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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package runtime implements the conventional runtime metrics specified by OpenTelemetry.
//
// The metric events produced are:
//
// runtime.go.cgo.calls - Number of cgo calls made by the current process
// runtime.go.gc.count - Number of completed garbage collection cycles
// runtime.go.gc.pause_ns (ns) Amount of nanoseconds in GC stop-the-world pauses
// runtime.go.gc.pause_total_ns (ns) Cumulative nanoseconds in GC stop-the-world pauses since the program started
// runtime.go.goroutines - Number of goroutines that currently exist
// runtime.go.lookups - Number of pointer lookups performed by the runtime
// runtime.go.mem.heap_alloc (bytes) Bytes of allocated heap objects
// runtime.go.mem.heap_idle (bytes) Bytes in idle (unused) spans
// runtime.go.mem.heap_inuse (bytes) Bytes in in-use spans
// runtime.go.mem.heap_objects - Number of allocated heap objects
// runtime.go.mem.heap_released (bytes) Bytes of idle spans whose physical memory has been returned to the OS
// runtime.go.mem.heap_sys (bytes) Bytes of heap memory obtained from the OS
// runtime.go.mem.live_objects - Number of live objects is the number of cumulative Mallocs - Frees
// runtime.uptime (ms) Milliseconds since application was initialized
//
// When the OTEL_GO_X_DEPRECATED_RUNTIME_METRICS environment variable is set to
// false, the metrics produced are:
//
// go.memory.used By Memory used by the Go runtime.
// go.memory.limit By Go runtime memory limit configured by the user, if a limit exists.
// go.memory.allocated By Memory allocated to the heap by the application.
// go.memory.allocations {allocation} Count of allocations to the heap by the application.
// go.memory.gc.goal By Heap size target for the end of the GC cycle.
// go.goroutine.count {goroutine} Count of live goroutines.
// go.processor.limit {thread} The number of OS threads that can execute user-level Go code simultaneously.
// go.config.gogc % Heap size target percentage configured by the user, otherwise 100.
package runtime // import "go.opentelemetry.io/contrib/instrumentation/runtime"
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