290 log_trace(gc, heap)(" aggressive shrinking: _capacity_at_prologue: %.1fK capacity_after_gc: %.1fK expansion_for_promotion: %.1fK shrink_bytes: %.1fK",
291 capacity_after_gc / (double) K,
292 _capacity_at_prologue / (double) K,
293 expansion_for_promotion / (double) K,
294 shrink_bytes / (double) K);
295 }
296 // Don't shrink unless it's significant
297 if (shrink_bytes >= _min_heap_delta_bytes) {
298 shrink(shrink_bytes);
299 }
300 }
301
302 // Currently nothing to do.
303 void CardGeneration::prepare_for_verify() {}
304
305 void CardGeneration::space_iterate(SpaceClosure* blk,
306 bool usedOnly) {
307 blk->do_space(space());
308 }
309
310 void CardGeneration::younger_refs_iterate(OopsInGenClosure* blk, uint n_threads) {
311 blk->set_generation(this);
312 younger_refs_in_space_iterate(space(), blk, n_threads);
313 blk->reset_generation();
314 }
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290 log_trace(gc, heap)(" aggressive shrinking: _capacity_at_prologue: %.1fK capacity_after_gc: %.1fK expansion_for_promotion: %.1fK shrink_bytes: %.1fK",
291 capacity_after_gc / (double) K,
292 _capacity_at_prologue / (double) K,
293 expansion_for_promotion / (double) K,
294 shrink_bytes / (double) K);
295 }
296 // Don't shrink unless it's significant
297 if (shrink_bytes >= _min_heap_delta_bytes) {
298 shrink(shrink_bytes);
299 }
300 }
301
302 // Currently nothing to do.
303 void CardGeneration::prepare_for_verify() {}
304
305 void CardGeneration::space_iterate(SpaceClosure* blk,
306 bool usedOnly) {
307 blk->do_space(space());
308 }
309
310 void CardGeneration::younger_refs_iterate(OopIterateClosure* blk, uint n_threads) {
311 // Apply "cl->do_oop" to (the address of) (exactly) all the ref fields in
312 // "sp" that point into younger generations.
313 // The iteration is only over objects allocated at the start of the
314 // iterations; objects allocated as a result of applying the closure are
315 // not included.
316
317 HeapWord* gen_boundary = reserved().start();
318 _rs->younger_refs_in_space_iterate(space(), gen_boundary, blk, n_threads);
319 }
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