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comparison src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp @ 20356:439f0d76cff3

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8029524: Remove unsused method CollectedHeap::unsafe_max_alloc() Reviewed-by: pliden, jmasa
author brutisso
date Tue, 26 Aug 2014 10:28:43 +0200
parents 1f1d373cd044
children 4d3a43351904
comparison
equal deleted inserted replaced
20355:47e8e40b94d3 20356:439f0d76cff3
2334 2334
2335 g1_policy()->phase_times()->record_evac_fail_recalc_used_time((os::elapsedTime() - recalculate_used_start) * 1000.0); 2335 g1_policy()->phase_times()->record_evac_fail_recalc_used_time((os::elapsedTime() - recalculate_used_start) * 1000.0);
2336 return blk.result(); 2336 return blk.result();
2337 } 2337 }
2338 2338
2339 size_t G1CollectedHeap::unsafe_max_alloc() {
2340 if (num_free_regions() > 0) return HeapRegion::GrainBytes;
2341 // otherwise, is there space in the current allocation region?
2342
2343 // We need to store the current allocation region in a local variable
2344 // here. The problem is that this method doesn't take any locks and
2345 // there may be other threads which overwrite the current allocation
2346 // region field. attempt_allocation(), for example, sets it to NULL
2347 // and this can happen *after* the NULL check here but before the call
2348 // to free(), resulting in a SIGSEGV. Note that this doesn't appear
2349 // to be a problem in the optimized build, since the two loads of the
2350 // current allocation region field are optimized away.
2351 HeapRegion* hr = _mutator_alloc_region.get();
2352 if (hr == NULL) {
2353 return 0;
2354 }
2355 return hr->free();
2356 }
2357
2358 bool G1CollectedHeap::should_do_concurrent_full_gc(GCCause::Cause cause) { 2339 bool G1CollectedHeap::should_do_concurrent_full_gc(GCCause::Cause cause) {
2359 switch (cause) { 2340 switch (cause) {
2360 case GCCause::_gc_locker: return GCLockerInvokesConcurrent; 2341 case GCCause::_gc_locker: return GCLockerInvokesConcurrent;
2361 case GCCause::_java_lang_system_gc: return ExplicitGCInvokesConcurrent; 2342 case GCCause::_java_lang_system_gc: return ExplicitGCInvokesConcurrent;
2362 case GCCause::_g1_humongous_allocation: return true; 2343 case GCCause::_g1_humongous_allocation: return true;