9661a0c8b7
queried in waitsig later. * sigproc.cc (wait_sig): Don't deliver a signal if in a vfork. * fork.cc (vfork): Deliver all signals on parent return from vfork.
119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
/* perthread.h: Header file for cygwin synchronization primitives.
|
|
|
|
Copyright 2000, 2001 Red Hat, Inc.
|
|
|
|
Written by Christopher Faylor <cgf@cygnus.com>
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#define PTMAGIC 0x77366377
|
|
|
|
struct _reent;
|
|
extern struct _reent reent_data;
|
|
|
|
extern DWORD *__stackbase __asm__ ("%fs:4");
|
|
|
|
extern __inline struct _reent *
|
|
get_reent ()
|
|
{
|
|
DWORD *base = __stackbase - 1;
|
|
|
|
if (*base != PTMAGIC)
|
|
return &reent_data;
|
|
return (struct _reent *) base[-1];
|
|
}
|
|
|
|
extern inline void
|
|
set_reent (struct _reent *r)
|
|
{
|
|
DWORD *base = __stackbase - 1;
|
|
|
|
*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);}
|
|
};
|
|
|
|
#if defined (NEED_VFORK)
|
|
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 per_thread_vfork vfork_storage;
|
|
extern vfork_save *main_vfork;
|
|
#endif
|
|
|
|
extern "C" {
|
|
struct signal_dispatch
|
|
{
|
|
int arg;
|
|
void (*func) (int);
|
|
int sig;
|
|
int saved_errno;
|
|
int sa_flags;
|
|
DWORD oldmask;
|
|
DWORD newmask;
|
|
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_signal_dispatch signal_dispatch_storage;
|
|
|
|
extern per_thread *threadstuff[];
|