| /* Copyright (C) 1994-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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) |