snapshot CreatePolicyScopeSnapshot(Snapshot originSnapshot);
Snapshot Pop(Snapshot originSnapshot);
diff --git a/Tests/RunCMake/PolicyScope/NotClosed-stderr.txt b/Tests/RunCMake/PolicyScope/NotClosed-stderr.txt
index 293d161..08c42a0 100644
--- a/Tests/RunCMake/PolicyScope/NotClosed-stderr.txt
+++ b/Tests/RunCMake/PolicyScope/NotClosed-stderr.txt
@@ -1,4 +1,4 @@
-^CMake Error at NotClosed.cmake:[0-9]+ \(include\):
+^CMake Error in NotClosed.cmake:
cmake_policy PUSH without matching POP
Call Stack \(most recent call first\):
CMakeLists.txt:[0-9]+ \(include\)$
diff --git a/Tests/RunCMake/Syntax/FunctionUnmatched-stderr.txt b/Tests/RunCMake/Syntax/FunctionUnmatched-stderr.txt
index 776a8f2..306c255 100644
--- a/Tests/RunCMake/Syntax/FunctionUnmatched-stderr.txt
+++ b/Tests/RunCMake/Syntax/FunctionUnmatched-stderr.txt
@@ -1,6 +1,8 @@
-^CMake Error at CMakeLists.txt:[0-9]+ \(include\):
+^CMake Error in FunctionUnmatched.cmake:
A logical block opening on the line
.*/Tests/RunCMake/Syntax/FunctionUnmatched.cmake:[0-9]+ \(function\)
- is not closed.$
+ is not closed.
+Call Stack \(most recent call first\):
+ CMakeLists.txt:[0-9]+ \(include\)$
diff --git a/Tests/RunCMake/Syntax/MacroUnmatched-stderr.txt b/Tests/RunCMake/Syntax/MacroUnmatched-stderr.txt
index 1699c43..440d863 100644
--- a/Tests/RunCMake/Syntax/MacroUnmatched-stderr.txt
+++ b/Tests/RunCMake/Syntax/MacroUnmatched-stderr.txt
@@ -1,6 +1,8 @@
-^CMake Error at CMakeLists.txt:[0-9]+ \(include\):
+^CMake Error in MacroUnmatched.cmake:
A logical block opening on the line
.*/Tests/RunCMake/Syntax/MacroUnmatched.cmake:[0-9]+ \(macro\)
- is not closed.$
+ is not closed.
+Call Stack \(most recent call first\):
+ CMakeLists.txt:[0-9]+ \(include\)$
diff --git a/Tests/RunCMake/find_package/PolicyPush-stderr.txt b/Tests/RunCMake/find_package/PolicyPush-stderr.txt
index 1afcb16..73cf2e6 100644
--- a/Tests/RunCMake/find_package/PolicyPush-stderr.txt
+++ b/Tests/RunCMake/find_package/PolicyPush-stderr.txt
@@ -1,4 +1,4 @@
-^CMake Error at PolicyPush/PolicyPushConfigVersion.cmake:1 \(find_package\):
+^CMake Error in PolicyPush/PolicyPushConfigVersion.cmake:
cmake_policy PUSH without matching POP
Call Stack \(most recent call first\):
PolicyPush.cmake:1 \(find_package\)
diff --git a/Tests/RunCMake/while/EndMismatch-stderr.txt b/Tests/RunCMake/while/EndMismatch-stderr.txt
index d7439e8..54d299f 100644
--- a/Tests/RunCMake/while/EndMismatch-stderr.txt
+++ b/Tests/RunCMake/while/EndMismatch-stderr.txt
@@ -1,4 +1,4 @@
-^CMake Warning \(dev\) at EndMismatch.cmake:3 \(include\):
+^CMake Warning \(dev\) in EndMismatch.cmake:
A logical block opening on the line
.*/Tests/RunCMake/while/EndMismatch.cmake:1 \(while\)
diff --git a/Tests/RunCMake/while/EndMissing-stderr.txt b/Tests/RunCMake/while/EndMissing-stderr.txt
index 099a8b2..964792f 100644
--- a/Tests/RunCMake/while/EndMissing-stderr.txt
+++ b/Tests/RunCMake/while/EndMissing-stderr.txt
@@ -1,6 +1,8 @@
-^CMake Error at CMakeLists.txt:3 \(include\):
+^CMake Error in EndMissing.cmake:
A logical block opening on the line
.*/Tests/RunCMake/while/EndMissing.cmake:1 \(while\)
- is not closed.$
+ is not closed.
+Call Stack \(most recent call first\):
+ CMakeLists.txt:[0-9]+ \(include\)$
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=1f6bd8a93f602f9d4dde1c3ea697211897f25827
commit 1f6bd8a93f602f9d4dde1c3ea697211897f25827
Author: Brad King <brad.king at kitware.com>
AuthorDate: Tue Apr 12 17:07:08 2016 -0400
Commit: Brad King <brad.king at kitware.com>
CommitDate: Fri Apr 15 10:31:39 2016 -0400
cmState: Avoid accumulating snapshot storage for backtraces
Changes during post-3.3/pre-3.4 development refactored storage of most
configure-time information, including variable bindings and function
scopes. All scopes (even short-lived) were kept persistently for
possible future debugging features, causing huge accumulated memory
usage. This was mostly addressed by commit v3.4.1~4^2 (cmState: Avoid
accumulating snapshot storage for short-lived scopes, 2015-11-24).
Since then we still keep short-lived scopes when they are needed for a
backtrace. This is because since commit v3.4.0-rc1~378^2
(cmListFileBacktrace: Implement in terms of cmState::Snapshot,
2015-05-29) backtraces have been lightweight objects that simply point
into the snapshot tree. While the intention of this approach was to
avoid duplicating the call stack file path strings, the cost turned out
to be holding on to the entire call stack worth of scope snapshots,
which is much worse.
Furthermore, since commit v3.4.0-rc2~1^2 (cmIfCommand: Issue CMP0054
warning with appropriate context, 2015-10-20) all conditions used in
`if()` commands hold a backtrace for use in diagnostic messages. Even
though the backtrace is short-lived it still causes the scope snapshot
to be kept. This means that code like
function(foo)
if(0)
endif()
endfunction()
foreach(i RANGE 1000000)
foo()
endforeach()
accumulates storage for the function call scope snapshots.
Fix this by partially reverting commit v3.4.0-rc1~378^2 and saving the
entire call stack during cmListFileBacktrace construction. This way
we can avoid keeping short-lived scope snapshot storage in all cases.
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index d5d0184..f198ac3 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -400,13 +400,40 @@ bool cmListFileParser::AddArgument(cmListFileLexer_Token* token,
cmListFileBacktrace::cmListFileBacktrace(cmState::Snapshot snapshot,
cmCommandContext const& cc)
- : Context(cc)
- , Snapshot(snapshot)
+ : Snapshot(snapshot)
{
- if (this->Snapshot.IsValid())
+ if (!this->Snapshot.IsValid())
+ {
+ return;
+ }
+
+ // Record the entire call stack now so that the `Snapshot` we
+ // save for later refers to a long-lived scope. This avoids
+ // having to keep short-lived scopes around just to extract
+ // their backtrace information later.
+
+ cmListFileContext lfc =
+ cmListFileContext::FromCommandContext(
+ cc, this->Snapshot.GetExecutionListFile());
+ this->push_back(lfc);
+
+ cmState::Snapshot parent = this->Snapshot.GetCallStackParent();
+ while (parent.IsValid())
{
- this->Snapshot.Keep();
+ lfc.Name = this->Snapshot.GetEntryPointCommand();
+ lfc.Line = this->Snapshot.GetEntryPointLine();
+ lfc.FilePath = parent.GetExecutionListFile();
+ if (lfc.FilePath.empty())
+ {
+ break;
+ }
+ this->push_back(lfc);
+
+ this->Snapshot = parent;
+ parent = parent.GetCallStackParent();
}
+
+ this->Snapshot = this->Snapshot.GetCallStackBottom();
}
cmListFileBacktrace::~cmListFileBacktrace()
@@ -415,48 +442,30 @@ cmListFileBacktrace::~cmListFileBacktrace()
void cmListFileBacktrace::PrintTitle(std::ostream& out) const
{
- if (!this->Snapshot.IsValid())
+ if (this->empty())
{
return;
}
cmOutputConverter converter(this->Snapshot);
- cmListFileContext lfc =
- cmListFileContext::FromCommandContext(
- this->Context, this->Snapshot.GetExecutionListFile());
+ cmListFileContext lfc = this->front();
lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
out << (lfc.Line ? " at " : " in ") << lfc;
}
void cmListFileBacktrace::PrintCallStack(std::ostream& out) const
{
- if (!this->Snapshot.IsValid())
- {
- return;
- }
- cmState::Snapshot parent = this->Snapshot.GetCallStackParent();
- if (!parent.IsValid() || parent.GetExecutionListFile().empty())
+ if (this->size() <= 1)
{
return;
}
+ out << "Call Stack (most recent call first):\n";
cmOutputConverter converter(this->Snapshot);
- std::string commandName = this->Snapshot.GetEntryPointCommand();
- long commandLine = this->Snapshot.GetEntryPointLine();
-
- out << "Call Stack (most recent call first):\n";
- while(parent.IsValid())
+ for (const_iterator i = this->begin() + 1; i != this->end(); ++i)
{
- cmListFileContext lfc;
- lfc.Name = commandName;
- lfc.Line = commandLine;
-
- lfc.FilePath = converter.Convert(parent.GetExecutionListFile(),
- cmOutputConverter::HOME);
+ cmListFileContext lfc = *i;
+ lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);
out << " " << lfc << "\n";
-
- commandName = parent.GetEntryPointCommand();
- commandLine = parent.GetEntryPointLine();
- parent = parent.GetCallStackParent();
}
}
diff --git a/Source/cmListFileCache.h b/Source/cmListFileCache.h
index 4d3055f..d3cab22 100644
--- a/Source/cmListFileCache.h
+++ b/Source/cmListFileCache.h
@@ -87,7 +87,7 @@ struct cmListFileFunction: public cmCommandContext
std::vector<cmListFileArgument> Arguments;
};
-class cmListFileBacktrace
+class cmListFileBacktrace: private std::vector<cmListFileContext>
{
public:
cmListFileBacktrace(cmState::Snapshot snapshot = cmState::Snapshot(),
@@ -97,7 +97,6 @@ class cmListFileBacktrace
void PrintTitle(std::ostream& out) const;
void PrintCallStack(std::ostream& out) const;
private:
- cmCommandContext Context;
cmState::Snapshot Snapshot;
};
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index c48f9b1..bec5682 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -1098,11 +1098,6 @@ void cmState::Directory::SetCurrentBinary(std::string const& dir)
this->Snapshot_.SetDefinition("CMAKE_CURRENT_BINARY_DIR", loc.c_str());
}
-void cmState::Snapshot::Keep()
-{
- this->Position->Keep = true;
-}
-
void cmState::Snapshot::SetListFile(const std::string& listfile)
{
*this->Position->ExecutionListFile = listfile;
diff --git a/Source/cmState.h b/Source/cmState.h
index 0cce644..507d500 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -63,7 +63,6 @@ public:
std::vector<std::string> ClosureKeys() const;
bool RaiseScope(std::string const& var, const char* varDef);
- void Keep();
void SetListFile(std::string const& listfile);
std::string GetExecutionListFile() const;
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=18b6676bff6d50ebc38c75e7998298fca75a01c5
commit 18b6676bff6d50ebc38c75e7998298fca75a01c5
Author: Brad King <brad.king at kitware.com>
AuthorDate: Wed Apr 13 09:41:24 2016 -0400
Commit: Brad King <brad.king at kitware.com>
CommitDate: Fri Apr 15 10:31:39 2016 -0400
cmState: Add Snapshot method to get bottom of call stack
The bottom of the call stack is always a long-lived snapshot and can be
saved for later use with cmOutputConverter.
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index be8e418..c48f9b1 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -1213,6 +1213,21 @@ cmState::Snapshot cmState::Snapshot::GetCallStackParent() const
return snapshot;
}
+cmState::Snapshot cmState::Snapshot::GetCallStackBottom() const
+{
+ assert(this->State);
+ assert(this->Position != this->State->SnapshotData.Root());
+
+ PositionType pos = this->Position;
+ while (pos->SnapshotType != cmState::BaseType &&
+ pos->SnapshotType != cmState::BuildsystemDirectoryType &&
+ pos != this->State->SnapshotData.Root())
+ {
+ ++pos;
+ }
+ return Snapshot(this->State, pos);
+}
+
void cmState::Snapshot::PushPolicy(cmPolicies::PolicyMap entry, bool weak)
{
PositionType pos = this->Position;
diff --git a/Source/cmState.h b/Source/cmState.h
index ef61406..0cce644 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -75,6 +75,7 @@ public:
bool IsValid() const;
Snapshot GetBuildsystemDirectoryParent() const;
Snapshot GetCallStackParent() const;
+ Snapshot GetCallStackBottom() const;
SnapshotType GetType() const;
void SetPolicy(cmPolicies::PolicyID id, cmPolicies::PolicyStatus status);
-----------------------------------------------------------------------
Summary of changes:
Source/cmListFileCache.cxx | 176 ++++++++++++++++----
Source/cmListFileCache.h | 55 ++++--
Source/cmMakefile.cxx | 140 +++++-----------
Source/cmMakefile.h | 2 +-
Source/cmState.cxx | 60 ++-----
Source/cmState.h | 20 +--
Source/cmake.cxx | 35 ----
Source/cmake.h | 3 -
Tests/RunCMake/PolicyScope/NotClosed-stderr.txt | 2 +-
Tests/RunCMake/Syntax/FunctionUnmatched-stderr.txt | 6 +-
Tests/RunCMake/Syntax/MacroUnmatched-stderr.txt | 6 +-
Tests/RunCMake/find_package/PolicyPush-stderr.txt | 2 +-
Tests/RunCMake/while/EndMismatch-stderr.txt | 2 +-
Tests/RunCMake/while/EndMissing-stderr.txt | 6 +-
14 files changed, 268 insertions(+), 247 deletions(-)
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