139 if (!configure_rotation(options)) {
140 return false;
141 }
142 _stream = fopen(_file_name, FileOpenMode);
143 if (_stream == NULL) {
144 log_error(logging)("Could not open log file '%s' (%s).\n", _file_name, strerror(errno));
145 return false;
146 }
147 return true;
148 }
149
150 int LogFileOutput::write(const LogDecorations& decorations, const char* msg) {
151 if (_stream == NULL) {
152 // An error has occurred with this output, avoid writing to it.
153 return 0;
154 }
155 int written = LogFileStreamOutput::write(decorations, msg);
156 _current_size += written;
157
158 if (should_rotate()) {
159 MutexLockerEx ml(&_rotation_lock, true /* no safepoint check */);
160 if (should_rotate()) {
161 rotate();
162 }
163 }
164
165 return written;
166 }
167
168 void LogFileOutput::archive() {
169 assert(_archive_name != NULL && _archive_name_len > 0, "Rotation must be configured before using this function.");
170 int ret = jio_snprintf(_archive_name, _archive_name_len, "%s.%0*u",
171 _file_name, _file_count_max_digits, _current_file);
172 assert(ret >= 0, "Buffer should always be large enough");
173
174 // Attempt to remove possibly existing archived log file before we rename.
175 // Don't care if it fails, we really only care about the rename that follows.
176 remove(_archive_name);
177
178 // Rename the file from ex hotspot.log to hotspot.log.2
179 if (rename(_file_name, _archive_name) == -1) {
180 jio_fprintf(defaultStream::error_stream(), "Could not rename log file '%s' to '%s' (%s).\n",
181 _file_name, _archive_name, strerror(errno));
182 }
183 }
184
185 void LogFileOutput::rotate() {
186 // Archive the current log file
187 archive();
188
189 // Open the active log file using the same stream as before
190 _stream = freopen(_file_name, FileOpenMode, _stream);
191 if (_stream == NULL) {
192 jio_fprintf(defaultStream::error_stream(), "Could not reopen file '%s' during log rotation (%s).\n",
193 _file_name, strerror(errno));
194 return;
195 }
196
197 // Reset accumulated size, increase current file counter, and check for file count wrap-around.
198 _current_size = 0;
199 _current_file = (_current_file >= _file_count ? 1 : _current_file + 1);
200 }
201
202 char* LogFileOutput::make_file_name(const char* file_name,
203 const char* pid_string,
204 const char* timestamp_string) {
205 char* result = NULL;
|
139 if (!configure_rotation(options)) {
140 return false;
141 }
142 _stream = fopen(_file_name, FileOpenMode);
143 if (_stream == NULL) {
144 log_error(logging)("Could not open log file '%s' (%s).\n", _file_name, strerror(errno));
145 return false;
146 }
147 return true;
148 }
149
150 int LogFileOutput::write(const LogDecorations& decorations, const char* msg) {
151 if (_stream == NULL) {
152 // An error has occurred with this output, avoid writing to it.
153 return 0;
154 }
155 int written = LogFileStreamOutput::write(decorations, msg);
156 _current_size += written;
157
158 if (should_rotate()) {
159 rotate();
160 }
161
162 return written;
163 }
164
165 void LogFileOutput::archive() {
166 assert(_archive_name != NULL && _archive_name_len > 0, "Rotation must be configured before using this function.");
167 int ret = jio_snprintf(_archive_name, _archive_name_len, "%s.%0*u",
168 _file_name, _file_count_max_digits, _current_file);
169 assert(ret >= 0, "Buffer should always be large enough");
170
171 // Attempt to remove possibly existing archived log file before we rename.
172 // Don't care if it fails, we really only care about the rename that follows.
173 remove(_archive_name);
174
175 // Rename the file from ex hotspot.log to hotspot.log.2
176 if (rename(_file_name, _archive_name) == -1) {
177 jio_fprintf(defaultStream::error_stream(), "Could not rename log file '%s' to '%s' (%s).\n",
178 _file_name, _archive_name, strerror(errno));
179 }
180 }
181
182 void LogFileOutput::rotate() {
183 MutexLockerEx ml(&_rotation_lock, true /* no safepoint check */);
184
185 // Archive the current log file
186 archive();
187
188 // Open the active log file using the same stream as before
189 _stream = freopen(_file_name, FileOpenMode, _stream);
190 if (_stream == NULL) {
191 jio_fprintf(defaultStream::error_stream(), "Could not reopen file '%s' during log rotation (%s).\n",
192 _file_name, strerror(errno));
193 return;
194 }
195
196 // Reset accumulated size, increase current file counter, and check for file count wrap-around.
197 _current_size = 0;
198 _current_file = (_current_file >= _file_count ? 1 : _current_file + 1);
199 }
200
201 char* LogFileOutput::make_file_name(const char* file_name,
202 const char* pid_string,
203 const char* timestamp_string) {
204 char* result = NULL;
|