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Diffstat (limited to 'src/common/signal.h')
-rw-r--r-- | src/common/signal.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/common/signal.h b/src/common/signal.h new file mode 100644 index 000000000..4b323de47 --- /dev/null +++ b/src/common/signal.h @@ -0,0 +1,42 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2011 New Dream Network + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_COMMON_SIGNAL_H +#define CEPH_COMMON_SIGNAL_H + +#include <signal.h> +#include <string> + +// Returns a string showing the set of blocked signals for the calling thread. +// Other threads may have a different set (this is per-thread thing). +extern std::string signal_mask_to_str(); + +// Block a list of signals. If siglist == NULL, blocks all signals. +// If not, the list is terminated with a 0 element. +// +// On success, stores the old set of blocked signals in +// old_sigset. On failure, stores an invalid set of blocked signals in +// old_sigset. +extern void block_signals(const int *siglist, sigset_t *old_sigset); + +// Restore the set of blocked signals. Will not restore an invalid set of +// blocked signals. +extern void restore_sigset(const sigset_t *old_sigset); + +// Unblock all signals. On success, stores the old set of blocked signals in +// old_sigset. On failure, stores an invalid set of blocked signals in +// old_sigset. +extern void unblock_all_signals(sigset_t *old_sigset); + +#endif |