jdk8-mips64-public/hotspot: comparison src/share/vm/classfile/javaAssertions.cpp

--1:000000000000
+:f90c822e73f8
+/*
+* Copyright (c) 2000, 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/javaAssertions.hpp"
+#include "classfile/javaClasses.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "memory/allocation.inline.hpp"
+#include "memory/oopFactory.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/handles.inline.hpp"
+bool                            JavaAssertions::_userDefault = false;
+bool                            JavaAssertions::_sysDefault = false;
+JavaAssertions::OptionList*     JavaAssertions::_classes = 0;
+JavaAssertions::OptionList*     JavaAssertions::_packages = 0;
+JavaAssertions::OptionList::OptionList(const char* name, bool enabled,
+OptionList* next) {
+assert(name != 0, "need a name");
+_name = name;
+_enabled = enabled;
+_next = next;
+}
+int JavaAssertions::OptionList::count(OptionList* p) {
+int rc;
+for (rc = 0; p != 0; p = p->next(), ++rc) /* empty */;
+return rc;
+}
+void JavaAssertions::addOption(const char* name, bool enable) {
+assert(name != 0, "must have a name");
+// Copy the name.  The storage needs to exist for the the lifetime of the vm;
+// it is never freed, so will be leaked (along with other option strings -
+// e.g., bootclasspath) if a process creates/destroys multiple VMs.
+int len = (int)strlen(name);
+char *name_copy = NEW_C_HEAP_ARRAY(char, len + 1, mtClass);
+strcpy(name_copy, name);
+// Figure out which list the new item should go on.  Names that end in "..."
+// go on the package tree list.
+OptionList** head = &_classes;
+if (len >= 3 && strcmp(name_copy + len - 3, "...") == 0) {
+// Delete the "...".
+len -= 3;
+name_copy[len] = '\0';
+head = &_packages;
+}
+// Convert class/package names to internal format.  Will have to convert back
+// when copying to java in createJavaAssertionStatusDirectives, but that
+// should happen only once.  Alternative would require that
+// JVM_DesiredAssertionStatus pass the external_name() to
+// JavaAssertion::enabled(), but that is done once per loaded class.
+for (int i = 0; i < len; ++i) {
+if (name_copy[i] == '.') name_copy[i] = '/';
+}
+if (TraceJavaAssertions) {
+tty->print_cr("JavaAssertions: adding %s %s=%d",
+head == &_classes ? "class" : "package",
+name_copy[0] != '\0' ? name_copy : "'default'",
+enable);
+}
+// Prepend a new item to the list.  Items added later take precedence, so
+// prepending allows us to stop searching the list after the first match.
+*head = new OptionList(name_copy, enable, *head);
+}
+oop JavaAssertions::createAssertionStatusDirectives(TRAPS) {
+Symbol* asd_sym = vmSymbols::java_lang_AssertionStatusDirectives();
+Klass* k = SystemDictionary::resolve_or_fail(asd_sym, true, CHECK_NULL);
+instanceKlassHandle asd_klass (THREAD, k);
+asd_klass->initialize(CHECK_NULL);
+Handle h = asd_klass->allocate_instance_handle(CHECK_NULL);
+int len;
+typeArrayOop t;
+len = OptionList::count(_packages);
+objArrayOop pn = oopFactory::new_objArray(SystemDictionary::String_klass(), len, CHECK_NULL);
+objArrayHandle pkgNames (THREAD, pn);
+t = oopFactory::new_typeArray(T_BOOLEAN, len, CHECK_NULL);
+typeArrayHandle pkgEnabled(THREAD, t);
+fillJavaArrays(_packages, len, pkgNames, pkgEnabled, CHECK_NULL);
+len = OptionList::count(_classes);
+objArrayOop cn = oopFactory::new_objArray(SystemDictionary::String_klass(), len, CHECK_NULL);
+objArrayHandle classNames (THREAD, cn);
+t = oopFactory::new_typeArray(T_BOOLEAN, len, CHECK_NULL);
+typeArrayHandle classEnabled(THREAD, t);
+fillJavaArrays(_classes, len, classNames, classEnabled, CHECK_NULL);
+java_lang_AssertionStatusDirectives::set_packages(h(), pkgNames());
+java_lang_AssertionStatusDirectives::set_packageEnabled(h(), pkgEnabled());
+java_lang_AssertionStatusDirectives::set_classes(h(), classNames());
+java_lang_AssertionStatusDirectives::set_classEnabled(h(), classEnabled());
+java_lang_AssertionStatusDirectives::set_deflt(h(), userClassDefault());
+return h();
+}
+void JavaAssertions::fillJavaArrays(const OptionList* p, int len,
+objArrayHandle names, typeArrayHandle enabled, TRAPS) {
+// Fill in the parallel names and enabled (boolean) arrays.  Start at the end
+// of the array and work backwards, so the order of items in the arrays
+// matches the order on the command line (the list is in reverse order, since
+// it was created by prepending successive items from the command line).
+int index;
+for (index = len - 1; p != 0; p = p->next(), --index) {
+assert(index >= 0, "length does not match list");
+Handle s = java_lang_String::create_from_str(p->name(), CHECK);
+s = java_lang_String::char_converter(s, '/', '.', CHECK);
+names->obj_at_put(index, s());
+enabled->bool_at_put(index, p->enabled());
+}
+assert(index == -1, "length does not match list");
+}
+inline JavaAssertions::OptionList*
+JavaAssertions::match_class(const char* classname) {
+for (OptionList* p = _classes; p != 0; p = p->next()) {
+if (strcmp(p->name(), classname) == 0) {
+return p;
+}
+}
+return 0;
+}
+JavaAssertions::OptionList*
+JavaAssertions::match_package(const char* classname) {
+// Search the package list for any items that apply to classname.  Each
+// sub-package in classname is checked, from most-specific to least, until one
+// is found.
+if (_packages == 0) return 0;
+// Find the length of the "most-specific" package in classname.  If classname
+// does not include a package, length will be 0 which will match items for the
+// default package (from options "-ea:..."  or "-da:...").
+size_t len = strlen(classname);
+for (/* empty */; len > 0 && classname[len] != '/'; --len) /* empty */;
+do {
+assert(len == 0 || classname[len] == '/', "not a package name");
+for (OptionList* p = _packages; p != 0; p = p->next()) {
+if (strncmp(p->name(), classname, len) == 0 && p->name()[len] == '\0') {
+return p;
+}
+}
+// Find the length of the next package, taking care to avoid decrementing
+// past 0 (len is unsigned).
+while (len > 0 && classname[--len] != '/') /* empty */;
+} while (len > 0);
+return 0;
+}
+inline void JavaAssertions::trace(const char* name,
+const char* typefound, const char* namefound, bool enabled) {
+if (TraceJavaAssertions) {
+tty->print_cr("JavaAssertions:  search for %s found %s %s=%d",
+name, typefound, namefound[0] != '\0' ? namefound : "'default'", enabled);
+}
+}
+bool JavaAssertions::enabled(const char* classname, bool systemClass) {
+assert(classname != 0, "must have a classname");
+// This will be slow if the number of assertion options on the command line is
+// large--it traverses two lists, one of them multiple times.  Could use a
+// single n-ary tree instead of lists if someone ever notices.
+// First check options that apply to classes.  If we find a match we're done.
+OptionList* p;
+if (p = match_class(classname)) {
+trace(classname, "class", p->name(), p->enabled());
+return p->enabled();
+}
+// Now check packages, from most specific to least.
+if (p = match_package(classname)) {
+trace(classname, "package", p->name(), p->enabled());
+return p->enabled();
+}
+// No match.  Return the default status.
+bool result = systemClass ? systemClassDefault() : userClassDefault();
+trace(classname, systemClass ? "system" : "user", "default", result);
+return result;
+}

Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: src/share/vm/classfile/javaAssertions.cpp

src/share/vm/classfile/javaAssertions.cpp