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
68 public:
69
70 // Initialization
71 static void initialize();
72
73 static void report_codemem_full();
74
75 // Allocation/administration
76 static CodeBlob* allocate(int size, bool is_critical = false); // allocates a new CodeBlob
77 static void commit(CodeBlob* cb); // called when the allocated CodeBlob has been filled
78 static int alignment_unit(); // guaranteed alignment of all CodeBlobs
79 static int alignment_offset(); // guaranteed offset of first CodeBlob byte within alignment unit (i.e., allocation header)
80 static void free(CodeBlob* cb); // frees a CodeBlob
81 static void flush(); // flushes all CodeBlobs
82 static bool contains(void *p); // returns whether p is included
83 static void blobs_do(void f(CodeBlob* cb)); // iterates over all CodeBlobs
84 static void blobs_do(CodeBlobClosure* f); // iterates over all CodeBlobs
85 static void nmethods_do(void f(nmethod* nm)); // iterates over all nmethods
86 static void alive_nmethods_do(void f(nmethod* nm)); // iterates over all alive nmethods
|
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 mark_scavenge_root_nmethods() PRODUCT_RETURN;
62 static void verify_perm_nmethods(CodeBlobClosure* f_or_null) PRODUCT_RETURN;
63
64 static int _codemem_full_count;
65 static size_t bytes_allocated_in_freelist() { return _heap->allocated_in_freelist(); }
66
67
68 public:
69
70 // Initialization
71 static void initialize();
72
73 static void report_codemem_full();
74
75 // Allocation/administration
76 static CodeBlob* allocate(int size, bool is_critical = false); // allocates a new CodeBlob
77 static void commit(CodeBlob* cb); // called when the allocated CodeBlob has been filled
78 static int alignment_unit(); // guaranteed alignment of all CodeBlobs
79 static int alignment_offset(); // guaranteed offset of first CodeBlob byte within alignment unit (i.e., allocation header)
80 static void free(CodeBlob* cb); // frees a CodeBlob
81 static void flush(); // flushes all CodeBlobs
82 static bool contains(void *p); // returns whether p is included
83 static void blobs_do(void f(CodeBlob* cb)); // iterates over all CodeBlobs
84 static void blobs_do(CodeBlobClosure* f); // iterates over all CodeBlobs
85 static void nmethods_do(void f(nmethod* nm)); // iterates over all nmethods
86 static void alive_nmethods_do(void f(nmethod* nm)); // iterates over all alive nmethods
|