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File Name : address_class.h

/**************************************************************************/
/*                                                                        */
/*                                 OCaml                                  */
/*                                                                        */
/*              Damien Doligez, projet Para, INRIA Rocquencourt           */
/*                                                                        */
/*   Copyright 1996 Institut National de Recherche en Informatique et     */
/*     en Automatique.                                                    */
/*                                                                        */
/*   All rights reserved.  This file is distributed under the terms of    */
/*   the GNU Lesser General Public License version 2.1, with the          */
/*   special exception on linking described in the file LICENSE.          */
/*                                                                        */
/**************************************************************************/

/* Classification of addresses for GC and runtime purposes. */

#ifndef CAML_ADDRESS_CLASS_H
#define CAML_ADDRESS_CLASS_H

#include "config.h"
#include "misc.h"
#include "mlvalues.h"

/* Use the following macros to test an address for the different classes
   it might belong to. */

#define Is_young(val) \
  (Assert (Is_block (val)), \
   (addr)(val) < (addr)caml_young_end && (addr)(val) > (addr)caml_young_start)

#define Is_in_heap(a) (Classify_addr(a) & In_heap)

#define Is_in_heap_or_young(a) (Classify_addr(a) & (In_heap | In_young))

#define Is_in_value_area(a)                                     \
  (Classify_addr(a) & (In_heap | In_young | In_static_data))

#define Is_in_code_area(pc) \
 (    ((char *)(pc) >= caml_code_area_start && \
       (char *)(pc) <= caml_code_area_end)     \
   || (Classify_addr(pc) & In_code_area) )

#define Is_in_static_data(a) (Classify_addr(a) & In_static_data)

/***********************************************************************/
/* The rest of this file is private and may change without notice. */

extern value *caml_young_start, *caml_young_end;
extern char * caml_code_area_start, * caml_code_area_end;

#define Not_in_heap 0
#define In_heap 1
#define In_young 2
#define In_static_data 4
#define In_code_area 8

#ifdef ARCH_SIXTYFOUR

/* 64 bits: Represent page table as a sparse hash table */
int caml_page_table_lookup(void * addr);
#define Classify_addr(a) (caml_page_table_lookup((void *)(a)))

#else

/* 32 bits: Represent page table as a 2-level array */
#define Pagetable2_log 11
#define Pagetable2_size (1 << Pagetable2_log)
#define Pagetable1_log (Page_log + Pagetable2_log)
#define Pagetable1_size (1 << (32 - Pagetable1_log))
CAMLextern unsigned char * caml_page_table[Pagetable1_size];

#define Pagetable_index1(a) (((uintnat)(a)) >> Pagetable1_log)
#define Pagetable_index2(a) \
  ((((uintnat)(a)) >> Page_log) & (Pagetable2_size - 1))
#define Classify_addr(a) \
  caml_page_table[Pagetable_index1(a)][Pagetable_index2(a)]

#endif

int caml_page_table_add(int kind, void * start, void * end);
int caml_page_table_remove(int kind, void * start, void * end);
int caml_page_table_initialize(mlsize_t bytesize);

#endif /* CAML_ADDRESS_CLASS_H */

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2019-07-04 06:36:43
..	dir	-	root/root	0755	2019-07-04 06:36:45
address_class.h	file	3.22 KB	root/root	0644	2018-04-14 03:26:49
alloc.h	file	3.27 KB	root/root	0644	2018-04-14 03:26:49
backtrace.h	file	5.42 KB	root/root	0644	2018-04-14 03:26:49
backtrace_prim.h	file	3.53 KB	root/root	0644	2018-04-14 03:26:49
bigarray.h	file	4.75 KB	root/root	0644	2018-04-14 03:26:49
callback.h	file	2.41 KB	root/root	0644	2018-04-14 03:26:49
compact.h	file	1.34 KB	root/root	0644	2018-04-14 03:26:49
compare.h	file	1.22 KB	root/root	0644	2018-04-14 03:26:49
compatibility.h	file	12.92 KB	root/root	0644	2018-04-14 03:26:49
config.h	file	7.75 KB	root/root	0644	2018-04-14 03:26:49
custom.h	file	2.65 KB	root/root	0644	2018-04-14 03:26:49
debugger.h	file	4.95 KB	root/root	0644	2018-04-14 03:26:49
dynlink.h	file	1.87 KB	root/root	0644	2018-04-14 03:26:49
exec.h	file	2.39 KB	root/root	0644	2018-04-14 03:26:49
fail.h	file	3.86 KB	root/root	0644	2018-04-14 03:26:49
finalise.h	file	1.6 KB	root/root	0644	2018-04-14 03:26:49
fix_code.h	file	1.79 KB	root/root	0644	2018-04-14 03:26:49
freelist.h	file	1.56 KB	root/root	0644	2018-04-14 03:26:49
gc.h	file	3.45 KB	root/root	0644	2018-04-14 03:26:49
gc_ctrl.h	file	2.04 KB	root/root	0644	2018-04-14 03:26:49
globroots.h	file	1.37 KB	root/root	0644	2018-04-14 03:26:49
hash.h	file	1.64 KB	root/root	0644	2018-04-14 03:26:49
hooks.h	file	1.48 KB	root/root	0644	2018-04-14 03:26:49
instrtrace.h	file	1.51 KB	root/root	0644	2018-04-14 03:26:49
instruct.h	file	2.77 KB	root/root	0644	2018-04-14 03:26:49
int64_emul.h	file	6.77 KB	root/root	0644	2018-04-14 03:26:49
int64_format.h	file	3.57 KB	root/root	0644	2018-04-14 03:26:49
int64_native.h	file	2.98 KB	root/root	0644	2018-04-14 03:26:49
interp.h	file	1.57 KB	root/root	0644	2018-04-14 03:26:49
intext.h	file	7.79 KB	root/root	0644	2018-04-14 03:26:49
io.h	file	5.02 KB	root/root	0644	2018-04-14 03:26:49
jumptbl.h	file	2.39 KB	root/root	0644	2018-04-14 03:26:49
major_gc.h	file	3.31 KB	root/root	0644	2018-04-14 03:26:49
md5.h	file	1.96 KB	root/root	0644	2018-04-14 03:26:49
memory.h	file	17.13 KB	root/root	0644	2018-04-14 03:26:49
minor_gc.h	file	4.36 KB	root/root	0644	2018-04-14 03:26:49
misc.h	file	14.2 KB	root/root	0644	2018-04-14 03:26:49
mlvalues.h	file	12.23 KB	root/root	0644	2018-04-14 03:26:49
osdeps.h	file	4.37 KB	root/root	0644	2018-04-14 03:26:49
prims.h	file	1.57 KB	root/root	0644	2018-04-14 03:26:49
printexc.h	file	1.37 KB	root/root	0644	2018-04-14 03:26:49
reverse.h	file	5.65 KB	root/root	0644	2018-04-14 03:26:49
roots.h	file	1.92 KB	root/root	0644	2018-04-14 03:26:49
signals.h	file	2.32 KB	root/root	0644	2018-04-14 03:26:49
signals_machdep.h	file	2.47 KB	root/root	0644	2018-04-14 03:26:49
socketaddr.h	file	2.16 KB	root/root	0644	2018-04-14 03:26:49
spacetime.h	file	8.37 KB	root/root	0644	2018-04-14 03:26:49
stack.h	file	4.53 KB	root/root	0644	2018-04-14 03:26:49
stacks.h	file	1.79 KB	root/root	0644	2018-04-14 03:26:49
startup.h	file	2.12 KB	root/root	0644	2018-04-14 03:26:49
startup_aux.h	file	1.6 KB	root/root	0644	2018-04-14 03:26:49
sys.h	file	1.63 KB	root/root	0644	2018-04-14 03:26:49
threads.h	file	3.12 KB	root/root	0644	2018-04-14 03:26:49
ui.h	file	1.44 KB	root/root	0644	2018-04-14 03:26:49
unixsupport.h	file	1.95 KB	root/root	0644	2018-04-14 03:26:49
version.h	file	193 B	root/root	0644	2018-04-14 03:26:49
weak.h	file	3.05 KB	root/root	0644	2018-04-14 03:26:49