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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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9
winsup/cygwin/pinfo.h
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@@ -147,8 +147,8 @@ public:
bool waiter_ready;
class cygthread *wait_thread;
void init (pid_t, DWORD, HANDLE) __attribute__ ((regparm(3)));
pinfo (): procinfo (NULL) {}
pinfo (_pinfo *x): procinfo (x), hProcess (NULL) {}
pinfo (): procinfo (NULL), rd_proc_pipe (NULL) {}
pinfo (_pinfo *x): procinfo (x), rd_proc_pipe (NULL), hProcess (NULL) {}
pinfo (pid_t n) : rd_proc_pipe (NULL), hProcess (NULL) {init (n, 0, NULL);}
pinfo (pid_t n, DWORD flag) : rd_proc_pipe (NULL), hProcess (NULL), waiter_ready (0), wait_thread (NULL) {init (n, flag, NULL);}
void thisproc (HANDLE) __attribute__ ((regparm (2)));
@@ -175,6 +175,11 @@ public:
#ifndef _SIGPROC_H
int remember () {system_printf ("remember is not here"); return 0;}
#else
void reattach ()
{
proc_subproc (PROC_REATTACH_CHILD, (DWORD) this);
destroy = false;
}
int remember (bool detach)
{
int res = proc_subproc (detach ? PROC_DETACHED_CHILD : PROC_ADDCHILD,