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Unreachable memory in systems that use manual memory management results in a memory leak. Some garbage collectors implement weak references . If an object is reachable only through either weak references or chains of references that include a weak reference, then the object is said to be weakly reachable .
Memory leak. In computer science, a memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations [ 1 ] in a way that memory which is no longer needed is not released. A memory leak may also happen when an object is stored in memory but cannot be accessed by the running code (i.e. unreachable ...
Memory leak – when memory usage is not tracked or is tracked incorrectly Stack exhaustion – occurs when a program runs out of stack space, typically because of too deep recursion . A guard page typically halts the program, preventing memory corruption, but functions with large stack frames may bypass the page.
Double free bugs, which occur when the program tries to free a region of memory that has already been freed, and perhaps already been allocated again. Certain kinds of memory leaks, in which a program fails to free memory occupied by objects that have become unreachable, which can lead to memory exhaustion. [11]
In computer programming, the lapsed listener problem is a common source of memory leaks for object-oriented programming languages, among the most common ones for garbage collected languages. [1] It originates in the observer pattern, where observers (or listeners) register with a subject (or publisher) to receive events. In basic implementation ...
Tracing garbage collection. In computer programming, tracing garbage collection is a form of automatic memory management that consists of determining which objects should be deallocated ("garbage collected") by tracing which objects are reachable by a chain of references from certain "root" objects, and considering the rest as "garbage" and ...
Fragmentation (computing) In computer storage, fragmentation is a phenomenon in which storage space, such as computer memory or a hard drive, is used inefficiently, reducing capacity or performance and often both. The exact consequences of fragmentation depend on the specific system of storage allocation in use and the particular form of ...
www.hboehm.info /gc /. The Boehm–Demers–Weiser garbage collector, often simply known as the Boehm GC or Boehm collector, is a conservative garbage collector for C and C++ [1] developed by Hans Boehm, Alan Demers, and Mark Weiser. [2][3] Boehm GC is free software distributed under a permissive free software licence similar to the X11 license.