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b9007b6c54
This patch contains several ideas:
(1) Disposable inline method cache (IMC) for race-free inline method cache
* Making call-cache (CC) as a RVALUE (GC target object) and allocate new
CC on cache miss.
* This technique allows race-free access from parallel processing
elements like RCU.
(2) Introduce per-Class method cache (pCMC)
* Instead of fixed-size global method cache (GMC), pCMC allows flexible
cache size.
* Caching CCs reduces CC allocation and allow sharing CC's fast-path
between same call-info (CI) call-sites.
(3) Invalidate an inline method cache by invalidating corresponding method
entries (MEs)
* Instead of using class serials, we set "invalidated" flag for method
entry itself to represent cache invalidation.
* Compare with using class serials, the impact of method modification
(add/overwrite/delete) is small.
* Updating class serials invalidate all method caches of the class and
sub-classes.
* Proposed approach only invalidate the method cache of only one ME.
See [Feature #16614] for more details.
73 lines
1.7 KiB
Ruby
73 lines
1.7 KiB
Ruby
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puts <<EOS
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/* -*- c -*- */
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#if 1 /* enable or disable this optimization */
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/* DO NOT EDIT THIS FILE DIRECTLY
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*
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* This file is generated by tool/mk_call_iseq_optimized.rb
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*/
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EOS
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P = (0..3)
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L = (0..5)
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def fname param, local
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"vm_call_iseq_setup_normal_0start_#{param}params_#{local}locals"
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end
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P.each{|param|
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L.each{|local|
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puts <<EOS
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static VALUE
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#{fname(param, local)}(rb_execution_context_t *ec, rb_control_frame_t *cfp, struct rb_calling_info *calling, struct rb_call_data *cd)
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{
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RB_DEBUG_COUNTER_INC(ccf_iseq_fix);
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return vm_call_iseq_setup_normal(ec, cfp, calling, vm_cc_cme(cd->cc), 0, #{param}, #{local});
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}
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EOS
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#
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}
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}
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puts <<EOS
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/* vm_call_iseq_handlers[param][local] */
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static const vm_call_handler vm_call_iseq_handlers[][#{L.to_a.size}] = {
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#{P.map{|param| '{' + L.map{|local| fname(param, local)}.join(",\n ") + '}'}.join(",\n")}
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};
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static inline vm_call_handler
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vm_call_iseq_setup_func(const struct rb_callinfo *ci, const int param_size, const int local_size)
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{
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if (UNLIKELY(vm_ci_flag(ci) & VM_CALL_TAILCALL)) {
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return &vm_call_iseq_setup_tailcall_0start;
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}
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else if (0) { /* to disable optimize */
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return &vm_call_iseq_setup_normal_0start;
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}
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else {
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if (param_size <= #{P.end} &&
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local_size <= #{L.end}) {
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VM_ASSERT(local_size >= 0);
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return vm_call_iseq_handlers[param_size][local_size];
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}
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return &vm_call_iseq_setup_normal_0start;
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}
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}
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#else
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static inline vm_call_handler
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vm_call_iseq_setup_func(const struct rb_callinfo *ci, const int param_size, const int local_size)
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{
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if (UNLIKELY(vm_ci_flag(ci) & VM_CALL_TAILCALL)) {
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return &vm_call_iseq_setup_tailcall_0start;
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}
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else {
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return &vm_call_iseq_setup_normal_0start;
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}
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}
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#endif
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EOS
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