4 #ifndef DUNE_DEBUGSTREAM_HH 5 #define DUNE_DEBUGSTREAM_HH 127 template <DebugLevel current, DebugLevel threshold>
129 static const bool value = (current >= threshold);
139 template <DebugLevel current, DebugLevel mask>
141 enum {
value = ((current & mask)!=0) };
186 template <DebugLevel thislevel = 1,
187 DebugLevel dlevel = 1,
188 DebugLevel alevel = 1,
203 _active = activator<thislevel,alevel>::value;
218 std::ostream& fallback = std::cerr)
225 _active = activator<thislevel,alevel>::value;
245 tiedstate->_tied_streams--;
248 if (_tied_streams != 0)
250 std::cerr <<
"DebugStream destructor is called while other streams are still tied to it. Terminating!" << std::endl;
256 while (current != 0) {
258 current = current->
next;
267 if (activator<thislevel, dlevel>::value) {
270 current->out << data;
272 if (_active && tiedstate->_active)
289 if (activator<thislevel, dlevel>::value) {
292 current->out << data;
294 if (_active && tiedstate->_active)
304 if (activator<thislevel, dlevel>::value) {
309 if (_active && tiedstate->_active)
310 f(tiedstate->current->out);
319 if (activator<thislevel, dlevel>::value) {
322 current->out.
flush();
324 if (_active && tiedstate->_active)
335 if (activator<thislevel,alevel>::value) {
336 _actstack.push(_active);
340 _actstack.push(
false);
348 if (_actstack.empty())
351 _active = _actstack.top();
362 return activator<thislevel, dlevel>::value && _active;
374 newcurr->
next = current;
382 if (current->next == 0)
388 current = current->
next;
415 tiedstate->_tied_streams--;
428 std::stack<bool> _actstack;
void pop()
restore previously set activation flag
Definition: debugstream.hh:347
void tie(DebugStreamState &to)
Tie a stream to this one.
Definition: debugstream.hh:395
DebugStream & operator<<(const int data)
explicit specialization so that enums can be printed
Definition: debugstream.hh:287
StreamWrap(std::ostream &_out)
Definition: debugstream.hh:150
unsigned int DebugLevel
Type for debug levels.
Definition: debugstream.hh:116
bool _tied
are we tied to another DebugStream?
Definition: debugstream.hh:166
StreamWrap * next
Definition: debugstream.hh:152
DebugStream & flush()
pass on flush to underlying output stream
Definition: debugstream.hh:318
~DebugStream()
Destroy stream.
Definition: debugstream.hh:241
void untie()
Untie stream.
Definition: debugstream.hh:411
Definition: debugstream.hh:148
Greater or equal template test.
Definition: debugstream.hh:128
static const bool value
Definition: debugstream.hh:129
A few common exception classes.
Dune namespace.
Definition: alignedallocator.hh:9
bool _active
flag to switch output during runtime
Definition: debugstream.hh:163
Generic class to implement debug output streams.
Definition: debugstream.hh:190
Default exception class for I/O errors.
Definition: exceptions.hh:229
DebugStream(DebugStreamState &master, std::ostream &fallback=std::cerr)
Create a DebugStream and directly tie to another DebugStream.
Definition: debugstream.hh:217
bool active() const
reports if this stream will produce output
Definition: debugstream.hh:361
StreamWrap * current
current output stream and link to possibly pushed old output streams
Definition: debugstream.hh:160
DebugStream & operator<<(std::ostream &(*f)(std::ostream &))
pass on manipulators to underlying output stream
Definition: debugstream.hh:303
standard exception for the debugstream
Definition: debugstream.hh:146
DebugStream(std::ostream &out=std::cerr)
Create a DebugStream and set initial output stream.
Definition: debugstream.hh:197
Intermediate class to implement tie-operation of DebugStream.
Definition: debugstream.hh:156
activate if current and mask have common bits switched on.
Definition: debugstream.hh:140
#define DUNE_THROW(E, m)
Definition: exceptions.hh:216
DebugStream & operator<<(const T data)
Generic types are passed on to current output stream.
Definition: debugstream.hh:265
void push(bool b)
set activation flag and store old value
Definition: debugstream.hh:333
void attach(std::ostream &stream)
set output to a different stream.
Definition: debugstream.hh:369
std::ostream & out
Definition: debugstream.hh:151
unsigned int _tied_streams
how many streams are tied to this state
Definition: debugstream.hh:169
void detach()
detach current output stream and restore to previous stream
Definition: debugstream.hh:381