1061 // Communicates an alternative call target to an i2c stub from a JavaCall .
1062 address _alternate_call_target;
1063 } _jvmci;
1064
1065 // Support for high precision, thread sensitive counters in JVMCI compiled code.
1066 jlong* _jvmci_counters;
1067
1068 public:
1069 static jlong* _jvmci_old_thread_counters;
1070 static void collect_counters(typeArrayOop array);
1071 private:
1072 #endif // INCLUDE_JVMCI
1073
1074 StackGuardState _stack_guard_state;
1075
1076 // Precompute the limit of the stack as used in stack overflow checks.
1077 // We load it from here to simplify the stack overflow check in assembly.
1078 address _stack_overflow_limit;
1079 address _reserved_stack_activation;
1080
1081 // Compiler exception handling (NOTE: The _exception_oop is *NOT* the same as _pending_exception. It is
1082 // used to temp. parsing values into and out of the runtime system during exception handling for compiled
1083 // code)
1084 volatile oop _exception_oop; // Exception thrown in compiled code
1085 volatile address _exception_pc; // PC where exception happened
1086 volatile address _exception_handler_pc; // PC for handler of exception
1087 volatile int _is_method_handle_return; // true (== 1) if the current exception PC is a MethodHandle call site.
1088
1089 private:
1090 // support for JNI critical regions
1091 jint _jni_active_critical; // count of entries into JNI critical region
1092
1093 // Checked JNI: function name requires exception check
1094 char* _pending_jni_exception_check_fn;
1095
1096 // For deadlock detection.
1097 int _depth_first_number;
1098
1099 // JVMTI PopFrame support
1100 // This is set to popframe_pending to signal that top Java frame should be popped immediately
1699 static ByteSize pending_deoptimization_offset() { return byte_offset_of(JavaThread, _pending_deoptimization); }
1700 static ByteSize pending_monitorenter_offset() { return byte_offset_of(JavaThread, _pending_monitorenter); }
1701 static ByteSize pending_failed_speculation_offset() { return byte_offset_of(JavaThread, _pending_failed_speculation); }
1702 static ByteSize jvmci_alternate_call_target_offset() { return byte_offset_of(JavaThread, _jvmci._alternate_call_target); }
1703 static ByteSize jvmci_implicit_exception_pc_offset() { return byte_offset_of(JavaThread, _jvmci._implicit_exception_pc); }
1704 static ByteSize jvmci_counters_offset() { return byte_offset_of(JavaThread, _jvmci_counters); }
1705 #endif // INCLUDE_JVMCI
1706 static ByteSize exception_oop_offset() { return byte_offset_of(JavaThread, _exception_oop); }
1707 static ByteSize exception_pc_offset() { return byte_offset_of(JavaThread, _exception_pc); }
1708 static ByteSize exception_handler_pc_offset() { return byte_offset_of(JavaThread, _exception_handler_pc); }
1709 static ByteSize stack_overflow_limit_offset() { return byte_offset_of(JavaThread, _stack_overflow_limit); }
1710 static ByteSize is_method_handle_return_offset() { return byte_offset_of(JavaThread, _is_method_handle_return); }
1711 static ByteSize stack_guard_state_offset() { return byte_offset_of(JavaThread, _stack_guard_state); }
1712 static ByteSize reserved_stack_activation_offset() { return byte_offset_of(JavaThread, _reserved_stack_activation); }
1713 static ByteSize suspend_flags_offset() { return byte_offset_of(JavaThread, _suspend_flags); }
1714
1715 static ByteSize do_not_unlock_if_synchronized_offset() { return byte_offset_of(JavaThread, _do_not_unlock_if_synchronized); }
1716 static ByteSize should_post_on_exceptions_flag_offset() {
1717 return byte_offset_of(JavaThread, _should_post_on_exceptions_flag);
1718 }
1719
1720 // Returns the jni environment for this thread
1721 JNIEnv* jni_environment() { return &_jni_environment; }
1722
1723 static JavaThread* thread_from_jni_environment(JNIEnv* env) {
1724 JavaThread *thread_from_jni_env = (JavaThread*)((intptr_t)env - in_bytes(jni_environment_offset()));
1725 // Only return NULL if thread is off the thread list; starting to
1726 // exit should not return NULL.
1727 if (thread_from_jni_env->is_terminated()) {
1728 thread_from_jni_env->block_if_vm_exited();
1729 return NULL;
1730 } else {
1731 return thread_from_jni_env;
1732 }
1733 }
1734
1735 // JNI critical regions. These can nest.
1736 bool in_critical() { return _jni_active_critical > 0; }
1737 bool in_last_critical() { return _jni_active_critical == 1; }
1738 void enter_critical() {
|
1061 // Communicates an alternative call target to an i2c stub from a JavaCall .
1062 address _alternate_call_target;
1063 } _jvmci;
1064
1065 // Support for high precision, thread sensitive counters in JVMCI compiled code.
1066 jlong* _jvmci_counters;
1067
1068 public:
1069 static jlong* _jvmci_old_thread_counters;
1070 static void collect_counters(typeArrayOop array);
1071 private:
1072 #endif // INCLUDE_JVMCI
1073
1074 StackGuardState _stack_guard_state;
1075
1076 // Precompute the limit of the stack as used in stack overflow checks.
1077 // We load it from here to simplify the stack overflow check in assembly.
1078 address _stack_overflow_limit;
1079 address _reserved_stack_activation;
1080
1081 #ifdef _WIN64
1082 // On windows, in the stubGenerator, there's nowhere to save callee saved regs
1083 address _windows_saved_rsi;
1084 address _windows_saved_rdi;
1085 #endif // _WIN64
1086
1087 // Compiler exception handling (NOTE: The _exception_oop is *NOT* the same as _pending_exception. It is
1088 // used to temp. parsing values into and out of the runtime system during exception handling for compiled
1089 // code)
1090 volatile oop _exception_oop; // Exception thrown in compiled code
1091 volatile address _exception_pc; // PC where exception happened
1092 volatile address _exception_handler_pc; // PC for handler of exception
1093 volatile int _is_method_handle_return; // true (== 1) if the current exception PC is a MethodHandle call site.
1094
1095 private:
1096 // support for JNI critical regions
1097 jint _jni_active_critical; // count of entries into JNI critical region
1098
1099 // Checked JNI: function name requires exception check
1100 char* _pending_jni_exception_check_fn;
1101
1102 // For deadlock detection.
1103 int _depth_first_number;
1104
1105 // JVMTI PopFrame support
1106 // This is set to popframe_pending to signal that top Java frame should be popped immediately
1705 static ByteSize pending_deoptimization_offset() { return byte_offset_of(JavaThread, _pending_deoptimization); }
1706 static ByteSize pending_monitorenter_offset() { return byte_offset_of(JavaThread, _pending_monitorenter); }
1707 static ByteSize pending_failed_speculation_offset() { return byte_offset_of(JavaThread, _pending_failed_speculation); }
1708 static ByteSize jvmci_alternate_call_target_offset() { return byte_offset_of(JavaThread, _jvmci._alternate_call_target); }
1709 static ByteSize jvmci_implicit_exception_pc_offset() { return byte_offset_of(JavaThread, _jvmci._implicit_exception_pc); }
1710 static ByteSize jvmci_counters_offset() { return byte_offset_of(JavaThread, _jvmci_counters); }
1711 #endif // INCLUDE_JVMCI
1712 static ByteSize exception_oop_offset() { return byte_offset_of(JavaThread, _exception_oop); }
1713 static ByteSize exception_pc_offset() { return byte_offset_of(JavaThread, _exception_pc); }
1714 static ByteSize exception_handler_pc_offset() { return byte_offset_of(JavaThread, _exception_handler_pc); }
1715 static ByteSize stack_overflow_limit_offset() { return byte_offset_of(JavaThread, _stack_overflow_limit); }
1716 static ByteSize is_method_handle_return_offset() { return byte_offset_of(JavaThread, _is_method_handle_return); }
1717 static ByteSize stack_guard_state_offset() { return byte_offset_of(JavaThread, _stack_guard_state); }
1718 static ByteSize reserved_stack_activation_offset() { return byte_offset_of(JavaThread, _reserved_stack_activation); }
1719 static ByteSize suspend_flags_offset() { return byte_offset_of(JavaThread, _suspend_flags); }
1720
1721 static ByteSize do_not_unlock_if_synchronized_offset() { return byte_offset_of(JavaThread, _do_not_unlock_if_synchronized); }
1722 static ByteSize should_post_on_exceptions_flag_offset() {
1723 return byte_offset_of(JavaThread, _should_post_on_exceptions_flag);
1724 }
1725
1726 #ifdef _WIN64
1727 static ByteSize windows_saved_rsi_offset() { return byte_offset_of(JavaThread, _windows_saved_rsi); }
1728 static ByteSize windows_saved_rdi_offset() { return byte_offset_of(JavaThread, _windows_saved_rdi); }
1729 #endif // _WIN64
1730
1731 // Returns the jni environment for this thread
1732 JNIEnv* jni_environment() { return &_jni_environment; }
1733
1734 static JavaThread* thread_from_jni_environment(JNIEnv* env) {
1735 JavaThread *thread_from_jni_env = (JavaThread*)((intptr_t)env - in_bytes(jni_environment_offset()));
1736 // Only return NULL if thread is off the thread list; starting to
1737 // exit should not return NULL.
1738 if (thread_from_jni_env->is_terminated()) {
1739 thread_from_jni_env->block_if_vm_exited();
1740 return NULL;
1741 } else {
1742 return thread_from_jni_env;
1743 }
1744 }
1745
1746 // JNI critical regions. These can nest.
1747 bool in_critical() { return _jni_active_critical > 0; }
1748 bool in_last_critical() { return _jni_active_critical == 1; }
1749 void enter_critical() {
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