before iterating over it. The table might change while the user
code is running. With the snapshot, the user can depend on the
fact that each port that was open at teh start of the iteration is
encountered exactly once. (ice-9 popen) depends on this.
in C for now.
* rdelim.scm: export the C primitives too.
* documentation.scm: use (ice-9 rdelim).
* filesys.c (scm_link): docstring fix.
* fports.h (scm_setfileno): obsolete declaration removed.
* posix.c: bogus popen declaration removed.
* rdelim.c: new file, split from ioext.c with new proc
scm_init_rdelim.
* rdelim.h: new file.
* Makefile.am: add rdelim.c and related files.
* init.c: call scm_init_rdelim. include rdelim.h.
casts its result, so doesn't yield an lvalue per ANSI C.
* goops.c (s_scm_sys_set_object_setter_x): use
SCM_SET_ENTITY_SETTER.
(clear_method_cache): use SCM_SET_ENTITY_PROCEDURE.
* gc.h (SCM_GC_SET_CARD_BVEC): new macro. SCM_GC_CARD_BVEC casts
its result, so doesn't yield an lvalue per ANSI C.
(SCM_GC_SET_CARD_FLAGS): ditto for SCM_GC_GET_CARD_FLAGS.
(SCM_GC_CLR_CARD_FLAGS): redefined in terms of
SCM_GC_SET_CARD_FLAGS.
(SCM_GC_SET_CARD_FLAG, SCM_GC_CLR_CARD_FLAGS): ditto.
* gc.c (INIT_CARD): use the explicit setter macro to set the bvec.
* ioext.c (scm_read_string_x_partial, scm_read_delimited_x),
socket.c (scm_recvfrom): use the new macro, plus minor docstring
changes.
* ioext.c (scm_read_string_x_partial): don't crash if -1 is supplied
for fdes. if current input port is used, check that it's a file
port.
read-string!/partial.
* ports.c (scm_take_from_input_buffers): new procedure used by
scm_read_string_x_partial.
(scm_drain_input): use scm_take_from_input_buffers.
SET_GREEDY, LISTED_P, SET_LISTED, CLR_LISTED, DESTROYED_P,
SET_DESTROYED): new defines/macros.
(GUARDIAN_LIVE, GUARDIAN_ZOMBIES, GUARDIAN_NEXT): deleted.
(add_to_live_list): takes a `guardian_t *' now, not SCM.
(guardian_print): print more info.
(guardian_apply): check if the guardian is destroyed, and throw an
error if so. take one more optional argument `throw_p'.
(scm_guard): depending on the value of `throw_p', return a boolean
result.
(scm_get_one_zombie): remove redundant property test.
(guardian_t): represent the various (currently 3, I hope nothing
more gets added) boolean fields as bit flags.
(scm_guardian_destroyed_p, scm_guardian_greedy_p): new predicates.
(scm_destroy_guardian_x): new procedure.
* guardians.h: added prototypes for `scm_guardian_greedy_p' and
`scm_guardian_destroyed_p'. changed prototype for `scm_guard'.
`weak_keys' and `weak_values' flags out of the inner loop.
* guardians.c: (greedily_guarded_prop): deleted.
(greedily_guarded_whash): new variable. a doubly-weak hash table
used to keep the "greedily hashed" object property. the previous
implementation (via primitive object properties) was incorrect due
to its only-the-key-is-weak semantics.
(scm_guard, get_one_zombie, scm_init_guardians): use/init
`greedily_guarded_whash'.
