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comparison src/share/vm/classfile/javaClasses.cpp @ 6972:bd7a7ce2e264

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6830717: replay of compilations would help with debugging Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method. Reviewed-by: kvn, twisti, sspitsyn Contributed-by: yumin.qi@oracle.com
author minqi
date Mon, 12 Nov 2012 14:03:53 -0800
parents 18fb7da42534
children 80e866b1d053
comparison
equal deleted inserted replaced
6965:3be318ecfae5 6972:bd7a7ce2e264
344 if (length == 0) return 0; 344 if (length == 0) return 0;
345 345
346 typeArrayOop value = java_lang_String::value(java_string); 346 typeArrayOop value = java_lang_String::value(java_string);
347 int offset = java_lang_String::offset(java_string); 347 int offset = java_lang_String::offset(java_string);
348 return java_lang_String::to_hash(value->char_at_addr(offset), length); 348 return java_lang_String::to_hash(value->char_at_addr(offset), length);
349 }
350
351 char* java_lang_String::as_quoted_ascii(oop java_string) {
352 typeArrayOop value = java_lang_String::value(java_string);
353 int offset = java_lang_String::offset(java_string);
354 int length = java_lang_String::length(java_string);
355
356 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
357 if (base == NULL) return NULL;
358
359 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
360 char* result = NEW_RESOURCE_ARRAY(char, result_length);
361 UNICODE::as_quoted_ascii(base, length, result, result_length);
362 assert(result_length >= length + 1, "must not be shorter");
363 assert(result_length == (int)strlen(result) + 1, "must match");
364 return result;
349 } 365 }
350 366
351 unsigned int java_lang_String::hash_string(oop java_string) { 367 unsigned int java_lang_String::hash_string(oop java_string) {
352 int length = java_lang_String::length(java_string); 368 int length = java_lang_String::length(java_string);
353 // Zero length string doesn't hash necessarily hash to zero. 369 // Zero length string doesn't hash necessarily hash to zero.