Author: ibiryukov
Date: Thu Dec 21 06:04:39 2017
New Revision: 321266
URL: http://llvm.org/viewvc/llvm-project?rev=321266&view=rev
Log:
Added helper to get size of PrecompiledPreamble
Modified:
cfe/trunk/include/clang/Frontend/PrecompiledPreamble.h
cfe/trunk/lib/Frontend/PrecompiledPreamble.cpp
Modified: cfe/trunk/include/clang/Frontend/PrecompiledPreamble.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/PrecompiledPreamble.h?rev=321266&r1=321265&r2=321266&view=diff
==============================================================================
--- cfe/trunk/include/clang/Frontend/PrecompiledPreamble.h (original)
+++ cfe/trunk/include/clang/Frontend/PrecompiledPreamble.h Thu Dec 21 06:04:39
2017
@@ -19,6 +19,7 @@
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/Support/AlignOf.h"
#include "llvm/Support/MD5.h"
+#include <cstddef>
#include <memory>
#include <system_error>
#include <type_traits>
@@ -89,6 +90,11 @@ public:
/// PreambleBounds used to build the preamble.
PreambleBounds getBounds() const;
+ /// Returns the size, in bytes, that preamble takes on disk or in memory.
+ /// For on-disk preambles returns 0 if filesystem operations fail. Intended
to
+ /// be used for logging and debugging purposes only.
+ std::size_t getSize() const;
+
/// Check whether PrecompiledPreamble can be reused for the new contents(\p
/// MainFileBuffer) of the main file.
bool CanReuse(const CompilerInvocation &Invocation,
@@ -246,7 +252,8 @@ public:
/// Called before FrontendAction::BeginSourceFile.
/// Can be used to store references to various CompilerInstance fields
- /// (e.g. SourceManager) that may be interesting to the consumers of other
callbacks.
+ /// (e.g. SourceManager) that may be interesting to the consumers of other
+ /// callbacks.
virtual void BeforeExecute(CompilerInstance &CI);
/// Called after FrontendAction::Execute(), but before
/// FrontendAction::EndSourceFile(). Can be used to transfer ownership of
Modified: cfe/trunk/lib/Frontend/PrecompiledPreamble.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/PrecompiledPreamble.cpp?rev=321266&r1=321265&r2=321266&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/PrecompiledPreamble.cpp (original)
+++ cfe/trunk/lib/Frontend/PrecompiledPreamble.cpp Thu Dec 21 06:04:39 2017
@@ -30,7 +30,7 @@
#include "llvm/Support/Mutex.h"
#include "llvm/Support/MutexGuard.h"
#include "llvm/Support/Process.h"
-
+#include <limits>
#include <utility>
using namespace clang;
@@ -381,6 +381,27 @@ PreambleBounds PrecompiledPreamble::getB
return PreambleBounds(PreambleBytes.size(), PreambleEndsAtStartOfLine);
}
+std::size_t PrecompiledPreamble::getSize() const {
+ switch (Storage.getKind()) {
+ case PCHStorage::Kind::Empty:
+ assert(false && "Calling getSize() on invalid PrecompiledPreamble. "
+ "Was it std::moved?");
+ return 0;
+ case PCHStorage::Kind::InMemory:
+ return Storage.asMemory().Data.size();
+ case PCHStorage::Kind::TempFile: {
+ uint64_t Result;
+ if (llvm::sys::fs::file_size(Storage.asFile().getFilePath(), Result))
+ return 0;
+
+ assert(Result <= std::numeric_limits<std::size_t>::max() &&
+ "file size did not fit into size_t");
+ return Result;
+ }
+ }
+ llvm_unreachable("Unhandled storage kind");
+}
+
bool PrecompiledPreamble::CanReuse(const CompilerInvocation &Invocation,
const llvm::MemoryBuffer *MainFileBuffer,
PreambleBounds Bounds,
@@ -506,8 +527,8 @@ PrecompiledPreamble::TempPCHFile::create
StringRef Suffix) {
llvm::SmallString<64> File;
// Using a version of createTemporaryFile with a file descriptor guarantees
- // that we would never get a race condition in a multi-threaded setting
(i.e.,
- // multiple threads getting the same temporary path).
+ // that we would never get a race condition in a multi-threaded setting
+ // (i.e., multiple threads getting the same temporary path).
int FD;
auto EC = llvm::sys::fs::createTemporaryFile(Prefix, Suffix, FD, File);
if (EC)
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