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Archive: Replace all internal uses of PathV1 with PathV2. The external API still uses PathV1.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123551 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2011-01-15 21:43:37 +00:00
parent 36852d3681
commit 770772e831
2 changed files with 42 additions and 41 deletions
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5
include/llvm/Bitcode/Archive.h
View File

@ -25,6 +25,7 @@
namespace llvm {
class MemoryBuffer;
class raw_ostream;
// Forward declare classes
class Module; // From VMCore
@ -482,7 +483,7 @@ class Archive {
bool loadSymbolTable(std::string* ErrMessage);
/// @brief Write the symbol table to an ofstream.
void writeSymbolTable(std::ofstream& ARFile);
void writeSymbolTable(raw_ostream& ARFile);
/// Writes one ArchiveMember to an ofstream. If an error occurs, returns
/// false, otherwise true. If an error occurs and error is non-null then
@ -491,7 +492,7 @@ class Archive {
/// @returns true Writing member failed, \p error set to error message
bool writeMember(
const ArchiveMember& member, ///< The member to be written
std::ofstream& ARFile, ///< The file to write member onto
raw_ostream& ARFile, ///< The file to write member onto
bool CreateSymbolTable, ///< Should symbol table be created?
bool TruncateNames, ///< Should names be truncated to 11 chars?
bool ShouldCompress, ///< Should the member be compressed?

78
lib/Archive/ArchiveWriter.cpp
View File

@ -18,6 +18,7 @@
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/system_error.h"
#include <fstream>
@ -27,7 +28,7 @@ using namespace llvm;
// Write an integer using variable bit rate encoding. This saves a few bytes
// per entry in the symbol table.
static inline void writeInteger(unsigned num, std::ofstream& ARFile) {
static inline void writeInteger(unsigned num, raw_ostream& ARFile) {
while (1) {
if (num < 0x80) { // done?
ARFile << (unsigned char)num;
@ -201,14 +202,14 @@ Archive::addFileBefore(const sys::Path& filePath, iterator where,
bool
Archive::writeMember(
const ArchiveMember& member,
std::ofstream& ARFile,
raw_ostream& ARFile,
bool CreateSymbolTable,
bool TruncateNames,
bool ShouldCompress,
std::string* ErrMsg
) {
unsigned filepos = ARFile.tellp();
unsigned filepos = ARFile.tell();
filepos -= 8;
// Get the data and its size either from the
@ -281,7 +282,7 @@ Archive::writeMember(
ARFile.write(data,fSize);
// Make sure the member is an even length
if ((ARFile.tellp() & 1) == 1)
if ((ARFile.tell() & 1) == 1)
ARFile << ARFILE_PAD;
// Close the mapped file if it was opened
@ -291,7 +292,7 @@ Archive::writeMember(
// Write out the LLVM symbol table as an archive member to the file.
void
Archive::writeSymbolTable(std::ofstream& ARFile) {
Archive::writeSymbolTable(raw_ostream& ARFile) {
// Construct the symbol table's header
ArchiveMemberHeader Hdr;
@ -315,7 +316,7 @@ Archive::writeSymbolTable(std::ofstream& ARFile) {
#ifndef NDEBUG
// Save the starting position of the symbol tables data content.
unsigned startpos = ARFile.tellp();
unsigned startpos = ARFile.tell();
#endif
// Write out the symbols sequentially
@ -332,7 +333,7 @@ Archive::writeSymbolTable(std::ofstream& ARFile) {
#ifndef NDEBUG
// Now that we're done with the symbol table, get the ending file position
unsigned endpos = ARFile.tellp();
unsigned endpos = ARFile.tell();
#endif
// Make sure that the amount we wrote is what we pre-computed. This is
@ -361,26 +362,20 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
}
// Create a temporary file to store the archive in
sys::Path TmpArchive = archPath;
if (TmpArchive.createTemporaryFileOnDisk(ErrMsg))
return true;
// Make sure the temporary gets removed if we crash
sys::RemoveFileOnSignal(TmpArchive);
// Create archive file for output.
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
std::ofstream ArchiveFile(TmpArchive.c_str(), io_mode);
// Check for errors opening or creating archive file.
if (!ArchiveFile.is_open() || ArchiveFile.bad()) {
TmpArchive.eraseFromDisk();
if (ErrMsg)
*ErrMsg = "Error opening archive file: " + archPath.str();
SmallString<128> TempArchivePath;
int ArchFD;
if (error_code ec = sys::fs::unique_file("%%-%%-%%-%%" + archPath.str(),
ArchFD, TempArchivePath)) {
if (ErrMsg) *ErrMsg = ec.message();
return true;
}
// Make sure the temporary gets removed if we crash
sys::RemoveFileOnSignal(sys::Path(TempArchivePath.str()));
// Create archive file for output.
raw_fd_ostream ArchiveFile(ArchFD, true);
// If we're creating a symbol table, reset it now
if (CreateSymbolTable) {
symTabSize = 0;
@ -395,8 +390,9 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
for (MembersList::iterator I = begin(), E = end(); I != E; ++I) {
if (writeMember(*I, ArchiveFile, CreateSymbolTable,
TruncateNames, Compress, ErrMsg)) {
TmpArchive.eraseFromDisk();
ArchiveFile.close();
bool existed;
sys::fs::remove(TempArchivePath.str(), existed);
return true;
}
}
@ -411,12 +407,12 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
// ensure compatibility with other archivers we need to put the symbol
// table first in the file. Unfortunately, this means mapping the file
// we just wrote back in and copying it to the destination file.
sys::Path FinalFilePath = archPath;
SmallString<128> TempArchiveWithSymbolTablePath;
// Map in the archive we just wrote.
{
OwningPtr<MemoryBuffer> arch;
if (error_code ec = MemoryBuffer::getFile(TmpArchive.c_str(), arch)) {
if (error_code ec = MemoryBuffer::getFile(TempArchivePath.c_str(), arch)) {
if (ErrMsg)
*ErrMsg = ec.message();
return true;
@ -425,17 +421,14 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
// Open another temporary file in order to avoid invalidating the
// mmapped data
if (FinalFilePath.createTemporaryFileOnDisk(ErrMsg))
return true;
sys::RemoveFileOnSignal(FinalFilePath);
std::ofstream FinalFile(FinalFilePath.c_str(), io_mode);
if (!FinalFile.is_open() || FinalFile.bad()) {
TmpArchive.eraseFromDisk();
if (ErrMsg)
*ErrMsg = "Error opening archive file: " + FinalFilePath.str();
if (error_code ec = sys::fs::unique_file("%%-%%-%%-%%" + archPath.str(),
ArchFD, TempArchiveWithSymbolTablePath)) {
if (ErrMsg) *ErrMsg = ec.message();
return true;
}
sys::RemoveFileOnSignal(sys::Path(TempArchiveWithSymbolTablePath.str()));
raw_fd_ostream FinalFile(ArchFD, true);
// Write the file magic number
FinalFile << ARFILE_MAGIC;
@ -448,7 +441,8 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
if (foreignST) {
if (writeMember(*foreignST, FinalFile, false, false, false, ErrMsg)) {
FinalFile.close();
TmpArchive.eraseFromDisk();
bool existed;
sys::fs::remove(TempArchiveWithSymbolTablePath.str(), existed);
return true;
}
}
@ -466,8 +460,11 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
} // free arch.
// Move the final file over top of TmpArchive
if (FinalFilePath.renamePathOnDisk(TmpArchive, ErrMsg))
if (error_code ec = sys::fs::rename(TempArchiveWithSymbolTablePath.str(),
TempArchivePath.str())) {
if (ErrMsg) *ErrMsg = ec.message();
return true;
}
}
// Before we replace the actual archive, we need to forget all the
@ -475,8 +472,11 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
// this because we cannot replace an open file on Windows.
cleanUpMemory();
if (TmpArchive.renamePathOnDisk(archPath, ErrMsg))
if (error_code ec = sys::fs::rename(TempArchivePath.str(),
archPath.str())) {
if (ErrMsg) *ErrMsg = ec.message();
return true;
}
// Set correct read and write permissions after temporary file is moved
// to final destination path.