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8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson
parent
270fe13182
commit
3789983e89
56923 changed files with 3 additions and 15727 deletions
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/*
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* Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef OS_LINUX_VM_OS_LINUX_HPP
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#define OS_LINUX_VM_OS_LINUX_HPP
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// Linux_OS defines the interface to Linux operating systems
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// Information about the protection of the page at address '0' on this os.
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static bool zero_page_read_protected() { return true; }
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class Linux {
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friend class os;
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friend class TestReserveMemorySpecial;
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static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
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// __sigaction(), signal() is loaded
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static struct sigaction *(*get_signal_action)(int);
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static struct sigaction *get_preinstalled_handler(int);
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static void save_preinstalled_handler(int, struct sigaction&);
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static void check_signal_handler(int sig);
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static int (*_clock_gettime)(clockid_t, struct timespec *);
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static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *);
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static int (*_pthread_setname_np)(pthread_t, const char*);
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static address _initial_thread_stack_bottom;
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static uintptr_t _initial_thread_stack_size;
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static const char *_glibc_version;
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static const char *_libpthread_version;
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static bool _supports_fast_thread_cpu_time;
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static GrowableArray<int>* _cpu_to_node;
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static GrowableArray<int>* _nindex_to_node;
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// 0x00000000 = uninitialized,
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// 0x01000000 = kernel version unknown,
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// otherwise a 32-bit number:
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// Ox00AABBCC
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// AA, Major Version
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// BB, Minor Version
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// CC, Fix Version
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static uint32_t _os_version;
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protected:
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static julong _physical_memory;
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static pthread_t _main_thread;
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static Mutex* _createThread_lock;
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static int _page_size;
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static julong available_memory();
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static julong physical_memory() { return _physical_memory; }
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static void initialize_system_info();
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static int commit_memory_impl(char* addr, size_t bytes, bool exec);
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static int commit_memory_impl(char* addr, size_t bytes,
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size_t alignment_hint, bool exec);
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static void set_glibc_version(const char *s) { _glibc_version = s; }
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static void set_libpthread_version(const char *s) { _libpthread_version = s; }
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static void rebuild_cpu_to_node_map();
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static void rebuild_nindex_to_node_map();
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static GrowableArray<int>* cpu_to_node() { return _cpu_to_node; }
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static GrowableArray<int>* nindex_to_node() { return _nindex_to_node; }
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static size_t find_large_page_size();
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static size_t setup_large_page_size();
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static bool setup_large_page_type(size_t page_size);
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static bool transparent_huge_pages_sanity_check(bool warn, size_t pages_size);
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static bool hugetlbfs_sanity_check(bool warn, size_t page_size);
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static char* reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec);
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static char* reserve_memory_special_huge_tlbfs(size_t bytes, size_t alignment, char* req_addr, bool exec);
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static char* reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec);
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static char* reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec);
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static bool release_memory_special_impl(char* base, size_t bytes);
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static bool release_memory_special_shm(char* base, size_t bytes);
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static bool release_memory_special_huge_tlbfs(char* base, size_t bytes);
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static void print_full_memory_info(outputStream* st);
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static void print_distro_info(outputStream* st);
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static void print_libversion_info(outputStream* st);
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public:
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static bool _stack_is_executable;
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static void *dlopen_helper(const char *name, char *ebuf, int ebuflen);
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static void *dll_load_in_vmthread(const char *name, char *ebuf, int ebuflen);
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static void init_thread_fpu_state();
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static int get_fpu_control_word();
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static void set_fpu_control_word(int fpu_control);
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static pthread_t main_thread(void) { return _main_thread; }
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// returns kernel thread id (similar to LWP id on Solaris), which can be
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// used to access /proc
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static pid_t gettid();
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static void set_createThread_lock(Mutex* lk) { _createThread_lock = lk; }
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static Mutex* createThread_lock(void) { return _createThread_lock; }
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static void hotspot_sigmask(Thread* thread);
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static address initial_thread_stack_bottom(void) { return _initial_thread_stack_bottom; }
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static uintptr_t initial_thread_stack_size(void) { return _initial_thread_stack_size; }
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static bool is_initial_thread(void);
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static int page_size(void) { return _page_size; }
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static void set_page_size(int val) { _page_size = val; }
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static address ucontext_get_pc(const ucontext_t* uc);
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static void ucontext_set_pc(ucontext_t* uc, address pc);
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static intptr_t* ucontext_get_sp(const ucontext_t* uc);
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static intptr_t* ucontext_get_fp(const ucontext_t* uc);
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// For Analyzer Forte AsyncGetCallTrace profiling support:
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//
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// This interface should be declared in os_linux_i486.hpp, but
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// that file provides extensions to the os class and not the
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// Linux class.
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static ExtendedPC fetch_frame_from_ucontext(Thread* thread, const ucontext_t* uc,
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intptr_t** ret_sp, intptr_t** ret_fp);
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static bool get_frame_at_stack_banging_point(JavaThread* thread, ucontext_t* uc, frame* fr);
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// This boolean allows users to forward their own non-matching signals
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// to JVM_handle_linux_signal, harmlessly.
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static bool signal_handlers_are_installed;
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static int get_our_sigflags(int);
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static void set_our_sigflags(int, int);
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static void signal_sets_init();
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static void install_signal_handlers();
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static void set_signal_handler(int, bool);
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static bool is_sig_ignored(int sig);
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static sigset_t* unblocked_signals();
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static sigset_t* vm_signals();
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// For signal-chaining
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static struct sigaction *get_chained_signal_action(int sig);
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static bool chained_handler(int sig, siginfo_t* siginfo, void* context);
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// GNU libc and libpthread version strings
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static const char *glibc_version() { return _glibc_version; }
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static const char *libpthread_version() { return _libpthread_version; }
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static void libpthread_init();
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static void sched_getcpu_init();
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static bool libnuma_init();
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static void* libnuma_dlsym(void* handle, const char* name);
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// libnuma v2 (libnuma_1.2) symbols
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static void* libnuma_v2_dlsym(void* handle, const char* name);
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// Return default guard size for the specified thread type
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static size_t default_guard_size(os::ThreadType thr_type);
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static void capture_initial_stack(size_t max_size);
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// Stack overflow handling
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static bool manually_expand_stack(JavaThread * t, address addr);
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static int max_register_window_saves_before_flushing();
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// Real-time clock functions
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static void clock_init(void);
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// fast POSIX clocks support
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static void fast_thread_clock_init(void);
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static int clock_gettime(clockid_t clock_id, struct timespec *tp) {
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return _clock_gettime ? _clock_gettime(clock_id, tp) : -1;
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}
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static int pthread_getcpuclockid(pthread_t tid, clockid_t *clock_id) {
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return _pthread_getcpuclockid ? _pthread_getcpuclockid(tid, clock_id) : -1;
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}
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static bool supports_fast_thread_cpu_time() {
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return _supports_fast_thread_cpu_time;
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}
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static jlong fast_thread_cpu_time(clockid_t clockid);
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static void initialize_os_info();
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static bool os_version_is_known();
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static uint32_t os_version();
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// Stack repair handling
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// none present
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private:
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typedef int (*sched_getcpu_func_t)(void);
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typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
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typedef int (*numa_max_node_func_t)(void);
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typedef int (*numa_num_configured_nodes_func_t)(void);
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typedef int (*numa_available_func_t)(void);
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typedef int (*numa_tonode_memory_func_t)(void *start, size_t size, int node);
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typedef void (*numa_interleave_memory_func_t)(void *start, size_t size, unsigned long *nodemask);
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typedef void (*numa_interleave_memory_v2_func_t)(void *start, size_t size, struct bitmask* mask);
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typedef void (*numa_set_bind_policy_func_t)(int policy);
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typedef int (*numa_bitmask_isbitset_func_t)(struct bitmask *bmp, unsigned int n);
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typedef int (*numa_distance_func_t)(int node1, int node2);
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static sched_getcpu_func_t _sched_getcpu;
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static numa_node_to_cpus_func_t _numa_node_to_cpus;
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static numa_max_node_func_t _numa_max_node;
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static numa_num_configured_nodes_func_t _numa_num_configured_nodes;
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static numa_available_func_t _numa_available;
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static numa_tonode_memory_func_t _numa_tonode_memory;
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static numa_interleave_memory_func_t _numa_interleave_memory;
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static numa_interleave_memory_v2_func_t _numa_interleave_memory_v2;
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static numa_set_bind_policy_func_t _numa_set_bind_policy;
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static numa_bitmask_isbitset_func_t _numa_bitmask_isbitset;
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static numa_distance_func_t _numa_distance;
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static unsigned long* _numa_all_nodes;
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static struct bitmask* _numa_all_nodes_ptr;
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static struct bitmask* _numa_nodes_ptr;
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static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; }
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static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; }
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static void set_numa_max_node(numa_max_node_func_t func) { _numa_max_node = func; }
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static void set_numa_num_configured_nodes(numa_num_configured_nodes_func_t func) { _numa_num_configured_nodes = func; }
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static void set_numa_available(numa_available_func_t func) { _numa_available = func; }
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static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
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static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
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static void set_numa_interleave_memory_v2(numa_interleave_memory_v2_func_t func) { _numa_interleave_memory_v2 = func; }
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static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
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static void set_numa_bitmask_isbitset(numa_bitmask_isbitset_func_t func) { _numa_bitmask_isbitset = func; }
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static void set_numa_distance(numa_distance_func_t func) { _numa_distance = func; }
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static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
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static void set_numa_all_nodes_ptr(struct bitmask **ptr) { _numa_all_nodes_ptr = *ptr; }
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static void set_numa_nodes_ptr(struct bitmask **ptr) { _numa_nodes_ptr = *ptr; }
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static int sched_getcpu_syscall(void);
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public:
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static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
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static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
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return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
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}
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static int numa_max_node() { return _numa_max_node != NULL ? _numa_max_node() : -1; }
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static int numa_num_configured_nodes() {
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return _numa_num_configured_nodes != NULL ? _numa_num_configured_nodes() : -1;
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}
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static int numa_available() { return _numa_available != NULL ? _numa_available() : -1; }
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static int numa_tonode_memory(void *start, size_t size, int node) {
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return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1;
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}
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static void numa_interleave_memory(void *start, size_t size) {
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// Use v2 api if available
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if (_numa_interleave_memory_v2 != NULL && _numa_all_nodes_ptr != NULL) {
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_numa_interleave_memory_v2(start, size, _numa_all_nodes_ptr);
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} else if (_numa_interleave_memory != NULL && _numa_all_nodes != NULL) {
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_numa_interleave_memory(start, size, _numa_all_nodes);
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}
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}
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static void numa_set_bind_policy(int policy) {
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if (_numa_set_bind_policy != NULL) {
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_numa_set_bind_policy(policy);
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}
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}
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static int numa_distance(int node1, int node2) {
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return _numa_distance != NULL ? _numa_distance(node1, node2) : -1;
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}
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static int get_node_by_cpu(int cpu_id);
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static int get_existing_num_nodes();
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// Check if numa node is configured (non-zero memory node).
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static bool isnode_in_configured_nodes(unsigned int n) {
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if (_numa_bitmask_isbitset != NULL && _numa_all_nodes_ptr != NULL) {
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return _numa_bitmask_isbitset(_numa_all_nodes_ptr, n);
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} else
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return 0;
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}
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// Check if numa node exists in the system (including zero memory nodes).
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static bool isnode_in_existing_nodes(unsigned int n) {
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if (_numa_bitmask_isbitset != NULL && _numa_nodes_ptr != NULL) {
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return _numa_bitmask_isbitset(_numa_nodes_ptr, n);
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} else
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return 0;
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}
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};
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#endif // OS_LINUX_VM_OS_LINUX_HPP
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