Mercurial > hg > truffle
diff src/share/vm/classfile/javaClasses.cpp @ 22:90f5ddc7297b
6646946: Kernel installation failed on Japanese and Chinese XP SP2 (VM part)
Summary: convert strings from Download Manager into native encoding in the VM
Reviewed-by: sbohne, never, phh, kamg, xlu
author | coleenp |
---|---|
date | Thu, 17 Jan 2008 13:38:17 -0800 |
parents | a61af66fc99e |
children | deb97b8ef02b |
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--- a/src/share/vm/classfile/javaClasses.cpp Thu Dec 06 13:59:28 2007 -0800 +++ b/src/share/vm/classfile/javaClasses.cpp Thu Jan 17 13:38:17 2008 -0800 @@ -143,13 +143,43 @@ jstring js = NULL; { JavaThread* thread = (JavaThread*)THREAD; assert(thread->is_Java_thread(), "must be java thread"); + HandleMark hm(thread); ThreadToNativeFromVM ttn(thread); - HandleMark hm(thread); js = (_to_java_string_fn)(thread->jni_environment(), str); } return Handle(THREAD, JNIHandles::resolve(js)); } +// Converts a Java String to a native C string that can be used for +// native OS calls. +char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { + + typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); + static to_platform_string_fn_t _to_platform_string_fn = NULL; + + if (_to_platform_string_fn == NULL) { + void *lib_handle = os::native_java_library(); + _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, hpi::dll_lookup(lib_handle, "GetStringPlatformChars")); + if (_to_platform_string_fn == NULL) { + fatal("GetStringPlatformChars missing"); + } + } + + char *native_platform_string; + { JavaThread* thread = (JavaThread*)THREAD; + assert(thread->is_Java_thread(), "must be java thread"); + JNIEnv *env = thread->jni_environment(); + jstring js = (jstring) JNIHandles::make_local(env, java_string()); + bool is_copy; + HandleMark hm(thread); + ThreadToNativeFromVM ttn(thread); + native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); + assert(is_copy == JNI_TRUE, "is_copy value changed"); + JNIHandles::destroy_local(js); + } + return native_platform_string; +} + Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { oop obj = java_string(); // Typical usage is to convert all '/' to '.' in string.