a430bdb132
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12139 6f19259b-4bc3-4df7-8a09-765794883524
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/** @file
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Implementation and Platform specific portion of <signal.h>.
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Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _SYS_SIGNAL_H
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#define _SYS_SIGNAL_H
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#include <sys/EfiCdefs.h>
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#include <machine/signal.h>
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/** The actual (default) signal numbers are assigned using an anonymous enum
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so that the compiler can do the work of assigning values. This helps
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ensure that the developer should never have to renumber the signals or
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figure out what number to assign to a new signal.
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Properly constructed programs will NEVER depend upon signal numbers being
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in a particular order or having a particular value. All that is guaranteed
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is that each signal number is distinct, positive, and non-zero.
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**/
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enum {
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__SigInt = 1,
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__SigIll,
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__SigAbrt,
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__SigFpe,
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__SigSegv,
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__SigTerm,
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__SigBreak,
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__SigAlrm,
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__SigVtAlrm,
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__SigProf,
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__SigUsr1,
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__SigUsr2,
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__SigWinch,
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__SigPipe,
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__SigQuit,
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__Sig_Last
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};
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/** The type of a signal handler function. **/
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typedef void __sighandler_t(int);
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__BEGIN_DECLS
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/** The signal function associates a "signal handler" with a signal number.
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For historical reasons; programs expect signal to be declared
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in <sys/signal.h>.
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@param[in] sig Signal number that function is to be associated with.
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@param[in] function The "handler" function to be associated with signal sig.
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@return If the request can be honored, the signal function returns the
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value of func for the most recent successful call to signal for
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the specified signal sig. Otherwise, a value of SIG_ERR is
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returned and a positive value is stored in errno.
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*/
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__sighandler_t *signal(int sig, __sighandler_t *func);
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__END_DECLS
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#endif /* _SYS_SIGNAL_H */
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