109
110
111 char* NativeLookup::long_jni_name(methodHandle method) {
112 // Signature ignore the wrapping parenteses and the trailing return type
113 stringStream st;
114 Symbol* signature = method->signature();
115 st.print("__");
116 // find ')'
117 int end;
118 for (end = 0; end < signature->utf8_length() && signature->byte_at(end) != ')'; end++);
119 // skip first '('
120 mangle_name_on(&st, signature, 1, end);
121 return st.as_string();
122 }
123
124 extern "C" {
125 void JNICALL JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls);
126 void JNICALL JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass unsafecls);
127 void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass);
128 void JNICALL JVM_RegisterWhiteBoxMethods(JNIEnv *env, jclass wbclass);
129 }
130
131 #define CC (char*) /* cast a literal from (const char*) */
132 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
133
134 static JNINativeMethod lookup_special_native_methods[] = {
135 { CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) },
136 { CC"Java_java_lang_invoke_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) },
137 { CC"Java_sun_misc_Perf_registerNatives", NULL, FN_PTR(JVM_RegisterPerfMethods) },
138 { CC"Java_sun_hotspot_WhiteBox_registerNatives", NULL, FN_PTR(JVM_RegisterWhiteBoxMethods) },
139 };
140
141 static address lookup_special_native(char* jni_name) {
142 int count = sizeof(lookup_special_native_methods) / sizeof(JNINativeMethod);
143 for (int i = 0; i < count; i++) {
144 // NB: To ignore the jni prefix and jni postfix strstr is used matching.
145 if (strstr(jni_name, lookup_special_native_methods[i].name) != NULL) {
146 return CAST_FROM_FN_PTR(address, lookup_special_native_methods[i].fnPtr);
147 }
148 }
149 return NULL;
150 }
151
152 address NativeLookup::lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS) {
153 address entry;
154 // Compute complete JNI name for style
155 stringStream st;
156 if (os_style) os::print_jni_name_prefix_on(&st, args_size);
157 st.print_raw(pure_name);
158 st.print_raw(long_name);
|
109
110
111 char* NativeLookup::long_jni_name(methodHandle method) {
112 // Signature ignore the wrapping parenteses and the trailing return type
113 stringStream st;
114 Symbol* signature = method->signature();
115 st.print("__");
116 // find ')'
117 int end;
118 for (end = 0; end < signature->utf8_length() && signature->byte_at(end) != ')'; end++);
119 // skip first '('
120 mangle_name_on(&st, signature, 1, end);
121 return st.as_string();
122 }
123
124 extern "C" {
125 void JNICALL JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls);
126 void JNICALL JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass unsafecls);
127 void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass);
128 void JNICALL JVM_RegisterWhiteBoxMethods(JNIEnv *env, jclass wbclass);
129 void JNICALL JVM_RegisterEventTracingMethods(JNIEnv *env, jclass evtclass);
130 }
131
132 #define CC (char*) /* cast a literal from (const char*) */
133 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
134
135 static JNINativeMethod lookup_special_native_methods[] = {
136 { CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) },
137 { CC"Java_java_lang_invoke_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) },
138 { CC"Java_sun_misc_Perf_registerNatives", NULL, FN_PTR(JVM_RegisterPerfMethods) },
139 { CC"Java_sun_hotspot_WhiteBox_registerNatives", NULL, FN_PTR(JVM_RegisterWhiteBoxMethods) },
140 { CC"Java_sun_evtracing_EventTracing_registerNatives", NULL, FN_PTR(JVM_RegisterEventTracingMethods) },
141 };
142
143 static address lookup_special_native(char* jni_name) {
144 int count = sizeof(lookup_special_native_methods) / sizeof(JNINativeMethod);
145 for (int i = 0; i < count; i++) {
146 // NB: To ignore the jni prefix and jni postfix strstr is used matching.
147 if (strstr(jni_name, lookup_special_native_methods[i].name) != NULL) {
148 return CAST_FROM_FN_PTR(address, lookup_special_native_methods[i].fnPtr);
149 }
150 }
151 return NULL;
152 }
153
154 address NativeLookup::lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS) {
155 address entry;
156 // Compute complete JNI name for style
157 stringStream st;
158 if (os_style) os::print_jni_name_prefix_on(&st, args_size);
159 st.print_raw(pure_name);
160 st.print_raw(long_name);
|