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Diffstat (limited to 'Build/source/extra/xz-4.999.9beta/src/xz/signals.h')
-rw-r--r-- | Build/source/extra/xz-4.999.9beta/src/xz/signals.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Build/source/extra/xz-4.999.9beta/src/xz/signals.h b/Build/source/extra/xz-4.999.9beta/src/xz/signals.h new file mode 100644 index 00000000000..48945b22403 --- /dev/null +++ b/Build/source/extra/xz-4.999.9beta/src/xz/signals.h @@ -0,0 +1,44 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file signals.h +/// \brief Handling signals to abort operation +// +// Author: Lasse Collin +// +// This file has been put into the public domain. +// You can do whatever you want with this file. +// +/////////////////////////////////////////////////////////////////////////////// + +/// If this is true, we will clean up the possibly incomplete output file, +/// return to main() as soon as practical. That is, the code needs to poll +/// this variable in various places. +extern volatile sig_atomic_t user_abort; + + +/// Initialize the signal handler, which will set user_abort to true when +/// user e.g. presses C-c. +extern void signals_init(void); + + +#ifndef _WIN32 + +/// Block the signals which don't have SA_RESTART and which would just set +/// user_abort to true. This is handy when we don't want to handle EINTR +/// and don't want SA_RESTART either. +extern void signals_block(void); + +/// Unblock the signals blocked by signals_block(). +extern void signals_unblock(void); + +/// If user has sent us a signal earlier to terminate the process, +/// re-raise that signal to actually terminate the process. +extern void signals_exit(void); + +#else + +#define signals_block() do { } while (0) +#define signals_unblock() do { } while (0) +#define signals_exit() do { } while (0) + +#endif |