diff options
Diffstat (limited to 'include/llvm/Support/Process.h')
| -rw-r--r-- | include/llvm/Support/Process.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/llvm/Support/Process.h b/include/llvm/Support/Process.h index 30973de..8616679 100644 --- a/include/llvm/Support/Process.h +++ b/include/llvm/Support/Process.h @@ -186,6 +186,21 @@ public: ArrayRef<const char *> ArgsFromMain, SpecificBumpPtrAllocator<char> &ArgAllocator); + // This functions ensures that the standard file descriptors (input, output, + // and error) are properly mapped to a file descriptor before we use any of + // them. This should only be called by standalone programs, library + // components should not call this. + static std::error_code FixupStandardFileDescriptors(); + + // This function safely closes a file descriptor. It is not safe to retry + // close(2) when it returns with errno equivalent to EINTR; this is because + // *nixen cannot agree if the file descriptor is, in fact, closed when this + // occurs. + // + // N.B. Some operating systems, due to thread cancellation, cannot properly + // guarantee that it will or will not be closed one way or the other! + static std::error_code SafelyCloseFileDescriptor(int FD); + /// This function determines if the standard input is connected directly /// to a user's input (keyboard probably), rather than coming from a file /// or pipe. |