/[guile]/guile/guile-core/doc/ref/posix.texi
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revision 1.11 by ossau, Thu Oct 3 22:16:17 2002 UTC revision 1.12 by mvo, Mon Oct 7 16:34:28 2002 UTC
# Line 1443  or user, as indicated by @var{which} and Line 1443  or user, as indicated by @var{which} and
1443  is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}  is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}
1444  or @code{PRIO_USER}, and @var{who} is interpreted relative to  or @code{PRIO_USER}, and @var{who} is interpreted relative to
1445  @var{which} (a process identifier for @code{PRIO_PROCESS},  @var{which} (a process identifier for @code{PRIO_PROCESS},
1446  process group identifier for @code{PRIO_PGRP}, and a user  hhhhprocess group identifier for @code{PRIO_PGRP}, and a user
1447  identifier for @code{PRIO_USER}.  A zero value of @var{who}  identifier for @code{PRIO_USER}.  A zero value of @var{who}
1448  denotes the current process, process group, or user.  denotes the current process, process group, or user.
1449  @var{prio} is a value in the range -20 and 20, the default  @var{prio} is a value in the range -20 and 20, the default
# Line 1510  Sends a specified signal @var{sig} to th Line 1510  Sends a specified signal @var{sig} to th
1510  @var{sig} is as described for the kill procedure.  @var{sig} is as described for the kill procedure.
1511  @end deffn  @end deffn
1512    
1513  @deffn {Scheme Procedure} sigaction signum [handler [flags]]  @deffn {Scheme Procedure} sigaction signum [handler [flags [thread]]]
1514  @deffnx {C Function} scm_sigaction (signum, handler, flags)  @deffnx {C Function} scm_sigaction (signum, handler, flags)
1515    @deffnx {C Function} scm_sigaction_for_thread (signum, handler, flags, thread)
1516  Install or report the signal handler for a specified signal.  Install or report the signal handler for a specified signal.
1517    
1518  @var{signum} is the signal number, which can be specified using the value  @var{signum} is the signal number, which can be specified using the value
1519  of variables such as @code{SIGINT}.  of variables such as @code{SIGINT}.
1520    
1521  If @var{action} is omitted, @code{sigaction} returns a pair: the  If @var{handler} is omitted, @code{sigaction} returns a pair: the
1522  CAR is the current  CAR is the current
1523  signal hander, which will be either an integer with the value @code{SIG_DFL}  signal hander, which will be either an integer with the value @code{SIG_DFL}
1524  (default action) or @code{SIG_IGN} (ignore), or the Scheme procedure which  (default action) or @code{SIG_IGN} (ignore), or the Scheme procedure which
1525  handles the signal, or @code{#f} if a non-Scheme procedure handles the  handles the signal, or @code{#f} if a non-Scheme procedure handles the
1526  signal.  The CDR contains the current @code{sigaction} flags for the handler.  signal.  The CDR contains the current @code{sigaction} flags for the handler.
1527    
1528  If @var{action} is provided, it is installed as the new handler for  If @var{handler} is provided, it is installed as the new handler for
1529  @var{signum}.  @var{action} can be a Scheme procedure taking one  @var{signum}.  The parameter @var{handler} can be a Scheme procedure
1530  argument, or the value of @code{SIG_DFL} (default action) or  taking one argument, or the value of @code{SIG_DFL} (default action) or
1531  @code{SIG_IGN} (ignore), or @code{#f} to restore whatever signal handler  @code{SIG_IGN} (ignore), or @code{#f} to restore whatever signal handler
1532  was installed before @code{sigaction} was first used.  Flags can  was installed before @code{sigaction} was first used.  When a scheme
1533  optionally be specified for the new handler (@code{SA_RESTART} will  procedure has been specified, that procedure will run in the given
1534  always be added if it's available and the system is using restartable  @var{thread}.  When no thread has been given, the thread that made this
1535  system calls.)  The return value is a pair with information about the  call to @code{sigaction} is used.
1536  old handler as described above.  
1537    Flags can optionally be specified for the new handler (@code{SA_RESTART}
1538    will always be added if it's available and the system is using
1539    restartable system calls.)  The return value is a pair with information
1540    about the old handler as described above.
1541    
1542  This interface does not provide access to the "signal blocking"  This interface does not provide access to the "signal blocking"
1543  facility.  Maybe this is not needed, since the thread support may  facility.  Maybe this is not needed, since the thread support may

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