157 |
157 |
158 |
158 |
159 //----------------------------------------------------------------------------- |
159 //----------------------------------------------------------------------------- |
160 // High-level access to an inline cache. Guaranteed to be MT-safe. |
160 // High-level access to an inline cache. Guaranteed to be MT-safe. |
161 |
161 |
|
162 CompiledIC::CompiledIC(nmethod* nm, NativeCall* call) |
|
163 : _ic_call(call) |
|
164 { |
|
165 address ic_call = call->instruction_address(); |
|
166 |
|
167 assert(ic_call != NULL, "ic_call address must be set"); |
|
168 assert(nm != NULL, "must pass nmethod"); |
|
169 assert(nm->contains(ic_call), "must be in nmethod"); |
|
170 |
|
171 // Search for the ic_call at the given address. |
|
172 RelocIterator iter(nm, ic_call, ic_call+1); |
|
173 bool ret = iter.next(); |
|
174 assert(ret == true, "relocInfo must exist at this address"); |
|
175 assert(iter.addr() == ic_call, "must find ic_call"); |
|
176 if (iter.type() == relocInfo::virtual_call_type) { |
|
177 virtual_call_Relocation* r = iter.virtual_call_reloc(); |
|
178 _is_optimized = false; |
|
179 _value = nativeMovConstReg_at(r->cached_value()); |
|
180 } else { |
|
181 assert(iter.type() == relocInfo::opt_virtual_call_type, "must be a virtual call"); |
|
182 _is_optimized = true; |
|
183 _value = NULL; |
|
184 } |
|
185 } |
162 |
186 |
163 bool CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) { |
187 bool CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) { |
164 assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
188 assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
165 assert(!is_optimized(), "cannot set an optimized virtual call to megamorphic"); |
189 assert(!is_optimized(), "cannot set an optimized virtual call to megamorphic"); |
166 assert(is_call_to_compiled() || is_call_to_interpreted(), "going directly to megamorphic?"); |
190 assert(is_call_to_compiled() || is_call_to_interpreted(), "going directly to megamorphic?"); |