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* signal.cc (_pinfo::kill): Return success on kill(0) only if pid exists or is 

in PID_EXITED state.  Report pid 0 when pid does not exist rather than pid -1.
Make debug output reflect actual function call.
* sigproc.cc (stopped_or_terminated): Set process state to reaped when we've
finished waiting for it.
* include/sys/cygwin.h (PID_REAPED): New enum.
This commit is contained in:
Christopher Faylor 2011-05-05 00:31:22 +00:00
parent 942945956c
commit 5069a2b0d9
4 changed files with 16 additions and 5 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2011-05-04 Christopher Faylor <me.cygwin2011@cgf.cx>
* signal.cc (_pinfo::kill): Return success on kill(0) only if pid
exists or is in PID_EXITED state. Report pid 0 when pid does not exist
rather than pid -1. Make debug output reflect actual function call.
* sigproc.cc (stopped_or_terminated): Set process state to reaped when
we've finished waiting for it.
* include/sys/cygwin.h (PID_REAPED): New enum.
2011-05-04 Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
* cygwin.din (psiginfo): Export.

3
winsup/cygwin/include/sys/cygwin.h
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@ -168,7 +168,8 @@ enum
PID_ALLPIDS = 0x02000, /* used by pinfo scanner */
PID_EXECED = 0x04000, /* redirect to original pid info block */
PID_NOREDIR = 0x08000, /* don't redirect if execed */
PID_EXITED = 0x80000000 /* Free entry. */
PID_EXITED = 0x40000000, /* Free entry. */
PID_REAPED = 0x80000000 /* Reaped */
};
#ifdef WINVER

8
winsup/cygwin/signal.cc
View File

@ -250,7 +250,7 @@ _pinfo::kill (siginfo_t& si)
}
this_pid = pid;
}
else if (si.si_signo == 0 && this)
else if (si.si_signo == 0 && this && process_state == PID_EXITED)
{
this_process_state = process_state;
this_pid = pid;
@ -260,12 +260,12 @@ _pinfo::kill (siginfo_t& si)
{
set_errno (ESRCH);
this_process_state = 0;
this_pid = -1;
this_pid = 0;
res = -1;
}
syscall_printf ("%d = _pinfo::kill (%d, %d), process_state %p", res, this_pid,
si.si_signo, this_process_state);
syscall_printf ("%d = _pinfo::kill (%d), pid %d, process_state %p", res,
si.si_signo, this_pid, this_process_state);
return res;
}

1
winsup/cygwin/sigproc.cc
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@ -1041,6 +1041,7 @@ stopped_or_terminated (waitq *parent_w, _pinfo *child)
}
else
{
child->process_state = PID_REAPED;
w->status = (__uint16_t) child->exitcode;
add_rusage (&myself->rusage_children, &child->rusage_children);