571 lines
17 KiB
C++
571 lines
17 KiB
C++
/*
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* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/directivesParser.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/os.inline.hpp"
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#include <string.h>
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void DirectivesParser::push_tmp(CompilerDirectives* dir) {
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_tmp_depth++;
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dir->set_next(_tmp_top);
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_tmp_top = dir;
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}
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CompilerDirectives* DirectivesParser::pop_tmp() {
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if (_tmp_top == NULL) {
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return NULL;
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}
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CompilerDirectives* tmp = _tmp_top;
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_tmp_top = _tmp_top->next();
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tmp->set_next(NULL);
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_tmp_depth--;
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return tmp;
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}
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void DirectivesParser::clean_tmp() {
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CompilerDirectives* tmp = pop_tmp();
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while (tmp != NULL) {
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delete tmp;
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tmp = pop_tmp();
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}
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assert(_tmp_depth == 0, "Consistency");
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}
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int DirectivesParser::parse_string(const char* text, outputStream* st) {
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DirectivesParser cd(text, st, false);
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if (cd.valid()) {
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return cd.install_directives();
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} else {
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cd.clean_tmp();
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st->flush();
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st->print_cr("Parsing of compiler directives failed");
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return -1;
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}
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}
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bool DirectivesParser::has_file() {
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return CompilerDirectivesFile != NULL;
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}
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bool DirectivesParser::parse_from_flag() {
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return parse_from_file(CompilerDirectivesFile, tty);
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}
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bool DirectivesParser::parse_from_file(const char* filename, outputStream* st) {
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assert(filename != NULL, "Test before calling this");
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if (!parse_from_file_inner(filename, st)) {
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st->print_cr("Could not load file: %s", filename);
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return false;
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}
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return true;
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}
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bool DirectivesParser::parse_from_file_inner(const char* filename, outputStream* stream) {
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struct stat st;
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ResourceMark rm;
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if (os::stat(filename, &st) == 0) {
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// found file, open it
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int file_handle = os::open(filename, 0, 0);
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if (file_handle != -1) {
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// read contents into resource array
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char* buffer = NEW_RESOURCE_ARRAY(char, st.st_size+1);
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ssize_t num_read = os::read(file_handle, (char*) buffer, st.st_size);
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if (num_read >= 0) {
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buffer[num_read] = '\0';
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// close file
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os::close(file_handle);
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return parse_string(buffer, stream) > 0;
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}
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}
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}
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return false;
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}
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int DirectivesParser::install_directives() {
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// Check limit
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if (!DirectivesStack::check_capacity(_tmp_depth, _st)) {
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clean_tmp();
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return 0;
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}
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// Pop from internal temporary stack and push to compileBroker.
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CompilerDirectives* tmp = pop_tmp();
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int i = 0;
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while (tmp != NULL) {
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i++;
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DirectivesStack::push(tmp);
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tmp = pop_tmp();
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}
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if (i == 0) {
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_st->print_cr("No directives in file");
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return 0;
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} else {
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_st->print_cr("%i compiler directives added", i);
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if (CompilerDirectivesPrint) {
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// Print entire directives stack after new has been pushed.
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DirectivesStack::print(_st);
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}
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return i;
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}
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}
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DirectivesParser::DirectivesParser(const char* text, outputStream* st, bool silent)
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: JSON(text, silent, st), depth(0), current_directive(NULL), current_directiveset(NULL), _tmp_top(NULL), _tmp_depth(0) {
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#ifndef PRODUCT
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memset(stack, 0, MAX_DEPTH * sizeof(stack[0]));
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#endif
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parse();
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}
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DirectivesParser::~DirectivesParser() {
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assert(_tmp_top == NULL, "Consistency");
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assert(_tmp_depth == 0, "Consistency");
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}
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const DirectivesParser::key DirectivesParser::keys[] = {
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// name, keytype, allow_array, allowed_mask, set_function
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{ "c1", type_c1, 0, mask(type_directives), NULL, UnknownFlagType },
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{ "c2", type_c2, 0, mask(type_directives), NULL, UnknownFlagType },
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{ "match", type_match, 1, mask(type_directives), NULL, UnknownFlagType },
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{ "inline", type_inline, 1, mask(type_directives) | mask(type_c1) | mask(type_c2), NULL, UnknownFlagType },
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// Global flags
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#define common_flag_key(name, type, dvalue, compiler) \
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{ #name, type_flag, 0, mask(type_directives) | mask(type_c1) | mask(type_c2), &DirectiveSet::set_##name, type##Flag},
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compilerdirectives_common_flags(common_flag_key)
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compilerdirectives_c2_flags(common_flag_key)
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compilerdirectives_c1_flags(common_flag_key)
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#undef common_flag_key
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};
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const DirectivesParser::key DirectivesParser::dir_array_key = {
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"top level directives array", type_dir_array, 0, 1 // Lowest bit means allow at top level
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};
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const DirectivesParser::key DirectivesParser::dir_key = {
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"top level directive", type_directives, 0, mask(type_dir_array) | 1 // Lowest bit means allow at top level
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};
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const DirectivesParser::key DirectivesParser::value_array_key = {
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"value array", type_value_array, 0, UINT_MAX // Allow all, checked by allow_array on other keys, not by allowed_mask from this key
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};
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const DirectivesParser::key* DirectivesParser::lookup_key(const char* str, size_t len) {
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for (size_t i = 0; i < (sizeof(keys) / sizeof(keys[0])); i++) {
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if (strncasecmp(keys[i].name, str, len) == 0) {
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return &keys[i];
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}
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}
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return NULL;
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}
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uint DirectivesParser::mask(keytype kt) {
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return 1 << (kt + 1);
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}
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bool DirectivesParser::push_key(const char* str, size_t len) {
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bool result = true;
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const key* k = lookup_key(str, len);
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if (k == NULL) {
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// os::strdup
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char* s = NEW_C_HEAP_ARRAY(char, len + 1, mtCompiler);
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strncpy(s, str, len);
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s[len] = '\0';
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error(KEY_ERROR, "No such key: '%s'.", s);
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FREE_C_HEAP_ARRAY(char, s);
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return false;
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}
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return push_key(k);
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}
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bool DirectivesParser::push_key(const key* k) {
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assert(k->allowedmask != 0, "not allowed anywhere?");
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// Exceeding the stack should not be possible with a valid compiler directive,
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// and an invalid should abort before this happens
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assert(depth < MAX_DEPTH, "exceeded stack depth");
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if (depth >= MAX_DEPTH) {
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error(INTERNAL_ERROR, "Stack depth exceeded.");
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return false;
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}
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assert(stack[depth] == NULL, "element not nulled, something is wrong");
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if (depth == 0 && !(k->allowedmask & 1)) {
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error(KEY_ERROR, "Key '%s' not allowed at top level.", k->name);
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return false;
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}
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if (depth > 0) {
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const key* prev = stack[depth - 1];
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if (!(k->allowedmask & mask(prev->type))) {
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error(KEY_ERROR, "Key '%s' not allowed after '%s' key.", k->name, prev->name);
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return false;
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}
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}
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stack[depth] = k;
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depth++;
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return true;
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}
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const DirectivesParser::key* DirectivesParser::current_key() {
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assert(depth > 0, "getting key from empty stack");
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if (depth == 0) {
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return NULL;
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}
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return stack[depth - 1];
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}
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const DirectivesParser::key* DirectivesParser::pop_key() {
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assert(depth > 0, "popping empty stack");
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if (depth == 0) {
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error(INTERNAL_ERROR, "Popping empty stack.");
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return NULL;
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}
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depth--;
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const key* k = stack[depth];
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#ifndef PRODUCT
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stack[depth] = NULL;
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#endif
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return k;
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}
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bool DirectivesParser::set_option_flag(JSON_TYPE t, JSON_VAL* v, const key* option_key, DirectiveSet* set) {
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void (DirectiveSet::*test)(void *args);
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test = option_key->set;
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switch (t) {
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case JSON_TRUE:
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if (option_key->flag_type != boolFlag) {
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error(VALUE_ERROR, "Cannot use bool value for an %s flag", flag_type_names[option_key->flag_type]);
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return false;
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} else {
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bool val = true;
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(set->*test)((void *)&val);
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}
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break;
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case JSON_FALSE:
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if (option_key->flag_type != boolFlag) {
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error(VALUE_ERROR, "Cannot use bool value for an %s flag", flag_type_names[option_key->flag_type]);
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return false;
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} else {
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bool val = false;
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(set->*test)((void *)&val);
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}
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break;
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case JSON_NUMBER_INT:
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if (option_key->flag_type == intxFlag) {
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intx ival = v->int_value;
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(set->*test)((void *)&ival);
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} else if (option_key->flag_type == uintxFlag) {
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uintx ival = v->uint_value;
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(set->*test)((void *)&ival);
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} else if (option_key->flag_type == doubleFlag) {
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double dval = (double)v->int_value;
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(set->*test)((void *)&dval);
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} else {
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error(VALUE_ERROR, "Cannot use int value for an %s flag", flag_type_names[option_key->flag_type]);
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return false;
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}
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break;
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case JSON_NUMBER_FLOAT:
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if (option_key->flag_type != doubleFlag) {
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error(VALUE_ERROR, "Cannot use double value for an %s flag", flag_type_names[option_key->flag_type]);
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return false;
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} else {
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double dval = v->double_value;
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(set->*test)((void *)&dval);
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}
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break;
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case JSON_STRING:
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if (option_key->flag_type != ccstrFlag && option_key->flag_type != ccstrlistFlag) {
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error(VALUE_ERROR, "Cannot use string value for a %s flag", flag_type_names[option_key->flag_type]);
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return false;
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} else {
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char* s = NEW_C_HEAP_ARRAY(char, v->str.length+1, mtCompiler);
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strncpy(s, v->str.start, v->str.length + 1);
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s[v->str.length] = '\0';
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(set->*test)((void *)&s);
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}
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break;
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default:
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assert(0, "Should not reach here.");
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}
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return true;
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}
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bool DirectivesParser::set_option(JSON_TYPE t, JSON_VAL* v) {
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const key* option_key = pop_key();
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const key* enclosing_key = current_key();
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if (option_key->type == value_array_key.type) {
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// Multi value array, we are really setting the value
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// for the key one step further up.
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option_key = pop_key();
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enclosing_key = current_key();
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// Repush option_key and multi value marker, since
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// we need to keep them until all multi values are set.
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push_key(option_key);
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push_key(&value_array_key);
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}
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switch (option_key->type) {
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case type_flag:
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{
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if (current_directiveset == NULL) {
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assert(depth == 2, "Must not have active directive set");
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if (!set_option_flag(t, v, option_key, current_directive->_c1_store)) {
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return false;
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}
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if (!set_option_flag(t, v, option_key, current_directive->_c2_store)) {
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return false;
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}
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} else {
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assert(depth > 2, "Must have active current directive set");
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if (!set_option_flag(t, v, option_key, current_directiveset)) {
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return false;
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}
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}
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break;
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}
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case type_match:
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if (t != JSON_STRING) {
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error(VALUE_ERROR, "Key of type %s needs a value of type string", option_key->name);
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return false;
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}
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if (enclosing_key->type != type_directives) {
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error(SYNTAX_ERROR, "Match keyword can only exist inside a directive");
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return false;
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}
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{
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char* s = NEW_C_HEAP_ARRAY(char, v->str.length + 1, mtCompiler);
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strncpy(s, v->str.start, v->str.length);
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s[v->str.length] = '\0';
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const char* error_msg = NULL;
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if (!current_directive->add_match(s, error_msg)) {
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assert (error_msg != NULL, "Must have valid error message");
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error(VALUE_ERROR, "Method pattern error: %s", error_msg);
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}
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FREE_C_HEAP_ARRAY(char, s);
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}
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break;
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case type_inline:
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if (t != JSON_STRING) {
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error(VALUE_ERROR, "Key of type %s needs a value of type string", option_key->name);
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return false;
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}
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{
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//char* s = strndup(v->str.start, v->str.length);
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char* s = NEW_C_HEAP_ARRAY(char, v->str.length + 1, mtCompiler);
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strncpy(s, v->str.start, v->str.length);
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s[v->str.length] = '\0';
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const char* error_msg = NULL;
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if (current_directiveset == NULL) {
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if (current_directive->_c1_store->parse_and_add_inline(s, error_msg)) {
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if (!current_directive->_c2_store->parse_and_add_inline(s, error_msg)) {
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assert (error_msg != NULL, "Must have valid error message");
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error(VALUE_ERROR, "Method pattern error: %s", error_msg);
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}
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} else {
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assert (error_msg != NULL, "Must have valid error message");
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error(VALUE_ERROR, "Method pattern error: %s", error_msg);
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}
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} else {
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if (!current_directiveset->parse_and_add_inline(s, error_msg)) {
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assert (error_msg != NULL, "Must have valid error message");
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error(VALUE_ERROR, "Method pattern error: %s", error_msg);
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}
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}
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FREE_C_HEAP_ARRAY(char, s);
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}
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break;
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case type_c1:
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current_directiveset = current_directive->_c1_store;
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if (t != JSON_TRUE && t != JSON_FALSE) {
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error(VALUE_ERROR, "Key of type %s needs a true or false value", option_key->name);
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return false;
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}
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break;
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case type_c2:
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current_directiveset = current_directive->_c2_store;
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if (t != JSON_TRUE && t != JSON_FALSE) {
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error(VALUE_ERROR, "Key of type %s needs a true or false value", option_key->name);
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return false;
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}
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break;
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default:
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break;
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}
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return true;
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}
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bool DirectivesParser::callback(JSON_TYPE t, JSON_VAL* v, uint rlimit) {
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const key* k;
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if (depth == 0) {
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switch (t) {
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case JSON_ARRAY_BEGIN:
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return push_key(&dir_array_key);
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case JSON_OBJECT_BEGIN:
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// push synthetic dir_array
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push_key(&dir_array_key);
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assert(depth == 1, "Make sure the stack are aligned with the directives");
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break;
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default:
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error(SYNTAX_ERROR, "DirectivesParser can only start with an array containing directive objects, or one single directive.");
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return false;
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}
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}
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if (depth == 1) {
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switch (t) {
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case JSON_OBJECT_BEGIN:
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// Parsing a new directive.
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current_directive = new CompilerDirectives();
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return push_key(&dir_key);
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case JSON_ARRAY_END:
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k = pop_key();
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if (k->type != type_dir_array) {
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error(SYNTAX_ERROR, "Expected end of directives array");
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return false;
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}
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return true;
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default:
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error(SYNTAX_ERROR, "DirectivesParser can only start with an array containing directive objects, or one single directive.");
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return false;
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}
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} else {
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switch (t) {
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case JSON_OBJECT_BEGIN:
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k = current_key();
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switch (k->type) {
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case type_c1:
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current_directiveset = current_directive->_c1_store;
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return true;
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case type_c2:
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current_directiveset = current_directive->_c2_store;
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return true;
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case type_dir_array:
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return push_key(&dir_key);
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default:
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error(SYNTAX_ERROR, "The key '%s' does not allow an object to follow.", k->name);
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return false;
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}
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return false;
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case JSON_OBJECT_END:
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k = pop_key();
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switch (k->type) {
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case type_c1:
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case type_c2:
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// This is how we now if options apply to a single or both directive sets
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current_directiveset = NULL;
|
|
break;
|
|
|
|
case type_directives:
|
|
// Check, finish and push to stack!
|
|
if (current_directive->match() == NULL) {
|
|
error(INTERNAL_ERROR, "Directive missing required match.");
|
|
return false;
|
|
}
|
|
current_directive->finalize(_st);
|
|
push_tmp(current_directive);
|
|
current_directive = NULL;
|
|
break;
|
|
|
|
default:
|
|
error(INTERNAL_ERROR, "Object end with wrong key type on stack: %s.", k->name);
|
|
ShouldNotReachHere();
|
|
return false;
|
|
}
|
|
return true;
|
|
|
|
case JSON_ARRAY_BEGIN:
|
|
k = current_key();
|
|
if (!(k->allow_array_value)) {
|
|
if (k->type == type_dir_array) {
|
|
error(SYNTAX_ERROR, "Array not allowed inside top level array, expected directive object.");
|
|
} else {
|
|
error(VALUE_ERROR, "The key '%s' does not allow an array of values.", k->name);
|
|
}
|
|
return false;
|
|
}
|
|
return push_key(&value_array_key);
|
|
|
|
case JSON_ARRAY_END:
|
|
k = pop_key(); // Pop multi value marker
|
|
assert(k->type == value_array_key.type, "array end for level != 0 should terminate multi value");
|
|
k = pop_key(); // Pop key for option that was set
|
|
return true;
|
|
|
|
case JSON_KEY:
|
|
return push_key(v->str.start, v->str.length);
|
|
|
|
case JSON_STRING:
|
|
case JSON_NUMBER_INT:
|
|
case JSON_NUMBER_FLOAT:
|
|
case JSON_TRUE:
|
|
case JSON_FALSE:
|
|
case JSON_NULL:
|
|
return set_option(t, v);
|
|
|
|
default:
|
|
error(INTERNAL_ERROR, "Unknown JSON type: %d.", t);
|
|
ShouldNotReachHere();
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|