1 files changed, 76 insertions, 0 deletions
diff --git a/winsup/cygwin/perthread.h b/winsup/cygwin/perthread.h
index fa6e1dfcb..7d009e1f0 100644
--- a/winsup/cygwin/perthread.h
+++ b/winsup/cygwin/perthread.h
@@ -35,3 +35,79 @@ set_reent (struct _reent *r)
   *base = PTMAGIC;
   base[-1] = (DWORD) r;
 }
+
+#define PER_THREAD_FORK_CLEAR ((void *)0xffffffff)
+class per_thread
+{
+  DWORD tls;
+  int clear_on_fork_p;
+public:
+  per_thread (int forkval = 1) {tls = TlsAlloc (); clear_on_fork_p = forkval;}
+  DWORD get_tls () {return tls;}
+  int clear_on_fork () {return clear_on_fork_p;}
+
+  virtual void *get () {return TlsGetValue (get_tls ());}
+  virtual size_t size () {return 0;}
+  virtual void set (void *s = NULL);
+  virtual void set (int n) {TlsSetValue (get_tls (), (void *)n);}
+  virtual void *create ()
+  {
+    void *s = new char [size ()];
+    memset (s, 0, size ());
+    set (s);
+    return s;
+  }
+};
+
+class per_thread_waitq : public per_thread
+{
+public:
+  per_thread_waitq () : per_thread (0) {}
+  void *get () {return (waitq *) this->per_thread::get ();}
+  void *create () {return (waitq *) this->per_thread::create ();}
+  size_t size () {return sizeof (waitq);}
+};
+
+struct vfork_save
+{
+  int pid;
+  jmp_buf j;
+  DWORD frame[100];
+  char **vfork_ebp;
+  char **vfork_esp;
+  int is_active () { return pid < 0; }
+};
+
+class per_thread_vfork : public per_thread
+{
+public:
+  vfork_save *val () { return (vfork_save *) this->per_thread::get (); }
+  vfork_save *create () {return (vfork_save *) this->per_thread::create ();}
+  size_t size () {return sizeof (vfork_save);}
+};
+
+extern "C" {
+struct signal_dispatch
+{
+  int arg;
+  void (*func) (int);
+  int sig;
+  int saved_errno;
+  DWORD oldmask;
+  DWORD retaddr;
+  DWORD *retaddr_on_stack;
+};
+};
+
+struct per_thread_signal_dispatch : public per_thread
+{
+  signal_dispatch *get () { return (signal_dispatch *) this->per_thread::get (); }
+  signal_dispatch *create () {return (signal_dispatch *) this->per_thread::create ();}
+  size_t size () {return sizeof (signal_dispatch);}
+};
+
+extern per_thread_waitq waitq_storage;
+extern per_thread_vfork vfork_storage;
+extern per_thread_signal_dispatch signal_dispatch_storage;
+
+extern per_thread *threadstuff[];