1 files changed, 443 insertions, 0 deletions
diff --git a/gobi-api/fixed-GobiAPI-1.0.40/Core/Event.cpp b/gobi-api/fixed-GobiAPI-1.0.40/Core/Event.cpp
new file mode 100755
index 0000000..3be587c
--- /dev/null
+++ b/gobi-api/fixed-GobiAPI-1.0.40/Core/Event.cpp
@@ -0,0 +1,443 @@
+/*===========================================================================
+FILE:
+   Event.cpp
+
+DESCRIPTION:
+   Implementation of cEvent class
+   
+PUBLIC CLASSES AND METHODS:
+   WaitOnMultipleEvents
+   cEvent
+      Functionality to mimic Windows events using UNIX pipes (enhanced
+      somewhat to allow one to specify a DWORD value to pass through
+      when signalling the event)
+
+   WARNING:
+      This class is not designed to be thread safe
+
+Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of Code Aurora Forum nor
+      the names of its contributors may be used to endorse or promote
+      products derived from this software without specific prior written
+      permission.
+
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+===========================================================================*/
+
+//---------------------------------------------------------------------------
+// Include Files
+//---------------------------------------------------------------------------
+#include "StdAfx.h"
+#include "Event.h"
+
+//---------------------------------------------------------------------------
+// Definitions
+//---------------------------------------------------------------------------
+const DWORD READING = 0;
+const DWORD WRITING = 1;
+
+/*===========================================================================
+METHOD:
+   WaitOnMultipleEvents (Free Method)
+   
+DESCRIPTION:
+   Wait for any of the events to be set and return the value
+
+   Note: If multiple events are set, only the event specified by
+      eventIndex will be read from.  Run this function again
+      to get the next event.
+
+PARAMETERS:
+   events      [ I ] - Vector of events which may be signaled
+   timeoutMS   [ I ] - Relative timeout length (in milliseconds)
+   val         [ O ] - Associated value upon success
+   eventIndex  [ O ] - Index of event which was signaled
+   
+RETURN VALUE:
+   Return code
+      positive for number of events set
+      -ETIME on timeout
+      negative errno value on failure
+===========================================================================*/
+int WaitOnMultipleEvents(
+   std::vector <cEvent *>        events,
+   DWORD                         timeoutMS, 
+   DWORD &                       val,
+   DWORD &                       eventIndex )
+{
+   // Check internal pipes' status
+   for (int index = 0; index < events.size(); index++)
+   {
+      int error = events[index]->mError;
+      if (error != 0)
+      {
+         TRACE( "cEvent %d has error %d\n", index, error );
+         return -error;
+      }
+   }
+
+   // Initialize the FD set
+   fd_set fds;
+   FD_ZERO( &fds );
+
+   // Add each item to the FD set, keeping track of the largest,
+   // which is used for select()
+   int largestFD = 0;
+   for (int index = 0; index < events.size(); index++)
+   {
+      int pipe = events[index]->mPipes[READING];
+      FD_SET( pipe, &fds );
+
+      largestFD = std::max( pipe, largestFD );
+   }
+   
+   struct timeval timeOut;
+
+   // Add avoiding an overflow on (long)usec
+   timeOut.tv_sec = timeoutMS / 1000l;
+   timeOut.tv_usec = ( timeoutMS % 1000l ) * 1000l;
+
+   // Wait for activity on the pipes for the specified amount of time
+   int rc = select( largestFD + 1, &fds, 0, 0, &timeOut );
+   if (rc == -1)
+   {
+      TRACE( "WaitOnMultipleEvents error %d\n", errno );
+      return -errno;
+   }
+   else if (rc == 0)
+   {
+      // No activity on the pipes
+      return -ETIME;
+   }
+
+   int numSignaled = rc;
+
+   // Only read from first pipe which was signaled
+   int signaled = -1;
+   for (int index = 0; index < events.size(); index++)
+   {
+      int pipe = events[index]->mPipes[READING];
+      if (FD_ISSET( pipe, &fds ) != 0)
+      {
+         signaled = index;
+         break;
+      }
+   }
+
+   if (signaled == -1)
+   {
+      // Odd, no one was signaled
+      return -ENODATA;
+   }
+
+   DWORD tempVal = 0;
+   rc = events[signaled]->Read( tempVal );
+   if (rc == 0)
+   {
+      // Success
+      val = tempVal;
+      eventIndex = signaled;
+      return numSignaled;
+   }
+   else
+   {
+      // failure
+      return rc;
+   }
+}
+
+/*=========================================================================*/
+// cEvent Methods
+/*=========================================================================*/
+
+/*===========================================================================
+METHOD:
+   cEvent (Public Method)
+   
+DESCRIPTION:
+   Constructor
+
+RETURN VALUE:
+   None
+===========================================================================*/
+cEvent::cEvent()
+   :   mError( 0 )
+{
+   int rc = pipe( mPipes );
+   if (rc != 0)
+   {
+      mError = errno;
+      TRACE( "cEvent - Error %d creating pipe, %s\n", 
+             mError, 
+             strerror( mError ) );
+   }
+}
+
+/*===========================================================================
+METHOD:
+   ~cEvent (Public Method)
+   
+DESCRIPTION:
+   Destructor
+
+RETURN VALUE:
+   None
+===========================================================================*/
+cEvent::~cEvent()
+{
+   // Check internal pipe status
+   if (mError == 0)
+   {
+      Close();
+      mError = EBADF;
+   }
+}
+
+/*===========================================================================
+METHOD:
+   Close (Internal Method)
+   
+DESCRIPTION:
+   Close pipe
+
+RETURN VALUE:
+   Return code
+      0 on success
+      errno value on failure
+===========================================================================*/
+int cEvent::Close()
+{
+   int retCode = 0;
+
+   int rc = close( mPipes[READING] );
+   mPipes[READING] = -1;
+
+   if (rc != 0)
+   {
+      retCode = errno;
+      TRACE( "cEvent - Error %d deleting pipe[READING], %s\n", 
+             retCode, 
+             strerror( retCode ) );
+   }
+
+   rc = close( mPipes[WRITING] );
+   mPipes[WRITING] = -1;
+
+   if (rc != 0)
+   {
+      retCode = errno;
+      TRACE( "cEvent - Error %d deleting pipe[WRITING], %s\n", 
+             retCode, 
+             strerror( retCode ) );
+   }
+   
+   return retCode;
+}
+
+/*===========================================================================
+METHOD:
+   Set (Public Method)
+   
+DESCRIPTION:
+   Set/signal the event with the specified value
+
+PARAMETERS:
+   val         [ I ] - Value to pass through with signal
+   
+RETURN VALUE:
+   Return code
+      0 on success
+      errno value on failure
+===========================================================================*/
+int cEvent::Set( DWORD val )
+{
+   // Check internal pipe status
+   if (mError != 0)
+   {
+      return mError;
+   }
+
+   PBYTE pWrite = (PBYTE)&val;
+
+   int writeSize = sizeof( DWORD );
+   while (writeSize > 0)
+   {
+      int bytesWritten = write( mPipes[WRITING], pWrite, writeSize );
+      if (bytesWritten == -1)
+      {
+         // Store error from write
+         int writeErr = errno;
+
+         // First error?
+         if (mError == 0)
+         {
+            // Yes, save the error
+            mError = writeErr;
+         }
+
+         // We cannot recover from this error
+         Close();
+         return writeErr;
+      }
+      
+      pWrite += bytesWritten;
+      writeSize -= bytesWritten;
+   }      
+
+   // Success
+   return 0;
+}
+      
+/*===========================================================================
+METHOD:
+   Wait (Free Method)
+   
+DESCRIPTION:
+   Wait for the event to be signalled and return the read in value
+
+PARAMETERS:
+   timeoutMS   [ I ] - Relative timeout length (in milliseconds)
+   val         [ O ] - Associated value upon success
+   
+RETURN VALUE:
+   Return code
+      0 on success
+      ETIME on timeout
+      errno value on failure
+===========================================================================*/
+int cEvent::Wait( 
+   DWORD                      timeoutMS, 
+   DWORD &                    val )
+{
+   // Check internal pipe status
+   if (mError != 0)
+   {
+      return mError;
+   }
+
+   fd_set fds;
+   FD_ZERO( &fds );
+   FD_SET( mPipes[READING], &fds );
+   
+   struct timeval timeOut;
+
+   // Add avoiding an overflow on (long)usec
+   timeOut.tv_sec = timeoutMS / 1000l;
+   timeOut.tv_usec = ( timeoutMS % 1000l ) * 1000l;
+
+   // Wait for activity on the pipe for the specified amount of time
+   int rc = select( mPipes[READING] + 1, &fds, 0, 0, &timeOut );
+   if (rc == -1)
+   {
+      // Store error from select
+      int selectErr = errno;
+
+      // First error?
+      if (mError == 0)
+      {
+         // Yes, save the error
+         mError = selectErr;
+      }
+
+      // We cannot recover from this error
+      Close();
+      return selectErr;
+   }
+   else if (rc == 0)
+   {
+      // No activity on the pipe
+      return ETIME;
+   }
+
+   return Read( val );
+}
+
+/*===========================================================================
+METHOD:
+   Clear (Free Method)
+   
+DESCRIPTION:
+   Read and discard all values currently in the pipe
+===========================================================================*/
+void cEvent::Clear()
+{
+   DWORD unusedVal;
+   int rc = 0;
+   while (rc == 0)
+   {
+      rc = Wait( (DWORD)0, unusedVal );
+   }
+}
+
+
+/*===========================================================================
+METHOD:
+   Read (Internal Method)
+   
+DESCRIPTION:
+   Read a DWORD from the pipe
+
+RETURN VALUE:
+   Return code
+      0 on success
+      errno value on failure
+===========================================================================*/
+int cEvent::Read( DWORD & val )
+{
+   DWORD tempVal;
+   PBYTE pRead = (PBYTE)&tempVal;
+
+   int readSize = sizeof( DWORD );
+   while (readSize > 0)
+   {
+      int bytesRead = read( mPipes[READING], pRead, readSize );
+      if (bytesRead <= 0)
+      {
+         // Store error from read
+         int readErr = errno;
+         if (readErr == 0)
+         {
+            // Hard error! This should NEVER happen for a pipe
+            ASSERT( 0 );
+            readErr = EBADF;
+         }
+
+         // First error?
+         if (mError == 0)
+         {
+            // Yes, store the error
+            mError = readErr;
+         }
+
+         // We cannot recover from this error
+         Close();
+         return readErr;
+      }
+      
+      pRead += bytesRead;
+      readSize -= bytesRead;
+   }
+
+   val = tempVal;
+   
+   return 0;
+}
+\ No newline at end of file