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comparison src/cpu/x86/vm/vtableStubs_x86_64.cpp @ 12056:740e263c80c6

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8003424: Enable Class Data Sharing for CompressedOops 8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops 8005933: The -Xshare:auto option is ignored for -server Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs. Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank
author hseigel
date Thu, 15 Aug 2013 20:04:10 -0400
parents cd3d6a6b95d9
children 7944aba7ba41
comparison
equal deleted inserted replaced
12055:d96f52012aaa 12056:740e263c80c6
209 209
210 int VtableStub::pd_code_size_limit(bool is_vtable_stub) { 210 int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
211 if (is_vtable_stub) { 211 if (is_vtable_stub) {
212 // Vtable stub size 212 // Vtable stub size
213 return (DebugVtables ? 512 : 24) + (CountCompiledCalls ? 13 : 0) + 213 return (DebugVtables ? 512 : 24) + (CountCompiledCalls ? 13 : 0) +
214 (UseCompressedKlassPointers ? 16 : 0); // 1 leaq can be 3 bytes + 1 long 214 (UseCompressedKlassPointers ? MacroAssembler::instr_size_for_decode_klass_not_null() : 0);
215 } else { 215 } else {
216 // Itable stub size 216 // Itable stub size
217 return (DebugVtables ? 512 : 74) + (CountCompiledCalls ? 13 : 0) + 217 return (DebugVtables ? 512 : 74) + (CountCompiledCalls ? 13 : 0) +
218 (UseCompressedKlassPointers ? 32 : 0); // 2 leaqs 218 (UseCompressedKlassPointers ? MacroAssembler::instr_size_for_decode_klass_not_null() : 0);
219 } 219 }
220 // In order to tune these parameters, run the JVM with VM options 220 // In order to tune these parameters, run the JVM with VM options
221 // +PrintMiscellaneous and +WizardMode to see information about 221 // +PrintMiscellaneous and +WizardMode to see information about
222 // actual itable stubs. Look for lines like this: 222 // actual itable stubs. Look for lines like this:
223 // itable #1 at 0x5551212[71] left over: 3 223 // itable #1 at 0x5551212[71] left over: 3