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remove weak pairs, rewrite weak vectors

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* libguile/weak-vector.c:
* libguile/weak-vector.h: Renamed from weaks.[ch].  Remove weak pairs.
  They were not safe to access with `car' and `cdr'.  Remove weak alist
  vectors, as we have weak tables and sets.  Reimplement weak vectors,
  moving the implementation here.

* libguile/vectors.c:
* libguile/vectors.h: Remove the extra header word.  Use
  scm_c_weak_vector_ref / scm_c_weak_vector_set_x to access weak
  vectors.

* libguile/snarf.h: Remove the extra header word in vectors.

* libguile/threads.c (do_thread_exit, fat_mutex_lock, fat_mutex_unlock):
  Instead of weak pairs, store thread-owned mutexes in a list of
  one-element weak vectors.

* libguile/guardians.c (finalize_guarded): Similarly, store object
  guardians in a list of one-element weak vectors.

* libguile/modules.c (scm_module_reverse_lookup): We no longer need to
  handle the case of weak references.

* libguile/print.c (iprin1): Use the standard vector accessor to print
  vectors.

* libguile.h:
* libguile/Makefile.am:
* libguile/gc-malloc.c:
* libguile/gc.c:
* libguile/goops.c:
* libguile/init.c:
* libguile/objprop.c:
* libguile/struct.c: Update includes.

* module/ice-9/weak-vector.scm: Load weak vector definitions using an
  extension instead of %init-weaks-builtins.

* test-suite/tests/weaks.test: Use the make-...-hash-table names instead
  of the old alist vector names.
This commit is contained in:
Andy Wingo 2011-10-24 10:52:55 +02:00
parent c4e83f74c2
commit a141db8604
22 changed files with 364 additions and 642 deletions
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6
libguile/init.c
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@ -133,7 +133,6 @@
#include "libguile/version.h"
#include "libguile/vm.h"
#include "libguile/vports.h"
#include "libguile/weaks.h"
#include "libguile/guardians.h"
#include "libguile/extensions.h"
#include "libguile/uniform.h"
@ -383,12 +382,11 @@ scm_i_init_guile (void *base)
scm_storage_prehistory ();
scm_threads_prehistory (base); /* requires storage_prehistory */
scm_weaks_prehistory (); /* requires storage_prehistory */
scm_weak_table_prehistory (); /* requires storage_prehistory */
#ifdef GUILE_DEBUG_MALLOC
scm_debug_malloc_prehistory ();
#endif
scm_symbols_prehistory (); /* requires weaks_prehistory */
scm_symbols_prehistory (); /* requires weak_table_prehistory */
scm_modules_prehistory ();
scm_init_array_handle ();
scm_bootstrap_bytevectors (); /* Requires array-handle */
@ -489,9 +487,9 @@ scm_i_init_guile (void *base)
scm_init_throw (); /* Requires smob_prehistory */
scm_init_trees ();
scm_init_version ();
scm_init_weaks ();
scm_init_weak_set ();
scm_init_weak_table ();
scm_init_weak_vectors ();
scm_init_guardians (); /* requires smob_prehistory */
scm_init_vports ();
scm_init_standard_ports (); /* Requires fports */