1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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24 
25 #ifndef SHARE_PRIMS_WHITEBOX_HPP
26 #define SHARE_PRIMS_WHITEBOX_HPP
27 
28 #include "jni.h"
29 
30 #include "utilities/exceptions.hpp"
31 #include "memory/allocation.hpp"
32 #include "oops/oopsHierarchy.hpp"
33 #include "oops/symbol.hpp"
34 
35 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
36 
37 // Unconditionally clear pedantic pending JNI checks
38 class ClearPendingJniExcCheck : public StackObj {
39 private:
40   JavaThread* _thread;
41 public:
ClearPendingJniExcCheck(JNIEnv * env)42   ClearPendingJniExcCheck(JNIEnv* env) : _thread(JavaThread::thread_from_jni_environment(env)) {}
~ClearPendingJniExcCheck()43   ~ClearPendingJniExcCheck() {
44     _thread->clear_pending_jni_exception_check();
45   }
46 };
47 
48 class CodeBlob;
49 class CodeHeap;
50 class JavaThread;
51 
52 class WhiteBox : public AllStatic {
53  private:
54   static bool _used;
55  public:
56   static volatile bool compilation_locked;
used()57   static bool used()     { return _used; }
set_used()58   static void set_used() { _used = true; }
59   static int offset_for_field(const char* field_name, oop object,
60     Symbol* signature_symbol);
61   static const char* lookup_jstring(const char* field_name, oop object);
62   static bool lookup_bool(const char* field_name, oop object);
63   static int get_blob_type(const CodeBlob* code);
64   static CodeHeap* get_code_heap(int blob_type);
65   static CodeBlob* allocate_code_blob(int size, int blob_type);
66   static int array_bytes_to_length(size_t bytes);
67   static void register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
68     JNINativeMethod* method_array, int method_count);
69   static void register_extended(JNIEnv* env, jclass wbclass, JavaThread* thread);
70   static bool compile_method(Method* method, int comp_level, int bci, Thread* THREAD);
71 };
72 
73 #endif // SHARE_PRIMS_WHITEBOX_HPP
74