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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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18
winsup/cygwin/sigproc.cc
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@@ -128,14 +128,14 @@ BOOL __stdcall
my_parent_is_alive ()
{
DWORD res;
if (!parent_alive)
if (!myself->ppid_handle)
{
debug_printf ("No parent_alive mutex");
debug_printf ("No myself->ppid_handle");
res = FALSE;
}
else
for (int i = 0; i < 2; i++)
switch (res = WaitForSingleObject (parent_alive, 0))
switch (res = WaitForSingleObject (myself->ppid_handle, 0))
{
case WAIT_OBJECT_0:
debug_printf ("parent dead.");
@@ -149,8 +149,8 @@ my_parent_is_alive ()
DWORD werr = GetLastError ();
if (werr == ERROR_INVALID_HANDLE && i == 0)
continue;
system_printf ("WFSO for parent_alive(%p) failed, error %d",
parent_alive, werr);
system_printf ("WFSO for myself->ppid_handle(%p) failed, error %d",
myself->ppid_handle, werr);
res = FALSE;
goto out;
}
@@ -304,6 +304,8 @@ proc_subproc (DWORD what, DWORD val)
hchildren[val] = hchildren[nchildren];
pchildren[val] = pchildren[nchildren];
}
/* Don't scan the wait queue yet. Caller will send SIGCHLD to this process.
This will cause an eventual scan of waiters. */
break;
/* A child is in the stopped state. Scan wait() queue to see if anyone
@@ -816,7 +818,6 @@ subproc_init (void)
void __stdcall
init_child_info (DWORD chtype, child_info *ch, pid_t pid, HANDLE subproc_ready)
{
subproc_init ();
memset (ch, 0, sizeof *ch);
ch->cb = sizeof *ch;
ch->type = chtype;
@@ -825,11 +826,6 @@ init_child_info (DWORD chtype, child_info *ch, pid_t pid, HANDLE subproc_ready)
ch->console_h = console_shared_h;
ch->subproc_ready = subproc_ready;
ch->pppid_handle = myself->ppid_handle;
if (chtype != PROC_EXEC || !parent_alive)
ch->parent_alive = hwait_subproc;
else
DuplicateHandle (hMainProc, parent_alive, hMainProc, &ch->parent_alive,
0, 1, DUPLICATE_SAME_ACCESS);
}
/* Check the state of all of our children to see if any are stopped or