osutils.cxx

pwlib源码库

 * Revision 1.94  1998/05/25 09:05:56  robertj
 * Fixed close of channels on destruction.
 *
 * Revision 1.93  1998/04/07 13:33:33  robertj
 * Changed startup code to support PApplication class.
 *
 * Revision 1.92  1998/03/29 06:16:45  robertj
 * Rearranged initialisation sequence so PProcess descendent constructors can do "things".
 *
 * Revision 1.91  1998/03/20 03:18:17  robertj
 * Added special classes for specific sepahores, PMutex and PSyncPoint.
 *
 * Revision 1.90  1998/02/05 13:33:12  robertj
 * Fixed close of non-autodelete PIndirectChannels
 *
 * Revision 1.89  1998/02/03 06:19:55  robertj
 * Added new function to read a block with minimum number of bytes.
 *
 * Revision 1.88  1998/01/26 00:47:13  robertj
 * Added functions to get/set 64bit integers from a PConfig.
 *
 * Revision 1.87  1998/01/04 07:22:16  robertj
 * Fixed bug in thread deletion not removing it from active thread list.
 *
 * Revision 1.86  1997/10/10 10:41:22  robertj
 * Fixed problem with cooperative threading and Sleep() function returning immediately.
 *
 * Revision 1.85  1997/08/28 12:49:00  robertj
 * Fixed possible assert on exit of application.
 *
 * Revision 1.84  1997/07/08 13:08:12  robertj
 * DLL support.
 *
 * Revision 1.83  1997/04/27 05:50:15  robertj
 * DLL support.
 *
 * Revision 1.82  1997/02/09 04:05:56  robertj
 * Changed PProcess::Current() from pointer to reference.
 *
 * Revision 1.81  1997/02/05 11:51:42  robertj
 * Changed current process function to return reference and validate objects descendancy.
 *
 * Revision 1.80  1996/12/21 05:54:38  robertj
 * Fixed possible deadlock in timers.
 *
 * Revision 1.79  1996/12/05 11:44:22  craigs
 * Made indirect close from different thread less likely to have
 * race condition
 *
 * Revision 1.78  1996/11/30 12:08:42  robertj
 * Removed extraneous compiler warning.
 *
 * Revision 1.77  1996/11/10 21:05:43  robertj
 * Fixed bug of missing flush in close of indirect channel.
 *
 * Revision 1.76  1996/10/08 13:07:07  robertj
 * Fixed bug in indirect channel being reopened double deleting subchannel.
 *
 * Revision 1.75  1996/09/14 13:09:37  robertj
 * Major upgrade:
 *   rearranged sockets to help support IPX.
 *   added indirect channel class and moved all protocols to descend from it,
 *   separating the protocol from the low level byte transport.
 *
 * Revision 1.74  1996/08/11 06:53:04  robertj
 * Fixed bug in Sleep() function (nonpreemptive version).
 *
 * Revision 1.73  1996/07/27 04:12:09  robertj
 * Fixed bug in timer thread going into busy loop instead of blocking.
 *
 * Revision 1.72  1996/07/15 10:36:12  robertj
 * Fixed bug in timer on startup, getting LARGE times timing out prematurely.
 *
 * Revision 1.71  1996/06/28 13:22:43  robertj
 * Rewrite of timers to make OnTimeout more thread safe.
 *
 * Revision 1.70  1996/06/13 13:31:05  robertj
 * Rewrite of auto-delete threads, fixes Windows95 total crash.
 *
 * Revision 1.69  1996/06/03 10:01:31  robertj
 * Fixed GNU support bug fix for the fix.
 *
 * Revision 1.68  1996/06/01 05:03:37  robertj
 * Fixed GNU compiler having difficulty with PTimeInterval *this.
 *
 * Revision 1.67  1996/05/26 03:46:56  robertj
 * Compatibility to GNU 2.7.x
 *
 * Revision 1.66  1996/05/23 23:05:07  robertj
 * Fixed process filename on MSOS platforms.
 *
 * Revision 1.65  1996/05/23 09:56:57  robertj
 * Added mutex to timer list.
 *
 * Revision 1.64  1996/05/18 09:18:33  robertj
 * Added mutex to timer list.
 *
 * Revision 1.63  1996/05/09 12:19:00  robertj
 * Resolved C++ problems with 64 bit PTimeInterval for Mac platform.
 *
 * Revision 1.62  1996/04/14 02:53:34  robertj
 * Split serial and pipe channel into separate compilation units for Linux executable size reduction.
 *
 * Revision 1.61  1996/04/10 12:51:29  robertj
 * Fixed startup race condtion in timer thread.
 *
 * Revision 1.60  1996/04/09 03:32:58  robertj
 * Fixed bug in config GetTime() cannot use PTime(0) in western hemisphere.
 *
 * Revision 1.59  1996/04/02 11:29:19  robertj
 * Eliminated printing of patch level in version when there isn't one.
 *
 * Revision 1.58  1996/03/31 09:06:14  robertj
 * Fixed WriteString() so works with sockets.
 * Changed PPipeSokcet argument string list to array.
 *
 * Revision 1.57  1996/03/16 04:51:50  robertj
 * Fixed yet another bug in the scheduler.
 *
 * Revision 1.56  1996/03/12 11:30:50  robertj
 * Moved PProcess destructor to platform dependent code.
 *
 * Revision 1.55  1996/03/05 14:05:51  robertj
 * Fixed some more bugs in scheduling.
 *
 * Revision 1.54  1996/03/04 12:22:46  robertj
 * Fixed threading for unix stack check and loop list start point.
 *
 * Revision 1.53  1996/03/03 07:39:51  robertj
 * Fixed bug in thread scheduler for correct termination of "current" thread.
 *
 * Revision 1.52  1996/03/02 03:24:48  robertj
 * Changed timer thread to update timers periodically, this allows timers to be
 *    views dynamically by other threads.
 * Added automatic deletion of thread object instances on thread completion.
 *
 * Revision 1.51  1996/02/25 11:15:27  robertj
 * Added platform dependent Construct function to PProcess.
 *
 * Revision 1.50  1996/02/25 03:09:46  robertj
 * Added consts to all GetXxxx functions in PConfig.
 *
 * Revision 1.49  1996/02/15 14:44:09  robertj
 * Used string constructor for PTime, more "efficient".
 *
 * Revision 1.48  1996/02/13 12:59:30  robertj
 * Changed GetTimeZone() so can specify standard/daylight time.
 * Split PTime into separate module after major change to ReadFrom().
 *
 * Revision 1.47  1996/02/08 12:26:55  robertj
 * Changed time for full support of time zones.
 *
 * Revision 1.46  1996/02/03 11:06:49  robertj
 * Added string constructor for times, parses date/time from string.
 *
 * Revision 1.45  1996/01/28 14:09:39  robertj
 * Fixed bug in time reading function for dates before 1980.
 * Fixed bug in time reading, was out by one month.
 * Added time functions to PConfig.
 *
 * Revision 1.44  1996/01/28 02:52:04  robertj
 * Added assert into all Compare functions to assure comparison between compatible objects.
 *
 * Revision 1.43  1996/01/23 13:16:30  robertj
 * Mac Metrowerks compiler support.
 * Fixed timers so background thread not created if a windows app.
 *
 * Revision 1.42  1996/01/03 23:15:39  robertj
 * Fixed some PTime bugs.
 *
 * Revision 1.41  1996/01/03 11:09:35  robertj
 * Added Universal Time and Time Zones to PTime class.
 *
 * Revision 1.39  1995/12/23 03:40:40  robertj
 * Changed version number system
 *
 * Revision 1.38  1995/12/10 11:41:12  robertj
 * Added extra user information to processes and applications.
 * Implemented timer support in text only applications with platform threads.
 * Fixed bug in non-platform threads and semaphore timeouts.
 *
 * Revision 1.37  1995/11/21 11:50:57  robertj
 * Added timeout on semaphore wait.
 *
 * Revision 1.36  1995/11/09 12:22:58  robertj
 * Fixed bug in stream when reading an FF (get EOF).
 *
 * Revision 1.35  1995/07/31 12:09:25  robertj
 * Added semaphore class.
 * Removed PContainer from PChannel ancestor.
 *
 * Revision 1.34  1995/06/04 12:41:08  robertj
 * Fixed bug in accessing argument strings with no argument.
 *
 * Revision 1.33  1995/04/25 11:30:06  robertj
 * Fixed Borland compiler warnings.
 *
 * Revision 1.32  1995/04/22 00:51:00  robertj
 * Changed file path strings to use PFilePath object.
 * Changed semantics of Rename().
 *
 * Revision 1.31  1995/04/02 09:27:31  robertj
 * Added "balloon" help.
 *
 * Revision 1.30  1995/04/01 08:30:58  robertj
 * Fixed bug in timeout code of timers.
 *
 * Revision 1.29  1995/01/27 11:15:17  robertj
 * Removed enum to int warning from GCC.
 *
 * Revision 1.28  1995/01/18  09:02:43  robertj
 * Added notifier to timer.
 *
 * Revision 1.27  1995/01/15  04:57:15  robertj
 * Implemented PTime::ReadFrom.
 * Fixed flush of iostream at end of file.
 *
 * Revision 1.26  1995/01/11  09:45:14  robertj
 * Documentation and normalisation.
 *
 * Revision 1.25  1995/01/10  11:44:15  robertj
 * Removed PString parameter in stdarg function for GNU C++ compatibility.
 *
 * Revision 1.24  1995/01/09  12:31:51  robertj
 * Removed unnecesary return value from I/O functions.
 *
 * Revision 1.23  1994/12/12  10:09:24  robertj
 * Fixed flotain point configuration variable format.
 *
 * Revision 1.22  1994/11/28  12:38:23  robertj
 * Async write functions should have const pointer.
 *
 * Revision 1.21  1994/10/30  11:36:58  robertj
 * Fixed missing space in tine format string.
 *
 * Revision 1.20  1994/10/23  03:46:41  robertj
 * Shortened OS error assert.
 *
 * Revision 1.19  1994/09/25  10:51:04  robertj
 * Fixed error conversion code to use common function.
 * Added pipe channel.
 *
 * Revision 1.18  1994/08/21  23:43:02  robertj
 * Moved meta-string transmitter from PModem to PChannel.
 * Added SuspendBlock state to cooperative multi-threading to fix logic fault.
 * Added "force" option to Remove/Rename etc to override write protection.
 * Added common entry point to convert OS error to PChannel error.
 *
 * Revision 1.17  1994/08/04  12:57:10  robertj
 * Changed CheckBlock() to better name.
 * Moved timer porcessing so is done at every Yield().
 *
 * Revision 1.16  1994/08/01  03:39:42  robertj
 * Fixed temporary variable problem with GNU C++
 *
 * Revision 1.15  1994/07/27  05:58:07  robertj
 * Synchronisation.
 *
 * Revision 1.14  1994/07/25  03:39:22  robertj
 * Fixed problems with C++ temporary variables.
 *
 * Revision 1.13  1994/07/21  12:33:49  robertj
 * Moved cooperative threads to common.
 *
 * Revision 1.12  1994/07/17  10:46:06  robertj
 * Fixed timer bug.
 * Moved handle from file to channel.
 * Changed args to use container classes.
 *
 * Revision 1.11  1994/07/02  03:03:49  robertj
 * Time interval and timer redesign.
 *
 * Revision 1.10  1994/06/25  11:55:15  robertj
 * Unix version synchronisation.
 *
 * Revision 1.9  1994/04/20  12:17:44  robertj
 * assert changes
 *
 * Revision 1.8  1994/04/01  14:05:06  robertj
 * Text file streams
 *
 * Revision 1.7  1994/03/07  07:47:00  robertj
 * Major upgrade
 *
 * Revision 1.6  1994/01/03  04:42:23  robertj
 * Mass changes to common container classes and interactors etc etc etc.
 *
 * Revision 1.5  1993/12/31  06:53:02  robertj
 * Made inlines optional for debugging purposes.
 *
 * Revision 1.4  1993/12/29  04:41:26  robertj
 * Mac port.
 *
 * Revision 1.3  1993/11/20  17:26:28  robertj
 * Removed separate osutil.h
 *
 * Revision 1.2  1993/08/31  03:38:02  robertj
 * G++ needs explicit casts for char * / void * interchange.
 *
 * Revision 1.1  1993/08/27  18:17:47  robertj
 * Initial revision
 *
 */

#include <ptlib.h>
#include <vector>

#include <ctype.h>

#ifdef __MACOSX__
namespace PWLibStupidOSXHacks {
	extern int loadShmVideoStuff;
	extern int loadCoreAudioStuff;
	extern int loadFakeVideoStuff;
};
#endif

class PSimpleThread : public PThread
{
    PCLASSINFO(PSimpleThread, PThread);
  public:
    PSimpleThread(
      const PNotifier & notifier,
      INT parameter,
      AutoDeleteFlag deletion,
      Priority priorityLevel,
      const PString & threadName,
      PINDEX stackSize
    );
    void Main();
  protected:
    PNotifier callback;
    INT parameter;
};

static PMutex * PTraceMutex = NULL;

#ifndef __NUCLEUS_PLUS__
static ostream * PErrorStream = &cerr;
#else
static ostream * PErrorStream = NULL;
#endif

ostream & PGetErrorStream()
{
  return *PErrorStream;
}


void PSetErrorStream(ostream * s)
{
#ifndef __NUCLEUS_PLUS__
  PErrorStream = s != NULL ? s : &cerr;
#else
  PErrorStream = s;
#endif
}

//////////////////////////////////////////////////////////////////////////////

#if !defined(__NUCLEUS_PLUS__) 
static ostream * PTraceStream = &cerr;
#else

#ifdef __NUCLEUS_PLUS__ 
static ostream * PTraceStream = 0L;
#endif

#endif

static unsigned PTraceOptions = PTrace::FileAndLine;
static unsigned PTraceLevelThreshold = 0;
static PTimeInterval ApplicationStartTick = PTimer::Tick();
unsigned PTraceCurrentLevel;
static const char * PTrace_Filename = NULL;
static int PTrace_lastDayOfYear = 0;

void PTrace::SetStream(ostream * s)
{
#ifndef __NUCLEUS_PLUS__
  if (s == NULL)
    s = &cerr;
#endif

  if (PTraceMutex == NULL)
    PTraceStream = s;
  else {
    PWaitAndSignal m(*PTraceMutex);
    PTraceStream = s;
  }
}

static void OpenTraceFile()
{
  PFilePath fn(PTrace_Filename);

  if ((PTraceOptions & PTrace::RotateDaily) != 0)
    fn = PFilePath(fn.GetDirectory() + (fn.GetTitle() + PTime((PTraceOptions&PTrace::GMTTime) ? PTime::GMT : PTime::Local).AsString("yyyy_MM_dd") + fn.GetType()));

  PTextFile * traceOutput;
  if (PTraceOptions & PTrace::AppendToFile) {
    traceOutput = new PTextFile(fn, PFile::ReadWrite);
    traceOutput->SetPosition(0, PFile::End);
  } else 
    traceOutput = new PTextFile(fn, PFile::WriteOnly);

  if (traceOutput->IsOpen())
    PTrace::SetStream(traceOutput);
  else {
    PTRACE(0, PProcess::Current().GetName() << "Could not open trace output file \"" << fn << '"');
    delete traceOutput;
  }
}

void PTrace::Initialise(unsigned level, const char * filename, unsigned options)
{
  // If we have a tracing version, then open trace file and set modes
#if PTRACING
  PProcess & process = PProcess::Current();
#endif

#if PMEMORY_CHECK
  int ignoreAllocations = -1;
#endif

  PTrace_Filename = filename;
  PTraceOptions = options;

  if (options & RotateDaily)
    PTrace_lastDayOfYear = PTime((PTraceOptions&GMTTime) ? PTime::GMT : PTime::Local).GetDayOfYear();
  else
    PTrace_lastDayOfYear = 0;

  if (filename != NULL) {
#if PMEMORY_CHECK
    ignoreAllocations = PMemoryHeap::SetIgnoreAllocations(TRUE) ? 1 : 0;
#endif
    OpenTraceFile();
  }

  PTraceLevelThreshold = level;

  PTRACE(1, process.GetName()
         << "\tVersion " << process.GetVersion(TRUE)
         << " by " << process.GetManufacturer()
         << " on " << process.GetOSClass() << ' ' << process.GetOSName()
         << " (" << process.GetOSVersion() << '-' << process.GetOSHardware()
         << ") at " << PTime().AsString("yyyy/M/d h:mm:ss.uuu"));

#if PMEMORY_CHECK
  if (ignoreAllocations >= 0)
    PMemoryHeap::SetIgnoreAllocations(ignoreAllocations != 0);
#endif
}


void PTrace::SetOptions(unsigned options)
{
  PTraceOptions |= options;
}


void PTrace::ClearOptions(unsigned options)
{
  PTraceOptions &= ~options;
}


unsigned PTrace::GetOptions()
{
  return PTraceOptions;
}


void PTrace::SetLevel(unsigned level)
{
  PTraceLevelThreshold = level;