summaryrefslogtreecommitdiff
path: root/lib/Support/MemoryBuffer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/Support/MemoryBuffer.cpp')
-rw-r--r--lib/Support/MemoryBuffer.cpp107
1 files changed, 54 insertions, 53 deletions
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index c395ce72b8..a8f3385de4 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -33,7 +33,6 @@
#include <io.h>
#endif
using namespace llvm;
-using std::error_code;
//===----------------------------------------------------------------------===//
// MemoryBuffer implementation itself.
@@ -157,9 +156,10 @@ MemoryBuffer *MemoryBuffer::getNewMemBuffer(size_t Size, StringRef BufferName) {
/// if the Filename is "-". If an error occurs, this returns null and fills
/// in *ErrStr with a reason. If stdin is empty, this API (unlike getSTDIN)
/// returns an empty buffer.
-error_code MemoryBuffer::getFileOrSTDIN(StringRef Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- int64_t FileSize) {
+std::error_code
+MemoryBuffer::getFileOrSTDIN(StringRef Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ int64_t FileSize) {
if (Filename == "-")
return getSTDIN(Result);
return getFile(Filename, Result, FileSize);
@@ -191,7 +191,7 @@ class MemoryBufferMMapFile : public MemoryBuffer {
public:
MemoryBufferMMapFile(bool RequiresNullTerminator, int FD, uint64_t Len,
- uint64_t Offset, error_code EC)
+ uint64_t Offset, std::error_code EC)
: MFR(FD, false, sys::fs::mapped_file_region::readonly,
getLegalMapSize(Len, Offset), getLegalMapOffset(Offset), EC) {
if (!EC) {
@@ -211,9 +211,9 @@ public:
};
}
-static error_code getMemoryBufferForStream(int FD,
- StringRef BufferName,
- std::unique_ptr<MemoryBuffer> &Result) {
+static std::error_code
+getMemoryBufferForStream(int FD, StringRef BufferName,
+ std::unique_ptr<MemoryBuffer> &Result) {
const ssize_t ChunkSize = 4096*4;
SmallString<ChunkSize> Buffer;
ssize_t ReadBytes;
@@ -223,26 +223,25 @@ static error_code getMemoryBufferForStream(int FD,
ReadBytes = read(FD, Buffer.end(), ChunkSize);
if (ReadBytes == -1) {
if (errno == EINTR) continue;
- return error_code(errno, std::generic_category());
+ return std::error_code(errno, std::generic_category());
}
Buffer.set_size(Buffer.size() + ReadBytes);
} while (ReadBytes != 0);
Result.reset(MemoryBuffer::getMemBufferCopy(Buffer, BufferName));
- return error_code();
+ return std::error_code();
}
-static error_code getFileAux(const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- int64_t FileSize,
- bool RequiresNullTerminator,
- bool IsVolatileSize);
-
-error_code MemoryBuffer::getFile(Twine Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- int64_t FileSize,
- bool RequiresNullTerminator,
- bool IsVolatileSize) {
+static std::error_code getFileAux(const char *Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ int64_t FileSize, bool RequiresNullTerminator,
+ bool IsVolatileSize);
+
+std::error_code MemoryBuffer::getFile(Twine Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ int64_t FileSize,
+ bool RequiresNullTerminator,
+ bool IsVolatileSize) {
// Ensure the path is null terminated.
SmallString<256> PathBuf;
StringRef NullTerminatedName = Filename.toNullTerminatedStringRef(PathBuf);
@@ -250,23 +249,25 @@ error_code MemoryBuffer::getFile(Twine Filename,
RequiresNullTerminator, IsVolatileSize);
}
-static error_code getOpenFileImpl(int FD, const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- uint64_t FileSize, uint64_t MapSize,
- int64_t Offset, bool RequiresNullTerminator,
- bool IsVolatileSize);
+static std::error_code getOpenFileImpl(int FD, const char *Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ uint64_t FileSize, uint64_t MapSize,
+ int64_t Offset,
+ bool RequiresNullTerminator,
+ bool IsVolatileSize);
-static error_code getFileAux(const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result, int64_t FileSize,
- bool RequiresNullTerminator,
- bool IsVolatileSize) {
+static std::error_code getFileAux(const char *Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ int64_t FileSize, bool RequiresNullTerminator,
+ bool IsVolatileSize) {
int FD;
- error_code EC = sys::fs::openFileForRead(Filename, FD);
+ std::error_code EC = sys::fs::openFileForRead(Filename, FD);
if (EC)
return EC;
- error_code ret = getOpenFileImpl(FD, Filename, Result, FileSize, FileSize, 0,
- RequiresNullTerminator, IsVolatileSize);
+ std::error_code ret =
+ getOpenFileImpl(FD, Filename, Result, FileSize, FileSize, 0,
+ RequiresNullTerminator, IsVolatileSize);
close(FD);
return ret;
}
@@ -319,11 +320,12 @@ static bool shouldUseMmap(int FD,
return true;
}
-static error_code getOpenFileImpl(int FD, const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- uint64_t FileSize, uint64_t MapSize,
- int64_t Offset, bool RequiresNullTerminator,
- bool IsVolatileSize) {
+static std::error_code getOpenFileImpl(int FD, const char *Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ uint64_t FileSize, uint64_t MapSize,
+ int64_t Offset,
+ bool RequiresNullTerminator,
+ bool IsVolatileSize) {
static int PageSize = sys::process::get_self()->page_size();
// Default is to map the full file.
@@ -332,7 +334,7 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
// file descriptor is cheaper than stat on a random path.
if (FileSize == uint64_t(-1)) {
sys::fs::file_status Status;
- error_code EC = sys::fs::status(FD, Status);
+ std::error_code EC = sys::fs::status(FD, Status);
if (EC)
return EC;
@@ -351,11 +353,11 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
if (shouldUseMmap(FD, FileSize, MapSize, Offset, RequiresNullTerminator,
PageSize, IsVolatileSize)) {
- error_code EC;
+ std::error_code EC;
Result.reset(new (NamedBufferAlloc(Filename)) MemoryBufferMMapFile(
RequiresNullTerminator, FD, MapSize, Offset, EC));
if (!EC)
- return error_code();
+ return std::error_code();
}
MemoryBuffer *Buf = MemoryBuffer::getNewUninitMemBuffer(MapSize, Filename);
@@ -384,7 +386,7 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
if (errno == EINTR)
continue;
// Error while reading.
- return error_code(errno, std::generic_category());
+ return std::error_code(errno, std::generic_category());
}
if (NumRead == 0) {
memset(BufPtr, 0, BytesLeft); // zero-initialize rest of the buffer.
@@ -395,22 +397,21 @@ static error_code getOpenFileImpl(int FD, const char *Filename,
}
Result.swap(SB);
- return error_code();
+ return std::error_code();
}
-error_code MemoryBuffer::getOpenFile(int FD, const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- uint64_t FileSize,
- bool RequiresNullTerminator,
- bool IsVolatileSize) {
+std::error_code MemoryBuffer::getOpenFile(int FD, const char *Filename,
+ std::unique_ptr<MemoryBuffer> &Result,
+ uint64_t FileSize,
+ bool RequiresNullTerminator,
+ bool IsVolatileSize) {
return getOpenFileImpl(FD, Filename, Result, FileSize, FileSize, 0,
RequiresNullTerminator, IsVolatileSize);
}
-error_code MemoryBuffer::getOpenFileSlice(int FD, const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- uint64_t MapSize, int64_t Offset,
- bool IsVolatileSize) {
+std::error_code MemoryBuffer::getOpenFileSlice(
+ int FD, const char *Filename, std::unique_ptr<MemoryBuffer> &Result,
+ uint64_t MapSize, int64_t Offset, bool IsVolatileSize) {
return getOpenFileImpl(FD, Filename, Result, -1, MapSize, Offset, false,
IsVolatileSize);
}
@@ -419,7 +420,7 @@ error_code MemoryBuffer::getOpenFileSlice(int FD, const char *Filename,
// MemoryBuffer::getSTDIN implementation.
//===----------------------------------------------------------------------===//
-error_code MemoryBuffer::getSTDIN(std::unique_ptr<MemoryBuffer> &Result) {
+std::error_code MemoryBuffer::getSTDIN(std::unique_ptr<MemoryBuffer> &Result) {
// Read in all of the data from stdin, we cannot mmap stdin.
//
// FIXME: That isn't necessarily true, we should try to mmap stdin and
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 18:55:16 +0000