1 /* $NetBSD: rumpuser_int.h,v 1.4 2010/11/15 15:23:32 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <stdlib.h> 29 30 #include <rump/rumpuser.h> 31 32 extern kernel_lockfn rumpuser__klock; 33 extern kernel_unlockfn rumpuser__kunlock; 34 extern int rumpuser__wantthreads; 35 36 #define seterror(value) do { if (error) *error = value;} while (/*CONSTCOND*/0) 37 38 #define KLOCK_WRAP(a) \ 39 do { \ 40 int nlocks; \ 41 rumpuser__kunlock(0, &nlocks, NULL); \ 42 a; \ 43 rumpuser__klock(nlocks, NULL); \ 44 } while (/*CONSTCOND*/0) 45 46 #define DOCALL(rvtype, call) \ 47 { \ 48 rvtype rv; \ 49 rv = call; \ 50 if (rv == -1) \ 51 seterror(errno); \ 52 else \ 53 seterror(0); \ 54 return rv; \ 55 } 56 57 #define DOCALL_KLOCK(rvtype, call) \ 58 { \ 59 rvtype rv; \ 60 int nlocks; \ 61 rumpuser__kunlock(0, &nlocks, NULL); \ 62 rv = call; \ 63 rumpuser__klock(nlocks, NULL); \ 64 if (rv == -1) \ 65 seterror(errno); \ 66 else \ 67 seterror(0); \ 68 return rv; \ 69 } 70