54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* stats:
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*
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* Copyright (c) 2012 Basho Technologies, Inc. All Rights Reserved.
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* Author: Gregory Burd <greg@basho.com> <greg@burd.me>
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*
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* This file is provided to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain
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* a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef __STATS_H__
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#define __STATS_H__
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define STAT_DEF(name) struct stat *name ## _stat;
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struct stat {
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duration_t d;
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uint32_t h, n, num_samples;
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uint64_t min, max;
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double mean;
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uint64_t histogram[64];
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uint64_t samples[];
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};
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extern double __stat_mean(struct stat *s);
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extern double __stat_mean_log2(struct stat *s);
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extern uint64_t __stat_tick(struct stat *s);
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extern void __stat_reset(struct stat *s);
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extern uint64_t __stat_tock(struct stat *s);
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extern void __stat_print_histogram(struct stat *s, const char *mod);
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extern void __stat_free(struct stat *s);
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extern struct stat *__stat_init(uint32_t n);
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#if defined(__cplusplus)
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}
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#endif
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#endif // __STATS_H__
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