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Throughout use myself->ppid_handle rather than parent_alive.

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* child_info.h (child_info): Eliminate parent_alive.
* dcrt0.cc (dll_crt0_1): Call fork_init for debugging pid creation.
* fork.cc (fork_child): Reflect change to fixup_mmaps_after_fork arguments.
(slow_pid_reuse): New function to grab last 'n' pids to prevent pid reuse.
(fork_parent): Move last_fork_proc into slow_pid_reuse.  Handle fork_pids
debugging.  Eliminate unnecessary call to set_child_mmap_ptr.
(fork_init): New debugging function.
* mmap.cc (fixup_mmaps_after_fork): Renamed from recreate_mmaps_after_fork.
Rely on copied data after a fork.
(set_child_mmap_ptr): Eliminate.
* pinfo.h (_pinfo): Eliminate parent_alive, mmap_ptr and reflect above changes.
* spawn.cc (spawn_guts): Eliminate vestiges of "old way" of sending new hProc
to parent process.
This commit is contained in:
Christopher Faylor
2000-11-15 06:27:48 +00:00
parent fb0a875733
commit 84aeff4126
13 changed files with 144 additions and 119 deletions
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39
winsup/cygwin/spawn.cc
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@@ -754,7 +754,7 @@ skip_arg_parsing:
if (mode == _P_OVERLAY)
{
res |= EXIT_REPARENTING;
if (!parent_alive)
if (!my_parent_is_alive ())
{
nwait = 1;
sigproc_terminate ();
@@ -789,32 +789,19 @@ skip_arg_parsing:
* EXIT_REPARENTING status. Wait() syscall in parent will then wait
* for newly created child.
*/
pinfo parent (myself->ppid);
if (!parent)
/* nothing */;
else
HANDLE oldh = myself->hProcess;
HANDLE h = myself->ppid_handle;
sigproc_printf ("parent handle %p", h);
int rc = DuplicateHandle (hMainProc, pi.hProcess, h, &myself->hProcess,
0, FALSE, DUPLICATE_SAME_ACCESS);
sigproc_printf ("%d = DuplicateHandle, oldh %p, newh %p",
rc, oldh, myself->hProcess);
if (!rc && my_parent_is_alive ())
{
int rc = 0;
HANDLE oldh = myself->hProcess;
HANDLE h = myself->ppid_handle;
sigproc_printf ("parent handle %p, pid %d", h, parent->dwProcessId);
if (h == NULL && GetLastError () == ERROR_INVALID_PARAMETER)
rc = 0;
else if (h)
{
rc = DuplicateHandle (hMainProc, pi.hProcess,
h, &myself->hProcess, 0, FALSE,
DUPLICATE_SAME_ACCESS);
sigproc_printf ("%d = DuplicateHandle, oldh %p, newh %p",
rc, oldh, myself->hProcess);
}
if (!rc)
{
system_printf ("Reparent failed, parent handle %p, %E", h);
system_printf ("my dwProcessId %d, myself->dwProcessId %d",
GetCurrentProcessId(), myself->dwProcessId);
system_printf ("old hProcess %p, hProcess %p", oldh, myself->hProcess);
}
system_printf ("Reparent failed, parent handle %p, %E", h);
system_printf ("my dwProcessId %d, myself->dwProcessId %d",
GetCurrentProcessId(), myself->dwProcessId);
system_printf ("old hProcess %p, hProcess %p", oldh, myself->hProcess);
}
}