src/share/vm/oops/constMethodOop.cpp
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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.
@@ -33,10 +33,11 @@
// How big must this constMethodObject be?
int constMethodOopDesc::object_size(int code_size,
int compressed_line_number_size,
int local_variable_table_length,
+ int exception_table_length,
int checked_exceptions_length) {
int extra_bytes = code_size;
if (compressed_line_number_size > 0) {
extra_bytes += compressed_line_number_size;
}
@@ -47,10 +48,14 @@
if (local_variable_table_length > 0) {
extra_bytes += sizeof(u2);
extra_bytes +=
local_variable_table_length * sizeof(LocalVariableTableElement);
}
+ if (exception_table_length > 0) {
+ extra_bytes += sizeof(u2);
+ extra_bytes += exception_table_length * sizeof(ExceptionTableElement);
+ }
int extra_words = align_size_up(extra_bytes, BytesPerWord) / BytesPerWord;
return align_object_size(header_size() + extra_words);
}
@@ -67,37 +72,58 @@
// Located at the end of the constMethod.
assert(has_checked_exceptions(), "called only if table is present");
return last_u2_element();
}
+u2* constMethodOopDesc::exception_table_length_addr() const {
+ assert(has_exception_handler(), "called only if table is present");
+ if (has_checked_exceptions()) {
+ // If checked_exception present, locate immediately before them.
+ return (u2*) checked_exceptions_start() - 1;
+ } else {
+ // Else, the exception table is at the end of the constMethod.
+ return last_u2_element();
+ }
+}
+
u2* constMethodOopDesc::localvariable_table_length_addr() const {
assert(has_localvariable_table(), "called only if table is present");
+ if (has_exception_handler()) {
+ // If exception_table present, locate immediately before them.
+ return (u2*) exception_table_start() - 1;
+ } else {
if (has_checked_exceptions()) {
// If checked_exception present, locate immediately before them.
return (u2*) checked_exceptions_start() - 1;
} else {
// Else, the linenumber table is at the end of the constMethod.
return last_u2_element();
}
+ }
}
// Update the flags to indicate the presence of these optional fields.
void constMethodOopDesc::set_inlined_tables_length(
int checked_exceptions_len,
int compressed_line_number_size,
- int localvariable_table_len) {
+ int localvariable_table_len,
+ int exception_table_len) {
// Must be done in the order below, otherwise length_addr accessors
// will not work. Only set bit in header if length is positive.
assert(_flags == 0, "Error");
if (compressed_line_number_size > 0) {
_flags |= _has_linenumber_table;
}
if (checked_exceptions_len > 0) {
_flags |= _has_checked_exceptions;
*(checked_exceptions_length_addr()) = checked_exceptions_len;
}
+ if (exception_table_len > 0) {
+ _flags |= _has_exception_table;
+ *(exception_table_length_addr()) = exception_table_len;
+ }
if (localvariable_table_len > 0) {
_flags |= _has_localvariable_table;
*(localvariable_table_length_addr()) = localvariable_table_len;
}
}
@@ -127,5 +153,17 @@
u2 length = *addr;
assert(length > 0, "should only be called if table is present");
addr -= length * sizeof(LocalVariableTableElement) / sizeof(u2);
return (LocalVariableTableElement*) addr;
}
+
+int constMethodOopDesc::exception_table_length() const {
+ return has_exception_handler() ? *(exception_table_length_addr()) : 0;
+}
+
+ExceptionTableElement* constMethodOopDesc::exception_table_start() const {
+ u2* addr = exception_table_length_addr();
+ u2 length = *addr;
+ assert(length > 0, "should only be called if table is present");
+ addr -= length * sizeof(ExceptionTableElement) / sizeof(u2);
+ return (ExceptionTableElement*)addr;
+}