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/*
* pmutils.h
*
* T38FAX Pseudo Modem
*
* Copyright (c) 2001-2008 Vyacheslav Frolov
*
* Open H323 Project
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Open H323 Library.
*
* The Initial Developer of the Original Code is Vyacheslav Frolov
*
* Contributor(s): Equivalence Pty ltd
*
* $Log: pmutils.h,v $
* Revision 1.18 2008/09/10 11:15:00 frolov
* Ported to OPAL SVN trunk
*
* Revision 1.17 2006/12/11 10:27:35 vfrolov
* Disabled renaming thread if no PTRACING
*
* Revision 1.16 2005/03/05 15:39:12 vfrolov
* Ignore COUT_TRACE if not PTRACING
*
* Revision 1.15 2005/02/04 10:18:49 vfrolov
* Fixed warnings for No Trace build
*
* Revision 1.14 2005/02/03 11:32:12 vfrolov
* Fixed MSVC compile warnings
*
* Revision 1.13 2004/10/20 14:15:09 vfrolov
* Added reset of signal counter to WaitDataReady()
*
* Revision 1.12 2004/07/07 07:53:58 vfrolov
* Moved ptlib.h including to *.cxx for precompiling
* Fixed compiler warning
*
* Revision 1.11 2004/03/09 17:23:19 vfrolov
* Added PROCESS_PER_THREAD ifdef
*
* Revision 1.10 2003/12/04 13:22:35 vfrolov
* Removed ambiguous isEof()
* Improved memory usage in DataStream
* Fixed myPTRACE
*
* Revision 1.9 2003/01/08 16:37:29 vfrolov
* Changed class DataStream:
* members moved to private section and added isEof()
* added threshold and isFull()
*
* Revision 1.8 2002/12/30 12:49:39 vfrolov
* Added tracing thread's CPU usage (Linux only)
*
* Revision 1.7 2002/12/20 10:13:01 vfrolov
* Implemented tracing with PID of thread (for LinuxThreads)
* or ID of thread (for other POSIX Threads)
*
* Revision 1.6 2002/04/27 10:12:21 vfrolov
* If defined MYPTRACE_LEVEL=N then myPTRACE() will output the trace with level N
*
* Revision 1.5 2002/03/07 07:30:44 vfrolov
* Fixed endless recursive call SignalChildStop(). Possible there is
* a bug in gcc version 2.95.4 20010902 (Debian prerelease).
* Markus Storm reported the promlem.
*
* Revision 1.4 2002/03/01 08:17:28 vfrolov
* Added Copyright header
* Removed virtual modifiers
*
* Revision 1.3 2002/02/11 08:35:12 vfrolov
* myPTRACE() outputs trace to cout only if defined COUT_TRACE
*
* Revision 1.2 2002/01/10 06:10:03 craigs
* Added MPL header
*
* Revision 1.1 2002/01/01 23:06:54 craigs
* Initial version
*
*/
#ifndef _PMUTILS_H
#define _PMUTILS_H
///////////////////////////////////////////////////////////////
class ModemThread : public PThread
{
PCLASSINFO(ModemThread, PThread);
public:
/**@name Construction */
//@{
ModemThread();
//@}
/**@name Operations */
//@{
void SignalDataReady() { dataReadySyncPoint.Signal(); }
void SignalChildStop();
virtual void SignalStop();
//@}
protected:
virtual void Main() = 0;
void WaitDataReady();
volatile PBoolean stop; // *this was requested to stop
volatile PBoolean childstop; // there is a child that was requested to stop
PSyncPoint dataReadySyncPoint;
};
///////////////////////////////////////////////////////////////
class ModemThreadChild : public ModemThread
{
PCLASSINFO(ModemThreadChild, ModemThread);
public:
/**@name Construction */
//@{
ModemThreadChild(ModemThread &_parent);
//@}
/**@name Operations */
//@{
virtual void SignalStop();
//@}
protected:
ModemThread &parent;
};
///////////////////////////////////////////////////////////////
PQUEUE(_PBYTEArrayQ, PBYTEArray);
class PBYTEArrayQ : public _PBYTEArrayQ
{
PCLASSINFO(PBYTEArrayQ, _PBYTEArrayQ);
public:
PBYTEArrayQ() : count(0) {}
~PBYTEArrayQ() { Clean(); }
virtual void Enqueue(PBYTEArray *buf) {
PWaitAndSignal mutexWait(Mutex);
count += buf->GetSize();
_PBYTEArrayQ::Enqueue(buf);
}
virtual PBYTEArray *Dequeue() {
PWaitAndSignal mutexWait(Mutex);
PBYTEArray *buf = _PBYTEArrayQ::Dequeue();
if( buf ) count -= buf->GetSize();
return buf;
}
PINDEX GetCount() const { return count; }
void Clean() {
PBYTEArray *buf;
while( (buf = Dequeue()) != NULL ) {
delete buf;
}
}
protected:
PINDEX count;
PMutex Mutex;
};
///////////////////////////////////////////////////////////////
class ChunkStream : public PObject
{
PCLASSINFO(ChunkStream, PObject);
public:
ChunkStream() : first(0), last(0) {}
int write(const void *pBuf, PINDEX count);
int read(void *pBuf, PINDEX count);
private:
BYTE data[256];
PINDEX first;
PINDEX last;
};
PQUEUE(ChunkStreamQ, ChunkStream);
///////////////////////////////////////////////////////////////
class DataStream : public PObject
{
PCLASSINFO(DataStream, PObject);
public:
DataStream(PINDEX _threshold = 0)
: firstBuf(NULL), lastBuf(NULL), busy(0),
threshold(_threshold), eof(FALSE), diag(0) {}
~DataStream() { DataStream::Clean(); }
int PutData(const void *pBuf, PINDEX count);
int GetData(void *pBuf, PINDEX count);
void PutEof() { eof = TRUE; }
int GetDiag() const { return diag; }
DataStream &SetDiag(int _diag) { diag = _diag; return *this; }
PBoolean isFull() const { return threshold && threshold < busy; }
virtual void Clean();
private:
ChunkStream *firstBuf;
ChunkStreamQ bufQ;
ChunkStream *lastBuf; // if not NULL then it should be in bufQ or firstBuf
PINDEX busy;
PINDEX threshold;
PBoolean eof;
int diag;
};
///////////////////////////////////////////////////////////////
PQUEUE(_DataStreamQ, DataStream);
class DataStreamQ : public _DataStreamQ
{
PCLASSINFO(DataStreamQ, _DataStreamQ);
public:
DataStreamQ() {}
~DataStreamQ() { Clean(); }
virtual void Enqueue(DataStream *buf) {
PWaitAndSignal mutexWait(Mutex);
_DataStreamQ::Enqueue(buf);
}
virtual DataStream *Dequeue() {
PWaitAndSignal mutexWait(Mutex);
return _DataStreamQ::Dequeue();
}
void Clean() {
DataStream *buf;
while( (buf = Dequeue()) != NULL ) {
delete buf;
}
}
protected:
PMutex Mutex;
};
///////////////////////////////////////////////////////////////
#ifdef _MSC_VER
// warning C4127: conditional expression is constant
#pragma warning(disable:4127)
#endif // _MSC_VER
#if !PTRACING && defined COUT_TRACE
#undef COUT_TRACE
#endif
#ifdef COUT_TRACE
#define _myPTRACE(level, args) do { \
PTRACE(level, args); \
cout << PThread::Current()->GetThreadName() << ": " << args << endl; \
} while(0)
#define myCanTrace(level) TRUE
#define myPTRACE_PARAM(param) param
#else
#define _myPTRACE(level, args) do { PTRACE(level, args); } while(0)
#define myCanTrace(level) PTrace::CanTrace(level)
#define myPTRACE_PARAM(param) PTRACE_PARAM(param)
#endif // COUT_TRACE
#ifdef MYPTRACE_LEVEL
#define myPTRACE(level, args) _myPTRACE(MYPTRACE_LEVEL, args)
#else
#define myPTRACE(level, args) _myPTRACE(level, args)
#endif // MYPTRACE_LEVEL
#define PRTHEX(data) " {\n" << setprecision(2) << hex << setfill('0') << data << dec << setfill(' ') << " }"
///////////////////////////////////////////////////////////////
#if PTRACING
extern void RenameCurrentThread(const PString &newname);
#else
#define RenameCurrentThread(newname)
#endif /* PTRACING */
#ifdef PROCESS_PER_THREAD
extern const PString GetThreadTimes(const char *head = "", const char *tail = "");
#else
inline const PString GetThreadTimes(const char *head = "", const char *tail = "");
inline const PString GetThreadTimes(const char *, const char *)
{
return "";
}
#endif
///////////////////////////////////////////////////////////////
#endif // _PMUTILS_H
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