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add vm-abort-continuation-hook, vm-restore-continuation-hook

* libguile/vm-i-system.c (call_cc, tail_call_cc): Call the new
  RESTORE_CONTINUATION_HOOK when a continuation is restored.
  (prompt): Call the new ABORT_CONTINUATION_HOOK when entering the abort
  handler's continuation.

* libguile/vm-engine.h (ABORT_CONTINUATION_HOOK)
  (RESTORE_CONTINUATION_HOOK):
* libguile/vm.h (SCM_VM_ABORT_CONTINUATION_HOOK)
  (SCM_VM_RESTORE_CONTINUATION_HOOK):
* libguile/vm.c: (scm_vm_abort_continuation_hook): New hook, called when
  entering an abort handler.
  (scm_vm_restore_continuation_hook): New hook, called after returning
  to a continuation.

* module/system/vm/vm.scm: Add hooks to export list.
This commit is contained in:
Andy Wingo 2010-09-16 12:48:41 +02:00
parent c45d4d775d
commit f312025167
5 changed files with 47 additions and 5 deletions

View file

@ -232,6 +232,10 @@
RUN_HOOK1 (SCM_VM_POP_CONTINUATION_HOOK, SCM_I_MAKINUM (n))
#define NEXT_HOOK() \
RUN_HOOK (SCM_VM_NEXT_HOOK)
#define ABORT_CONTINUATION_HOOK() \
RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK)
#define RESTORE_CONTINUATION_HOOK() \
RUN_HOOK (SCM_VM_RESTORE_CONTINUATION_HOOK)
#define VM_HANDLE_INTERRUPTS \
SCM_ASYNC_TICK_WITH_CODE (SYNC_REGISTER ())