Mercurial > hg > graal-compiler
view src/share/vm/compiler/compileLog.cpp @ 3837:43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
Summary: Added feedback disabling flag to common(), fixed handling of TieredStopAtLevel.
Reviewed-by: kvn, never
author | iveresov |
---|---|
date | Wed, 20 Jul 2011 18:04:17 -0700 |
parents | f95d63e2154a |
children | d2a62e0f25eb |
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/* * Copyright (c) 2002, 2010, 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 "ci/ciMethod.hpp" #include "compiler/compileLog.hpp" #include "memory/allocation.inline.hpp" #include "oops/methodOop.hpp" #include "runtime/mutexLocker.hpp" #include "runtime/os.hpp" 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)); }