39 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
40 // __sigaction(), signal() is loaded
41 static struct sigaction *(*get_signal_action)(int);
42
43 static void check_signal_handler(int sig);
44
45 static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *);
46 static int (*_pthread_setname_np)(pthread_t, const char*);
47
48 static address _initial_thread_stack_bottom;
49 static uintptr_t _initial_thread_stack_size;
50
51 static const char *_glibc_version;
52 static const char *_libpthread_version;
53
54 static bool _supports_fast_thread_cpu_time;
55
56 static GrowableArray<int>* _cpu_to_node;
57 static GrowableArray<int>* _nindex_to_node;
58
59 protected:
60
61 static julong _physical_memory;
62 static pthread_t _main_thread;
63 static int _page_size;
64
65 static julong available_memory();
66 static julong physical_memory() { return _physical_memory; }
67 static void set_physical_memory(julong phys_mem) { _physical_memory = phys_mem; }
68 static int active_processor_count();
69
70 static void initialize_system_info();
71
72 static int commit_memory_impl(char* addr, size_t bytes, bool exec);
73 static int commit_memory_impl(char* addr, size_t bytes,
74 size_t alignment_hint, bool exec);
75
76 static void set_glibc_version(const char *s) { _glibc_version = s; }
77 static void set_libpthread_version(const char *s) { _libpthread_version = s; }
78
79 static void rebuild_cpu_to_node_map();
80 static void rebuild_nindex_to_node_map();
81 static GrowableArray<int>* cpu_to_node() { return _cpu_to_node; }
82 static GrowableArray<int>* nindex_to_node() { return _nindex_to_node; }
83
84 static size_t find_large_page_size();
85 static size_t setup_large_page_size();
86
87 static bool setup_large_page_type(size_t page_size);
88 static bool transparent_huge_pages_sanity_check(bool warn, size_t pages_size);
89 static bool hugetlbfs_sanity_check(bool warn, size_t page_size);
90
91 static char* reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec);
92 static char* reserve_memory_special_huge_tlbfs(size_t bytes, size_t alignment, char* req_addr, bool exec);
93 static char* reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec);
94 static char* reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec);
95
96 static bool release_memory_special_impl(char* base, size_t bytes);
97 static bool release_memory_special_shm(char* base, size_t bytes);
98 static bool release_memory_special_huge_tlbfs(char* base, size_t bytes);
99
100 static void print_full_memory_info(outputStream* st);
101 static void print_container_info(outputStream* st);
102 static void print_steal_info(outputStream* st);
103 static void print_distro_info(outputStream* st);
104 static void print_libversion_info(outputStream* st);
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39 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
40 // __sigaction(), signal() is loaded
41 static struct sigaction *(*get_signal_action)(int);
42
43 static void check_signal_handler(int sig);
44
45 static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *);
46 static int (*_pthread_setname_np)(pthread_t, const char*);
47
48 static address _initial_thread_stack_bottom;
49 static uintptr_t _initial_thread_stack_size;
50
51 static const char *_glibc_version;
52 static const char *_libpthread_version;
53
54 static bool _supports_fast_thread_cpu_time;
55
56 static GrowableArray<int>* _cpu_to_node;
57 static GrowableArray<int>* _nindex_to_node;
58
59 static size_t _default_large_page_size;
60
61 protected:
62
63 static julong _physical_memory;
64 static pthread_t _main_thread;
65 static int _page_size;
66
67 static julong available_memory();
68 static julong physical_memory() { return _physical_memory; }
69 static void set_physical_memory(julong phys_mem) { _physical_memory = phys_mem; }
70 static int active_processor_count();
71
72 static void initialize_system_info();
73
74 static int commit_memory_impl(char* addr, size_t bytes, bool exec);
75 static int commit_memory_impl(char* addr, size_t bytes,
76 size_t alignment_hint, bool exec);
77
78 static void set_glibc_version(const char *s) { _glibc_version = s; }
79 static void set_libpthread_version(const char *s) { _libpthread_version = s; }
80
81 static void rebuild_cpu_to_node_map();
82 static void rebuild_nindex_to_node_map();
83 static GrowableArray<int>* cpu_to_node() { return _cpu_to_node; }
84 static GrowableArray<int>* nindex_to_node() { return _nindex_to_node; }
85
86 static size_t default_large_page_size();
87 static size_t find_default_large_page_size();
88 static bool is_valid_large_page_size(size_t page_size);
89 static size_t setup_large_page_size();
90
91 static bool setup_large_page_type(size_t page_size);
92 static bool transparent_huge_pages_sanity_check(bool warn, size_t pages_size);
93 static bool hugetlbfs_sanity_check(bool warn, size_t page_size);
94
95 static char* reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec);
96 static char* reserve_memory_special_huge_tlbfs(size_t bytes, size_t alignment, char* req_addr, bool exec);
97 static char* reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec);
98 static char* reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec);
99
100 static bool release_memory_special_impl(char* base, size_t bytes);
101 static bool release_memory_special_shm(char* base, size_t bytes);
102 static bool release_memory_special_huge_tlbfs(char* base, size_t bytes);
103
104 static void print_full_memory_info(outputStream* st);
105 static void print_container_info(outputStream* st);
106 static void print_steal_info(outputStream* st);
107 static void print_distro_info(outputStream* st);
108 static void print_libversion_info(outputStream* st);
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