21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP 26 #define SHARE_VM_PRIMS_WHITEBOX_HPP 27 28 #include "prims/jni.h" 29 30 #include "memory/allocation.hpp" 31 #include "oops/oopsHierarchy.hpp" 32 33 // Entry macro to transition from JNI to VM state. 34 35 #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header) 36 #define WB_END JNI_END 37 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL 38 39 #define CHECK_JNI_EXCEPTION_(env, value) \ 40 do { \ 41 if (env->ExceptionCheck()) { \ 42 env->ExceptionClear(); \ 43 return(value); \ 44 } \ 45 } while (0) 46 47 #define CHECK_JNI_EXCEPTION(env) \ 48 do { \ 49 if (env->ExceptionCheck()) { \ 50 env->ExceptionClear(); \ 51 return; \ 52 } \ 53 } while (0) 54 55 class WhiteBox : public AllStatic { 56 private: 57 static bool _used; 58 public: 59 static bool used() { return _used; } 60 static void set_used() { _used = true; } 61 static int offset_for_field(const char* field_name, oop object, 62 Symbol* signature_symbol); 63 static const char* lookup_jstring(const char* field_name, oop object); 64 static bool lookup_bool(const char* field_name, oop object); 65 }; 66 67 68 69 #endif // SHARE_VM_PRIMS_WHITEBOX_HPP | 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP 26 #define SHARE_VM_PRIMS_WHITEBOX_HPP 27 28 #include "prims/jni.h" 29 30 #include "memory/allocation.hpp" 31 #include "oops/oopsHierarchy.hpp" 32 33 // Entry macro to transition from JNI to VM state. 34 35 #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header) 36 #define WB_END JNI_END 37 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL 38 39 #define CHECK_JNI_EXCEPTION_(env, value) \ 40 do { \ 41 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 42 if (HAS_PENDING_EXCEPTION) { \ 43 CLEAR_PENDING_EXCEPTION; \ 44 return(value); \ 45 } \ 46 } while (0) 47 48 #define CHECK_JNI_EXCEPTION(env) \ 49 do { \ 50 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 51 if (HAS_PENDING_EXCEPTION) { \ 52 CLEAR_PENDING_EXCEPTION; \ 53 return; \ 54 } \ 55 } while (0) 56 57 class WhiteBox : public AllStatic { 58 private: 59 static bool _used; 60 public: 61 static bool used() { return _used; } 62 static void set_used() { _used = true; } 63 static int offset_for_field(const char* field_name, oop object, 64 Symbol* signature_symbol); 65 static const char* lookup_jstring(const char* field_name, oop object); 66 static bool lookup_bool(const char* field_name, oop object); 67 }; 68 69 70 71 #endif // SHARE_VM_PRIMS_WHITEBOX_HPP |