Tue, 11 Sep 2012 14:59:23 +0200
7197350: NPG: jvmtiHeapReferenceCallback receives incorrect reference_kind for system class roots
Summary: Fix the iteration over the system classes and report the correct reference kind.
Reviewed-by: coleenp, rbackman
1 /*
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13 * accompanied this code).
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25 #ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
26 #define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
28 #include "runtime/os.hpp"
30 // Explicit C-heap memory management
32 void trace_heap_malloc(size_t size, const char* name, void *p);
33 void trace_heap_free(void *p);
35 #ifndef PRODUCT
36 // Increments unsigned long value for statistics (not atomic on MP).
37 inline void inc_stat_counter(volatile julong* dest, julong add_value) {
38 #if defined(SPARC) || defined(X86)
39 // Sparc and X86 have atomic jlong (8 bytes) instructions
40 julong value = Atomic::load((volatile jlong*)dest);
41 value += add_value;
42 Atomic::store((jlong)value, (volatile jlong*)dest);
43 #else
44 // possible word-tearing during load/store
45 *dest += add_value;
46 #endif
47 }
48 #endif
50 // allocate using malloc; will fail if no memory available
51 inline char* AllocateHeap(size_t size, MEMFLAGS flags, address pc = 0) {
52 if (pc == 0) {
53 pc = CURRENT_PC;
54 }
55 char* p = (char*) os::malloc(size, flags, pc);
56 #ifdef ASSERT
57 if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p);
58 #endif
59 if (p == NULL) vm_exit_out_of_memory(size, "AllocateHeap");
60 return p;
61 }
63 inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags) {
64 char* p = (char*) os::realloc(old, size, flags, CURRENT_PC);
65 #ifdef ASSERT
66 if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p);
67 #endif
68 if (p == NULL) vm_exit_out_of_memory(size, "ReallocateHeap");
69 return p;
70 }
72 inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) {
73 #ifdef ASSERT
74 if (PrintMallocFree) trace_heap_free(p);
75 #endif
76 os::free(p, memflags);
77 }
80 template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size,
81 address caller_pc){
82 #ifdef ASSERT
83 void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
84 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
85 return p;
86 #else
87 return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
88 #endif
89 }
91 template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size,
92 const std::nothrow_t& nothrow_constant, address caller_pc) {
93 #ifdef ASSERT
94 void* p = os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
95 if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
96 return p;
97 #else
98 return os::malloc(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
99 #endif
100 }
102 template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){
103 FreeHeap(p, F);
104 }
107 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP