179 // HeapAlignment, and we just made sure that NewSize is aligned to
180 // GenAlignment. In initialize_flags() we verified that HeapAlignment
181 // is a multiple of GenAlignment.
182 FLAG_SET_ERGO(OldSize, MaxHeapSize - NewSize);
183 } else {
184 FLAG_SET_ERGO(MaxHeapSize, align_up(NewSize + OldSize, HeapAlignment));
185 }
186 }
187
188 // Update NewSize, if possible, to avoid sizing the young gen too small when only
189 // OldSize is set on the command line.
190 if (FLAG_IS_CMDLINE(OldSize) && !FLAG_IS_CMDLINE(NewSize)) {
191 if (OldSize < InitialHeapSize) {
192 size_t new_size = InitialHeapSize - OldSize;
193 if (new_size >= MinNewSize && new_size <= MaxNewSize) {
194 FLAG_SET_ERGO(NewSize, new_size);
195 }
196 }
197 }
198
199 always_do_update_barrier = UseConcMarkSweepGC;
200
201 DEBUG_ONLY(assert_flags();)
202 }
203
204 // Values set on the command line win over any ergonomically
205 // set command line parameters.
206 // Ergonomic choice of parameters are done before this
207 // method is called. Values for command line parameters such as NewSize
208 // and MaxNewSize feed those ergonomic choices into this method.
209 // This method makes the final generation sizings consistent with
210 // themselves and with overall heap sizings.
211 // In the absence of explicitly set command line flags, policies
212 // such as the use of NewRatio are used to size the generation.
213
214 // Minimum sizes of the generations may be different than
215 // the initial sizes. An inconsistency is permitted here
216 // in the total size that can be specified explicitly by
217 // command line specification of OldSize and NewSize and
218 // also a command line specification of -Xms. Issue a warning
219 // but allow the values to pass.
220 void GenArguments::initialize_size_info() {
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179 // HeapAlignment, and we just made sure that NewSize is aligned to
180 // GenAlignment. In initialize_flags() we verified that HeapAlignment
181 // is a multiple of GenAlignment.
182 FLAG_SET_ERGO(OldSize, MaxHeapSize - NewSize);
183 } else {
184 FLAG_SET_ERGO(MaxHeapSize, align_up(NewSize + OldSize, HeapAlignment));
185 }
186 }
187
188 // Update NewSize, if possible, to avoid sizing the young gen too small when only
189 // OldSize is set on the command line.
190 if (FLAG_IS_CMDLINE(OldSize) && !FLAG_IS_CMDLINE(NewSize)) {
191 if (OldSize < InitialHeapSize) {
192 size_t new_size = InitialHeapSize - OldSize;
193 if (new_size >= MinNewSize && new_size <= MaxNewSize) {
194 FLAG_SET_ERGO(NewSize, new_size);
195 }
196 }
197 }
198
199 DEBUG_ONLY(assert_flags();)
200 }
201
202 // Values set on the command line win over any ergonomically
203 // set command line parameters.
204 // Ergonomic choice of parameters are done before this
205 // method is called. Values for command line parameters such as NewSize
206 // and MaxNewSize feed those ergonomic choices into this method.
207 // This method makes the final generation sizings consistent with
208 // themselves and with overall heap sizings.
209 // In the absence of explicitly set command line flags, policies
210 // such as the use of NewRatio are used to size the generation.
211
212 // Minimum sizes of the generations may be different than
213 // the initial sizes. An inconsistency is permitted here
214 // in the total size that can be specified explicitly by
215 // command line specification of OldSize and NewSize and
216 // also a command line specification of -Xms. Issue a warning
217 // but allow the values to pass.
218 void GenArguments::initialize_size_info() {
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