ErrorCopyFunc (java-gi API)

All Superinterfaces:: FunctionPointer

Functional Interface:: This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface @Generated("io.github.jwharm.JavaGI") public interface ErrorCopyFunc extends FunctionPointer

Functional interface declaration of the ErrorCopyFunc callback.

See Also:

Method Summary

Modifier and Type

Method

Description

void

run(GError srcError, GError destError)

Specifies the type of function which is called when an extended error instance is copied.

default MemorySegment

toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.

default void

upcall(MemorySegment srcError, MemorySegment destError)

The upcall method is called from native code.

Method Details
- run
  
  void run(GError srcError, GError destError)
  
  Specifies the type of function which is called when an extended error instance is copied. It is passed the pointer to the destination error and source error, and should copy only the fields of the private data from srcError to destError.
  Normally, it is better to use G_DEFINE_EXTENDED_ERROR(), as it already takes care of getting the private data from srcError and destError.
- upcall
  
  default void upcall(MemorySegment srcError, MemorySegment destError)
  
  The upcall method is called from native code. The parameters are marshaled and run(org.gnome.glib.GError, org.gnome.glib.GError) is executed.
- toCallback
  
  default MemorySegment toCallback(Arena arena)
  
  Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
  
  Specified by:
  
  toCallback in interface FunctionPointer
  
  Parameters:
  
  arena - the function pointer will be allocated in this arena
  
  Returns:
  
  the native function pointer