Interface MemoryMonitor.LowMemoryWarningCallback

All Superinterfaces:
FunctionPointer
Enclosing interface:
MemoryMonitor
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface MemoryMonitor.LowMemoryWarningCallback extends FunctionPointer

Functional interface declaration of the LowMemoryWarningCallback callback.

Since:
2.64
See Also:

  • Method Details

    • run

      void run(MemoryMonitorWarningLevel level)

      Emitted when the system is running low on free memory.

      The signal handler should then take the appropriate action depending on the warning level. See the GMemoryMonitorWarningLevel documentation for details.

      Since the MemoryMonitor is a singleton, this signal will be emitted in the MainContext#default_[global-default main context].

      Since:
      2.64

    • upcall

      default void upcall(MemorySegment sourceMemoryMonitor, int level)
      The upcall method is called from native code. The parameters are marshaled and run(MemoryMonitorWarningLevel) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Creates a native function pointer to the upcall(MemorySegment, int) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer