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
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;
55 static int _number_of_adapters;
56 static int _number_of_nmethods;
57 static int _number_of_nmethods_with_dependencies;
58 static bool _needs_cache_clean;
59 static nmethod* _scavenge_root_nmethods; // linked via nm->scavenge_root_link()
60
61 static void verify_if_often() PRODUCT_RETURN;
62
63 static void mark_scavenge_root_nmethods() PRODUCT_RETURN;
64 static void verify_perm_nmethods(CodeBlobClosure* f_or_null) PRODUCT_RETURN;
65
66 static int _codemem_full_count;
67
|
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
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 class ShenandoahParallelCodeCacheIterator;
46
47 class CodeCache : AllStatic {
48 friend class VMStructs;
49 friend class ShenandoahParallelCodeCacheIterator;
50 private:
51 // CodeHeap is malloc()'ed at startup and never deleted during shutdown,
52 // so that the generated assembly code is always there when it's needed.
53 // This may cause memory leak, but is necessary, for now. See 4423824,
54 // 4422213 or 4436291 for details.
55 static CodeHeap * _heap;
56 static int _number_of_blobs;
57 static int _number_of_adapters;
58 static int _number_of_nmethods;
59 static int _number_of_nmethods_with_dependencies;
60 static bool _needs_cache_clean;
61 static nmethod* _scavenge_root_nmethods; // linked via nm->scavenge_root_link()
62
63 static void verify_if_often() PRODUCT_RETURN;
64
65 static void mark_scavenge_root_nmethods() PRODUCT_RETURN;
66 static void verify_perm_nmethods(CodeBlobClosure* f_or_null) PRODUCT_RETURN;
67
68 static int _codemem_full_count;
69
|