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src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp

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295   // separately and does not directly affect performance.
296   return uncolor_or_color_size + 4;
297 }
298 
299 void* ZBarrierSetC2::create_barrier_state(Arena* comp_arena) const {
300   return new (comp_arena) ZBarrierSetC2State(comp_arena);
301 }
302 
303 void ZBarrierSetC2::late_barrier_analysis() const {
304   compute_liveness_at_stubs();
305   analyze_dominating_barriers();
306 }
307 
308 void ZBarrierSetC2::emit_stubs(CodeBuffer& cb) const {
309   MacroAssembler masm(&cb);
310   GrowableArray<ZBarrierStubC2*>* const stubs = barrier_set_state()->stubs();
311   barrier_set_state()->set_stubs_start_offset(masm.offset());
312 
313   for (int i = 0; i < stubs->length(); i++) {
314     // Make sure there is enough space in the code buffer
315     if (cb.insts()->maybe_expand_to_ensure_remaining(PhaseOutput::MAX_inst_size) && cb.blob() == nullptr) {
316       ciEnv::current()->record_failure("CodeCache is full");
317       return;
318     }
319 
320     stubs->at(i)->emit_code(masm);
321   }
322 
323   masm.flush();
324 }
325 
326 int ZBarrierSetC2::estimate_stub_size() const {
327   Compile* const C = Compile::current();
328   BufferBlob* const blob = C->output()->scratch_buffer_blob();
329   GrowableArray<ZBarrierStubC2*>* const stubs = barrier_set_state()->stubs();
330   int size = 0;
331 
332   for (int i = 0; i < stubs->length(); i++) {
333     CodeBuffer cb(blob->content_begin(), checked_cast<CodeBuffer::csize_t>((address)C->output()->scratch_locs_memory() - blob->content_begin()));
334     MacroAssembler masm(&cb);
335     stubs->at(i)->emit_code(masm);

295   // separately and does not directly affect performance.
296   return uncolor_or_color_size + 4;
297 }
298 
299 void* ZBarrierSetC2::create_barrier_state(Arena* comp_arena) const {
300   return new (comp_arena) ZBarrierSetC2State(comp_arena);
301 }
302 
303 void ZBarrierSetC2::late_barrier_analysis() const {
304   compute_liveness_at_stubs();
305   analyze_dominating_barriers();
306 }
307 
308 void ZBarrierSetC2::emit_stubs(CodeBuffer& cb) const {
309   MacroAssembler masm(&cb);
310   GrowableArray<ZBarrierStubC2*>* const stubs = barrier_set_state()->stubs();
311   barrier_set_state()->set_stubs_start_offset(masm.offset());
312 
313   for (int i = 0; i < stubs->length(); i++) {
314     // Make sure there is enough space in the code buffer
315     if (cb.insts()->maybe_expand_to_ensure_remaining(PhaseOutput::max_inst_gcstub_size()) && cb.blob() == nullptr) {
316       ciEnv::current()->record_failure("CodeCache is full");
317       return;
318     }
319 
320     stubs->at(i)->emit_code(masm);
321   }
322 
323   masm.flush();
324 }
325 
326 int ZBarrierSetC2::estimate_stub_size() const {
327   Compile* const C = Compile::current();
328   BufferBlob* const blob = C->output()->scratch_buffer_blob();
329   GrowableArray<ZBarrierStubC2*>* const stubs = barrier_set_state()->stubs();
330   int size = 0;
331 
332   for (int i = 0; i < stubs->length(); i++) {
333     CodeBuffer cb(blob->content_begin(), checked_cast<CodeBuffer::csize_t>((address)C->output()->scratch_locs_memory() - blob->content_begin()));
334     MacroAssembler masm(&cb);
335     stubs->at(i)->emit_code(masm);
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