15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #ifndef OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
25 #define OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
26
27 #include "gc/z/zBackingFile_linux_x86.hpp"
28 #include "gc/z/zMemory.hpp"
29
30 class ZErrno;
31 class ZPhysicalMemory;
32
33 class ZPhysicalMemoryBacking {
34 private:
35 ZMemoryManager _manager;
36 ZBackingFile _file;
37
38 void check_max_map_count(size_t max_capacity) const;
39 void check_available_space_on_filesystem(size_t max_capacity) const;
40 void map_failed(ZErrno err) const;
41
42 void advise_view(uintptr_t addr, size_t size) const;
43 void pretouch_view(uintptr_t addr, size_t size) const;
44 void map_view(ZPhysicalMemory pmem, uintptr_t addr, bool pretouch) const;
45 void unmap_view(ZPhysicalMemory pmem, uintptr_t addr) const;
46
47 public:
48 ZPhysicalMemoryBacking(size_t max_capacity);
49
50 bool is_initialized() const;
51
52 size_t try_expand(size_t old_capacity, size_t new_capacity);
53
54 ZPhysicalMemory alloc(size_t size);
55 void free(ZPhysicalMemory pmem);
56
57 uintptr_t nmt_address(uintptr_t offset) const;
58
59 void map(ZPhysicalMemory pmem, uintptr_t offset) const;
60 void unmap(ZPhysicalMemory pmem, uintptr_t offset) const;
61
62 void debug_map(ZPhysicalMemory pmem, uintptr_t offset) const;
63 void debug_unmap(ZPhysicalMemory pmem, uintptr_t offset) const;
64 };
65
66 #endif // OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
|
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #ifndef OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
25 #define OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
26
27 #include "gc/z/zBackingFile_linux_x86.hpp"
28 #include "gc/z/zMemory.hpp"
29
30 class ZErrno;
31 class ZPhysicalMemory;
32
33 class ZPhysicalMemoryBacking {
34 private:
35 ZBackingFile _file;
36 ZMemoryManager _committed;
37 ZMemoryManager _uncommitted;
38
39 void warn_available_space(size_t max) const;
40 void warn_max_map_count(size_t max) const;
41
42 void map_failed(ZErrno err) const;
43
44 void advise_view(uintptr_t addr, size_t size, int advice) const;
45 void pretouch_view(uintptr_t addr, size_t size) const;
46 void map_view(const ZPhysicalMemory& pmem, uintptr_t addr, bool pretouch) const;
47 void unmap_view(const ZPhysicalMemory& pmem, uintptr_t addr) const;
48
49 public:
50 bool is_initialized() const;
51
52 void warn_commit_limits(size_t max) const;
53 bool supports_uncommit();
54
55 size_t commit(size_t size);
56 size_t uncommit(size_t size);
57
58 ZPhysicalMemory alloc(size_t size);
59 void free(const ZPhysicalMemory& pmem);
60
61 uintptr_t nmt_address(uintptr_t offset) const;
62
63 void map(const ZPhysicalMemory& pmem, uintptr_t offset) const;
64 void unmap(const ZPhysicalMemory& pmem, uintptr_t offset) const;
65
66 void debug_map(const ZPhysicalMemory& pmem, uintptr_t offset) const;
67 void debug_unmap(const ZPhysicalMemory& pmem, uintptr_t offset) const;
68 };
69
70 #endif // OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
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