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Diffstat (limited to 'include/haproxy/freq_ctr-t.h')
-rw-r--r-- | include/haproxy/freq_ctr-t.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/haproxy/freq_ctr-t.h b/include/haproxy/freq_ctr-t.h new file mode 100644 index 0000000..d5f1a89 --- /dev/null +++ b/include/haproxy/freq_ctr-t.h @@ -0,0 +1,45 @@ +/* + * include/haproxy/freq_ctr.h + * This file contains structure declarations for frequency counters. + * + * Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu + * + * This 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, version 2.1 + * exclusively. + * + * This 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 this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _HAPROXY_FREQ_CTR_T_H +#define _HAPROXY_FREQ_CTR_T_H + +#include <haproxy/api-t.h> + +/* The generic freq_ctr counter counts a rate of events per period, where the + * period has to be known by the user. The period is measured in ticks and + * must be at least 2 ticks long. This form is slightly more CPU intensive for + * reads than the per-second form as it involves a divide. + */ +struct freq_ctr { + unsigned int curr_tick; /* start date of current period (wrapping ticks) */ + unsigned int curr_ctr; /* cumulated value for current period */ + unsigned int prev_ctr; /* value for last period */ +}; + +#endif /* _HAPROXY_FREQ_CTR_T_H */ + +/* + * Local variables: + * c-indent-level: 8 + * c-basic-offset: 8 + * End: + */ |