History.cc
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1/*
2 * Copyright (C) 1996-2022 The Squid Software Foundation and contributors
3 *
4 * Squid software is distributed under GPLv2+ license and includes
5 * contributions from numerous individuals and organizations.
6 * Please see the COPYING and CONTRIBUTORS files for details.
7 */
8
9#include "squid.h"
11#include "debug/Stream.h"
12#include "globals.h"
13#include "time/gadgets.h"
14
16 req_sz(0),
17 concurrencyLevel(0)
18{
19 memset(&currentStart, 0, sizeof(currentStart));
20 memset(&pastTime, 0, sizeof(pastTime));
21}
22
23void Adaptation::Icap::History::start(const char *context)
24{
25 if (!concurrencyLevel++)
26 currentStart = current_time;
27
28 debugs(93,4, "start " << context << " level=" << concurrencyLevel
29 << " time=" << tvToMsec(pastTime) << ' ' << this);
30}
31
32void Adaptation::Icap::History::stop(const char *context)
33{
34 if (!concurrencyLevel) {
35 debugs(93, DBG_IMPORTANT, "ERROR: Squid BUG: poor history accounting " << this);
36 return;
37 }
38
39 struct timeval current;
40 currentTime(current);
41 debugs(93,4, "stop " << context << " level=" << concurrencyLevel <<
42 " time=" << tvToMsec(pastTime) << '+' << tvToMsec(current) << ' ' << this);
43
44 if (!--concurrencyLevel)
45 tvAssignAdd(pastTime, current);
46}
47
48void
50{
51 currentTime(total);
52 tvAssignAdd(total, pastTime);
53 debugs(93,7, " current total: " << tvToMsec(total) << ' ' << this);
54}
55
56void
58{
59 if (concurrencyLevel > 0)
60 tvSub(current, currentStart, current_time);
61 else {
62 current.tv_sec = 0;
63 current.tv_usec = 0;
64 }
65}
66
void processingTime(struct timeval &total) const
Definition: History.cc:49
timeval currentStart
when the current processing interval started
Definition: History.h:51
struct timeval pastTime
sum of closed processing interval durations
Definition: History.h:52
void start(const char *context)
record the start of an ICAP processing interval
Definition: History.cc:23
void stop(const char *context)
note the end of an ICAP processing interval
Definition: History.cc:32
void currentTime(struct timeval &) const
time since current start or zero
Definition: History.cc:57
#define DBG_IMPORTANT
Definition: Stream.h:41
#define debugs(SECTION, LEVEL, CONTENT)
Definition: Stream.h:196
void tvSub(struct timeval &res, struct timeval const &t1, struct timeval const &t2)
Definition: gadgets.cc:58
struct timeval current_time
the current UNIX time in timeval {seconds, microseconds} format
Definition: gadgets.cc:17
void tvAssignAdd(struct timeval &t, struct timeval const &add)
Definition: gadgets.cc:79
long int tvToMsec(struct timeval &t)
Definition: gadgets.h:93

 

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