21 * questions.
22 *
23 */
24
25 #ifndef OS_LINUX_OS_LINUX_HPP
26 #define OS_LINUX_OS_LINUX_HPP
27
28 // Linux_OS defines the interface to Linux operating systems
29
30 // Information about the protection of the page at address '0' on this os.
31 static bool zero_page_read_protected() { return true; }
32
33 class Linux {
34 friend class os;
35 friend class OSContainer;
36 friend class TestReserveMemorySpecial;
37
38 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
39 // __sigaction(), signal() is loaded
40 static struct sigaction *(*get_signal_action)(int);
41 static struct sigaction *get_preinstalled_handler(int);
42 static void save_preinstalled_handler(int, struct sigaction&);
43
44 static void check_signal_handler(int sig);
45
46 static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *);
47 static int (*_pthread_setname_np)(pthread_t, const char*);
48
49 static address _initial_thread_stack_bottom;
50 static uintptr_t _initial_thread_stack_size;
51
52 static const char *_glibc_version;
53 static const char *_libpthread_version;
54
55 static bool _supports_fast_thread_cpu_time;
56
57 static GrowableArray<int>* _cpu_to_node;
58 static GrowableArray<int>* _nindex_to_node;
59
60 // 0x00000000 = uninitialized,
61 // 0x01000000 = kernel version unknown,
62 // otherwise a 32-bit number:
|
21 * questions.
22 *
23 */
24
25 #ifndef OS_LINUX_OS_LINUX_HPP
26 #define OS_LINUX_OS_LINUX_HPP
27
28 // Linux_OS defines the interface to Linux operating systems
29
30 // Information about the protection of the page at address '0' on this os.
31 static bool zero_page_read_protected() { return true; }
32
33 class Linux {
34 friend class os;
35 friend class OSContainer;
36 friend class TestReserveMemorySpecial;
37
38 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
39 // __sigaction(), signal() is loaded
40 static struct sigaction *(*get_signal_action)(int);
41
42 static void check_signal_handler(int sig);
43
44 static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *);
45 static int (*_pthread_setname_np)(pthread_t, const char*);
46
47 static address _initial_thread_stack_bottom;
48 static uintptr_t _initial_thread_stack_size;
49
50 static const char *_glibc_version;
51 static const char *_libpthread_version;
52
53 static bool _supports_fast_thread_cpu_time;
54
55 static GrowableArray<int>* _cpu_to_node;
56 static GrowableArray<int>* _nindex_to_node;
57
58 // 0x00000000 = uninitialized,
59 // 0x01000000 = kernel version unknown,
60 // otherwise a 32-bit number:
|