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-rw-r--r--winsup/cygwin/fork.cc79
1 files changed, 2 insertions, 77 deletions
diff --git a/winsup/cygwin/fork.cc b/winsup/cygwin/fork.cc
index 56ba0fc0f..2b29a1d70 100644
--- a/winsup/cygwin/fork.cc
+++ b/winsup/cygwin/fork.cc
@@ -47,83 +47,6 @@ class frok
friend int fork ();
};
-class lock_signals
-{
- bool worked;
-public:
- lock_signals ()
- {
- worked = sig_send (NULL, __SIGHOLD) == 0;
- }
- operator int () const
- {
- return worked;
- }
- void dont_bother ()
- {
- worked = false;
- }
- ~lock_signals ()
- {
- if (worked)
- sig_send (NULL, __SIGNOHOLD);
- }
-};
-
-class lock_pthread
-{
- bool bother;
-public:
- lock_pthread (): bother (1)
- {
- pthread::atforkprepare ();
- }
- void dont_bother ()
- {
- bother = false;
- }
- ~lock_pthread ()
- {
- if (bother)
- pthread::atforkparent ();
- }
-};
-
-class hold_everything
-{
-public: /* DELETEME*/
- bool& ischild;
- /* Note the order of the locks below. It is important,
- to avoid races, that the lock order be preserved.
-
- pthread is first because it serves as a master lock
- against other forks being attempted while this one is active.
-
- signals is next to stop signal processing for the duration
- of the fork.
-
- process is last. If it is put before signals, then a deadlock
- could be introduced if the process attempts to exit due to a signal. */
- lock_pthread pthread;
- lock_signals signals;
- lock_process process;
-
-public:
- hold_everything (bool& x): ischild (x) {}
- operator int () const {return signals;}
-
- ~hold_everything()
- {
- if (ischild)
- {
- pthread.dont_bother ();
- process.dont_bother ();
- signals.dont_bother ();
- }
- }
-
-};
-
static void
resume_child (HANDLE forker_finished)
{
@@ -407,6 +330,7 @@ frok::parent (volatile char * volatile stack_here)
while (1)
{
hchild = NULL;
+ myself.prefork ();
rc = CreateProcessW (myself->progname, /* image to run */
myself->progname, /* what we send in arg0 */
&sec_none_nih,
@@ -592,6 +516,7 @@ frok::parent (volatile char * volatile stack_here)
/* Common cleanup code for failure cases */
cleanup:
+ myself.postfork ();
if (fix_impersonation)
cygheap->user.reimpersonate ();
if (locked)