finalize

When is finalize() invoked during garbage collection?

泄露秘密 提交于 2021-02-16 14:59:41
问题 From : Q11 of https://www.baeldung.com/java-memory-management-interview-questions When an object becomes eligible for GC, the garbage collector has to run the finalize() on it; this method is guaranteed to run only once, thus the collector flags the object as finalized and gives it a rest until the next cycle. I have a few questions to ask: Is that statement correct? Is it during the marking phase, does the garbage collector invoke the finalize() method? Why does it give a rest until the next

Kotlin super.finalize()

假装没事ソ 提交于 2021-02-08 15:16:20
问题 While migration to Kotlin from Java I faced with a problem. I overrided Object 's finalize() method: @Override protected void finalize() throws Throwable { stopTimer(); super.finalize(); } When I tried to do the same with Kotlin I found to solutions. The first one is from the doc: protected fun finalize() { stopTimer() super.finalize() } And the second one from the article (it's in Russian): @Suppress("ProtectedInFinal", "Unused") protected fun finalize() { stopTimer() super.finalize() } But

Kotlin super.finalize()

守給你的承諾、 提交于 2021-02-08 15:16:07
问题 While migration to Kotlin from Java I faced with a problem. I overrided Object 's finalize() method: @Override protected void finalize() throws Throwable { stopTimer(); super.finalize(); } When I tried to do the same with Kotlin I found to solutions. The first one is from the doc: protected fun finalize() { stopTimer() super.finalize() } And the second one from the article (it's in Russian): @Suppress("ProtectedInFinal", "Unused") protected fun finalize() { stopTimer() super.finalize() } But

If Java's generational garbage collectors traverse the graph of live objects, how do they know which objects to call finalize() on? [duplicate]

房东的猫 提交于 2021-02-04 18:08:31
问题 This question already has answers here : How does Java GC call finalize() method? (4 answers) How finalizable objects takes at least 2 garbage collection cycles before it can be reclaimed? (2 answers) why allocation phase can be increased if we override finalize method? (1 answer) Closed 11 months ago . My understanding is that GCs like ParallelGC and G1 are "generational" collectors. Garbage Collection almost happens as a byproduct, since you move all live objects to a new heap region and

If Java's generational garbage collectors traverse the graph of live objects, how do they know which objects to call finalize() on? [duplicate]

此生再无相见时 提交于 2021-02-04 18:08:02
问题 This question already has answers here : How does Java GC call finalize() method? (4 answers) How finalizable objects takes at least 2 garbage collection cycles before it can be reclaimed? (2 answers) why allocation phase can be increased if we override finalize method? (1 answer) Closed 11 months ago . My understanding is that GCs like ParallelGC and G1 are "generational" collectors. Garbage Collection almost happens as a byproduct, since you move all live objects to a new heap region and

If Java's generational garbage collectors traverse the graph of live objects, how do they know which objects to call finalize() on? [duplicate]

孤人 提交于 2021-02-04 18:07:50
问题 This question already has answers here : How does Java GC call finalize() method? (4 answers) How finalizable objects takes at least 2 garbage collection cycles before it can be reclaimed? (2 answers) why allocation phase can be increased if we override finalize method? (1 answer) Closed 11 months ago . My understanding is that GCs like ParallelGC and G1 are "generational" collectors. Garbage Collection almost happens as a byproduct, since you move all live objects to a new heap region and

If Java's generational garbage collectors traverse the graph of live objects, how do they know which objects to call finalize() on? [duplicate]

夙愿已清 提交于 2021-02-04 18:07:12
问题 This question already has answers here : How does Java GC call finalize() method? (4 answers) How finalizable objects takes at least 2 garbage collection cycles before it can be reclaimed? (2 answers) why allocation phase can be increased if we override finalize method? (1 answer) Closed 11 months ago . My understanding is that GCs like ParallelGC and G1 are "generational" collectors. Garbage Collection almost happens as a byproduct, since you move all live objects to a new heap region and

Memory leak of java.util.ref.Finalizer while Finalizer thread is waiting

送分小仙女□ 提交于 2021-01-01 06:57:04
问题 Analysing a heap dump I look for instances of java.lang.ref.Finalizer class. java.lang.ref.Finalizer has 'next' and 'prev' member fields for maintaining linked list. I always get FileInputStream as a tail of the list and FileOutputStream as previous entry to it (analysed several heap dumps). File descriptors for FileInputStream and FileOutputStream are always 0 and 1 respectively: +---[Pending Finalization] java.lang.ref.Finalizer | | | +---queue java.lang.ref.ReferenceQueue [Stack Local] | |