author | trims |
Thu, 27 May 2010 19:08:38 -0700 | |
changeset 5547 | f4b087cbb361 |
parent 5402 | c51fd0c1d005 |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2002, 2006, 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 "incls/_precompiled.incl" |
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#include "incls/_compileLog.cpp.incl" |
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CompileLog* CompileLog::_first = NULL; |
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// ------------------------------------------------------------------ |
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// CompileLog::CompileLog |
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CompileLog::CompileLog(const char* file, FILE* fp, intx thread_id) |
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: _context(_context_buffer, sizeof(_context_buffer)) |
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{ |
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initialize(new(ResourceObj::C_HEAP) fileStream(fp)); |
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_file = file; |
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_file_end = 0; |
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_thread_id = thread_id; |
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_identities_limit = 0; |
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_identities_capacity = 400; |
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_identities = NEW_C_HEAP_ARRAY(char, _identities_capacity); |
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// link into the global list |
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{ MutexLocker locker(CompileTaskAlloc_lock); |
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_next = _first; |
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_first = this; |
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} |
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} |
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CompileLog::~CompileLog() { |
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delete _out; |
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_out = NULL; |
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FREE_C_HEAP_ARRAY(char, _identities); |
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} |
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// Advance kind up to a null or space, return this tail. |
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// Make sure kind is null-terminated, not space-terminated. |
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// Use the buffer if necessary. |
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static const char* split_attrs(const char* &kind, char* buffer) { |
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const char* attrs = strchr(kind, ' '); |
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// Tease apart the first word from the rest: |
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if (attrs == NULL) { |
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return ""; // no attrs, no split |
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} else if (kind == buffer) { |
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((char*) attrs)[-1] = 0; |
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return attrs; |
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} else { |
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// park it in the buffer, so we can put a null on the end |
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assert(!(kind >= buffer && kind < buffer+100), "not obviously in buffer"); |
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int klen = attrs - kind; |
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strncpy(buffer, kind, klen); |
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buffer[klen] = 0; |
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kind = buffer; // return by reference |
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return attrs; |
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} |
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} |
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// see_tag, pop_tag: Override the default do-nothing methods on xmlStream. |
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// These methods provide a hook for managing the the extra context markup. |
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void CompileLog::see_tag(const char* tag, bool push) { |
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if (_context.size() > 0 && _out != NULL) { |
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_out->write(_context.base(), _context.size()); |
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_context.reset(); |
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} |
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xmlStream::see_tag(tag, push); |
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} |
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void CompileLog::pop_tag(const char* tag) { |
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_context.reset(); // toss any context info. |
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xmlStream::pop_tag(tag); |
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} |
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// ------------------------------------------------------------------ |
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// CompileLog::identify |
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int CompileLog::identify(ciObject* obj) { |
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if (obj == NULL) return 0; |
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int id = obj->ident(); |
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if (id < 0) return id; |
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// If it has already been identified, just return the id. |
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if (id < _identities_limit && _identities[id] != 0) return id; |
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// Lengthen the array, if necessary. |
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if (id >= _identities_capacity) { |
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int new_cap = _identities_capacity * 2; |
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if (new_cap <= id) new_cap = id + 100; |
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_identities = REALLOC_C_HEAP_ARRAY(char, _identities, new_cap); |
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_identities_capacity = new_cap; |
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} |
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while (id >= _identities_limit) { |
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_identities[_identities_limit++] = 0; |
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} |
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assert(id < _identities_limit, "oob"); |
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// Mark this id as processed. |
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// (Be sure to do this before any recursive calls to identify.) |
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_identities[id] = 1; // mark |
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// Now, print the object's identity once, in detail. |
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if (obj->is_klass()) { |
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ciKlass* klass = obj->as_klass(); |
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begin_elem("klass id='%d'", id); |
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name(klass->name()); |
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if (!klass->is_loaded()) { |
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print(" unloaded='1'"); |
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} else { |
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print(" flags='%d'", klass->modifier_flags()); |
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} |
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end_elem(); |
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} else if (obj->is_method()) { |
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ciMethod* method = obj->as_method(); |
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ciSignature* sig = method->signature(); |
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// Pre-identify items that we will need! |
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identify(sig->return_type()); |
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for (int i = 0; i < sig->count(); i++) { |
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identify(sig->type_at(i)); |
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} |
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begin_elem("method id='%d' holder='%d'", |
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id, identify(method->holder())); |
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name(method->name()); |
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print(" return='%d'", identify(sig->return_type())); |
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if (sig->count() > 0) { |
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print(" arguments='"); |
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for (int i = 0; i < sig->count(); i++) { |
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print((i == 0) ? "%d" : " %d", identify(sig->type_at(i))); |
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} |
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print("'"); |
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} |
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if (!method->is_loaded()) { |
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print(" unloaded='1'"); |
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} else { |
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print(" flags='%d'", (jchar) method->flags().as_int()); |
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// output a few metrics |
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print(" bytes='%d'", method->code_size()); |
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method->log_nmethod_identity(this); |
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//print(" count='%d'", method->invocation_count()); |
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//int bec = method->backedge_count(); |
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//if (bec != 0) print(" backedge_count='%d'", bec); |
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print(" iicount='%d'", method->interpreter_invocation_count()); |
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} |
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end_elem(); |
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} else if (obj->is_symbol()) { |
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begin_elem("symbol id='%d'", id); |
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name(obj->as_symbol()); |
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end_elem(); |
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} else if (obj->is_null_object()) { |
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elem("null_object id='%d'", id); |
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} else if (obj->is_type()) { |
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BasicType type = obj->as_type()->basic_type(); |
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elem("type id='%d' name='%s'", id, type2name(type)); |
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} else { |
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// Should not happen. |
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elem("unknown id='%d'", id); |
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} |
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return id; |
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} |
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void CompileLog::name(ciSymbol* name) { |
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if (name == NULL) return; |
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print(" name='"); |
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name->print_symbol_on(text()); // handles quoting conventions |
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print("'"); |
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} |
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// ------------------------------------------------------------------ |
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// CompileLog::clear_identities |
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// Forget which identities have been printed. |
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void CompileLog::clear_identities() { |
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_identities_limit = 0; |
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} |
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// ------------------------------------------------------------------ |
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// CompileLog::finish_log_on_error |
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// |
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// Note: This function is called after fatal error, avoid unnecessary memory |
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// or stack allocation, use only async-safe functions. It's possible JVM is |
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// only partially initialized. |
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void CompileLog::finish_log_on_error(outputStream* file, char* buf, int buflen) { |
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static bool called_exit = false; |
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if (called_exit) return; |
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called_exit = true; |
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for (CompileLog* log = _first; log != NULL; log = log->_next) { |
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log->flush(); |
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const char* partial_file = log->file(); |
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int partial_fd = open(partial_file, O_RDONLY); |
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if (partial_fd != -1) { |
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// print/print_cr may need to allocate large stack buffer to format |
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// strings, here we use snprintf() and print_raw() instead. |
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file->print_raw("<compilation_log thread='"); |
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jio_snprintf(buf, buflen, UINTX_FORMAT, log->thread_id()); |
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file->print_raw(buf); |
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file->print_raw_cr("'>"); |
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size_t nr; // number read into buf from partial log |
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// Copy data up to the end of the last <event> element: |
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julong to_read = log->_file_end; |
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while (to_read > 0) { |
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if (to_read < (julong)buflen) |
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nr = (size_t)to_read; |
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else nr = buflen; |
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nr = read(partial_fd, buf, (int)nr); |
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if (nr <= 0) break; |
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to_read -= (julong)nr; |
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file->write(buf, nr); |
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} |
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// Copy any remaining data inside a quote: |
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bool saw_slop = false; |
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int end_cdata = 0; // state machine [0..2] watching for too many "]]" |
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while ((nr = read(partial_fd, buf, buflen)) > 0) { |
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if (!saw_slop) { |
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file->print_raw_cr("<fragment>"); |
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file->print_raw_cr("<![CDATA["); |
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saw_slop = true; |
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} |
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// The rest of this loop amounts to a simple copy operation: |
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// { file->write(buf, nr); } |
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// However, it must sometimes output the buffer in parts, |
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// in case there is a CDATA quote embedded in the fragment. |
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const char* bufp; // pointer into buf |
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size_t nw; // number written in each pass of the following loop: |
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for (bufp = buf; nr > 0; nr -= nw, bufp += nw) { |
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// Write up to any problematic CDATA delimiter (usually all of nr). |
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for (nw = 0; nw < nr; nw++) { |
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// First, scan ahead into the buf, checking the state machine. |
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switch (bufp[nw]) { |
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case ']': |
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if (end_cdata < 2) end_cdata += 1; // saturating counter |
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continue; // keep scanning |
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case '>': |
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if (end_cdata == 2) break; // found CDATA delimiter! |
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// else fall through: |
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default: |
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end_cdata = 0; |
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continue; // keep scanning |
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} |
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// If we get here, nw is pointing at a bad '>'. |
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// It is very rare for this to happen. |
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// However, this code has been tested by introducing |
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// CDATA sequences into the compilation log. |
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break; |
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} |
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// Now nw is the number of characters to write, usually == nr. |
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file->write(bufp, nw); |
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if (nw < nr) { |
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// We are about to go around the loop again. |
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// But first, disrupt the ]]> by closing and reopening the quote. |
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file->print_raw("]]><![CDATA["); |
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end_cdata = 0; // reset state machine |
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} |
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} |
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} |
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if (saw_slop) { |
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file->print_raw_cr("]]>"); |
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file->print_raw_cr("</fragment>"); |
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} |
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file->print_raw_cr("</compilation_log>"); |
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close(partial_fd); |
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unlink(partial_file); |
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} |
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} |
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} |
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// ------------------------------------------------------------------ |
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// CompileLog::finish_log |
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// |
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// Called during normal shutdown. For now, any clean-up needed in normal |
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// shutdown is also needed in VM abort, so is covered by finish_log_on_error(). |
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// Just allocate a buffer and call finish_log_on_error(). |
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void CompileLog::finish_log(outputStream* file) { |
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char buf[4 * K]; |
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finish_log_on_error(file, buf, sizeof(buf)); |
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} |