--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/compiler/compileLog.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,347 @@
+/*
+ * Copyright (c) 2002, 2017, 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 "code/codeCache.hpp"
+#include "compiler/compileLog.hpp"
+#include "memory/allocation.inline.hpp"
+#include "oops/method.hpp"
+#include "prims/jvm.h"
+#include "runtime/mutexLocker.hpp"
+#include "runtime/os.hpp"
+
+CompileLog* CompileLog::_first = NULL;
+
+// ------------------------------------------------------------------
+// CompileLog::CompileLog
+CompileLog::CompileLog(const char* file_name, FILE* fp, intx thread_id)
+ : _context(_context_buffer, sizeof(_context_buffer))
+{
+ initialize(new(ResourceObj::C_HEAP, mtCompiler) fileStream(fp, true));
+ _file_end = 0;
+ _thread_id = thread_id;
+
+ _identities_limit = 0;
+ _identities_capacity = 400;
+ _identities = NEW_C_HEAP_ARRAY(char, _identities_capacity, mtCompiler);
+ _file = NEW_C_HEAP_ARRAY(char, strlen(file_name)+1, mtCompiler);
+ strcpy((char*)_file, file_name);
+
+ // link into the global list
+ { MutexLocker locker(CompileTaskAlloc_lock);
+ _next = _first;
+ _first = this;
+ }
+}
+
+CompileLog::~CompileLog() {
+ delete _out; // Close fd in fileStream::~fileStream()
+ _out = NULL;
+ // Remove partial file after merging in CompileLog::finish_log_on_error
+ unlink(_file);
+ FREE_C_HEAP_ARRAY(char, _identities);
+ FREE_C_HEAP_ARRAY(char, _file);
+}
+
+
+// see_tag, pop_tag: Override the default do-nothing methods on xmlStream.
+// These methods provide a hook for managing 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(ciBaseObject* 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, mtCompiler);
+ _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_metadata()) {
+ ciMetadata* mobj = obj->as_metadata();
+ if (mobj->is_klass()) {
+ ciKlass* klass = mobj->as_klass();
+ begin_elem("klass id='%d'", id);
+ name(klass);
+ if (!klass->is_loaded()) {
+ print(" unloaded='1'");
+ } else {
+ print(" flags='%d'", klass->modifier_flags());
+ }
+ end_elem();
+ } else if (mobj->is_method()) {
+ ciMethod* method = mobj->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 (mobj->is_type()) {
+ BasicType type = mobj->as_type()->basic_type();
+ elem("type id='%d' name='%s'", id, type2name(type));
+ } else {
+ // Should not happen.
+ elem("unknown id='%d'", id);
+ ShouldNotReachHere();
+ }
+ } else if (obj->is_symbol()) {
+ begin_elem("symbol id='%d'", id);
+ name(obj->as_symbol());
+ end_elem();
+ } 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("'");
+}
+
+void CompileLog::name(ciKlass* k) {
+ print(" name='");
+ if (!k->is_loaded()) {
+ text()->print("%s", k->name()->as_klass_external_name());
+ } else {
+ text()->print("%s", k->external_name());
+ }
+ 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;
+
+ CompileLog* log = _first;
+ while (log != NULL) {
+ 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-1)) > 0) {
+ buf[buflen-1] = '\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);
+ }
+ CompileLog* next_log = log->_next;
+ delete log; // Removes partial file
+ log = next_log;
+ }
+ _first = NULL;
+}
+
+// ------------------------------------------------------------------
+// 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));
+}
+
+// ------------------------------------------------------------------
+// CompileLog::inline_success
+//
+// Print about successful method inlining.
+void CompileLog::inline_success(const char* reason) {
+ begin_elem("inline_success reason='");
+ text("%s", reason);
+ end_elem("'");
+}
+
+// ------------------------------------------------------------------
+// CompileLog::inline_fail
+//
+// Print about failed method inlining.
+void CompileLog::inline_fail(const char* reason) {
+ begin_elem("inline_fail reason='");
+ text("%s", reason);
+ end_elem("'");
+}
+
+// ------------------------------------------------------------------
+// CompileLog::set_context
+//
+// Set XML tag as an optional marker - it is printed only if
+// there are other entries after until it is reset.
+void CompileLog::set_context(const char* format, ...) {
+ va_list ap;
+ va_start(ap, format);
+ clear_context();
+ _context.print("<");
+ _context.vprint(format, ap);
+ _context.print_cr("/>");
+ va_end(ap);
+}
+
+// ------------------------------------------------------------------
+// CompileLog::code_cache_state
+//
+// Print code cache state.
+void CompileLog::code_cache_state() {
+ begin_elem("code_cache");
+ CodeCache::log_state(this);
+ end_elem("%s", "");
+}