Return to ring.h CVS log

Up to [GnuMach] / Gnu-Mach / xen

Annotation of Gnu-Mach/xen/ring.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  *  Copyright (C) 2006-2009 Free Software Foundation
                      3:  *
                      4:  * This program is free software ; you can redistribute it and/or modify
                      5:  * it under the terms of the GNU General Public License as published by
                      6:  * the Free Software Foundation ; either version 2 of the License, or
                      7:  * (at your option) any later version.
                      8:  *
                      9:  * This program is distributed in the hope that it will be useful,
                     10:  * but WITHOUT ANY WARRANTY ; without even the implied warranty of
                     11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
                     12:  * GNU General Public License for more details.
                     13:  *
                     14:  * You should have received a copy of the GNU General Public License
                     15:  * along with the program ; if not, write to the Free Software
                     16:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     17:  */
                     18: 
                     19: #ifndef        XEN_RING_H
                     20: #define        XEN_RING_H
                     21: 
                     22: typedef unsigned32_t hyp_ring_pos_t;
                     23: 
                     24: #define hyp_ring_idx(ring, pos) (((unsigned)(pos)) & (sizeof(ring)-1))
                     25: #define hyp_ring_cell(ring, pos) (ring)[hyp_ring_idx((ring), (pos))]
                     26: #define hyp_ring_smash(ring, prod, cons) (hyp_ring_idx((ring), (prod) + 1) == \
                     27:                                 hyp_ring_idx((ring), (cons)))
                     28: #define hyp_ring_available(ring, prod, cons) hyp_ring_idx((ring), (cons)-(prod)-1)
                     29: 
                     30: void hyp_ring_store(void *dest, const void *src, size_t size, void *start, void *end);
                     31: void hyp_ring_fetch(void *dest, const void *src, size_t size, void *start, void *end);
                     32: size_t hyp_ring_next_word(char **c, void *start, void *end);
                     33: 
                     34: #endif /* XEN_RING_H */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.