darwinCommon.io.realm.internal.PlatformHelper.kt Maven / Gradle / Ivy

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Library code for Realm Kotlin. This artifact is not supposed to be consumed directly, but through 'io.realm.kotlin:gradle-plugin:0.4.1' instead.

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/*
 * Copyright 2021 Realm Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.realm.internal

import kotlinx.cinterop.ULongVar
import kotlinx.cinterop.alloc
import kotlinx.cinterop.memScoped
import kotlinx.cinterop.ptr
import kotlinx.cinterop.value
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.newSingleThreadContext
import platform.posix.pthread_threadid_np
import kotlin.coroutines.CoroutineContext

// Expose platform runBlocking through common interface
public actual fun  runBlocking(context: CoroutineContext, block: suspend CoroutineScope.() -> T): T {
    return kotlinx.coroutines.runBlocking(context, block)
}

/**
 * The default dispatcher for Darwin platforms spawns a new thread with a run loop.
 */
actual fun singleThreadDispatcher(id: String): CoroutineDispatcher {
    return newSingleThreadContext(id)
}

actual fun threadId(): ULong {
    memScoped {
        val tidVar = alloc()
        pthread_threadid_np(null, tidVar.ptr)
        return tidVar.value
    }
}

actual typealias WeakReference = kotlin.native.ref.WeakReference