Mercurial > hg > truffle
comparison src/share/vm/runtime/virtualspace.hpp @ 697:922aedc96ef5
Merge
author | ysr |
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date | Fri, 03 Apr 2009 15:59:19 -0700 |
parents | 6bdd6923ba16 |
children | bd02caa94611 |
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696:f18338cf04b0 | 697:922aedc96ef5 |
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30 char* _base; | 30 char* _base; |
31 size_t _size; | 31 size_t _size; |
32 size_t _noaccess_prefix; | 32 size_t _noaccess_prefix; |
33 size_t _alignment; | 33 size_t _alignment; |
34 bool _special; | 34 bool _special; |
35 bool _executable; | |
35 | 36 |
36 // ReservedSpace | 37 // ReservedSpace |
37 ReservedSpace(char* base, size_t size, size_t alignment, bool special); | 38 ReservedSpace(char* base, size_t size, size_t alignment, bool special, |
39 bool executable); | |
38 void initialize(size_t size, size_t alignment, bool large, | 40 void initialize(size_t size, size_t alignment, bool large, |
39 char* requested_address, | 41 char* requested_address, |
40 const size_t noaccess_prefix); | 42 const size_t noaccess_prefix, |
43 bool executable); | |
41 | 44 |
42 // Release parts of an already-reserved memory region [addr, addr + len) to | 45 // Release parts of an already-reserved memory region [addr, addr + len) to |
43 // get a new region that has "compound alignment." Return the start of the | 46 // get a new region that has "compound alignment." Return the start of the |
44 // resulting region, or NULL on failure. | 47 // resulting region, or NULL on failure. |
45 // | 48 // |
73 const size_t noaccess_prefix = 0); | 76 const size_t noaccess_prefix = 0); |
74 ReservedSpace(const size_t prefix_size, const size_t prefix_align, | 77 ReservedSpace(const size_t prefix_size, const size_t prefix_align, |
75 const size_t suffix_size, const size_t suffix_align, | 78 const size_t suffix_size, const size_t suffix_align, |
76 char* requested_address, | 79 char* requested_address, |
77 const size_t noaccess_prefix = 0); | 80 const size_t noaccess_prefix = 0); |
81 ReservedSpace(size_t size, size_t alignment, bool large, bool executable); | |
78 | 82 |
79 // Accessors | 83 // Accessors |
80 char* base() const { return _base; } | 84 char* base() const { return _base; } |
81 size_t size() const { return _size; } | 85 size_t size() const { return _size; } |
82 size_t alignment() const { return _alignment; } | 86 size_t alignment() const { return _alignment; } |
83 bool special() const { return _special; } | 87 bool special() const { return _special; } |
84 | 88 bool executable() const { return _executable; } |
85 size_t noaccess_prefix() const { return _noaccess_prefix; } | 89 size_t noaccess_prefix() const { return _noaccess_prefix; } |
86 | 90 bool is_reserved() const { return _base != NULL; } |
87 bool is_reserved() const { return _base != NULL; } | |
88 void release(); | 91 void release(); |
89 | 92 |
90 // Splitting | 93 // Splitting |
91 ReservedSpace first_part(size_t partition_size, size_t alignment, | 94 ReservedSpace first_part(size_t partition_size, size_t alignment, |
92 bool split = false, bool realloc = true); | 95 bool split = false, bool realloc = true); |
124 ReservedHeapSpace(const size_t prefix_size, const size_t prefix_align, | 127 ReservedHeapSpace(const size_t prefix_size, const size_t prefix_align, |
125 const size_t suffix_size, const size_t suffix_align, | 128 const size_t suffix_size, const size_t suffix_align, |
126 char* requested_address); | 129 char* requested_address); |
127 }; | 130 }; |
128 | 131 |
132 // Class encapsulating behavior specific memory space for Code | |
133 class ReservedCodeSpace : public ReservedSpace { | |
134 public: | |
135 // Constructor | |
136 ReservedCodeSpace(size_t r_size, size_t rs_align, bool large); | |
137 }; | |
138 | |
129 // VirtualSpace is data structure for committing a previously reserved address range in smaller chunks. | 139 // VirtualSpace is data structure for committing a previously reserved address range in smaller chunks. |
130 | 140 |
131 class VirtualSpace VALUE_OBJ_CLASS_SPEC { | 141 class VirtualSpace VALUE_OBJ_CLASS_SPEC { |
132 friend class VMStructs; | 142 friend class VMStructs; |
133 private: | 143 private: |
140 char* _high; | 150 char* _high; |
141 | 151 |
142 // The entire space has been committed and pinned in memory, no | 152 // The entire space has been committed and pinned in memory, no |
143 // os::commit_memory() or os::uncommit_memory(). | 153 // os::commit_memory() or os::uncommit_memory(). |
144 bool _special; | 154 bool _special; |
155 | |
156 // Need to know if commit should be executable. | |
157 bool _executable; | |
145 | 158 |
146 // MPSS Support | 159 // MPSS Support |
147 // Each virtualspace region has a lower, middle, and upper region. | 160 // Each virtualspace region has a lower, middle, and upper region. |
148 // Each region has an end boundary and a high pointer which is the | 161 // Each region has an end boundary and a high pointer which is the |
149 // high water mark for the last allocated byte. | 162 // high water mark for the last allocated byte. |