150
151 // Get summary strings for system information in buffer provided
152 static void get_summary_cpu_info(char* buf, size_t buflen);
153 static void get_summary_os_info(char* buf, size_t buflen);
154
155 static void initialize_initial_active_processor_count();
156
157 LINUX_ONLY(static void pd_init_container_support();)
158
159 public:
160 static void init(void); // Called before command line parsing
161
162 static void init_container_support() { // Called during command line parsing.
163 LINUX_ONLY(pd_init_container_support();)
164 }
165
166 static void init_before_ergo(void); // Called after command line parsing
167 // before VM ergonomics processing.
168 static jint init_2(void); // Called after command line parsing
169 // and VM ergonomics processing
170 static void init_globals(void) { // Called from init_globals() in init.cpp
171 init_globals_ext();
172 }
173
174 // unset environment variable
175 static bool unsetenv(const char* name);
176
177 static bool have_special_privileges();
178
179 static jlong javaTimeMillis();
180 static jlong javaTimeNanos();
181 static void javaTimeNanos_info(jvmtiTimerInfo *info_ptr);
182 static void javaTimeSystemUTC(jlong &seconds, jlong &nanos);
183 static void run_periodic_checks();
184 static bool supports_monotonic_clock();
185
186 // Returns the elapsed time in seconds since the vm started.
187 static double elapsedTime();
188
189 // Returns real time in seconds since an arbitrary point
190 // in the past.
191 static bool getTimesSecs(double* process_real_time,
192 double* process_user_time,
808 static jlong thread_cpu_time(Thread* t, bool user_sys_cpu_time);
809
810 // Return a bunch of info about the timers.
811 // Note that the returned info for these two functions may be different
812 // on some platforms
813 static void current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr);
814 static void thread_cpu_time_info(jvmtiTimerInfo *info_ptr);
815
816 static bool is_thread_cpu_time_supported();
817
818 // System loadavg support. Returns -1 if load average cannot be obtained.
819 static int loadavg(double loadavg[], int nelem);
820
821 // Amount beyond the callee frame size that we bang the stack.
822 static int extra_bang_size_in_bytes();
823
824 static char** split_path(const char* path, size_t* elements, size_t file_name_length);
825
826 // support for mapping non-volatile memory using MAP_SYNC
827 static bool supports_map_sync();
828
829 // Extensions
830 #include "runtime/os_ext.hpp"
831
832 public:
833 class CrashProtectionCallback : public StackObj {
834 public:
835 virtual void call() = 0;
836 };
837
838 // Platform dependent stuff
839 #ifndef _WINDOWS
840 # include "os_posix.hpp"
841 #endif
842 #include OS_CPU_HEADER(os)
843 #include OS_HEADER(os)
844
845 #ifndef OS_NATIVE_THREAD_CREATION_FAILED_MSG
846 #define OS_NATIVE_THREAD_CREATION_FAILED_MSG "unable to create native thread: possibly out of memory or process/resource limits reached"
847 #endif
848
849 public:
850 #ifndef PLATFORM_PRINT_NATIVE_STACK
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150
151 // Get summary strings for system information in buffer provided
152 static void get_summary_cpu_info(char* buf, size_t buflen);
153 static void get_summary_os_info(char* buf, size_t buflen);
154
155 static void initialize_initial_active_processor_count();
156
157 LINUX_ONLY(static void pd_init_container_support();)
158
159 public:
160 static void init(void); // Called before command line parsing
161
162 static void init_container_support() { // Called during command line parsing.
163 LINUX_ONLY(pd_init_container_support();)
164 }
165
166 static void init_before_ergo(void); // Called after command line parsing
167 // before VM ergonomics processing.
168 static jint init_2(void); // Called after command line parsing
169 // and VM ergonomics processing
170
171 // unset environment variable
172 static bool unsetenv(const char* name);
173
174 static bool have_special_privileges();
175
176 static jlong javaTimeMillis();
177 static jlong javaTimeNanos();
178 static void javaTimeNanos_info(jvmtiTimerInfo *info_ptr);
179 static void javaTimeSystemUTC(jlong &seconds, jlong &nanos);
180 static void run_periodic_checks();
181 static bool supports_monotonic_clock();
182
183 // Returns the elapsed time in seconds since the vm started.
184 static double elapsedTime();
185
186 // Returns real time in seconds since an arbitrary point
187 // in the past.
188 static bool getTimesSecs(double* process_real_time,
189 double* process_user_time,
805 static jlong thread_cpu_time(Thread* t, bool user_sys_cpu_time);
806
807 // Return a bunch of info about the timers.
808 // Note that the returned info for these two functions may be different
809 // on some platforms
810 static void current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr);
811 static void thread_cpu_time_info(jvmtiTimerInfo *info_ptr);
812
813 static bool is_thread_cpu_time_supported();
814
815 // System loadavg support. Returns -1 if load average cannot be obtained.
816 static int loadavg(double loadavg[], int nelem);
817
818 // Amount beyond the callee frame size that we bang the stack.
819 static int extra_bang_size_in_bytes();
820
821 static char** split_path(const char* path, size_t* elements, size_t file_name_length);
822
823 // support for mapping non-volatile memory using MAP_SYNC
824 static bool supports_map_sync();
825
826 public:
827 class CrashProtectionCallback : public StackObj {
828 public:
829 virtual void call() = 0;
830 };
831
832 // Platform dependent stuff
833 #ifndef _WINDOWS
834 # include "os_posix.hpp"
835 #endif
836 #include OS_CPU_HEADER(os)
837 #include OS_HEADER(os)
838
839 #ifndef OS_NATIVE_THREAD_CREATION_FAILED_MSG
840 #define OS_NATIVE_THREAD_CREATION_FAILED_MSG "unable to create native thread: possibly out of memory or process/resource limits reached"
841 #endif
842
843 public:
844 #ifndef PLATFORM_PRINT_NATIVE_STACK
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