diff options
Diffstat (limited to 'llvm/lib/Support/raw_ostream.cpp')
| -rw-r--r-- | llvm/lib/Support/raw_ostream.cpp | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp index 92b15f14c62f..a4fc605019c2 100644 --- a/llvm/lib/Support/raw_ostream.cpp +++ b/llvm/lib/Support/raw_ostream.cpp @@ -56,6 +56,7 @@ #ifdef _WIN32 #include "llvm/Support/ConvertUTF.h" +#include "llvm/Support/Signals.h" #include "llvm/Support/Windows/WindowsSupport.h" #endif @@ -83,8 +84,15 @@ raw_ostream::~raw_ostream() { } size_t raw_ostream::preferred_buffer_size() const { +#ifdef _WIN32 + // On Windows BUFSIZ is only 512 which results in more calls to write. This + // overhead can cause significant performance degradation. Therefore use a + // better default. + return (16 * 1024); +#else // BUFSIZ is intended to be a reasonable default. return BUFSIZ; +#endif } void raw_ostream::SetBuffered() { @@ -775,6 +783,15 @@ void raw_fd_ostream::write_impl(const char *Ptr, size_t Size) { ) continue; +#ifdef _WIN32 + // Windows equivalents of SIGPIPE/EPIPE. + DWORD WinLastError = GetLastError(); + if (WinLastError == ERROR_BROKEN_PIPE || + (WinLastError == ERROR_NO_DATA && errno == EINVAL)) { + llvm::sys::CallOneShotPipeSignalHandler(); + errno = EPIPE; + } +#endif // Otherwise it's a non-recoverable error. Note it and quit. error_detected(std::error_code(errno, std::generic_category())); break; @@ -802,8 +819,6 @@ uint64_t raw_fd_ostream::seek(uint64_t off) { flush(); #ifdef _WIN32 pos = ::_lseeki64(FD, off, SEEK_SET); -#elif defined(HAVE_LSEEK64) - pos = ::lseek64(FD, off, SEEK_SET); #else pos = ::lseek(FD, off, SEEK_SET); #endif @@ -992,7 +1007,7 @@ Error llvm::writeToOutput(StringRef OutputFileName, return Write(Out); } - unsigned Mode = sys::fs::all_read | sys::fs::all_write | sys::fs::all_exe; + unsigned Mode = sys::fs::all_read | sys::fs::all_write; Expected<sys::fs::TempFile> Temp = sys::fs::TempFile::create(OutputFileName + ".temp-stream-%%%%%%", Mode); if (!Temp) |