javaAssertions.cpp revision 1472:c18cbe5936b8
1228753Smm/* 2231200Smm * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. 3228753Smm * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4228753Smm * 5228753Smm * This code is free software; you can redistribute it and/or modify it 6228753Smm * under the terms of the GNU General Public License version 2 only, as 7228753Smm * published by the Free Software Foundation. 8228753Smm * 9228753Smm * This code is distributed in the hope that it will be useful, but WITHOUT 10228753Smm * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11228753Smm * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12228753Smm * version 2 for more details (a copy is included in the LICENSE file that 13228753Smm * accompanied this code). 14228753Smm * 15228753Smm * You should have received a copy of the GNU General Public License version 16228753Smm * 2 along with this work; if not, write to the Free Software Foundation, 17228753Smm * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18228753Smm * 19228753Smm * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20228753Smm * or visit www.oracle.com if you need additional information or have any 21228753Smm * questions. 22228753Smm * 23228753Smm */ 24228753Smm 25228753Smm#include "incls/_precompiled.incl" 26228753Smm#include "incls/_javaAssertions.cpp.incl" 27228753Smm 28228753Smmbool JavaAssertions::_userDefault = false; 29231200Smmbool JavaAssertions::_sysDefault = false; 30228753SmmJavaAssertions::OptionList* JavaAssertions::_classes = 0; 31228753SmmJavaAssertions::OptionList* JavaAssertions::_packages = 0; 32228753Smm 33228753SmmJavaAssertions::OptionList::OptionList(const char* name, bool enabled, 34228753Smm OptionList* next) { 35228753Smm assert(name != 0, "need a name"); 36228753Smm _name = name; 37228753Smm _enabled = enabled; 38228753Smm _next = next; 39228753Smm} 40228753Smm 41228753Smmint JavaAssertions::OptionList::count(OptionList* p) { 42228753Smm int rc; 43228753Smm for (rc = 0; p != 0; p = p->next(), ++rc) /* empty */; 44228753Smm return rc; 45228753Smm} 46228753Smm 47228753Smmvoid JavaAssertions::addOption(const char* name, bool enable) { 48228753Smm assert(name != 0, "must have a name"); 49228753Smm 50228753Smm // Copy the name. The storage needs to exist for the the lifetime of the vm; 51228753Smm // it is never freed, so will be leaked (along with other option strings - 52228753Smm // e.g., bootclasspath) if a process creates/destroys multiple VMs. 53228753Smm int len = (int)strlen(name); 54228753Smm char *name_copy = NEW_C_HEAP_ARRAY(char, len + 1); 55228753Smm strcpy(name_copy, name); 56228753Smm 57228753Smm // Figure out which list the new item should go on. Names that end in "..." 58228753Smm // go on the package tree list. 59228753Smm OptionList** head = &_classes; 60228753Smm if (len >= 3 && strcmp(name_copy + len - 3, "...") == 0) { 61228753Smm // Delete the "...". 62228753Smm len -= 3; 63231200Smm name_copy[len] = '\0'; 64231200Smm head = &_packages; 65231200Smm } 66231200Smm 67231200Smm // Convert class/package names to internal format. Will have to convert back 68231200Smm // when copying to java in createJavaAssertionStatusDirectives, but that 69231200Smm // should happen only once. Alternative would require that 70228753Smm // JVM_DesiredAssertionStatus pass the external_name() to 71228753Smm // JavaAssertion::enabled(), but that is done once per loaded class. 72231200Smm for (int i = 0; i < len; ++i) { 73231200Smm if (name_copy[i] == '.') name_copy[i] = '/'; 74231200Smm } 75231200Smm 76231200Smm if (TraceJavaAssertions) { 77231200Smm tty->print_cr("JavaAssertions: adding %s %s=%d", 78231200Smm head == &_classes ? "class" : "package", 79231200Smm name_copy[0] != '\0' ? name_copy : "'default'", 80231200Smm enable); 81228753Smm } 82228753Smm 83228753Smm // Prepend a new item to the list. Items added later take precedence, so 84228753Smm // prepending allows us to stop searching the list after the first match. 85228753Smm *head = new OptionList(name_copy, enable, *head); 86228753Smm} 87228753Smm 88228753Smmoop JavaAssertions::createAssertionStatusDirectives(TRAPS) { 89228753Smm symbolHandle asd_sym = vmSymbolHandles::java_lang_AssertionStatusDirectives(); 90228753Smm klassOop k = SystemDictionary::resolve_or_fail(asd_sym, true, CHECK_NULL); 91228753Smm instanceKlassHandle asd_klass (THREAD, k); 92228753Smm asd_klass->initialize(CHECK_NULL); 93228753Smm Handle h = asd_klass->allocate_instance_handle(CHECK_NULL); 94228753Smm 95228753Smm int len; 96228753Smm typeArrayOop t; 97228753Smm len = OptionList::count(_packages); 98228753Smm objArrayOop pn = oopFactory::new_objArray(SystemDictionary::String_klass(), len, CHECK_NULL); 99228753Smm objArrayHandle pkgNames (THREAD, pn); 100228753Smm t = oopFactory::new_typeArray(T_BOOLEAN, len, CHECK_NULL); 101228753Smm typeArrayHandle pkgEnabled(THREAD, t); 102228753Smm fillJavaArrays(_packages, len, pkgNames, pkgEnabled, CHECK_NULL); 103228753Smm 104228753Smm len = OptionList::count(_classes); 105228753Smm objArrayOop cn = oopFactory::new_objArray(SystemDictionary::String_klass(), len, CHECK_NULL); 106228753Smm objArrayHandle classNames (THREAD, cn); 107228753Smm t = oopFactory::new_typeArray(T_BOOLEAN, len, CHECK_NULL); 108228753Smm typeArrayHandle classEnabled(THREAD, t); 109228753Smm fillJavaArrays(_classes, len, classNames, classEnabled, CHECK_NULL); 110228753Smm 111228753Smm java_lang_AssertionStatusDirectives::set_packages(h(), pkgNames()); 112231200Smm java_lang_AssertionStatusDirectives::set_packageEnabled(h(), pkgEnabled()); 113231200Smm java_lang_AssertionStatusDirectives::set_classes(h(), classNames()); 114231200Smm java_lang_AssertionStatusDirectives::set_classEnabled(h(), classEnabled()); 115231200Smm java_lang_AssertionStatusDirectives::set_deflt(h(), userClassDefault()); 116228753Smm return h(); 117231200Smm} 118231200Smm 119228753Smmvoid JavaAssertions::fillJavaArrays(const OptionList* p, int len, 120231200SmmobjArrayHandle names, typeArrayHandle enabled, TRAPS) { 121228753Smm // Fill in the parallel names and enabled (boolean) arrays. Start at the end 122231200Smm // of the array and work backwards, so the order of items in the arrays 123231200Smm // matches the order on the command line (the list is in reverse order, since 124231200Smm // it was created by prepending successive items from the command line). 125231200Smm int index; 126231200Smm for (index = len - 1; p != 0; p = p->next(), --index) { 127231200Smm assert(index >= 0, "length does not match list"); 128231200Smm Handle s = java_lang_String::create_from_str(p->name(), CHECK); 129228753Smm s = java_lang_String::char_converter(s, '/', '.', CHECK); 130231200Smm names->obj_at_put(index, s()); 131228753Smm enabled->bool_at_put(index, p->enabled()); 132231200Smm } 133231200Smm assert(index == -1, "length does not match list"); 134231200Smm} 135231200Smm 136228753Smminline JavaAssertions::OptionList* 137228753SmmJavaAssertions::match_class(const char* classname) { 138228753Smm for (OptionList* p = _classes; p != 0; p = p->next()) { 139248616Smm if (strcmp(p->name(), classname) == 0) { 140228753Smm return p; 141228753Smm } 142228753Smm } 143228753Smm return 0; 144228753Smm} 145228753Smm 146228753SmmJavaAssertions::OptionList* 147228753SmmJavaAssertions::match_package(const char* classname) { 148248616Smm // Search the package list for any items that apply to classname. Each 149228753Smm // sub-package in classname is checked, from most-specific to least, until one 150228753Smm // is found. 151228753Smm if (_packages == 0) return 0; 152228753Smm 153231200Smm // Find the length of the "most-specific" package in classname. If classname 154228753Smm // does not include a package, length will be 0 which will match items for the 155231200Smm // default package (from options "-ea:..." or "-da:..."). 156228753Smm size_t len = strlen(classname); 157231200Smm for (/* empty */; len > 0 && classname[len] != '/'; --len) /* empty */; 158231200Smm 159231200Smm do { 160231200Smm assert(len == 0 || classname[len] == '/', "not a package name"); 161231200Smm for (OptionList* p = _packages; p != 0; p = p->next()) { 162231200Smm if (strncmp(p->name(), classname, len) == 0 && p->name()[len] == '\0') { 163231200Smm return p; 164228753Smm } 165231200Smm } 166228753Smm 167231200Smm // Find the length of the next package, taking care to avoid decrementing 168231200Smm // past 0 (len is unsigned). 169231200Smm while (len > 0 && classname[--len] != '/') /* empty */; 170231200Smm } while (len > 0); 171228753Smm 172228753Smm return 0; 173228753Smm} 174248616Smm 175228753Smminline void JavaAssertions::trace(const char* name, 176228753Smmconst char* typefound, const char* namefound, bool enabled) { 177228753Smm if (TraceJavaAssertions) { 178228753Smm tty->print_cr("JavaAssertions: search for %s found %s %s=%d", 179228753Smm name, typefound, namefound[0] != '\0' ? namefound : "'default'", enabled); 180228753Smm } 181228753Smm} 182228753Smm 183228753Smmbool JavaAssertions::enabled(const char* classname, bool systemClass) { 184228753Smm assert(classname != 0, "must have a classname"); 185248616Smm 186228753Smm // This will be slow if the number of assertion options on the command line is 187228753Smm // large--it traverses two lists, one of them multiple times. Could use a 188228753Smm // single n-ary tree instead of lists if someone ever notices. 189228753Smm 190231200Smm // First check options that apply to classes. If we find a match we're done. 191231200Smm OptionList* p; 192231200Smm if (p = match_class(classname)) { 193231200Smm trace(classname, "class", p->name(), p->enabled()); 194231200Smm return p->enabled(); 195231200Smm } 196231200Smm 197231200Smm // Now check packages, from most specific to least. 198231200Smm if (p = match_package(classname)) { 199231200Smm trace(classname, "package", p->name(), p->enabled()); 200231200Smm return p->enabled(); 201231200Smm } 202231200Smm 203231200Smm // No match. Return the default status. 204231200Smm bool result = systemClass ? systemClassDefault() : userClassDefault(); 205231200Smm trace(classname, systemClass ? "system" : "user", "default", result); 206231200Smm return result; 207231200Smm} 208231200Smm