runtime/GC/GCInterface.h

   1 /*===-- GCInterface.h - Public interface exposed by garbage collectors ----===*\
   2 |*
   3 |*                     The LLVM Compiler Infrastructure
   4 |*
   5 |* This file was developed by the LLVM research group and is distributed under
   6 |* the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 |*
   8 |*===----------------------------------------------------------------------===*|
   9 |*
  10 |* This file defines the common public interface that must be exposed by all
  11 |* LLVM garbage collectors.
  12 |*
  13 \*===----------------------------------------------------------------------===*/
  14
  15 #ifndef GCINTERFACE_H
  16 #define GCINTERFACE_H
  17
  18 /* llvm_cg_walk_gcroots - This function is exposed by the LLVM code generator,
  19  * and allows us to traverse the roots on the stack.
  20  */
  21 void llvm_cg_walk_gcroots(void (*FP)(void **Root, void *Meta));
  22
  23
  24 /* llvm_gc_initialize - This function is called to initalize the garbage
  25  * collector.
  26  */
  27 void llvm_gc_initialize(unsigned InitialHeapSize);
  28
  29 /* llvm_gc_allocate - This function allocates Size bytes from the heap and
  30  * returns a pointer to it.
  31  */
  32 void *llvm_gc_allocate(unsigned Size);
  33
  34 /* llvm_gc_collect - This function forces a garbage collection cycle.
  35  */
  36 void llvm_gc_collect();
  37
  38 /* llvm_gc_read - This function should be implemented to include any read
  39  * barrier code that is needed by the garbage collector.
  40  */
  41 void *llvm_gc_read(void *ObjPtr, void **FieldPtr);
  42
  43 /* llvm_gc_write - This function should be implemented to include any write
  44  * barrier code that is needed by the garbage collector.
  45  */
  46 void llvm_gc_write(void *V, void *ObjPtr, void **FieldPtr);
  47
  48 #endif