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avoid tls gets when handling interrupts in the vm

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* libguile/__scm.h (SCM_ASYNC_TICK_WITH_CODE): Redefine to take a
  scm_i_thread* as well.  OK to do because it's within a
  BUILDING_LIBGUILE block.

* libguile/vm-engine.c (vm_engine): Cache the scm_i_thread* instead of
  the dynstate, so we can use the thread for ticks.

* libguile/vm-engine.h (VM_HANDLE_INTERRUPTS): Tick with the
  scm_i_thread* local var, to avoid excessive tls calls.

* libguile/vm-i-system.c: Fix dynstate users to use
  current_thread->dynamic_state.
This commit is contained in:
Andy Wingo 2011-05-06 00:17:35 +02:00
parent a2230b653b
commit a2a6c0e319
4 changed files with 8 additions and 8 deletions
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8
libguile/vm-i-system.c
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@ -1635,7 +1635,7 @@ VM_DEFINE_INSTRUCTION (89, wind_fluids, "wind-fluids", 1, -1, 0)
wf = scm_i_make_with_fluids (n, sp + 1, sp + 1 + n);
NULLSTACK (2 * n);
scm_i_swap_with_fluids (wf, dynstate);
scm_i_swap_with_fluids (wf, current_thread->dynamic_state);
scm_i_set_dynwinds (scm_cons (wf, scm_i_dynwinds ()));
NEXT;
}
@ -1645,7 +1645,7 @@ VM_DEFINE_INSTRUCTION (90, unwind_fluids, "unwind-fluids", 0, 0, 0)
SCM wf;
wf = scm_car (scm_i_dynwinds ());
scm_i_set_dynwinds (scm_cdr (scm_i_dynwinds ()));
scm_i_swap_with_fluids (wf, dynstate);
scm_i_swap_with_fluids (wf, current_thread->dynamic_state);
NEXT;
}
@ -1655,7 +1655,7 @@ VM_DEFINE_INSTRUCTION (91, fluid_ref, "fluid-ref", 0, 1, 1)
SCM fluids;
CHECK_UNDERFLOW ();
fluids = SCM_I_DYNAMIC_STATE_FLUIDS (dynstate);
fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state);
if (SCM_UNLIKELY (!SCM_FLUID_P (*sp))
|| ((num = SCM_I_FLUID_NUM (*sp)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
{
@ -1683,7 +1683,7 @@ VM_DEFINE_INSTRUCTION (92, fluid_set, "fluid-set", 0, 2, 0)
SCM val, fluid, fluids;
POP2 (val, fluid);
fluids = SCM_I_DYNAMIC_STATE_FLUIDS (dynstate);
fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state);
if (SCM_UNLIKELY (!SCM_FLUID_P (fluid))
|| ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
{