Thanks to Ken Raeburn.
* test-suite/tests/net-db.test ("getaddrinfo")["port 80"]: Fix bogus
check of `addrinfo:flags' (POSIX says that the "contents of the
ai_flags field of the returned structures are undefined.").
("wrong service name"): Accept `EAI_NONAME' as a valid error code.
* module/language/assembly/compile-bytecode.scm (write-bytecode):
Replace the WRITE-BYTE and GET-ADDR parameters with PORT. New ADDRESS
and EMIT-OPCODE? parameters. Callers updated.
[write-byte, get-addr]: New procedures.
Adjust to write to PORT.
(compile-bytecode): Update accordingly.
* test-suite/tests/asm-to-bytecode.test (munge-bytecode): Return a
bytevector instead of a u8vector.
(comp-test): Deal with bytevectors.
* libguile/vm.h (struct scm_vm_cont): Instead of saving the "IP", save
"RA" and "MVRA". That is, save singly-valued and multiply-valued
return addresses, so that we can return multiple values on the stack.
(scm_i_vm_reinstate_continuation): Remove.
* libguile/vm.c (vm_capture_continuation): Rename from capture_vm_cont,
and change the prototype so we can capture the RA and MVRA, and so
that tail calls to call/cc can capture a continuation without the
call/cc application frame.
(vm_return_to_continuation): Rename from reinstate_vm_cont, and take
arguments to return to the continuation. Handles returning to single
or multiple-value RA.
(scm_i_vm_capture_continuation): Change to invoke
vm_capture_continuation. Kept around for the benefit of make-stack.
* libguile/vm-i-system.c (continuation-call): Handle reinstatement of
the VM stack, with arguments.
(call/cc, tail-call/cc): Adapt to new vm_capture_continuation
prototype. tail-call/cc captures tail continuations.
* libguile/stacks.c (scm_make_stack): Update for scm_vm_cont structure
change.
* libguile/continuations.h (struct scm_contregs): Remove throw_value
member, which was used to return a value to a continuation.
(scm_i_check_continuation): New internal function, checks that a
continuation may be reinstated.
(scm_i_reinstate_continuation): Replaces scm_i_continuation_call; just
reinstates the C stack.
(scm_i_contregs_vm, scm_i_contregs_vm_cont): New internal accessors.
* libguile/continuations.c (scm_i_make_continuation): Return
SCM_UNDEFINED if we are returning again.
(grow_stack, copy_stack_and_call, scm_dynthrow): Remove extra arg, as
vm opcodes handle value returns.
(copy_stack): No need to instate VM continuation.
(scm_i_reinstate_continuation): Adapt.
* libguile/continuations.h:
* libguile/continuations.c (scm_i_make_continuation): Take VM and VM
continuation arguments as well; I'm not convinced that saving all VM
continuations was the right thing, and in any case we only ever saved
the latest. Running a new VM should create a continuation barrier.
* libguile/stacks.c (scm_make_stack):
* libguile/vm-i-system.c (call/cc, tail-call/cc): Adapt callers.
* libguile/vm.h (scm_i_vm_capture_continuation)
(scm_i_vm_reinstate_continuation): Change to be internal, and to only
capture and reinstate continuations for a particular VM.
* libguile/continuations.h
* libguile/continuations.c (scm_i_call_with_current_continuation): New
internal function. Not exported because I'm not sure whether or not
this should have a continuation barrier in the future. Uses a
hand-coded VM procedure.
* libguile/eval.c (eval): Use scm_i_call_with_current_continuation.
* libguile/vm-i-system.c (continuation-call): New op, like subr-call or
foreign-call, but for continuations.
* libguile/continuations.h: Add scm_i_continuation_call internal
declaration.
(SCM_CONTINUATIONP): Reimplement in terms of
SCM_PROGRAM_IS_CONTINUATION.
(scm_tc16_continuation, SCM_CONTREGS, SCM_CONTINUATION_LENGTH)
(SCM_SET_CONTINUATION_LENGTH, SCM_JMPBUF, SCM_DYNENV, SCM_THROW_VALUE)
(SCM_CONTINUATION_ROOT, SCM_DFRAME): Remove these from the exposed
API.
(scm_i_continuation_to_frame): New internal declaration.
* libguile/continuations.c
* libguile/continuations.c: Add trickery like in foreign.c, smob.c, and
gsubr.c, so that we can make procedural trampolines for continuations.
(scm_i_continuation_to_frame): New internal function, from stacks.c.
* libguile/programs.h (SCM_F_PROGRAM_IS_CONTINUATION)
(SCM_PROGRAM_IS_CONTINUATION): Add a flag for programs that are
continuations. Probably should add flags for the other trampoline
types too.
* libguile/programs.c (scm_i_program_print): Print continuations as
before.
* libguile/stacks.c (scm_stack_id, scm_make_stack): Use
scm_i_continuation_to_frame in the continuation case.
* module/language/tree-il/compile-glil.scm (flatten): Push a handler
value even in the inline-handler case, to make prompt's interface more
uniform, and also to correspond to the existing VM implementation.
* libguile/read.c (read_token): now takes a C buffer instead of a SCM.
string. All callers changed.
(read_complete_token): now takes C buffers, not SCM strings. No longer
does port position updates or encoding processing. All callers changed.
(scm_read_number, scm_read_mixed_case_symbol, scm_read_number_and_radix)
(scm_read_character): Do port updates and string processing no longer
done by read_complete_token. Some reordering for optimization.
* module/language/tree-il/analyze.scm (graph-reachable-nodes): Add
REACHABLE argument. Update to use vhash instead of alists or lists.
(graph-reachable-nodes*): Adjust accordingly.
(partition*): New function.
(unused-toplevel-analysis): Adjust to use vhash instead of alists or
lists.
* module/language/tree-il/primitives.scm (define-primitive-expander):
Allow quoted datums. Allow all self-evaluating expressions to be
constants.
(prompt, control): Add primitive expanders to turn these into @prompt
and @control.
* module/ice-9/control.scm: New module, for delimited continuation
operators.
* module/Makefile.am: Add.
* libguile/Makefile.am:
* libguile/control.c:
* libguile/control.h:
* libguile/init.c: Add stub @control and @prompt primitives, for use
when bootstrapping (ice-9 control).
* module/language/tree-il/analyze.scm (analyze-lexicals): Add cases for
<prompt>, <dynamic-wind>, and <control>. If a continuation is not
referenced in the body of a prompt handler, mark the prompt as
escape-only.
* module/language/tree-il/inline.scm (inline!): Inline the handler of a
prompt if it is a simple lambda.
* module/language/tree-il/primitives.scm: Resolve calls to dynamic-wind
to <dynamic-wind>, thereby inlining the dynwind to VM ops, and
allowing inline allocation of the body thunk.
* libguile/vm-i-system.c (prompt, wind, throw, unwind):
New instructions, for implementing dynamic-wind and delimited
continuations.
* libguile/vm.c: Add some stub support for the new instructions.
* libguile/vm-engine.c: Some new error conditions.
* libguile/foreign.h:
* libguile/foreign.c (scm_foreign_set_finalizer_x): New function, for a
limited form of finalization (like `free').
(scm_alignof, scm_sizeof, parse_ffi_type, fill_ffi_type): For the
purposes of make-foreign-function, treat '* (the asterisk symbol) as a
pointer.
* module/system/foreign.scm: Export foreign-set-finalizer!.
* module/statprof.scm (get-call-data): For closures, get call data by
the program's objcode.
(statprof-start, statprof-stop): Fix bug in which all statprof runs
were enabling the apply hook regardless of the setting of
#:count-calls?. The result was distorted timings, where procedure
calls were unfairly penalized.
(procedure=?): Streamline.
* module/language/tree-il/compile-glil.scm (*primcall-ops*):
* module/language/tree-il/primitives.scm
(*interesting-primitive-names*): Actually resolve calls to
`variable-bound?' to the opcode that we have for it.
* libguile/foreign.c (scm_foreign_ref, scm_foreign_set_x)
(scm_i_foreign_print, fill_ffi_type, cif_to_procedure, unpack): Turn a
number of asserts into proper errors.
