Mercurial > hg > graal-compiler
annotate src/share/vm/code/codeCache.hpp @ 10114:a7fb14888912
8006952: Slow VM due to excessive code cache freelist iteration
Summary: Remove continous free block requirement
Reviewed-by: kvn
| author | neliasso |
|---|---|
| date | Thu, 11 Apr 2013 13:57:44 +0200 |
| parents | 3c786355ffb4 |
| children | 0cfa93c2fcc4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1538
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1538
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1538
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CODE_CODECACHE_HPP |
| 26 #define SHARE_VM_CODE_CODECACHE_HPP | |
| 27 | |
| 28 #include "code/codeBlob.hpp" | |
| 29 #include "memory/allocation.hpp" | |
| 30 #include "memory/heap.hpp" | |
| 31 #include "oops/instanceKlass.hpp" | |
| 32 #include "oops/oopsHierarchy.hpp" | |
| 33 | |
| 0 | 34 // The CodeCache implements the code cache for various pieces of generated |
| 35 // code, e.g., compiled java methods, runtime stubs, transition frames, etc. | |
| 36 // The entries in the CodeCache are all CodeBlob's. | |
| 37 | |
| 38 // Implementation: | |
| 39 // - Each CodeBlob occupies one chunk of memory. | |
| 40 // - Like the offset table in oldspace the zone has at table for | |
| 41 // locating a method given a addess of an instruction. | |
| 42 | |
| 43 class OopClosure; | |
| 44 class DepChange; | |
| 45 | |
| 46 class CodeCache : AllStatic { | |
| 47 friend class VMStructs; | |
| 48 private: | |
| 49 // CodeHeap is malloc()'ed at startup and never deleted during shutdown, | |
| 50 // so that the generated assembly code is always there when it's needed. | |
| 51 // This may cause memory leak, but is necessary, for now. See 4423824, | |
| 52 // 4422213 or 4436291 for details. | |
| 53 static CodeHeap * _heap; | |
| 54 static int _number_of_blobs; | |
|
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1552
diff
changeset
|
55 static int _number_of_adapters; |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1552
diff
changeset
|
56 static int _number_of_nmethods; |
| 0 | 57 static int _number_of_nmethods_with_dependencies; |
| 58 static bool _needs_cache_clean; | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
59 static nmethod* _scavenge_root_nmethods; // linked via nm->scavenge_root_link() |
| 1202 | 60 static nmethod* _saved_nmethods; // linked via nm->saved_nmethod_look() |
| 0 | 61 |
| 62 static void verify_if_often() PRODUCT_RETURN; | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
63 |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
64 static void mark_scavenge_root_nmethods() PRODUCT_RETURN; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
65 static void verify_perm_nmethods(CodeBlobClosure* f_or_null) PRODUCT_RETURN; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
66 |
| 0 | 67 public: |
| 68 | |
| 69 // Initialization | |
| 70 static void initialize(); | |
| 71 | |
| 72 // Allocation/administration | |
|
10114
a7fb14888912
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
8864
diff
changeset
|
73 static CodeBlob* allocate(int size, bool is_critical = false); // allocates a new CodeBlob |
| 0 | 74 static void commit(CodeBlob* cb); // called when the allocated CodeBlob has been filled |
| 75 static int alignment_unit(); // guaranteed alignment of all CodeBlobs | |
| 76 static int alignment_offset(); // guaranteed offset of first CodeBlob byte within alignment unit (i.e., allocation header) | |
| 77 static void free(CodeBlob* cb); // frees a CodeBlob | |
| 78 static void flush(); // flushes all CodeBlobs | |
| 79 static bool contains(void *p); // returns whether p is included | |
| 80 static void blobs_do(void f(CodeBlob* cb)); // iterates over all CodeBlobs | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
81 static void blobs_do(CodeBlobClosure* f); // iterates over all CodeBlobs |
| 0 | 82 static void nmethods_do(void f(nmethod* nm)); // iterates over all nmethods |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
83 static void alive_nmethods_do(void f(nmethod* nm)); // iterates over all alive nmethods |
| 0 | 84 |
| 85 // Lookup | |
| 86 static CodeBlob* find_blob(void* start); | |
| 87 static nmethod* find_nmethod(void* start); | |
| 88 | |
| 89 // Lookup that does not fail if you lookup a zombie method (if you call this, be sure to know | |
| 90 // what you are doing) | |
| 91 static CodeBlob* find_blob_unsafe(void* start) { | |
| 6197 | 92 // NMT can walk the stack before code cache is created |
| 93 if (_heap == NULL) return NULL; | |
| 94 | |
| 0 | 95 CodeBlob* result = (CodeBlob*)_heap->find_start(start); |
|
107
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
96 // this assert is too strong because the heap code will return the |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
97 // heapblock containing start. That block can often be larger than |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
98 // the codeBlob itself. If you look up an address that is within |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
99 // the heapblock but not in the codeBlob you will assert. |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
100 // |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
101 // Most things will not lookup such bad addresses. However |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
102 // AsyncGetCallTrace can see intermediate frames and get that kind |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
103 // of invalid address and so can a developer using hsfind. |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
104 // |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
105 // The more correct answer is to return NULL if blob_contains() returns |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
106 // false. |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
107 // assert(result == NULL || result->blob_contains((address)start), "found wrong CodeBlob"); |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
108 |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
109 if (result != NULL && !result->blob_contains((address)start)) { |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
110 result = NULL; |
|
93b6525e3b82
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents:
0
diff
changeset
|
111 } |
| 0 | 112 return result; |
| 113 } | |
| 114 | |
| 115 // Iteration | |
| 116 static CodeBlob* first(); | |
| 117 static CodeBlob* next (CodeBlob* cb); | |
| 118 static CodeBlob* alive(CodeBlob *cb); | |
| 119 static nmethod* alive_nmethod(CodeBlob *cb); | |
|
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1202
diff
changeset
|
120 static nmethod* first_nmethod(); |
|
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1202
diff
changeset
|
121 static nmethod* next_nmethod (CodeBlob* cb); |
| 0 | 122 static int nof_blobs() { return _number_of_blobs; } |
|
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1552
diff
changeset
|
123 static int nof_adapters() { return _number_of_adapters; } |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1552
diff
changeset
|
124 static int nof_nmethods() { return _number_of_nmethods; } |
| 0 | 125 |
| 126 // GC support | |
| 127 static void gc_epilogue(); | |
| 128 static void gc_prologue(); | |
|
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2353
diff
changeset
|
129 static void verify_oops(); |
| 0 | 130 // If "unloading_occurred" is true, then unloads (i.e., breaks root links |
| 131 // to) any unmarked codeBlobs in the cache. Sets "marked_for_unloading" | |
| 132 // to "true" iff some code got unloaded. | |
|
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
brutisso
parents:
6725
diff
changeset
|
133 static void do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
134 static void oops_do(OopClosure* f) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
135 CodeBlobToOopClosure oopc(f, /*do_marking=*/ false); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
136 blobs_do(&oopc); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
137 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
138 static void asserted_non_scavengable_nmethods_do(CodeBlobClosure* f = NULL) PRODUCT_RETURN; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
139 static void scavenge_root_nmethods_do(CodeBlobClosure* f); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
140 |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
141 static nmethod* scavenge_root_nmethods() { return _scavenge_root_nmethods; } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
142 static void set_scavenge_root_nmethods(nmethod* nm) { _scavenge_root_nmethods = nm; } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
143 static void add_scavenge_root_nmethod(nmethod* nm); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
144 static void drop_scavenge_root_nmethod(nmethod* nm); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
145 static void prune_scavenge_root_nmethods(); |
| 0 | 146 |
| 147 // Printing/debugging | |
|
7595
9deda4d8e126
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
6787
diff
changeset
|
148 static void print(); // prints summary |
| 0 | 149 static void print_internals(); |
| 150 static void verify(); // verifies the code cache | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
196
diff
changeset
|
151 static void print_trace(const char* event, CodeBlob* cb, int size = 0) PRODUCT_RETURN; |
|
7595
9deda4d8e126
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
6787
diff
changeset
|
152 static void print_summary(outputStream* st, bool detailed = true); // Prints a summary of the code cache usage |
|
2353
1c0cf339481b
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
2091
diff
changeset
|
153 static void log_state(outputStream* st); |
| 0 | 154 |
| 155 // The full limits of the codeCache | |
| 156 static address low_bound() { return (address) _heap->low_boundary(); } | |
| 157 static address high_bound() { return (address) _heap->high_boundary(); } | |
| 158 | |
| 159 // Profiling | |
| 160 static address first_address(); // first address used for CodeBlobs | |
| 161 static address last_address(); // last address used for CodeBlobs | |
| 162 static size_t capacity() { return _heap->capacity(); } | |
| 163 static size_t max_capacity() { return _heap->max_capacity(); } | |
| 164 static size_t unallocated_capacity() { return _heap->unallocated_capacity(); } | |
|
10114
a7fb14888912
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
8864
diff
changeset
|
165 static bool needs_flushing() { return unallocated_capacity() < CodeCacheFlushingMinimumFreeSpace; } |
| 0 | 166 |
| 167 static bool needs_cache_clean() { return _needs_cache_clean; } | |
| 168 static void set_needs_cache_clean(bool v) { _needs_cache_clean = v; } | |
| 169 static void clear_inline_caches(); // clear all inline caches | |
| 170 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
171 static nmethod* find_and_remove_saved_code(Method* m); |
| 1202 | 172 static void remove_saved_code(nmethod* nm); |
| 173 static void speculatively_disconnect(nmethod* nm); | |
| 174 | |
| 0 | 175 // Deoptimization |
| 176 static int mark_for_deoptimization(DepChange& changes); | |
| 177 #ifdef HOTSWAP | |
| 178 static int mark_for_evol_deoptimization(instanceKlassHandle dependee); | |
| 179 #endif // HOTSWAP | |
| 180 | |
| 181 static void mark_all_nmethods_for_deoptimization(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
182 static int mark_for_deoptimization(Method* dependee); |
| 0 | 183 static void make_marked_nmethods_zombies(); |
| 184 static void make_marked_nmethods_not_entrant(); | |
| 185 | |
| 186 // tells how many nmethods have dependencies | |
| 187 static int number_of_nmethods_with_dependencies(); | |
| 188 }; | |
| 1972 | 189 |
| 190 #endif // SHARE_VM_CODE_CODECACHE_HPP |