From a979f2e9e0957decf77fa7a34702ab1720424477 Mon Sep 17 00:00:00 2001
From: oshai <ohadshai@gmail.com>
Date: Wed, 9 Aug 2023 01:35:14 +0300
Subject: [PATCH] add constant logger

---
 .../oshai/kotlinlogging/internal/KLoggerFactory.kt       | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/darwinMain/kotlin/io/github/oshai/kotlinlogging/internal/KLoggerFactory.kt b/src/darwinMain/kotlin/io/github/oshai/kotlinlogging/internal/KLoggerFactory.kt
index 745547ae..4bfa73fc 100644
--- a/src/darwinMain/kotlin/io/github/oshai/kotlinlogging/internal/KLoggerFactory.kt
+++ b/src/darwinMain/kotlin/io/github/oshai/kotlinlogging/internal/KLoggerFactory.kt
@@ -3,17 +3,26 @@ package io.github.oshai.kotlinlogging.internal
 import io.github.oshai.kotlinlogging.DarwinKLogger
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLoggingConfiguration
+import kotlin.native.concurrent.AtomicReference
 import platform.darwin.OS_LOG_DEFAULT
 import platform.darwin.os_log_create
 
 /** factory methods to obtain a [KLogger] */
 internal actual object KLoggerFactory {
 
+  private val constantLogger: AtomicReference<KLogger?> = AtomicReference(null)
+
   /** get logger by explicit name */
   internal actual fun logger(name: String): KLogger {
     val subsystemConfigured = KotlinLoggingConfiguration.subsystem.value
     val categoryConfigured = KotlinLoggingConfiguration.category.value
     return when {
+      subsystemConfigured != null && categoryConfigured != null -> {
+        constantLogger.value
+          ?: DarwinKLogger(name, os_log_create(subsystemConfigured, categoryConfigured)).also {
+            constantLogger.value = it
+          }
+      }
       subsystemConfigured != null || categoryConfigured != null -> {
         DarwinKLogger(name, os_log_create(subsystemConfigured ?: name, categoryConfigured ?: name))
       }