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 const size_t _granule_size;
38
39 void check_max_map_count(size_t max_capacity, size_t granule_size) const;
40 void check_available_space_on_filesystem(size_t max_capacity) const;
41 void map_failed(ZErrno err) const;
42
43 void advise_view(uintptr_t addr, size_t size) const;
44 void pretouch_view(uintptr_t addr, size_t size) const;
45 void map_view(ZPhysicalMemory pmem, uintptr_t addr, bool pretouch) const;
46 void unmap_view(ZPhysicalMemory pmem, uintptr_t addr) const;
47
48 public:
49 ZPhysicalMemoryBacking(size_t max_capacity, size_t granule_size);
50
51 bool is_initialized() const;
52
53 size_t try_expand(size_t old_capacity, size_t new_capacity);
54
55 ZPhysicalMemory alloc(size_t size);
56 void free(ZPhysicalMemory pmem);
57
58 uintptr_t nmt_address(uintptr_t offset) const;
59
60 void map(ZPhysicalMemory pmem, uintptr_t offset) const;
61 void unmap(ZPhysicalMemory pmem, uintptr_t offset) const;
62 void flip(ZPhysicalMemory pmem, uintptr_t offset) const;
63 };
64
65 #endif // OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
|
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 void flip(ZPhysicalMemory pmem, uintptr_t offset) const;
62 };
63
64 #endif // OS_CPU_LINUX_X86_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_X86_HPP
|