128
129 // For debug long safepoint
130 static void print_safepoint_timeout(SafepointTimeoutReason timeout_reason);
131
132 public:
133
134 // Main entry points
135
136 // Roll all threads forward to safepoint. Must be called by the
137 // VMThread or CMS_thread.
138 static void begin();
139 static void end(); // Start all suspended threads again...
140
141 static bool safepoint_safe(JavaThread *thread, JavaThreadState state);
142
143 static void check_for_lazy_critical_native(JavaThread *thread, JavaThreadState state);
144
145 // Query
146 inline static bool is_at_safepoint() { return _state == _synchronized; }
147 inline static bool is_synchronizing() { return _state == _synchronizing; }
148
149 inline static bool do_call_back() {
150 return (_state != _not_synchronized);
151 }
152
153 inline static void increment_jni_active_count() {
154 assert_locked_or_safepoint(Safepoint_lock);
155 _current_jni_active_count++;
156 }
157
158 // Called when a thread voluntarily blocks
159 static void block(JavaThread *thread);
160 static void signal_thread_at_safepoint() { _waiting_to_block--; }
161
162 // Exception handling for page polling
163 static void handle_polling_page_exception(JavaThread *thread);
164
165 // VM Thread interface for determining safepoint rate
166 static long last_non_safepoint_interval() {
167 return os::javaTimeMillis() - _end_of_last_safepoint;
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128
129 // For debug long safepoint
130 static void print_safepoint_timeout(SafepointTimeoutReason timeout_reason);
131
132 public:
133
134 // Main entry points
135
136 // Roll all threads forward to safepoint. Must be called by the
137 // VMThread or CMS_thread.
138 static void begin();
139 static void end(); // Start all suspended threads again...
140
141 static bool safepoint_safe(JavaThread *thread, JavaThreadState state);
142
143 static void check_for_lazy_critical_native(JavaThread *thread, JavaThreadState state);
144
145 // Query
146 inline static bool is_at_safepoint() { return _state == _synchronized; }
147 inline static bool is_synchronizing() { return _state == _synchronizing; }
148 inline static int safepoint_counter() { return _safepoint_counter; }
149
150 inline static bool do_call_back() {
151 return (_state != _not_synchronized);
152 }
153
154 inline static void increment_jni_active_count() {
155 assert_locked_or_safepoint(Safepoint_lock);
156 _current_jni_active_count++;
157 }
158
159 // Called when a thread voluntarily blocks
160 static void block(JavaThread *thread);
161 static void signal_thread_at_safepoint() { _waiting_to_block--; }
162
163 // Exception handling for page polling
164 static void handle_polling_page_exception(JavaThread *thread);
165
166 // VM Thread interface for determining safepoint rate
167 static long last_non_safepoint_interval() {
168 return os::javaTimeMillis() - _end_of_last_safepoint;
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