blob: db93c157046a923987acab2716885b8858521812 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <cstdint>
#include <optional>
namespace proton {
/*
* Stats for feed handler.
*/
class FeedHandlerStats
{
uint64_t _commits;
uint64_t _operations;
double _total_latency;
std::optional<uint32_t> _min_operations;
std::optional<uint32_t> _max_operations;
std::optional<double> _min_latency;
std::optional<double> _max_latency;
public:
FeedHandlerStats(uint64_t commits, uint64_t operations, double total_latency) noexcept;
FeedHandlerStats() noexcept;
~FeedHandlerStats();
FeedHandlerStats& operator-=(const FeedHandlerStats& rhs) noexcept;
void add_commit(uint32_t operations, double latency) noexcept;
void reset_min_max() noexcept;
uint64_t get_commits() noexcept { return _commits; }
uint64_t get_operations() noexcept { return _operations; }
double get_total_latency() noexcept { return _total_latency; }
const std::optional<uint32_t>& get_min_operations() noexcept { return _min_operations; }
const std::optional<uint32_t>& get_max_operations() noexcept { return _max_operations; }
const std::optional<double>& get_min_latency() noexcept { return _min_latency; }
const std::optional<double>& get_max_latency() noexcept { return _max_latency; }
};
/**
* Keeps track of feed operations started, completed and being committed.
* Also tracks started and completed commit operations.
*/
class FeedOperationCounter {
public:
FeedOperationCounter()
: _operationsStarted(0),
_operationsCompleted(0),
_operationsStartedAtLastCommitStart(0),
_commitsStarted(0),
_commitsCompleted(0)
{}
void startOperation() { ++_operationsStarted; }
void startCommit() {
_commitsStarted++;
_operationsStartedAtLastCommitStart = _operationsStarted;
}
void commitCompleted(size_t numOperations);
size_t operationsSinceLastCommitStart() const {
return _operationsStarted - _operationsStartedAtLastCommitStart;
}
size_t operationsInFlight() const { return _operationsStarted - _operationsCompleted; }
size_t commitsInFlight() const { return _commitsStarted - _commitsCompleted; }
bool shouldScheduleCommit() const {
return (operationsInFlight() > 0) && (commitsInFlight() == 0);
}
private:
size_t _operationsStarted;
size_t _operationsCompleted;
size_t _operationsStartedAtLastCommitStart;
size_t _commitsStarted;
size_t _commitsCompleted;
};
}
|
