mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Copyright (C) 1994,1995,1996,1997,2005 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <mach.h>
|
|
#include <hurd/threadvar.h>
|
|
|
|
#define GETPORT \
|
|
mach_port_t *portloc = \
|
|
(mach_port_t *) __hurd_threadvar_location (_HURD_THREADVAR_MIG_REPLY)
|
|
#define reply_port (*(use_threadvar ? portloc : &global_reply_port))
|
|
|
|
static int use_threadvar;
|
|
static mach_port_t global_reply_port;
|
|
|
|
/* These functions are called by MiG-generated code. */
|
|
|
|
/* Called by MiG to get a reply port. */
|
|
mach_port_t
|
|
__mig_get_reply_port (void)
|
|
{
|
|
GETPORT;
|
|
|
|
if (reply_port == MACH_PORT_NULL)
|
|
reply_port = __mach_reply_port ();
|
|
|
|
return reply_port;
|
|
}
|
|
weak_alias (__mig_get_reply_port, mig_get_reply_port)
|
|
|
|
/* Called by MiG to deallocate the reply port. */
|
|
void
|
|
__mig_dealloc_reply_port (mach_port_t arg)
|
|
{
|
|
mach_port_t port;
|
|
|
|
GETPORT;
|
|
|
|
port = reply_port;
|
|
reply_port = MACH_PORT_NULL; /* So the mod_refs RPC won't use it. */
|
|
|
|
if (MACH_PORT_VALID (port))
|
|
__mach_port_mod_refs (__mach_task_self (), port,
|
|
MACH_PORT_RIGHT_RECEIVE, -1);
|
|
}
|
|
weak_alias (__mig_dealloc_reply_port, mig_dealloc_reply_port)
|
|
|
|
/* Called by mig interfaces when done with a port. Used to provide the
|
|
same interface as needed when a custom allocator is used. */
|
|
void
|
|
__mig_put_reply_port(mach_port_t port)
|
|
{
|
|
/* Do nothing. */
|
|
}
|
|
weak_alias (__mig_put_reply_port, mig_put_reply_port)
|
|
|
|
/* Called at startup with STACK == NULL. When per-thread variables are set
|
|
up, this is called again with STACK set to the new stack being switched
|
|
to, where per-thread variables should be set up. */
|
|
void
|
|
__mig_init (void *stack)
|
|
{
|
|
use_threadvar = stack != 0;
|
|
|
|
if (use_threadvar)
|
|
{
|
|
/* Recycle the reply port used before multithreading was enabled. */
|
|
mach_port_t *portloc = (mach_port_t *)
|
|
__hurd_threadvar_location_from_sp (_HURD_THREADVAR_MIG_REPLY, stack);
|
|
*portloc = global_reply_port;
|
|
global_reply_port = MACH_PORT_NULL;
|
|
}
|
|
}
|
|
weak_alias (__mig_init, mig_init)
|