| /* Defintions for lowlevel handling in ld.so. |
| Copyright (C) 2006, 2007 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. */ |
| |
| #ifndef _RTLD_LOWLEVEL_H |
| #define _RTLD_LOWLEVEL_H 1 |
| |
| #include <atomic.h> |
| #include <lowlevellock.h> |
| |
| |
| /* Function to wait for variable become zero. Used in ld.so for |
| reference counters. */ |
| #define __rtld_waitzero(word) \ |
| do { \ |
| while (1) \ |
| { \ |
| int val = word; \ |
| if (val == 0) \ |
| break; \ |
| lll_futex_wait (&(word), val, LLL_PRIVATE); \ |
| } \ |
| } while (0) |
| |
| |
| #define __rtld_notify(word) \ |
| lll_futex_wake (&(word), 1, LLL_PRIVATE) |
| |
| #endif |
