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comparison src/share/vm/code/codeCache.hpp @ 989:148e5441d916

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6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr
author jrose
date Tue, 15 Sep 2009 21:53:47 -0700
parents d1605aabd0a1
children 5f24d0319e54
comparison
equal deleted inserted replaced
987:00977607da34 989:148e5441d916
43 // 4422213 or 4436291 for details. 43 // 4422213 or 4436291 for details.
44 static CodeHeap * _heap; 44 static CodeHeap * _heap;
45 static int _number_of_blobs; 45 static int _number_of_blobs;
46 static int _number_of_nmethods_with_dependencies; 46 static int _number_of_nmethods_with_dependencies;
47 static bool _needs_cache_clean; 47 static bool _needs_cache_clean;
48 static nmethod* _scavenge_root_nmethods; // linked via nm->scavenge_root_link()
48 49
49 static void verify_if_often() PRODUCT_RETURN; 50 static void verify_if_often() PRODUCT_RETURN;
51
52 static void mark_scavenge_root_nmethods() PRODUCT_RETURN;
53 static void verify_perm_nmethods(CodeBlobClosure* f_or_null) PRODUCT_RETURN;
54
50 public: 55 public:
51 56
52 // Initialization 57 // Initialization
53 static void initialize(); 58 static void initialize();
54 59
59 static int alignment_offset(); // guaranteed offset of first CodeBlob byte within alignment unit (i.e., allocation header) 64 static int alignment_offset(); // guaranteed offset of first CodeBlob byte within alignment unit (i.e., allocation header)
60 static void free(CodeBlob* cb); // frees a CodeBlob 65 static void free(CodeBlob* cb); // frees a CodeBlob
61 static void flush(); // flushes all CodeBlobs 66 static void flush(); // flushes all CodeBlobs
62 static bool contains(void *p); // returns whether p is included 67 static bool contains(void *p); // returns whether p is included
63 static void blobs_do(void f(CodeBlob* cb)); // iterates over all CodeBlobs 68 static void blobs_do(void f(CodeBlob* cb)); // iterates over all CodeBlobs
69 static void blobs_do(CodeBlobClosure* f); // iterates over all CodeBlobs
64 static void nmethods_do(void f(nmethod* nm)); // iterates over all nmethods 70 static void nmethods_do(void f(nmethod* nm)); // iterates over all nmethods
65 71
66 // Lookup 72 // Lookup
67 static CodeBlob* find_blob(void* start); 73 static CodeBlob* find_blob(void* start);
68 static nmethod* find_nmethod(void* start); 74 static nmethod* find_nmethod(void* start);
104 // to) any unmarked codeBlobs in the cache. Sets "marked_for_unloading" 110 // to) any unmarked codeBlobs in the cache. Sets "marked_for_unloading"
105 // to "true" iff some code got unloaded. 111 // to "true" iff some code got unloaded.
106 static void do_unloading(BoolObjectClosure* is_alive, 112 static void do_unloading(BoolObjectClosure* is_alive,
107 OopClosure* keep_alive, 113 OopClosure* keep_alive,
108 bool unloading_occurred); 114 bool unloading_occurred);
109 static void oops_do(OopClosure* f); 115 static void oops_do(OopClosure* f) {
116 CodeBlobToOopClosure oopc(f, /*do_marking=*/ false);
117 blobs_do(&oopc);
118 }
119 static void asserted_non_scavengable_nmethods_do(CodeBlobClosure* f = NULL) PRODUCT_RETURN;
120 static void scavenge_root_nmethods_do(CodeBlobClosure* f);
121
122 static nmethod* scavenge_root_nmethods() { return _scavenge_root_nmethods; }
123 static void set_scavenge_root_nmethods(nmethod* nm) { _scavenge_root_nmethods = nm; }
124 static void add_scavenge_root_nmethod(nmethod* nm);
125 static void drop_scavenge_root_nmethod(nmethod* nm);
126 static void prune_scavenge_root_nmethods();
110 127
111 // Printing/debugging 128 // Printing/debugging
112 static void print() PRODUCT_RETURN; // prints summary 129 static void print() PRODUCT_RETURN; // prints summary
113 static void print_internals(); 130 static void print_internals();
114 static void verify(); // verifies the code cache 131 static void verify(); // verifies the code cache
132 static void print_trace(const char* event, CodeBlob* cb, int size = 0) PRODUCT_RETURN;
115 133
116 // The full limits of the codeCache 134 // The full limits of the codeCache
117 static address low_bound() { return (address) _heap->low_boundary(); } 135 static address low_bound() { return (address) _heap->low_boundary(); }
118 static address high_bound() { return (address) _heap->high_boundary(); } 136 static address high_bound() { return (address) _heap->high_boundary(); }
119 137