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src/hotspot/share/gc/shared/gcCause.hpp

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rev 52710 : Upstream/backport Shenandoah to JDK11u
   1 /*
   2  * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  61     /* implementation specific */
  62 
  63     _tenured_generation_full,
  64     _metadata_GC_threshold,
  65     _metadata_GC_clear_soft_refs,
  66 
  67     _cms_generation_full,
  68     _cms_initial_mark,
  69     _cms_final_remark,
  70     _cms_concurrent_mark,
  71 
  72     _old_generation_expanded_on_last_scavenge,
  73     _old_generation_too_full_to_scavenge,
  74     _adaptive_size_policy,
  75 
  76     _g1_inc_collection_pause,
  77     _g1_humongous_allocation,
  78 
  79     _dcmd_gc_run,
  80 






  81     _z_timer,
  82     _z_warmup,
  83     _z_allocation_rate,
  84     _z_allocation_stall,
  85     _z_proactive,
  86 
  87     _last_gc_cause
  88   };
  89 
  90   inline static bool is_user_requested_gc(GCCause::Cause cause) {
  91     return (cause == GCCause::_java_lang_system_gc ||
  92             cause == GCCause::_dcmd_gc_run);
  93   }
  94 
  95   inline static bool is_serviceability_requested_gc(GCCause::Cause
  96                                                              cause) {
  97     return (cause == GCCause::_jvmti_force_gc ||
  98             cause == GCCause::_heap_inspection ||
  99             cause == GCCause::_heap_dump);
 100   }


 104     assert(cause != GCCause::_old_generation_too_full_to_scavenge &&
 105            cause != GCCause::_old_generation_expanded_on_last_scavenge,
 106            "This GCCause may be correct but is not expected yet: %s",
 107            to_string(cause));
 108     // _tenured_generation_full or _cms_generation_full for full tenured generations
 109     // _adaptive_size_policy for a full collection after a young GC
 110     // _allocation_failure is the generic cause a collection which could result
 111     // in the collection of the tenured generation if there is not enough space
 112     // in the tenured generation to support a young GC.
 113     return (cause == GCCause::_tenured_generation_full ||
 114             cause == GCCause::_cms_generation_full ||
 115             cause == GCCause::_adaptive_size_policy ||
 116             cause == GCCause::_allocation_failure);
 117   }
 118 
 119   // Causes for collection of the young generation
 120   inline static bool is_allocation_failure_gc(GCCause::Cause cause) {
 121     // _allocation_failure is the generic cause a collection for allocation failure
 122     // _adaptive_size_policy is for a collecton done before a full GC
 123     return (cause == GCCause::_allocation_failure ||
 124             cause == GCCause::_adaptive_size_policy);

 125   }
 126 
 127   // Return a string describing the GCCause.
 128   static const char* to_string(GCCause::Cause cause);
 129 };
 130 
 131 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
   1 /*
   2  * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  61     /* implementation specific */
  62 
  63     _tenured_generation_full,
  64     _metadata_GC_threshold,
  65     _metadata_GC_clear_soft_refs,
  66 
  67     _cms_generation_full,
  68     _cms_initial_mark,
  69     _cms_final_remark,
  70     _cms_concurrent_mark,
  71 
  72     _old_generation_expanded_on_last_scavenge,
  73     _old_generation_too_full_to_scavenge,
  74     _adaptive_size_policy,
  75 
  76     _g1_inc_collection_pause,
  77     _g1_humongous_allocation,
  78 
  79     _dcmd_gc_run,
  80 
  81     _shenandoah_stop_vm,
  82     _shenandoah_allocation_failure_evac,
  83     _shenandoah_concurrent_gc,
  84     _shenandoah_traversal_gc,
  85     _shenandoah_upgrade_to_full_gc,
  86 
  87     _z_timer,
  88     _z_warmup,
  89     _z_allocation_rate,
  90     _z_allocation_stall,
  91     _z_proactive,
  92 
  93     _last_gc_cause
  94   };
  95 
  96   inline static bool is_user_requested_gc(GCCause::Cause cause) {
  97     return (cause == GCCause::_java_lang_system_gc ||
  98             cause == GCCause::_dcmd_gc_run);
  99   }
 100 
 101   inline static bool is_serviceability_requested_gc(GCCause::Cause
 102                                                              cause) {
 103     return (cause == GCCause::_jvmti_force_gc ||
 104             cause == GCCause::_heap_inspection ||
 105             cause == GCCause::_heap_dump);
 106   }


 110     assert(cause != GCCause::_old_generation_too_full_to_scavenge &&
 111            cause != GCCause::_old_generation_expanded_on_last_scavenge,
 112            "This GCCause may be correct but is not expected yet: %s",
 113            to_string(cause));
 114     // _tenured_generation_full or _cms_generation_full for full tenured generations
 115     // _adaptive_size_policy for a full collection after a young GC
 116     // _allocation_failure is the generic cause a collection which could result
 117     // in the collection of the tenured generation if there is not enough space
 118     // in the tenured generation to support a young GC.
 119     return (cause == GCCause::_tenured_generation_full ||
 120             cause == GCCause::_cms_generation_full ||
 121             cause == GCCause::_adaptive_size_policy ||
 122             cause == GCCause::_allocation_failure);
 123   }
 124 
 125   // Causes for collection of the young generation
 126   inline static bool is_allocation_failure_gc(GCCause::Cause cause) {
 127     // _allocation_failure is the generic cause a collection for allocation failure
 128     // _adaptive_size_policy is for a collecton done before a full GC
 129     return (cause == GCCause::_allocation_failure ||
 130             cause == GCCause::_adaptive_size_policy ||
 131             cause == GCCause::_shenandoah_allocation_failure_evac);
 132   }
 133 
 134   // Return a string describing the GCCause.
 135   static const char* to_string(GCCause::Cause cause);
 136 };
 137 
 138 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
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