diff options
Diffstat (limited to 'winsup/cygwin/fork.cc')
-rw-r--r-- | winsup/cygwin/fork.cc | 79 |
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) |