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authorAndy Wingo <wingo@pobox.com>2010-01-09 14:12:47 +0100
committerAndy Wingo <wingo@pobox.com>2010-01-09 14:21:03 +0100
commit75c3ed282029f4d2a80adf75f52ec1b9b34edcb7 (patch)
tree1167bd621a5dda0a9466f4c0f51d6b363445d73d /libguile/programs.c
parent9174596d5bfc456d06f4cf74a7a67e9b2b09aac3 (diff)
downloadguile-75c3ed282029f4d2a80adf75f52ec1b9b34edcb7.tar.gz
smobs are applied with vm trampoline procedures
* libguile/smob.c: Instead of having special evaluator support for applying smobs, we use the same strategy that gsubr uses, that smob application should happen via a trampoline VM procedure, which uses a special opcode (smob-apply). So statically allocate all of the desired trampoline procedures here. (scm_i_smob_apply_trampoline): Unfortunately there's no real place to put the trampoline, so instead use a weak-key hash. It's nasty, but I think the benefits of speeding up procedure calls in the general case are worth it. * libguile/smob.h (scm_smob_descriptor): Remove fields apply_0, apply_1, apply_2, and apply_3; these were never public. Also remove the gsubr_type field. Instead cache the trampoline objcode here. (SCM_SMOB_APPLY_0, SCM_SMOB_APPLY_1, SCM_SMOB_APPLY_2, SCM_SMOB_APPLY_3): Just go through scm_call_0, etc here. * libguile/vm-i-system.c (call, tail-call, mv-call): Simplify. All procedure calls are VM calls now. (smob-call): New instruction, used in smob trampoline procedures. * libguile/vm.c (apply_foreign): Remove. Yay! * libguile/procprop.c (scm_i_procedure_arity): Refactor a bit for the smob changes.
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