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Rework hook dispatch mechanism

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* libguile/vm-engine.c (RUN_HOOK, RUN_HOOK0, RUN_HOOK1): Rework to
  dispatch through specific per-hook procedures.  Might reduce register
  pressure in the VM.

* libguile/vm.c (vm_dispatch_apply_hook):
  (vm_dispatch_push_continuation_hook):
  (vm_dispatch_pop_continuation_hook):
  (vm_dispatch_next_hook):
  (vm_dispatch_abort_hook):
  (vm_dispatch_restore_continuation_hook): New internal helpers.
This commit is contained in:
Andy Wingo 2013-11-19 22:14:20 +01:00
parent c4f7923fa9
commit ea0cd17d11
2 changed files with 51 additions and 17 deletions
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28
libguile/vm-engine.c
View file

@ -100,35 +100,32 @@
#endif
#if VM_USE_HOOKS
#define RUN_HOOK(h, args, n) \
#define RUN_HOOK(exp) \
do { \
if (SCM_UNLIKELY (vp->trace_level > 0)) \
{ \
SYNC_REGISTER (); \
vm_dispatch_hook (vm, h, args, n); \
exp; \
} \
} while (0)
#else
#define RUN_HOOK(h, args, n)
#define RUN_HOOK(exp)
#endif
#define RUN_HOOK0(h) RUN_HOOK(h, NULL, 0)
#define RUN_HOOK0(h) RUN_HOOK (vm_dispatch_##h##_hook (vm))
#define RUN_HOOK1(h, arg) RUN_HOOK (vm_dispatch_##h##_hook (vm, arg))
#define APPLY_HOOK() \
RUN_HOOK0 (SCM_VM_APPLY_HOOK)
RUN_HOOK0 (apply)
#define PUSH_CONTINUATION_HOOK() \
RUN_HOOK0 (SCM_VM_PUSH_CONTINUATION_HOOK)
RUN_HOOK0 (push_continuation)
#define POP_CONTINUATION_HOOK(old_fp) \
RUN_HOOK (SCM_VM_POP_CONTINUATION_HOOK, \
&SCM_FRAME_LOCAL (old_fp, 1), \
SCM_FRAME_NUM_LOCALS (old_fp, vp->sp) - 1)
RUN_HOOK1 (pop_continuation, old_fp)
#define NEXT_HOOK() \
RUN_HOOK0 (SCM_VM_NEXT_HOOK)
RUN_HOOK0 (next)
#define ABORT_CONTINUATION_HOOK() \
RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK, \
LOCAL_ADDRESS (1), \
FRAME_LOCALS_COUNT () - 1)
#define RESTORE_CONTINUATION_HOOK() \
RUN_HOOK0 (SCM_VM_RESTORE_CONTINUATION_HOOK)
RUN_HOOK0 (abort)
#define RESTORE_CONTINUATION_HOOK() \
RUN_HOOK0 (restore_continuation)
#define VM_HANDLE_INTERRUPTS \
SCM_ASYNC_TICK_WITH_CODE (current_thread, SYNC_REGISTER ())
@ -3156,6 +3153,7 @@ VM_NAME (SCM vm, SCM program, SCM *argv, size_t nargs_)
#undef RETURN_VALUE_LIST
#undef RUN_HOOK
#undef RUN_HOOK0
#undef RUN_HOOK1
#undef SYNC_ALL
#undef SYNC_BEFORE_GC
#undef SYNC_IP