--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/utilities/ostream.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1102 @@
+/*
+ * Copyright (c) 1997, 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 "compiler/compileLog.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "runtime/arguments.hpp"
+#include "runtime/os.hpp"
+#include "runtime/vm_version.hpp"
+#include "utilities/defaultStream.hpp"
+#include "utilities/macros.hpp"
+#include "utilities/ostream.hpp"
+#include "utilities/vmError.hpp"
+#include "utilities/xmlstream.hpp"
+
+extern "C" void jio_print(const char* s); // Declarationtion of jvm method
+
+outputStream::outputStream(int width) {
+ _width = width;
+ _position = 0;
+ _newlines = 0;
+ _precount = 0;
+ _indentation = 0;
+ _scratch = NULL;
+ _scratch_len = 0;
+}
+
+outputStream::outputStream(int width, bool has_time_stamps) {
+ _width = width;
+ _position = 0;
+ _newlines = 0;
+ _precount = 0;
+ _indentation = 0;
+ _scratch = NULL;
+ _scratch_len = 0;
+ if (has_time_stamps) _stamp.update();
+}
+
+void outputStream::update_position(const char* s, size_t len) {
+ for (size_t i = 0; i < len; i++) {
+ char ch = s[i];
+ if (ch == '\n') {
+ _newlines += 1;
+ _precount += _position + 1;
+ _position = 0;
+ } else if (ch == '\t') {
+ int tw = 8 - (_position & 7);
+ _position += tw;
+ _precount -= tw-1; // invariant: _precount + _position == total count
+ } else {
+ _position += 1;
+ }
+ }
+}
+
+// Execute a vsprintf, using the given buffer if necessary.
+// Return a pointer to the formatted string.
+const char* outputStream::do_vsnprintf(char* buffer, size_t buflen,
+ const char* format, va_list ap,
+ bool add_cr,
+ size_t& result_len) {
+ assert(buflen >= 2, "buffer too small");
+
+ const char* result;
+ if (add_cr) buflen--;
+ if (!strchr(format, '%')) {
+ // constant format string
+ result = format;
+ result_len = strlen(result);
+ if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
+ } else if (format[0] == '%' && format[1] == 's' && format[2] == '\0') {
+ // trivial copy-through format string
+ result = va_arg(ap, const char*);
+ result_len = strlen(result);
+ if (add_cr && result_len >= buflen) result_len = buflen-1; // truncate
+ } else {
+ // Handle truncation:
+ // posix: upon truncation, vsnprintf returns number of bytes which
+ // would have been written (excluding terminating zero) had the buffer
+ // been large enough
+ // windows: upon truncation, vsnprintf returns -1
+ const int written = vsnprintf(buffer, buflen, format, ap);
+ result = buffer;
+ if (written < (int) buflen && written >= 0) {
+ result_len = written;
+ } else {
+ DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
+ result_len = buflen - 1;
+ buffer[result_len] = 0;
+ }
+ }
+ if (add_cr) {
+ if (result != buffer) {
+ memcpy(buffer, result, result_len);
+ result = buffer;
+ }
+ buffer[result_len++] = '\n';
+ buffer[result_len] = 0;
+ }
+ return result;
+}
+
+void outputStream::do_vsnprintf_and_write_with_automatic_buffer(const char* format, va_list ap, bool add_cr) {
+ char buffer[O_BUFLEN];
+ size_t len;
+ const char* str = do_vsnprintf(buffer, sizeof(buffer), format, ap, add_cr, len);
+ write(str, len);
+}
+
+void outputStream::do_vsnprintf_and_write_with_scratch_buffer(const char* format, va_list ap, bool add_cr) {
+ size_t len;
+ const char* str = do_vsnprintf(_scratch, _scratch_len, format, ap, add_cr, len);
+ write(str, len);
+}
+
+void outputStream::do_vsnprintf_and_write(const char* format, va_list ap, bool add_cr) {
+ if (_scratch) {
+ do_vsnprintf_and_write_with_scratch_buffer(format, ap, add_cr);
+ } else {
+ do_vsnprintf_and_write_with_automatic_buffer(format, ap, add_cr);
+ }
+}
+
+void outputStream::print(const char* format, ...) {
+ va_list ap;
+ va_start(ap, format);
+ do_vsnprintf_and_write(format, ap, false);
+ va_end(ap);
+}
+
+void outputStream::print_cr(const char* format, ...) {
+ va_list ap;
+ va_start(ap, format);
+ do_vsnprintf_and_write(format, ap, true);
+ va_end(ap);
+}
+
+void outputStream::vprint(const char *format, va_list argptr) {
+ do_vsnprintf_and_write(format, argptr, false);
+}
+
+void outputStream::vprint_cr(const char* format, va_list argptr) {
+ do_vsnprintf_and_write(format, argptr, true);
+}
+
+void outputStream::fill_to(int col) {
+ int need_fill = col - position();
+ sp(need_fill);
+}
+
+void outputStream::move_to(int col, int slop, int min_space) {
+ if (position() >= col + slop)
+ cr();
+ int need_fill = col - position();
+ if (need_fill < min_space)
+ need_fill = min_space;
+ sp(need_fill);
+}
+
+void outputStream::put(char ch) {
+ assert(ch != 0, "please fix call site");
+ char buf[] = { ch, '\0' };
+ write(buf, 1);
+}
+
+#define SP_USE_TABS false
+
+void outputStream::sp(int count) {
+ if (count < 0) return;
+ if (SP_USE_TABS && count >= 8) {
+ int target = position() + count;
+ while (count >= 8) {
+ this->write("\t", 1);
+ count -= 8;
+ }
+ count = target - position();
+ }
+ while (count > 0) {
+ int nw = (count > 8) ? 8 : count;
+ this->write(" ", nw);
+ count -= nw;
+ }
+}
+
+void outputStream::cr() {
+ this->write("\n", 1);
+}
+
+void outputStream::stamp() {
+ if (! _stamp.is_updated()) {
+ _stamp.update(); // start at 0 on first call to stamp()
+ }
+
+ // outputStream::stamp() may get called by ostream_abort(), use snprintf
+ // to avoid allocating large stack buffer in print().
+ char buf[40];
+ jio_snprintf(buf, sizeof(buf), "%.3f", _stamp.seconds());
+ print_raw(buf);
+}
+
+void outputStream::stamp(bool guard,
+ const char* prefix,
+ const char* suffix) {
+ if (!guard) {
+ return;
+ }
+ print_raw(prefix);
+ stamp();
+ print_raw(suffix);
+}
+
+void outputStream::date_stamp(bool guard,
+ const char* prefix,
+ const char* suffix) {
+ if (!guard) {
+ return;
+ }
+ print_raw(prefix);
+ static const char error_time[] = "yyyy-mm-ddThh:mm:ss.mmm+zzzz";
+ static const int buffer_length = 32;
+ char buffer[buffer_length];
+ const char* iso8601_result = os::iso8601_time(buffer, buffer_length);
+ if (iso8601_result != NULL) {
+ print_raw(buffer);
+ } else {
+ print_raw(error_time);
+ }
+ print_raw(suffix);
+ return;
+}
+
+outputStream& outputStream::indent() {
+ while (_position < _indentation) sp();
+ return *this;
+}
+
+void outputStream::print_jlong(jlong value) {
+ print(JLONG_FORMAT, value);
+}
+
+void outputStream::print_julong(julong value) {
+ print(JULONG_FORMAT, value);
+}
+
+/**
+ * This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
+ * <hex-address>: 8 * <hex-halfword> <ascii translation (optional)>
+ * example:
+ * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............
+ * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... ....
+ * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......]
+ * ...
+ *
+ * indent is applied to each line. Ends with a CR.
+ */
+void outputStream::print_data(void* data, size_t len, bool with_ascii) {
+ size_t limit = (len + 16) / 16 * 16;
+ for (size_t i = 0; i < limit; ++i) {
+ if (i % 16 == 0) {
+ indent().print(INTPTR_FORMAT_W(07) ":", i);
+ }
+ if (i % 2 == 0) {
+ print(" ");
+ }
+ if (i < len) {
+ print("%02x", ((unsigned char*)data)[i]);
+ } else {
+ print(" ");
+ }
+ if ((i + 1) % 16 == 0) {
+ if (with_ascii) {
+ print(" ");
+ for (size_t j = 0; j < 16; ++j) {
+ size_t idx = i + j - 15;
+ if (idx < len) {
+ char c = ((char*)data)[idx];
+ print("%c", c >= 32 && c <= 126 ? c : '.');
+ }
+ }
+ }
+ cr();
+ }
+ }
+}
+
+stringStream::stringStream(size_t initial_size) : outputStream() {
+ buffer_length = initial_size;
+ buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
+ buffer_pos = 0;
+ buffer_fixed = false;
+ DEBUG_ONLY(rm = Thread::current()->current_resource_mark();)
+}
+
+// useful for output to fixed chunks of memory, such as performance counters
+stringStream::stringStream(char* fixed_buffer, size_t fixed_buffer_size) : outputStream() {
+ buffer_length = fixed_buffer_size;
+ buffer = fixed_buffer;
+ buffer_pos = 0;
+ buffer_fixed = true;
+}
+
+void stringStream::write(const char* s, size_t len) {
+ size_t write_len = len; // number of non-null bytes to write
+ size_t end = buffer_pos + len + 1; // position after write and final '\0'
+ if (end > buffer_length) {
+ if (buffer_fixed) {
+ // if buffer cannot resize, silently truncate
+ end = buffer_length;
+ write_len = end - buffer_pos - 1; // leave room for the final '\0'
+ } else {
+ // For small overruns, double the buffer. For larger ones,
+ // increase to the requested size.
+ if (end < buffer_length * 2) {
+ end = buffer_length * 2;
+ }
+ char* oldbuf = buffer;
+ assert(rm == NULL || Thread::current()->current_resource_mark() == rm,
+ "StringStream is re-allocated with a different ResourceMark. Current: "
+ PTR_FORMAT " original: " PTR_FORMAT,
+ p2i(Thread::current()->current_resource_mark()), p2i(rm));
+ buffer = NEW_RESOURCE_ARRAY(char, end);
+ if (buffer_pos > 0) {
+ memcpy(buffer, oldbuf, buffer_pos);
+ }
+ buffer_length = end;
+ }
+ }
+ // invariant: buffer is always null-terminated
+ guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
+ if (write_len > 0) {
+ buffer[buffer_pos + write_len] = 0;
+ memcpy(buffer + buffer_pos, s, write_len);
+ buffer_pos += write_len;
+ }
+
+ // Note that the following does not depend on write_len.
+ // This means that position and count get updated
+ // even when overflow occurs.
+ update_position(s, len);
+}
+
+char* stringStream::as_string() {
+ char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos + 1);
+ strncpy(copy, buffer, buffer_pos);
+ copy[buffer_pos] = 0; // terminating null
+ return copy;
+}
+
+stringStream::~stringStream() {}
+
+xmlStream* xtty;
+outputStream* tty;
+CDS_ONLY(fileStream* classlist_file;) // Only dump the classes that can be stored into the CDS archive
+extern Mutex* tty_lock;
+
+#define EXTRACHARLEN 32
+#define CURRENTAPPX ".current"
+// convert YYYY-MM-DD HH:MM:SS to YYYY-MM-DD_HH-MM-SS
+char* get_datetime_string(char *buf, size_t len) {
+ os::local_time_string(buf, len);
+ int i = (int)strlen(buf);
+ while (--i >= 0) {
+ if (buf[i] == ' ') buf[i] = '_';
+ else if (buf[i] == ':') buf[i] = '-';
+ }
+ return buf;
+}
+
+static const char* make_log_name_internal(const char* log_name, const char* force_directory,
+ int pid, const char* tms) {
+ const char* basename = log_name;
+ char file_sep = os::file_separator()[0];
+ const char* cp;
+ char pid_text[32];
+
+ for (cp = log_name; *cp != '\0'; cp++) {
+ if (*cp == '/' || *cp == file_sep) {
+ basename = cp + 1;
+ }
+ }
+ const char* nametail = log_name;
+ // Compute buffer length
+ size_t buffer_length;
+ if (force_directory != NULL) {
+ buffer_length = strlen(force_directory) + strlen(os::file_separator()) +
+ strlen(basename) + 1;
+ } else {
+ buffer_length = strlen(log_name) + 1;
+ }
+
+ const char* pts = strstr(basename, "%p");
+ int pid_pos = (pts == NULL) ? -1 : (pts - nametail);
+
+ if (pid_pos >= 0) {
+ jio_snprintf(pid_text, sizeof(pid_text), "pid%u", pid);
+ buffer_length += strlen(pid_text);
+ }
+
+ pts = strstr(basename, "%t");
+ int tms_pos = (pts == NULL) ? -1 : (pts - nametail);
+ if (tms_pos >= 0) {
+ buffer_length += strlen(tms);
+ }
+
+ // File name is too long.
+ if (buffer_length > JVM_MAXPATHLEN) {
+ return NULL;
+ }
+
+ // Create big enough buffer.
+ char *buf = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
+
+ strcpy(buf, "");
+ if (force_directory != NULL) {
+ strcat(buf, force_directory);
+ strcat(buf, os::file_separator());
+ nametail = basename; // completely skip directory prefix
+ }
+
+ // who is first, %p or %t?
+ int first = -1, second = -1;
+ const char *p1st = NULL;
+ const char *p2nd = NULL;
+
+ if (pid_pos >= 0 && tms_pos >= 0) {
+ // contains both %p and %t
+ if (pid_pos < tms_pos) {
+ // case foo%pbar%tmonkey.log
+ first = pid_pos;
+ p1st = pid_text;
+ second = tms_pos;
+ p2nd = tms;
+ } else {
+ // case foo%tbar%pmonkey.log
+ first = tms_pos;
+ p1st = tms;
+ second = pid_pos;
+ p2nd = pid_text;
+ }
+ } else if (pid_pos >= 0) {
+ // contains %p only
+ first = pid_pos;
+ p1st = pid_text;
+ } else if (tms_pos >= 0) {
+ // contains %t only
+ first = tms_pos;
+ p1st = tms;
+ }
+
+ int buf_pos = (int)strlen(buf);
+ const char* tail = nametail;
+
+ if (first >= 0) {
+ tail = nametail + first + 2;
+ strncpy(&buf[buf_pos], nametail, first);
+ strcpy(&buf[buf_pos + first], p1st);
+ buf_pos = (int)strlen(buf);
+ if (second >= 0) {
+ strncpy(&buf[buf_pos], tail, second - first - 2);
+ strcpy(&buf[buf_pos + second - first - 2], p2nd);
+ tail = nametail + second + 2;
+ }
+ }
+ strcat(buf, tail); // append rest of name, or all of name
+ return buf;
+}
+
+// log_name comes from -XX:LogFile=log_name or
+// -XX:DumpLoadedClassList=<file_name>
+// in log_name, %p => pid1234 and
+// %t => YYYY-MM-DD_HH-MM-SS
+static const char* make_log_name(const char* log_name, const char* force_directory) {
+ char timestr[32];
+ get_datetime_string(timestr, sizeof(timestr));
+ return make_log_name_internal(log_name, force_directory, os::current_process_id(),
+ timestr);
+}
+
+fileStream::fileStream(const char* file_name) {
+ _file = fopen(file_name, "w");
+ if (_file != NULL) {
+ _need_close = true;
+ } else {
+ warning("Cannot open file %s due to %s\n", file_name, os::strerror(errno));
+ _need_close = false;
+ }
+}
+
+fileStream::fileStream(const char* file_name, const char* opentype) {
+ _file = fopen(file_name, opentype);
+ if (_file != NULL) {
+ _need_close = true;
+ } else {
+ warning("Cannot open file %s due to %s\n", file_name, os::strerror(errno));
+ _need_close = false;
+ }
+}
+
+void fileStream::write(const char* s, size_t len) {
+ if (_file != NULL) {
+ // Make an unused local variable to avoid warning from gcc 4.x compiler.
+ size_t count = fwrite(s, 1, len, _file);
+ }
+ update_position(s, len);
+}
+
+long fileStream::fileSize() {
+ long size = -1;
+ if (_file != NULL) {
+ long pos = ::ftell(_file);
+ if (::fseek(_file, 0, SEEK_END) == 0) {
+ size = ::ftell(_file);
+ }
+ ::fseek(_file, pos, SEEK_SET);
+ }
+ return size;
+}
+
+char* fileStream::readln(char *data, int count ) {
+ char * ret = ::fgets(data, count, _file);
+ //Get rid of annoying \n char
+ data[::strlen(data)-1] = '\0';
+ return ret;
+}
+
+fileStream::~fileStream() {
+ if (_file != NULL) {
+ if (_need_close) fclose(_file);
+ _file = NULL;
+ }
+}
+
+void fileStream::flush() {
+ fflush(_file);
+}
+
+fdStream::fdStream(const char* file_name) {
+ _fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ _need_close = true;
+}
+
+fdStream::~fdStream() {
+ if (_fd != -1) {
+ if (_need_close) close(_fd);
+ _fd = -1;
+ }
+}
+
+void fdStream::write(const char* s, size_t len) {
+ if (_fd != -1) {
+ // Make an unused local variable to avoid warning from gcc 4.x compiler.
+ size_t count = ::write(_fd, s, (int)len);
+ }
+ update_position(s, len);
+}
+
+defaultStream* defaultStream::instance = NULL;
+int defaultStream::_output_fd = 1;
+int defaultStream::_error_fd = 2;
+FILE* defaultStream::_output_stream = stdout;
+FILE* defaultStream::_error_stream = stderr;
+
+#define LOG_MAJOR_VERSION 160
+#define LOG_MINOR_VERSION 1
+
+void defaultStream::init() {
+ _inited = true;
+ if (LogVMOutput || LogCompilation) {
+ init_log();
+ }
+}
+
+bool defaultStream::has_log_file() {
+ // lazily create log file (at startup, LogVMOutput is false even
+ // if +LogVMOutput is used, because the flags haven't been parsed yet)
+ // For safer printing during fatal error handling, do not init logfile
+ // if a VM error has been reported.
+ if (!_inited && !VMError::is_error_reported()) init();
+ return _log_file != NULL;
+}
+
+fileStream* defaultStream::open_file(const char* log_name) {
+ const char* try_name = make_log_name(log_name, NULL);
+ if (try_name == NULL) {
+ warning("Cannot open file %s: file name is too long.\n", log_name);
+ return NULL;
+ }
+
+ fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
+ FREE_C_HEAP_ARRAY(char, try_name);
+ if (file->is_open()) {
+ return file;
+ }
+
+ // Try again to open the file in the temp directory.
+ delete file;
+ char warnbuf[O_BUFLEN*2];
+ jio_snprintf(warnbuf, sizeof(warnbuf), "Warning: Cannot open log file: %s\n", log_name);
+ // Note: This feature is for maintainer use only. No need for L10N.
+ jio_print(warnbuf);
+ try_name = make_log_name(log_name, os::get_temp_directory());
+ if (try_name == NULL) {
+ warning("Cannot open file %s: file name is too long for directory %s.\n", log_name, os::get_temp_directory());
+ return NULL;
+ }
+
+ jio_snprintf(warnbuf, sizeof(warnbuf),
+ "Warning: Forcing option -XX:LogFile=%s\n", try_name);
+ jio_print(warnbuf);
+
+ file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
+ FREE_C_HEAP_ARRAY(char, try_name);
+ if (file->is_open()) {
+ return file;
+ }
+
+ delete file;
+ return NULL;
+}
+
+void defaultStream::init_log() {
+ // %%% Need a MutexLocker?
+ const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log";
+ fileStream* file = open_file(log_name);
+
+ if (file != NULL) {
+ _log_file = file;
+ _outer_xmlStream = new(ResourceObj::C_HEAP, mtInternal) xmlStream(file);
+ start_log();
+ } else {
+ // and leave xtty as NULL
+ LogVMOutput = false;
+ DisplayVMOutput = true;
+ LogCompilation = false;
+ }
+}
+
+void defaultStream::start_log() {
+ xmlStream*xs = _outer_xmlStream;
+ if (this == tty) xtty = xs;
+ // Write XML header.
+ xs->print_cr("<?xml version='1.0' encoding='UTF-8'?>");
+ // (For now, don't bother to issue a DTD for this private format.)
+ jlong time_ms = os::javaTimeMillis() - tty->time_stamp().milliseconds();
+ // %%% Should be: jlong time_ms = os::start_time_milliseconds(), if
+ // we ever get round to introduce that method on the os class
+ xs->head("hotspot_log version='%d %d'"
+ " process='%d' time_ms='" INT64_FORMAT "'",
+ LOG_MAJOR_VERSION, LOG_MINOR_VERSION,
+ os::current_process_id(), (int64_t)time_ms);
+ // Write VM version header immediately.
+ xs->head("vm_version");
+ xs->head("name"); xs->text("%s", VM_Version::vm_name()); xs->cr();
+ xs->tail("name");
+ xs->head("release"); xs->text("%s", VM_Version::vm_release()); xs->cr();
+ xs->tail("release");
+ xs->head("info"); xs->text("%s", VM_Version::internal_vm_info_string()); xs->cr();
+ xs->tail("info");
+ xs->tail("vm_version");
+ // Record information about the command-line invocation.
+ xs->head("vm_arguments"); // Cf. Arguments::print_on()
+ if (Arguments::num_jvm_flags() > 0) {
+ xs->head("flags");
+ Arguments::print_jvm_flags_on(xs->text());
+ xs->tail("flags");
+ }
+ if (Arguments::num_jvm_args() > 0) {
+ xs->head("args");
+ Arguments::print_jvm_args_on(xs->text());
+ xs->tail("args");
+ }
+ if (Arguments::java_command() != NULL) {
+ xs->head("command"); xs->text()->print_cr("%s", Arguments::java_command());
+ xs->tail("command");
+ }
+ if (Arguments::sun_java_launcher() != NULL) {
+ xs->head("launcher"); xs->text()->print_cr("%s", Arguments::sun_java_launcher());
+ xs->tail("launcher");
+ }
+ if (Arguments::system_properties() != NULL) {
+ xs->head("properties");
+ // Print it as a java-style property list.
+ // System properties don't generally contain newlines, so don't bother with unparsing.
+ outputStream *text = xs->text();
+ for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
+ assert(p->key() != NULL, "p->key() is NULL");
+ if (p->is_readable()) {
+ // Print in two stages to avoid problems with long
+ // keys/values.
+ text->print_raw(p->key());
+ text->put('=');
+ assert(p->value() != NULL, "p->value() is NULL");
+ text->print_raw_cr(p->value());
+ }
+ }
+ xs->tail("properties");
+ }
+ xs->tail("vm_arguments");
+ // tty output per se is grouped under the <tty>...</tty> element.
+ xs->head("tty");
+ // All further non-markup text gets copied to the tty:
+ xs->_text = this; // requires friend declaration!
+}
+
+// finish_log() is called during normal VM shutdown. finish_log_on_error() is
+// called by ostream_abort() after a fatal error.
+//
+void defaultStream::finish_log() {
+ xmlStream* xs = _outer_xmlStream;
+ xs->done("tty");
+
+ // Other log forks are appended here, at the End of Time:
+ CompileLog::finish_log(xs->out()); // write compile logging, if any, now
+
+ xs->done("hotspot_log");
+ xs->flush();
+
+ fileStream* file = _log_file;
+ _log_file = NULL;
+
+ delete _outer_xmlStream;
+ _outer_xmlStream = NULL;
+
+ file->flush();
+ delete file;
+}
+
+void defaultStream::finish_log_on_error(char *buf, int buflen) {
+ xmlStream* xs = _outer_xmlStream;
+
+ if (xs && xs->out()) {
+
+ xs->done_raw("tty");
+
+ // Other log forks are appended here, at the End of Time:
+ CompileLog::finish_log_on_error(xs->out(), buf, buflen); // write compile logging, if any, now
+
+ xs->done_raw("hotspot_log");
+ xs->flush();
+
+ fileStream* file = _log_file;
+ _log_file = NULL;
+ _outer_xmlStream = NULL;
+
+ if (file) {
+ file->flush();
+
+ // Can't delete or close the file because delete and fclose aren't
+ // async-safe. We are about to die, so leave it to the kernel.
+ // delete file;
+ }
+ }
+}
+
+intx defaultStream::hold(intx writer_id) {
+ bool has_log = has_log_file(); // check before locking
+ if (// impossible, but who knows?
+ writer_id == NO_WRITER ||
+
+ // bootstrap problem
+ tty_lock == NULL ||
+
+ // can't grab a lock if current Thread isn't set
+ Thread::current_or_null() == NULL ||
+
+ // developer hook
+ !SerializeVMOutput ||
+
+ // VM already unhealthy
+ VMError::is_error_reported() ||
+
+ // safepoint == global lock (for VM only)
+ (SafepointSynchronize::is_synchronizing() &&
+ Thread::current()->is_VM_thread())
+ ) {
+ // do not attempt to lock unless we know the thread and the VM is healthy
+ return NO_WRITER;
+ }
+ if (_writer == writer_id) {
+ // already held, no need to re-grab the lock
+ return NO_WRITER;
+ }
+ tty_lock->lock_without_safepoint_check();
+ // got the lock
+ if (writer_id != _last_writer) {
+ if (has_log) {
+ _log_file->bol();
+ // output a hint where this output is coming from:
+ _log_file->print_cr("<writer thread='" UINTX_FORMAT "'/>", writer_id);
+ }
+ _last_writer = writer_id;
+ }
+ _writer = writer_id;
+ return writer_id;
+}
+
+void defaultStream::release(intx holder) {
+ if (holder == NO_WRITER) {
+ // nothing to release: either a recursive lock, or we scribbled (too bad)
+ return;
+ }
+ if (_writer != holder) {
+ return; // already unlocked, perhaps via break_tty_lock_for_safepoint
+ }
+ _writer = NO_WRITER;
+ tty_lock->unlock();
+}
+
+
+// Yuck: jio_print does not accept char*/len.
+static void call_jio_print(const char* s, size_t len) {
+ char buffer[O_BUFLEN+100];
+ if (len > sizeof(buffer)-1) {
+ warning("increase O_BUFLEN in ostream.cpp -- output truncated");
+ len = sizeof(buffer)-1;
+ }
+ strncpy(buffer, s, len);
+ buffer[len] = '\0';
+ jio_print(buffer);
+}
+
+
+void defaultStream::write(const char* s, size_t len) {
+ intx thread_id = os::current_thread_id();
+ intx holder = hold(thread_id);
+
+ if (DisplayVMOutput &&
+ (_outer_xmlStream == NULL || !_outer_xmlStream->inside_attrs())) {
+ // print to output stream. It can be redirected by a vfprintf hook
+ if (s[len] == '\0') {
+ jio_print(s);
+ } else {
+ call_jio_print(s, len);
+ }
+ }
+
+ // print to log file
+ if (has_log_file()) {
+ int nl0 = _newlines;
+ xmlTextStream::write(s, len);
+ // flush the log file too, if there were any newlines
+ if (nl0 != _newlines){
+ flush();
+ }
+ } else {
+ update_position(s, len);
+ }
+
+ release(holder);
+}
+
+intx ttyLocker::hold_tty() {
+ if (defaultStream::instance == NULL) return defaultStream::NO_WRITER;
+ intx thread_id = os::current_thread_id();
+ return defaultStream::instance->hold(thread_id);
+}
+
+void ttyLocker::release_tty(intx holder) {
+ if (holder == defaultStream::NO_WRITER) return;
+ defaultStream::instance->release(holder);
+}
+
+bool ttyLocker::release_tty_if_locked() {
+ intx thread_id = os::current_thread_id();
+ if (defaultStream::instance->writer() == thread_id) {
+ // release the lock and return true so callers know if was
+ // previously held.
+ release_tty(thread_id);
+ return true;
+ }
+ return false;
+}
+
+void ttyLocker::break_tty_lock_for_safepoint(intx holder) {
+ if (defaultStream::instance != NULL &&
+ defaultStream::instance->writer() == holder) {
+ if (xtty != NULL) {
+ xtty->print_cr("<!-- safepoint while printing -->");
+ }
+ defaultStream::instance->release(holder);
+ }
+ // (else there was no lock to break)
+}
+
+void ostream_init() {
+ if (defaultStream::instance == NULL) {
+ defaultStream::instance = new(ResourceObj::C_HEAP, mtInternal) defaultStream();
+ tty = defaultStream::instance;
+
+ // We want to ensure that time stamps in GC logs consider time 0
+ // the time when the JVM is initialized, not the first time we ask
+ // for a time stamp. So, here, we explicitly update the time stamp
+ // of tty.
+ tty->time_stamp().update_to(1);
+ }
+}
+
+void ostream_init_log() {
+ // Note : this must be called AFTER ostream_init()
+
+#if INCLUDE_CDS
+ // For -XX:DumpLoadedClassList=<file> option
+ if (DumpLoadedClassList != NULL) {
+ const char* list_name = make_log_name(DumpLoadedClassList, NULL);
+ classlist_file = new(ResourceObj::C_HEAP, mtInternal)
+ fileStream(list_name);
+ FREE_C_HEAP_ARRAY(char, list_name);
+ }
+#endif
+
+ // If we haven't lazily initialized the logfile yet, do it now,
+ // to avoid the possibility of lazy initialization during a VM
+ // crash, which can affect the stability of the fatal error handler.
+ defaultStream::instance->has_log_file();
+}
+
+// ostream_exit() is called during normal VM exit to finish log files, flush
+// output and free resource.
+void ostream_exit() {
+ static bool ostream_exit_called = false;
+ if (ostream_exit_called) return;
+ ostream_exit_called = true;
+#if INCLUDE_CDS
+ if (classlist_file != NULL) {
+ delete classlist_file;
+ }
+#endif
+ {
+ // we temporaly disable PrintMallocFree here
+ // as otherwise it'll lead to using of almost deleted
+ // tty or defaultStream::instance in logging facility
+ // of HeapFree(), see 6391258
+ DEBUG_ONLY(FlagSetting fs(PrintMallocFree, false);)
+ if (tty != defaultStream::instance) {
+ delete tty;
+ }
+ if (defaultStream::instance != NULL) {
+ delete defaultStream::instance;
+ }
+ }
+ tty = NULL;
+ xtty = NULL;
+ defaultStream::instance = NULL;
+}
+
+// ostream_abort() is called by os::abort() when VM is about to die.
+void ostream_abort() {
+ // Here we can't delete tty, just flush its output
+ if (tty) tty->flush();
+
+ if (defaultStream::instance != NULL) {
+ static char buf[4096];
+ defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
+ }
+}
+
+bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
+ buffer_length = initial_size;
+ buffer = NEW_C_HEAP_ARRAY(char, buffer_length, mtInternal);
+ buffer_pos = 0;
+ buffer_fixed = false;
+ buffer_max = bufmax;
+}
+
+bufferedStream::bufferedStream(char* fixed_buffer, size_t fixed_buffer_size, size_t bufmax) : outputStream() {
+ buffer_length = fixed_buffer_size;
+ buffer = fixed_buffer;
+ buffer_pos = 0;
+ buffer_fixed = true;
+ buffer_max = bufmax;
+}
+
+void bufferedStream::write(const char* s, size_t len) {
+
+ if(buffer_pos + len > buffer_max) {
+ flush();
+ }
+
+ size_t end = buffer_pos + len;
+ if (end >= buffer_length) {
+ if (buffer_fixed) {
+ // if buffer cannot resize, silently truncate
+ len = buffer_length - buffer_pos - 1;
+ } else {
+ // For small overruns, double the buffer. For larger ones,
+ // increase to the requested size.
+ if (end < buffer_length * 2) {
+ end = buffer_length * 2;
+ }
+ buffer = REALLOC_C_HEAP_ARRAY(char, buffer, end, mtInternal);
+ buffer_length = end;
+ }
+ }
+ memcpy(buffer + buffer_pos, s, len);
+ buffer_pos += len;
+ update_position(s, len);
+}
+
+char* bufferedStream::as_string() {
+ char* copy = NEW_RESOURCE_ARRAY(char, buffer_pos+1);
+ strncpy(copy, buffer, buffer_pos);
+ copy[buffer_pos] = 0; // terminating null
+ return copy;
+}
+
+bufferedStream::~bufferedStream() {
+ if (!buffer_fixed) {
+ FREE_C_HEAP_ARRAY(char, buffer);
+ }
+}
+
+#ifndef PRODUCT
+
+#if defined(SOLARIS) || defined(LINUX) || defined(AIX) || defined(_ALLBSD_SOURCE)
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+// Network access
+networkStream::networkStream() : bufferedStream(1024*10, 1024*10) {
+
+ _socket = -1;
+
+ int result = os::socket(AF_INET, SOCK_STREAM, 0);
+ if (result <= 0) {
+ assert(false, "Socket could not be created!");
+ } else {
+ _socket = result;
+ }
+}
+
+int networkStream::read(char *buf, size_t len) {
+ return os::recv(_socket, buf, (int)len, 0);
+}
+
+void networkStream::flush() {
+ if (size() != 0) {
+ int result = os::raw_send(_socket, (char *)base(), size(), 0);
+ assert(result != -1, "connection error");
+ assert(result == (int)size(), "didn't send enough data");
+ }
+ reset();
+}
+
+networkStream::~networkStream() {
+ close();
+}
+
+void networkStream::close() {
+ if (_socket != -1) {
+ flush();
+ os::socket_close(_socket);
+ _socket = -1;
+ }
+}
+
+bool networkStream::connect(const char *ip, short port) {
+
+ struct sockaddr_in server;
+ server.sin_family = AF_INET;
+ server.sin_port = htons(port);
+
+ server.sin_addr.s_addr = inet_addr(ip);
+ if (server.sin_addr.s_addr == (uint32_t)-1) {
+ struct hostent* host = os::get_host_by_name((char*)ip);
+ if (host != NULL) {
+ memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
+ } else {
+ return false;
+ }
+ }
+
+
+ int result = os::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
+ return (result >= 0);
+}
+
+#endif