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* child_info.h (cchildren): New struct.

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(child_info_spawn::nchildren): Rename from nprocs.
(child_info_spawn::children): Change type to cchildren for more bookkeeping
possibilities.
(child_info_spawn::child_info_spawn): Clear nchildren.
(child_info_spawn::record_children): Declare new function.
(child_info_spawn::reattach_children): Ditto.
* dcrt0.cc (child_info_spawn::handle_spawn): Call reattach_children to gather
list of processes we are potentially waiting for.
* pinfo.h (pinfo::pinfo): Make sure that rd_proc_pipe is always cleared.
(pinfo::reattach): New function.
* sigproc.cc: Move pinfo.h earlier so that it can be used in sigproc.h.
(get_proc_lock): Don't bother with a lock during DLL initialization.
(proc_subproc): Handle PROC_REATTACH_CHILD.
(proc_terminate): Orphan children only when we are not an execed process or
when the pid is about to be occupied by a non-cygwin process.
(child_info_spawn::record_children): Define new function.
(child_info_spawn::reattach_children): Ditto.
* sigproc.h (procstuff): Define PROC_REATTACH_CHILD and renumber other
elements.
* spawn.cc (spawn_guts): Record any to-be-waited-for subprocesses if about to
exec a cygwin process.
* sigproc.cc (sig_send): Fix harmless transposition of fifth and six arguments
to DuplicateHandle().
(child_info::child_info): Ditto.
* globals.cc (hExeced): Make NO_COPY.
This commit is contained in:
Christopher Faylor
2011-10-26 19:42:39 +00:00
parent be2280986d
commit b79b15e9e3
9 changed files with 129 additions and 27 deletions
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28
winsup/cygwin/pinfo.cc
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@@ -971,19 +971,25 @@ _pinfo::dup_proc_pipe (HANDLE hProcess)
int
pinfo::wait ()
{
/* FIXME: execed processes should be able to wait for pids that were started
by the process which execed them. */
if (!CreatePipe (&rd_proc_pipe, &((*this)->wr_proc_pipe), &sec_none_nih, 16))
/* If rd_proc_pipe that means we're in an execed process which already has
grabbed the read end of the pipe from the previous cygwin process running
with this pid. */
if (!rd_proc_pipe)
{
system_printf ("Couldn't create pipe tracker for pid %d, %E",
(*this)->pid);
return 0;
}
/* FIXME: execed processes should be able to wait for pids that were started
by the process which execed them. */
if (!CreatePipe (&rd_proc_pipe, &((*this)->wr_proc_pipe), &sec_none_nih, 16))
{
system_printf ("Couldn't create pipe tracker for pid %d, %E",
(*this)->pid);
return 0;
}
if (!(*this)->dup_proc_pipe (hProcess))
{
system_printf ("Couldn't duplicate pipe topid %d(%p), %E", (*this)->pid, hProcess);
return 0;
if (!(*this)->dup_proc_pipe (hProcess))
{
system_printf ("Couldn't duplicate pipe topid %d(%p), %E", (*this)->pid, hProcess);
return 0;
}
}
preserve (); /* Preserve the shared memory associated with the pinfo */