jdk8-mips64-public/hotspot: src/share/vm/utilities/ostream.cpp@2a1a77d3458f (annotated)

src/share/vm/utilities/ostream.cpp@2a1a77d3458f (annotated)

src/share/vm/utilities/ostream.cpp

Tue, 24 Jun 2008 16:00:14 -0700

author: never
date: Tue, 24 Jun 2008 16:00:14 -0700
changeset 657: 2a1a77d3458f
parent 537: f96100ac3d12
child 670: 9c2ecc2ffb12
child 786: fab5f738c515
permissions: -rw-r--r--

6718676: putback for 6604014 is incomplete
Reviewed-by: kvn, jrose

 /*
  * Copyright 1997-2007 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/_ostream.cpp.incl"
 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;
 }
 outputStream::outputStream(int width, bool has_time_stamps) {
   _width       = width;
   _position    = 0;
   _newlines    = 0;
   _precount    = 0;
   _indentation = 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) {
   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 if (vsnprintf(buffer, buflen, format, ap) >= 0) {
     result = buffer;
     result_len = strlen(result);
   } else {
     DEBUG_ONLY(warning("increase O_BUFLEN in ostream.hpp -- output truncated");)
     result = buffer;
     result_len = buflen - 1;
     buffer[result_len] = 0;
   }
   if (add_cr) {
     if (result != buffer) {
       strncpy(buffer, result, buflen);
       result = buffer;
     }
     buffer[result_len++] = '\n';
     buffer[result_len] = 0;
   }
   return result;
 }
 void outputStream::print(const char* format, ...) {
   char buffer[O_BUFLEN];
   va_list ap;
   va_start(ap, format);
   size_t len;
   const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, false, len);
   write(str, len);
   va_end(ap);
 }
 void outputStream::print_cr(const char* format, ...) {
   char buffer[O_BUFLEN];
   va_list ap;
   va_start(ap, format);
   size_t len;
   const char* str = do_vsnprintf(buffer, O_BUFLEN, format, ap, true, len);
   write(str, len);
   va_end(ap);
 }
 void outputStream::vprint(const char *format, va_list argptr) {
   char buffer[O_BUFLEN];
   size_t len;
   const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, false, len);
   write(str, len);
 }
 void outputStream::vprint_cr(const char* format, va_list argptr) {
   char buffer[O_BUFLEN];
   size_t len;
   const char* str = do_vsnprintf(buffer, O_BUFLEN, format, argptr, true, len);
   write(str, len);
 }
 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::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;
 }
 void outputStream::indent() {
   while (_position < _indentation) sp();
 }
 void outputStream::print_jlong(jlong value) {
   // N.B. Same as INT64_FORMAT
   print(os::jlong_format_specifier(), value);
 }
 void outputStream::print_julong(julong value) {
   // N.B. Same as UINT64_FORMAT
   print(os::julong_format_specifier(), value);
 }
 stringStream::stringStream(size_t initial_size) : outputStream() {
   buffer_length = initial_size;
   buffer        = NEW_RESOURCE_ARRAY(char, buffer_length);
   buffer_pos    = 0;
   buffer_fixed  = false;
 }
 // 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;
       buffer = NEW_RESOURCE_ARRAY(char, end);
       strncpy(buffer, oldbuf, buffer_pos);
       buffer_length = end;
     }
   }
   // invariant: buffer is always null-terminated
   guarantee(buffer_pos + write_len + 1 <= buffer_length, "stringStream oob");
   buffer[buffer_pos + write_len] = 0;
   strncpy(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;
 outputStream* gclog_or_tty;
 extern Mutex* tty_lock;
 fileStream::fileStream(const char* file_name) {
   _file = fopen(file_name, "w");
   _need_close = true;
 }
 void fileStream::write(const char* s, size_t len) {
   if (_file != NULL)  fwrite(s, 1, len, _file);
   update_position(s, len);
 }
 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) ::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 && !is_error_reported())  init();
   return _log_file != NULL;
 }
 static const char* make_log_name(const char* log_name, const char* force_directory, char* buf) {
   const char* basename = log_name;
   char file_sep = os::file_separator()[0];
   const char* cp;
   for (cp = log_name; *cp != '\0'; cp++) {
     if (*cp == '/' || *cp == file_sep) {
       basename = cp+1;
     }
   }
   const char* nametail = log_name;
   strcpy(buf, "");
   if (force_directory != NULL) {
     strcat(buf, force_directory);
     strcat(buf, os::file_separator());
     nametail = basename;       // completely skip directory prefix
   }
   const char* star = strchr(basename, '*');
   int star_pos = (star == NULL) ? -1 : (star - nametail);
   if (star_pos >= 0) {
     // convert foo*bar.log to foo123bar.log
     int buf_pos = (int) strlen(buf);
     strncpy(&buf[buf_pos], nametail, star_pos);
     sprintf(&buf[buf_pos + star_pos], "%u", os::current_process_id());
     nametail += star_pos + 1;  // skip prefix and star
   }
   strcat(buf, nametail);      // append rest of name, or all of name
   return buf;
 }
 void defaultStream::init_log() {
   // %%% Need a MutexLocker?
   const char* log_name = LogFile != NULL ? LogFile : "hotspot.log";
   char buf[O_BUFLEN*2];
   const char* try_name = make_log_name(log_name, NULL, buf);
   fileStream* file = new(ResourceObj::C_HEAP) fileStream(try_name);
   if (!file->is_open()) {
     // Try again to open the file.
     char warnbuf[O_BUFLEN*2];
     sprintf(warnbuf, "Warning:  Cannot open log file: %s\n", try_name);
     // Note:  This feature is for maintainer use only.  No need for L10N.
     jio_print(warnbuf);
     try_name = make_log_name("hs_pid*.log", os::get_temp_directory(), buf);
     sprintf(warnbuf, "Warning:  Forcing option -XX:LogFile=%s\n", try_name);
     jio_print(warnbuf);
     delete file;
     file = new(ResourceObj::C_HEAP) fileStream(try_name);
   }
   if (file->is_open()) {
     _log_file = file;
     xmlStream* xs = new(ResourceObj::C_HEAP) xmlStream(file);
     _outer_xmlStream = xs;
     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(), 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.
       for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
         xs->text()->print_cr("%s=%s", p->key(), 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!
   } else {
     delete(file);
     // and leave xtty as NULL
     LogVMOutput = false;
     DisplayVMOutput = true;
     LogCompilation = false;
   }
 }
 // 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 or call Thread::current() if TLS isn't initialized
       ThreadLocalStorage::thread() == NULL ||
       // developer hook
       !SerializeVMOutput ||
       // VM already unhealthy
       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='"INTX_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);
 }
 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) 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() {
   // For -Xloggc:<file> option - called in runtime/thread.cpp
   // Note : this must be called AFTER ostream_init()
   gclog_or_tty = tty; // default to tty
   if (Arguments::gc_log_filename() != NULL) {
     fileStream * gclog = new(ResourceObj::C_HEAP)
                            fileStream(Arguments::gc_log_filename());
     if (gclog->is_open()) {
       // now we update the time stamp of the GC log to be synced up
       // with tty.
       gclog->time_stamp().update_to(tty->time_stamp().ticks());
       gclog_or_tty = gclog;
     }
   }
   // 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 (gclog_or_tty != tty) {
       delete gclog_or_tty;
   }
   {
       // 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;
   gclog_or_tty = 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 gclog_or_tty and tty, just flush their output
   if (gclog_or_tty) gclog_or_tty->flush();
   if (tty) tty->flush();
   if (defaultStream::instance != NULL) {
     static char buf[4096];
     defaultStream::instance->finish_log_on_error(buf, sizeof(buf));
   }
 }
 staticBufferStream::staticBufferStream(char* buffer, size_t buflen,
                                        outputStream *outer_stream) {
   _buffer = buffer;
   _buflen = buflen;
   _outer_stream = outer_stream;
 }
 void staticBufferStream::write(const char* c, size_t len) {
   _outer_stream->print_raw(c, (int)len);
 }
 void staticBufferStream::flush() {
   _outer_stream->flush();
 }
 void staticBufferStream::print(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   size_t len;
   const char* str = do_vsnprintf(_buffer, _buflen, format, ap, false, len);
   write(str, len);
   va_end(ap);
 }
 void staticBufferStream::print_cr(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   size_t len;
   const char* str = do_vsnprintf(_buffer, _buflen, format, ap, true, len);
   write(str, len);
   va_end(ap);
 }
 void staticBufferStream::vprint(const char *format, va_list argptr) {
   size_t len;
   const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, false, len);
   write(str, len);
 }
 void staticBufferStream::vprint_cr(const char* format, va_list argptr) {
   size_t len;
   const char* str = do_vsnprintf(_buffer, _buflen, format, argptr, true, len);
   write(str, len);
 }
 bufferedStream::bufferedStream(size_t initial_size, size_t bufmax) : outputStream() {
   buffer_length = initial_size;
   buffer        = NEW_C_HEAP_ARRAY(char, buffer_length);
   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);
       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)
 #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;
   hpi::initialize_socket_library();
   int result = hpi::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 hpi::recv(_socket, buf, (int)len, 0);
 }
 void networkStream::flush() {
   if (size() != 0) {
     int result = hpi::raw_send(_socket, (char *)base(), (int)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();
     hpi::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) {
 #ifdef _WINDOWS
     struct hostent* host = hpi::get_host_by_name((char*)ip);
 #else
     struct hostent* host = gethostbyname(ip);
 #endif
     if (host != NULL) {
       memcpy(&server.sin_addr, host->h_addr_list[0], host->h_length);
     } else {
       return false;
     }
   }
   int result = hpi::connect(_socket, (struct sockaddr*)&server, sizeof(struct sockaddr_in));
   return (result >= 0);
 }
 #endif

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/utilities/ostream.cpp@2a1a77d3458f (annotated)

src/share/vm/utilities/ostream.cpp