Mercurial > hg > truffle
diff src/share/vm/compiler/compileLog.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | cff162798819 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/compiler/compileLog.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,294 @@ +/* + * Copyright 2002-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_compileLog.cpp.incl" + +CompileLog* CompileLog::_first = NULL; + +// ------------------------------------------------------------------ +// CompileLog::CompileLog +CompileLog::CompileLog(const char* file, FILE* fp, intx thread_id) + : _context(_context_buffer, sizeof(_context_buffer)) +{ + initialize(new(ResourceObj::C_HEAP) fileStream(fp)); + _file = file; + _file_end = 0; + _thread_id = thread_id; + + _identities_limit = 0; + _identities_capacity = 400; + _identities = NEW_C_HEAP_ARRAY(char, _identities_capacity); + + // link into the global list + { MutexLocker locker(CompileTaskAlloc_lock); + _next = _first; + _first = this; + } +} + +CompileLog::~CompileLog() { + delete _out; + _out = NULL; + FREE_C_HEAP_ARRAY(char, _identities); +} + + +// Advance kind up to a null or space, return this tail. +// Make sure kind is null-terminated, not space-terminated. +// Use the buffer if necessary. +static const char* split_attrs(const char* &kind, char* buffer) { + const char* attrs = strchr(kind, ' '); + // Tease apart the first word from the rest: + if (attrs == NULL) { + return ""; // no attrs, no split + } else if (kind == buffer) { + ((char*) attrs)[-1] = 0; + return attrs; + } else { + // park it in the buffer, so we can put a null on the end + assert(!(kind >= buffer && kind < buffer+100), "not obviously in buffer") + int klen = attrs - kind; + strncpy(buffer, kind, klen); + buffer[klen] = 0; + kind = buffer; // return by reference + return attrs; + } +} + +// see_tag, pop_tag: Override the default do-nothing methods on xmlStream. +// These methods provide a hook for managing the the extra context markup. +void CompileLog::see_tag(const char* tag, bool push) { + if (_context.size() > 0 && _out != NULL) { + _out->write(_context.base(), _context.size()); + _context.reset(); + } + xmlStream::see_tag(tag, push); +} +void CompileLog::pop_tag(const char* tag) { + _context.reset(); // toss any context info. + xmlStream::pop_tag(tag); +} + + +// ------------------------------------------------------------------ +// CompileLog::identify +int CompileLog::identify(ciObject* obj) { + if (obj == NULL) return 0; + int id = obj->ident(); + if (id < 0) return id; + // If it has already been identified, just return the id. + if (id < _identities_limit && _identities[id] != 0) return id; + // Lengthen the array, if necessary. + if (id >= _identities_capacity) { + int new_cap = _identities_capacity * 2; + if (new_cap <= id) new_cap = id + 100; + _identities = REALLOC_C_HEAP_ARRAY(char, _identities, new_cap); + _identities_capacity = new_cap; + } + while (id >= _identities_limit) { + _identities[_identities_limit++] = 0; + } + assert(id < _identities_limit, "oob"); + // Mark this id as processed. + // (Be sure to do this before any recursive calls to identify.) + _identities[id] = 1; // mark + + // Now, print the object's identity once, in detail. + if (obj->is_klass()) { + ciKlass* klass = obj->as_klass(); + begin_elem("klass id='%d'", id); + name(klass->name()); + if (!klass->is_loaded()) { + print(" unloaded='1'"); + } else { + print(" flags='%d'", klass->modifier_flags()); + } + end_elem(); + } else if (obj->is_method()) { + ciMethod* method = obj->as_method(); + ciSignature* sig = method->signature(); + // Pre-identify items that we will need! + identify(sig->return_type()); + for (int i = 0; i < sig->count(); i++) { + identify(sig->type_at(i)); + } + begin_elem("method id='%d' holder='%d'", + id, identify(method->holder())); + name(method->name()); + print(" return='%d'", identify(sig->return_type())); + if (sig->count() > 0) { + print(" arguments='"); + for (int i = 0; i < sig->count(); i++) { + print((i == 0) ? "%d" : " %d", identify(sig->type_at(i))); + } + print("'"); + } + if (!method->is_loaded()) { + print(" unloaded='1'"); + } else { + print(" flags='%d'", (jchar) method->flags().as_int()); + // output a few metrics + print(" bytes='%d'", method->code_size()); + method->log_nmethod_identity(this); + //print(" count='%d'", method->invocation_count()); + //int bec = method->backedge_count(); + //if (bec != 0) print(" backedge_count='%d'", bec); + print(" iicount='%d'", method->interpreter_invocation_count()); + } + end_elem(); + } else if (obj->is_symbol()) { + begin_elem("symbol id='%d'", id); + name(obj->as_symbol()); + end_elem(); + } else if (obj->is_null_object()) { + elem("null_object id='%d'", id); + } else if (obj->is_type()) { + BasicType type = obj->as_type()->basic_type(); + elem("type id='%d' name='%s'", id, type2name(type)); + } else { + // Should not happen. + elem("unknown id='%d'", id); + } + return id; +} + +void CompileLog::name(ciSymbol* name) { + if (name == NULL) return; + print(" name='"); + name->print_symbol_on(text()); // handles quoting conventions + print("'"); +} + + +// ------------------------------------------------------------------ +// CompileLog::clear_identities +// Forget which identities have been printed. +void CompileLog::clear_identities() { + _identities_limit = 0; +} + +// ------------------------------------------------------------------ +// CompileLog::finish_log_on_error +// +// Note: This function is called after fatal error, avoid unnecessary memory +// or stack allocation, use only async-safe functions. It's possible JVM is +// only partially initialized. +void CompileLog::finish_log_on_error(outputStream* file, char* buf, int buflen) { + static bool called_exit = false; + if (called_exit) return; + called_exit = true; + + for (CompileLog* log = _first; log != NULL; log = log->_next) { + log->flush(); + const char* partial_file = log->file(); + int partial_fd = open(partial_file, O_RDONLY); + if (partial_fd != -1) { + // print/print_cr may need to allocate large stack buffer to format + // strings, here we use snprintf() and print_raw() instead. + file->print_raw("<compilation_log thread='"); + jio_snprintf(buf, buflen, UINTX_FORMAT, log->thread_id()); + file->print_raw(buf); + file->print_raw_cr("'>"); + + size_t nr; // number read into buf from partial log + // Copy data up to the end of the last <event> element: + julong to_read = log->_file_end; + while (to_read > 0) { + if (to_read < (julong)buflen) + nr = (size_t)to_read; + else nr = buflen; + nr = read(partial_fd, buf, (int)nr); + if (nr <= 0) break; + to_read -= (julong)nr; + file->write(buf, nr); + } + + // Copy any remaining data inside a quote: + bool saw_slop = false; + int end_cdata = 0; // state machine [0..2] watching for too many "]]" + while ((nr = read(partial_fd, buf, buflen)) > 0) { + if (!saw_slop) { + file->print_raw_cr("<fragment>"); + file->print_raw_cr("<![CDATA["); + saw_slop = true; + } + // The rest of this loop amounts to a simple copy operation: + // { file->write(buf, nr); } + // However, it must sometimes output the buffer in parts, + // in case there is a CDATA quote embedded in the fragment. + const char* bufp; // pointer into buf + size_t nw; // number written in each pass of the following loop: + for (bufp = buf; nr > 0; nr -= nw, bufp += nw) { + // Write up to any problematic CDATA delimiter (usually all of nr). + for (nw = 0; nw < nr; nw++) { + // First, scan ahead into the buf, checking the state machine. + switch (bufp[nw]) { + case ']': + if (end_cdata < 2) end_cdata += 1; // saturating counter + continue; // keep scanning + case '>': + if (end_cdata == 2) break; // found CDATA delimiter! + // else fall through: + default: + end_cdata = 0; + continue; // keep scanning + } + // If we get here, nw is pointing at a bad '>'. + // It is very rare for this to happen. + // However, this code has been tested by introducing + // CDATA sequences into the compilation log. + break; + } + // Now nw is the number of characters to write, usually == nr. + file->write(bufp, nw); + if (nw < nr) { + // We are about to go around the loop again. + // But first, disrupt the ]]> by closing and reopening the quote. + file->print_raw("]]><![CDATA["); + end_cdata = 0; // reset state machine + } + } + } + if (saw_slop) { + file->print_raw_cr("]]>"); + file->print_raw_cr("</fragment>"); + } + file->print_raw_cr("</compilation_log>"); + close(partial_fd); + unlink(partial_file); + } + } +} + +// ------------------------------------------------------------------ +// CompileLog::finish_log +// +// Called during normal shutdown. For now, any clean-up needed in normal +// shutdown is also needed in VM abort, so is covered by finish_log_on_error(). +// Just allocate a buffer and call finish_log_on_error(). +void CompileLog::finish_log(outputStream* file) { + char buf[4 * K]; + finish_log_on_error(file, buf, sizeof(buf)); +}