blob: 20a606a772e84405f7e3f8cc6493f583b599e4ec (
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
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <mutex>
#include "opentelemetry/common/spin_lock_mutex.h"
#include "opentelemetry/metrics/meter_provider.h"
#include "opentelemetry/metrics/noop.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace metrics
{
/**
* Stores the singleton global MeterProvider.
*/
class Provider
{
public:
/**
* Returns the singleton MeterProvider.
*
* By default, a no-op MeterProvider is returned. This will never return a
* nullptr MeterProvider.
*/
static nostd::shared_ptr<MeterProvider> GetMeterProvider() noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
return nostd::shared_ptr<MeterProvider>(GetProvider());
}
/**
* Changes the singleton MeterProvider.
*/
static void SetMeterProvider(const nostd::shared_ptr<MeterProvider> &tp) noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
GetProvider() = tp;
}
private:
OPENTELEMETRY_API_SINGLETON static nostd::shared_ptr<MeterProvider> &GetProvider() noexcept
{
static nostd::shared_ptr<MeterProvider> provider(new NoopMeterProvider);
return provider;
}
OPENTELEMETRY_API_SINGLETON static common::SpinLockMutex &GetLock() noexcept
{
static common::SpinLockMutex lock;
return lock;
}
};
} // namespace metrics
OPENTELEMETRY_END_NAMESPACE
|
