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Allow customization of default scheduler name on JVM #3465

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Merged
merged 2 commits into from
Sep 28, 2022
Merged

Allow customization of default scheduler name on JVM #3465

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Allow customization of default scheduler name on JVM
IgnatBeresnev Sep 26, 2022
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IgnatBeresnev Sep 28, 2022
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11 changes: 11 additions & 0 deletions kotlinx-coroutines-core/common/src/internal/SystemProps.common.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,17 @@ internal fun systemProp(
return parsed
}

/**
* Gets the system property indicated by the specified [property name][propertyName],
* or returns [defaultValue] if there is no property with that key.
*
* **Note: this function should be used in JVM tests only, other platforms use the default value.**
*/
internal fun systemProp(
propertyName: String,
defaultValue: String
): String = systemProp(propertyName) ?: defaultValue

/**
* Gets the system property indicated by the specified [property name][propertyName],
* or returns `null` if there is no property with that key.
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9 changes: 7 additions & 2 deletions kotlinx-coroutines-core/jvm/src/scheduling/Tasks.kt
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Expand Up @@ -9,8 +9,13 @@ import kotlinx.coroutines.internal.*
import java.util.concurrent.*


// Internal debuggability name + thread name prefixes
internal const val DEFAULT_SCHEDULER_NAME = "DefaultDispatcher"
/**
* The name of the default scheduler. The names of the worker threads of [Dispatchers.Default] have it as their prefix.
*/
@JvmField
internal val DEFAULT_SCHEDULER_NAME = systemProp(
"kotlinx.coroutines.scheduler.default.name", "DefaultDispatcher"
)

// 100us as default
@JvmField
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