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comparison src/share/vm/runtime/deoptimization.hpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents d2a62e0f25eb
children e522a00b91aa 63a4eb8bcd23 b8413a9cbb84
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
330 // Preserves incoming arguments to the popped frame when it is 330 // Preserves incoming arguments to the popped frame when it is
331 // returning to a deoptimized caller 331 // returning to a deoptimized caller
332 static void popframe_preserve_args(JavaThread* thread, int bytes_to_save, void* start_address); 332 static void popframe_preserve_args(JavaThread* thread, int bytes_to_save, void* start_address);
333 333
334 private: 334 private:
335 static methodDataOop get_method_data(JavaThread* thread, methodHandle m, bool create_if_missing); 335 static MethodData* get_method_data(JavaThread* thread, methodHandle m, bool create_if_missing);
336 // Update the mdo's count and per-BCI reason bits, returning previous state: 336 // Update the mdo's count and per-BCI reason bits, returning previous state:
337 static ProfileData* query_update_method_data(methodDataHandle trap_mdo, 337 static ProfileData* query_update_method_data(MethodData* trap_mdo,
338 int trap_bci, 338 int trap_bci,
339 DeoptReason reason, 339 DeoptReason reason,
340 //outputs: 340 //outputs:
341 uint& ret_this_trap_count, 341 uint& ret_this_trap_count,
342 bool& ret_maybe_prior_trap, 342 bool& ret_maybe_prior_trap,
353 353
354 static juint _deoptimization_hist[Reason_LIMIT][1+Action_LIMIT][BC_CASE_LIMIT]; 354 static juint _deoptimization_hist[Reason_LIMIT][1+Action_LIMIT][BC_CASE_LIMIT];
355 // Note: Histogram array size is 1-2 Kb. 355 // Note: Histogram array size is 1-2 Kb.
356 356
357 public: 357 public:
358 static void update_method_data_from_interpreter(methodDataHandle trap_mdo, int trap_bci, int reason); 358 static void update_method_data_from_interpreter(MethodData* trap_mdo, int trap_bci, int reason);
359 }; 359 };
360 360
361 class DeoptimizationMarker : StackObj { // for profiling 361 class DeoptimizationMarker : StackObj { // for profiling
362 static bool _is_active; 362 static bool _is_active;
363 public: 363 public: