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85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
// Copyright © 2023 Ory Corp
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// SPDX-License-Identifier: Apache-2.0
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package metricsx
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import (
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"runtime"
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"sync"
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)
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// MemoryStatistics is a JSON-able version of runtime.MemStats
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type MemoryStatistics struct {
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sync.Mutex
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// Alloc is bytes of allocated heap objects.
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Alloc uint64 `json:"alloc"`
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// TotalAlloc is cumulative bytes allocated for heap objects.
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TotalAlloc uint64 `json:"totalAlloc"`
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// Sys is the total bytes of memory obtained from the OS.
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Sys uint64 `json:"sys"`
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// Lookups is the number of pointer lookups performed by the
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// runtime.
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Lookups uint64 `json:"lookups"`
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// Mallocs is the cumulative count of heap objects allocated.
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// The number of live objects is Mallocs - Frees.
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Mallocs uint64 `json:"mallocs"`
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// Frees is the cumulative count of heap objects freed.
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Frees uint64 `json:"frees"`
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// HeapAlloc is bytes of allocated heap objects.
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HeapAlloc uint64 `json:"heapAlloc"`
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// HeapSys is bytes of heap memory obtained from the OS.
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HeapSys uint64 `json:"heapSys"`
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// HeapIdle is bytes in idle (unused) spans.
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HeapIdle uint64 `json:"heapIdle"`
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// HeapInuse is bytes in in-use spans.
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HeapInuse uint64 `json:"heapInuse"`
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// HeapReleased is bytes of physical memory returned to the OS.
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HeapReleased uint64 `json:"heapReleased"`
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// HeapObjects is the number of allocated heap objects.
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HeapObjects uint64 `json:"heapObjects"`
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// NumGC is the number of completed GC cycles.
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NumGC uint32 `json:"numGC"`
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}
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// ToMap converts to a map[string]interface{}.
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func (ms *MemoryStatistics) ToMap() map[string]interface{} {
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return map[string]interface{}{
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"alloc": ms.Alloc,
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"totalAlloc": ms.TotalAlloc,
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"sys": ms.Sys,
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"lookups": ms.Lookups,
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"mallocs": ms.Mallocs,
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"frees": ms.Frees,
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"heapAlloc": ms.HeapAlloc,
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"heapSys": ms.HeapSys,
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"heapIdle": ms.HeapIdle,
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"heapInuse": ms.HeapInuse,
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"heapReleased": ms.HeapReleased,
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"heapObjects": ms.HeapObjects,
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"numGC": ms.NumGC,
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"nonInteraction": 1,
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}
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}
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// Update takes the most recent stats from runtime.
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func (ms *MemoryStatistics) Update() {
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var m runtime.MemStats
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runtime.ReadMemStats(&m)
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ms.Lock()
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defer ms.Unlock()
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ms.Alloc = m.Alloc
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ms.TotalAlloc = m.TotalAlloc
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ms.Sys = m.Sys
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ms.Lookups = m.Lookups
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ms.Mallocs = m.Mallocs
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ms.Frees = m.Frees
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ms.HeapAlloc = m.HeapAlloc
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ms.HeapSys = m.HeapSys
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ms.HeapIdle = m.HeapIdle
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ms.HeapInuse = m.HeapInuse
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ms.HeapReleased = m.HeapReleased
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ms.HeapObjects = m.HeapObjects
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ms.NumGC = m.NumGC
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}
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