#ifndef SCM_THREADS_INTERNAL_H
#define SCM_THREADS_INTERNAL_H

/* Copyright 2025 Free Software Foundation, Inc.

   This file is part of Guile.

   Guile is free software: you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   Guile is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
   License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with Guile.  If not, see
   <https://www.gnu.org/licenses/>.  */



#include "libguile/scm.h"
#include "gc-ref.h"



struct scm_thread;
struct scm_vm;
struct gc_heap;
struct gc_heap_roots { int unused; };

static inline SCM
scm_from_ref (struct gc_ref ref)
{
  return SCM_PACK (gc_ref_value (ref));
}

static inline struct gc_ref
scm_to_ref (SCM scm)
{
  return gc_ref (SCM_UNPACK (scm));
}

SCM_INTERNAL void
scm_trace_thread_roots (struct scm_thread *thread,
                        void (*trace_pinned) (struct gc_ref ref,
                                              struct gc_heap *heap,
                                              void *trace_data),
                        void (*trace_ambiguous) (uintptr_t lo,
                                                 uintptr_t hi,
                                                 int possibly_interior,
                                                 struct gc_heap *heap,
                                                 void *trace_data),
                        struct gc_heap *heap,
                        void *trace_data);

SCM_INTERNAL void
scm_trace_vm_roots (struct scm_vm *vp,
                    void (*trace_pinned) (struct gc_ref ref,
                                          struct gc_heap *heap,
                                          void *trace_data),
                    void (*trace_ambiguous) (uintptr_t lo,
                                             uintptr_t hi,
                                             int possibly_interior,
                                             struct gc_heap *heap,
                                             void *trace_data),
                    struct gc_heap *heap,
                    void *trace_data);

SCM_INTERNAL void
scm_trace_loader_roots (void (*trace_ambiguous) (uintptr_t lo,
                                                 uintptr_t hi,
                                                 int possibly_interior,
                                                 struct gc_heap *heap,
                                                 void *trace_data),
                        struct gc_heap *heap,
                        void *trace_data);


#endif  /* SCM_THREADS_INTERNAL_H */