diff options
Diffstat (limited to 'freebsd/sys/sys/counter.h')
| -rw-r--r-- | freebsd/sys/sys/counter.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/freebsd/sys/sys/counter.h b/freebsd/sys/sys/counter.h new file mode 100644 index 00000000..2ce71341 --- /dev/null +++ b/freebsd/sys/sys/counter.h @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef __SYS_COUNTER_H__ +#define __SYS_COUNTER_H__ + +typedef uint64_t *counter_u64_t; + +#ifdef _KERNEL +#include <machine/counter.h> + +counter_u64_t counter_u64_alloc(int); +void counter_u64_free(counter_u64_t); + +void counter_u64_zero(counter_u64_t); +uint64_t counter_u64_fetch(counter_u64_t); + +#define COUNTER_ARRAY_ALLOC(a, n, wait) do { \ + for (int i = 0; i < (n); i++) \ + (a)[i] = counter_u64_alloc(wait); \ +} while (0) + +#define COUNTER_ARRAY_FREE(a, n) do { \ + for (int i = 0; i < (n); i++) \ + counter_u64_free((a)[i]); \ +} while (0) + +#define COUNTER_ARRAY_COPY(a, dstp, n) do { \ + for (int i = 0; i < (n); i++) \ + ((uint64_t *)(dstp))[i] = counter_u64_fetch((a)[i]);\ +} while (0) + +#define COUNTER_ARRAY_ZERO(a, n) do { \ + for (int i = 0; i < (n); i++) \ + counter_u64_zero((a)[i]); \ +} while (0) +#endif /* _KERNEL */ +#endif /* ! __SYS_COUNTER_H__ */ |