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bytevectors have internal parent field

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* libguile/bytevectors.h (SCM_BYTEVECTOR_HEADER_SIZE): Bump, giving
  bytevectors another word: a parent pointer.  Will allow for
  sub-bytevectors and efficient mmap bindings.

* libguile/bytevectors.c (make_bytevector):
  (make_bytevector_from_buffer): Init parent to #f.
  (scm_c_take_bytevector, scm_c_take_typed_bytevector): Another
  argument, the parent, which gets set in the bytevector.

* libguile/foreign.c (scm_pointer_to_bytevector): Use the parent field
  instead of registering a weak reference from bytevector to foreign
  pointer.

* libguile/objcodes.c (scm_objcode_to_bytecode): Use the parent field to
  avoid copying the objcode.

* libguile/srfi-4.c (DEFINE_SRFI_4_C_FUNCS):
* libguile/strings.c (scm_from_stringn):
* libguile/vm.c (really_make_boot_program):
* libguile/r6rs-ports.c (scm_get_bytevector_some)
  (scm_get_bytevector_all, bytevector_output_port_procedure): Set the
  parent to #f.
This commit is contained in:
Andy Wingo 2011-05-07 14:57:15 +02:00
parent 5eb75b5de0
commit 059a588fed
8 changed files with 45 additions and 25 deletions
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2
libguile/strings.c
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@ -1489,7 +1489,7 @@ scm_from_stringn (const char *str, size_t len, const char *encoding,
buf = scm_gc_malloc_pointerless (len, "bytevector");
memcpy (buf, str, len);
bv = scm_c_take_bytevector (buf, len);
bv = scm_c_take_bytevector (buf, len, SCM_BOOL_F);
scm_decoding_error (__func__, errno,
"input locale conversion error", bv);