Mercurial > hg > graal-compiler
view src/share/vm/prims/nativeLookup.cpp @ 10566:a6632ef9c84d
GPU generate_kernel return for Cuda function
author | Morris Meyer <morris.meyer@oracle.com> |
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date | Thu, 27 Jun 2013 19:57:43 -0400 |
parents | 3489047ffea2 |
children | 096c224171c4 |
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/* * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "classfile/javaClasses.hpp" #include "classfile/systemDictionary.hpp" #include "classfile/vmSymbols.hpp" #include "memory/oopFactory.hpp" #include "memory/resourceArea.hpp" #include "memory/universe.inline.hpp" #include "oops/instanceKlass.hpp" #include "oops/method.hpp" #include "oops/oop.inline.hpp" #include "oops/symbol.hpp" #include "prims/jvm_misc.hpp" #include "prims/nativeLookup.hpp" #include "runtime/arguments.hpp" #include "runtime/handles.inline.hpp" #include "runtime/javaCalls.hpp" #include "runtime/sharedRuntime.hpp" #include "runtime/signature.hpp" #include "utilities/macros.hpp" #ifdef TARGET_OS_FAMILY_linux # include "os_linux.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_solaris # include "os_solaris.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_windows # include "os_windows.inline.hpp" #endif #ifdef TARGET_OS_FAMILY_bsd # include "os_bsd.inline.hpp" #endif static void mangle_name_on(outputStream* st, Symbol* name, int begin, int end) { char* bytes = (char*)name->bytes() + begin; char* end_bytes = (char*)name->bytes() + end; while (bytes < end_bytes) { jchar c; bytes = UTF8::next(bytes, &c); if (c <= 0x7f && isalnum(c)) { st->put((char) c); } else { if (c == '_') st->print("_1"); else if (c == '/') st->print("_"); else if (c == ';') st->print("_2"); else if (c == '[') st->print("_3"); else st->print("_%.5x", c); } } } static void mangle_name_on(outputStream* st, Symbol* name) { mangle_name_on(st, name, 0, name->utf8_length()); } char* NativeLookup::pure_jni_name(methodHandle method) { stringStream st; // Prefix st.print("Java_"); // Klass name mangle_name_on(&st, method->klass_name()); st.print("_"); // Method name mangle_name_on(&st, method->name()); return st.as_string(); } char* NativeLookup::critical_jni_name(methodHandle method) { stringStream st; // Prefix st.print("JavaCritical_"); // Klass name mangle_name_on(&st, method->klass_name()); st.print("_"); // Method name mangle_name_on(&st, method->name()); return st.as_string(); } char* NativeLookup::long_jni_name(methodHandle method) { // Signature ignore the wrapping parenteses and the trailing return type stringStream st; Symbol* signature = method->signature(); st.print("__"); // find ')' int end; for (end = 0; end < signature->utf8_length() && signature->byte_at(end) != ')'; end++); // skip first '(' mangle_name_on(&st, signature, 1, end); return st.as_string(); } extern "C" { void JNICALL JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls); void JNICALL JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass unsafecls); void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass); void JNICALL JVM_RegisterWhiteBoxMethods(JNIEnv *env, jclass wbclass); #ifdef GRAAL jobject JNICALL JVM_InitializeGraalRuntime(JNIEnv *env, jclass graalclass); jobject JNICALL JVM_InitializeTruffleRuntime(JNIEnv *env, jclass graalclass); #endif } #define CC (char*) /* cast a literal from (const char*) */ #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) static JNINativeMethod lookup_special_native_methods[] = { // Next two functions only exist for compatibility with 1.3.1 and earlier. { CC"Java_java_io_ObjectOutputStream_getPrimitiveFieldValues", NULL, FN_PTR(JVM_GetPrimitiveFieldValues) }, // intercept ObjectOutputStream getPrimitiveFieldValues for faster serialization { CC"Java_java_io_ObjectInputStream_setPrimitiveFieldValues", NULL, FN_PTR(JVM_SetPrimitiveFieldValues) }, // intercept ObjectInputStream setPrimitiveFieldValues for faster serialization { CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) }, { CC"Java_java_lang_invoke_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) }, { CC"Java_sun_misc_Perf_registerNatives", NULL, FN_PTR(JVM_RegisterPerfMethods) }, { CC"Java_sun_hotspot_WhiteBox_registerNatives", NULL, FN_PTR(JVM_RegisterWhiteBoxMethods) }, #ifdef GRAAL { CC"Java_com_oracle_graal_api_runtime_Graal_initializeRuntime", NULL, FN_PTR(JVM_InitializeGraalRuntime) }, { CC"Java_com_oracle_truffle_api_Truffle_initializeRuntime", NULL, FN_PTR(JVM_InitializeTruffleRuntime) }, #endif }; static address lookup_special_native(char* jni_name) { int i = !JDK_Version::is_gte_jdk14x_version() ? 0 : 2; // see comment in lookup_special_native_methods int count = sizeof(lookup_special_native_methods) / sizeof(JNINativeMethod); for (; i < count; i++) { // NB: To ignore the jni prefix and jni postfix strstr is used matching. if (strstr(jni_name, lookup_special_native_methods[i].name) != NULL) { return CAST_FROM_FN_PTR(address, lookup_special_native_methods[i].fnPtr); } } return NULL; } address NativeLookup::lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS) { address entry; // Compute complete JNI name for style stringStream st; if (os_style) os::print_jni_name_prefix_on(&st, args_size); st.print_raw(pure_name); st.print_raw(long_name); if (os_style) os::print_jni_name_suffix_on(&st, args_size); char* jni_name = st.as_string(); // If the loader is null we have a system class, so we attempt a lookup in // the native Java library. This takes care of any bootstrapping problems. // Note: It is critical for bootstrapping that Java_java_lang_ClassLoader_00024NativeLibrary_find // gets found the first time around - otherwise an infinite loop can occure. This is // another VM/library dependency Handle loader(THREAD, method->method_holder()->class_loader()); if (loader.is_null()) { entry = lookup_special_native(jni_name); if (entry == NULL) { entry = (address) os::dll_lookup(os::native_java_library(), jni_name); } if (entry != NULL) { in_base_library = true; return entry; } } // Otherwise call static method findNative in ClassLoader KlassHandle klass (THREAD, SystemDictionary::ClassLoader_klass()); Handle name_arg = java_lang_String::create_from_str(jni_name, CHECK_NULL); JavaValue result(T_LONG); JavaCalls::call_static(&result, klass, vmSymbols::findNative_name(), vmSymbols::classloader_string_long_signature(), // Arguments loader, name_arg, CHECK_NULL); entry = (address) (intptr_t) result.get_jlong(); if (entry == NULL) { // findNative didn't find it, if there are any agent libraries look in them AgentLibrary* agent; for (agent = Arguments::agents(); agent != NULL; agent = agent->next()) { entry = (address) os::dll_lookup(agent->os_lib(), jni_name); if (entry != NULL) { return entry; } } } return entry; } address NativeLookup::lookup_critical_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style) { if (!method->has_native_function()) { return NULL; } address current_entry = method->native_function(); char dll_name[JVM_MAXPATHLEN]; int offset; if (os::dll_address_to_library_name(current_entry, dll_name, sizeof(dll_name), &offset)) { char ebuf[32]; void* dll = os::dll_load(dll_name, ebuf, sizeof(ebuf)); if (dll != NULL) { // Compute complete JNI name for style stringStream st; if (os_style) os::print_jni_name_prefix_on(&st, args_size); st.print_raw(pure_name); st.print_raw(long_name); if (os_style) os::print_jni_name_suffix_on(&st, args_size); char* jni_name = st.as_string(); return (address)os::dll_lookup(dll, jni_name); } } return NULL; } // Check all the formats of native implementation name to see if there is one // for the specified method. address NativeLookup::lookup_entry(methodHandle method, bool& in_base_library, TRAPS) { address entry = NULL; in_base_library = false; // Compute pure name char* pure_name = pure_jni_name(method); // Compute argument size int args_size = 1 // JNIEnv + (method->is_static() ? 1 : 0) // class for static methods + method->size_of_parameters(); // actual parameters // 1) Try JNI short style entry = lookup_style(method, pure_name, "", args_size, true, in_base_library, CHECK_NULL); if (entry != NULL) return entry; // Compute long name char* long_name = long_jni_name(method); // 2) Try JNI long style entry = lookup_style(method, pure_name, long_name, args_size, true, in_base_library, CHECK_NULL); if (entry != NULL) return entry; // 3) Try JNI short style without os prefix/suffix entry = lookup_style(method, pure_name, "", args_size, false, in_base_library, CHECK_NULL); if (entry != NULL) return entry; // 4) Try JNI long style without os prefix/suffix entry = lookup_style(method, pure_name, long_name, args_size, false, in_base_library, CHECK_NULL); return entry; // NULL indicates not found } // Check all the formats of native implementation name to see if there is one // for the specified method. address NativeLookup::lookup_critical_entry(methodHandle method) { if (!CriticalJNINatives) return NULL; if (method->is_synchronized() || !method->is_static()) { // Only static non-synchronized methods are allowed return NULL; } ResourceMark rm; address entry = NULL; Symbol* signature = method->signature(); for (int end = 0; end < signature->utf8_length(); end++) { if (signature->byte_at(end) == 'L') { // Don't allow object types return NULL; } } // Compute critical name char* critical_name = critical_jni_name(method); // Compute argument size int args_size = 1 // JNIEnv + (method->is_static() ? 1 : 0) // class for static methods + method->size_of_parameters(); // actual parameters // 1) Try JNI short style entry = lookup_critical_style(method, critical_name, "", args_size, true); if (entry != NULL) return entry; // Compute long name char* long_name = long_jni_name(method); // 2) Try JNI long style entry = lookup_critical_style(method, critical_name, long_name, args_size, true); if (entry != NULL) return entry; // 3) Try JNI short style without os prefix/suffix entry = lookup_critical_style(method, critical_name, "", args_size, false); if (entry != NULL) return entry; // 4) Try JNI long style without os prefix/suffix entry = lookup_critical_style(method, critical_name, long_name, args_size, false); return entry; // NULL indicates not found } // Check if there are any JVM TI prefixes which have been applied to the native method name. // If any are found, remove them before attemping the look up of the // native implementation again. // See SetNativeMethodPrefix in the JVM TI Spec for more details. address NativeLookup::lookup_entry_prefixed(methodHandle method, bool& in_base_library, TRAPS) { #if INCLUDE_JVMTI ResourceMark rm(THREAD); int prefix_count; char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); char* in_name = method->name()->as_C_string(); char* wrapper_name = in_name; // last applied prefix will be first -- go backwards for (int i = prefix_count-1; i >= 0; i--) { char* prefix = prefixes[i]; size_t prefix_len = strlen(prefix); if (strncmp(prefix, wrapper_name, prefix_len) == 0) { // has this prefix remove it wrapper_name += prefix_len; } } if (wrapper_name != in_name) { // we have a name for a wrapping method int wrapper_name_len = (int)strlen(wrapper_name); TempNewSymbol wrapper_symbol = SymbolTable::probe(wrapper_name, wrapper_name_len); if (wrapper_symbol != NULL) { KlassHandle kh(method->method_holder()); Method* wrapper_method = kh()->lookup_method(wrapper_symbol, method->signature()); if (wrapper_method != NULL && !wrapper_method->is_native()) { // we found a wrapper method, use its native entry method->set_is_prefixed_native(); return lookup_entry(wrapper_method, in_base_library, THREAD); } } } #endif // INCLUDE_JVMTI return NULL; } address NativeLookup::lookup_base(methodHandle method, bool& in_base_library, TRAPS) { address entry = NULL; ResourceMark rm(THREAD); entry = lookup_entry(method, in_base_library, THREAD); if (entry != NULL) return entry; // standard native method resolution has failed. Check if there are any // JVM TI prefixes which have been applied to the native method name. entry = lookup_entry_prefixed(method, in_base_library, THREAD); if (entry != NULL) return entry; // Native function not found, throw UnsatisfiedLinkError THROW_MSG_0(vmSymbols::java_lang_UnsatisfiedLinkError(), method->name_and_sig_as_C_string()); } address NativeLookup::lookup(methodHandle method, bool& in_base_library, TRAPS) { if (!method->has_native_function()) { address entry = lookup_base(method, in_base_library, CHECK_NULL); method->set_native_function(entry, Method::native_bind_event_is_interesting); // -verbose:jni printing if (PrintJNIResolving) { ResourceMark rm(THREAD); tty->print_cr("[Dynamic-linking native method %s.%s ... JNI]", method->method_holder()->external_name(), method->name()->as_C_string()); } } return method->native_function(); } address NativeLookup::base_library_lookup(const char* class_name, const char* method_name, const char* signature) { EXCEPTION_MARK; bool in_base_library = true; // SharedRuntime inits some math methods. TempNewSymbol c_name = SymbolTable::new_symbol(class_name, CATCH); TempNewSymbol m_name = SymbolTable::new_symbol(method_name, CATCH); TempNewSymbol s_name = SymbolTable::new_symbol(signature, CATCH); // Find the class Klass* k = SystemDictionary::resolve_or_fail(c_name, true, CATCH); instanceKlassHandle klass (THREAD, k); // Find method and invoke standard lookup methodHandle method (THREAD, klass->uncached_lookup_method(m_name, s_name)); address result = lookup(method, in_base_library, CATCH); assert(in_base_library, "must be in basic library"); guarantee(result != NULL, "must be non NULL"); return result; }