Created new abstraction package from the code that was all over the place.

1 files changed, 199 insertions, 0 deletions

diff --git a/src/proof/abs/absPth.c b/src/proof/abs/absPth.c
new file mode 100644
index 00000000..73f76822
--- /dev/null
+++ b/src/proof/abs/absPth.c
@@ -0,0 +1,199 @@
+/**CFile****************************************************************
+
+  FileName    [absPth.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Abstraction package.]
+
+  Synopsis    [Interface to pthreads.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: absPth.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+ 
+#include "aig/ioa/ioa.h"
+#include "proof/pdr/pdr.h"
+
+// uncomment this line to enable pthreads
+//#define ABC_USE_PTHREADS
+
+// to compile on Linux, modify Makefile as follows:
+// add -pthread to OPTFLAGS
+// add -lpthread to LIBS
+
+#ifdef ABC_USE_PTHREADS
+
+#ifdef WIN32
+#include "../lib/pthread.h"
+#else
+#include <pthread.h>
+#include <unistd.h>
+#endif
+
+#endif
+
+ABC_NAMESPACE_IMPL_START 
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+#ifndef ABC_USE_PTHREADS
+
+void Gia_Ga2ProveAbsracted( char * pFileName, int fVerbose ) {}
+void Gia_Ga2ProveCancel( int fVerbose )                      {}
+int  Gia_Ga2ProveCheck( int fVerbose )                       { return 0; }
+
+#else // pthreads are used
+
+// information given to the thread
+typedef struct Abs_ThData_t_
+{
+    char * pFileName;
+    int    fVerbose;
+    int    RunId;
+} Abs_ThData_t;
+
+// mutext to control access to shared variables
+pthread_mutex_t g_mutex = PTHREAD_MUTEX_INITIALIZER;
+static volatile int g_nRunIds = 0;             // the number of the last prover instance
+static volatile int g_fAbstractionProved = 0;  // set to 1 when prover successed to prove
+
+// call back procedure for PDR
+int Abs_CallBackToStop( int RunId ) { assert( RunId <= g_nRunIds ); return RunId < g_nRunIds; }
+
+// test procedure to replace PDR
+int Pdr_ManSolve_test( Aig_Man_t * pAig, Pdr_Par_t * pPars, Abc_Cex_t ** ppCex )
+{
+    char * p = ABC_ALLOC( char, 111 );
+    while ( 1 )
+    {
+        if ( pPars->pFuncStop && pPars->pFuncStop(pPars->RunId) )
+            break;
+    }
+    ABC_FREE( p );
+    return -1;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Create one thread]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void * Abs_ProverThread( void * pArg )
+{
+    Abs_ThData_t * pThData = (Abs_ThData_t *)pArg;
+    Pdr_Par_t Pars, * pPars = &Pars;
+    Aig_Man_t * pAig, * pTemp;
+    int RetValue, status;
+    pAig = Ioa_ReadAiger( pThData->pFileName, 0 );
+    if ( pAig == NULL )
+        Abc_Print( 1, "\nCannot open file \"%s\".\n", pThData->pFileName );
+    else
+    {
+        // synthesize abstraction
+        pAig = Aig_ManScl( pTemp = pAig, 1, 1, 0, -1, -1, 0, 0 );
+        Aig_ManStop( pTemp );
+        // call PDR
+        Pdr_ManSetDefaultParams( pPars );
+        pPars->fSilent = 1;
+        pPars->RunId = pThData->RunId;
+        pPars->pFuncStop = Abs_CallBackToStop;
+        RetValue = Pdr_ManSolve( pAig, pPars, NULL );
+//        RetValue = Pdr_ManSolve_test( pAig, pPars, NULL );
+        // update the result
+        if ( RetValue == 1 )
+        {
+            status = pthread_mutex_lock(&g_mutex);  assert( status == 0 );
+            g_fAbstractionProved = 1;
+            status = pthread_mutex_unlock(&g_mutex);  assert( status == 0 );
+        }
+        // free memory
+        Aig_ManStop( pAig );
+        // quit this thread
+        if ( pThData->fVerbose )
+        {
+            if ( RetValue == 1 )
+                Abc_Print( 1, "\nProved abstraction %d.\n", pThData->RunId );
+            else if ( RetValue == 0 )
+                Abc_Print( 1, "\nDisproved abstraction %d.\n", pThData->RunId );
+            else if ( RetValue == -1 )
+                Abc_Print( 1, "\nCancelled abstraction %d.\n", pThData->RunId );
+            else assert( 0 );
+        }
+    }
+    ABC_FREE( pThData->pFileName );
+    ABC_FREE( pThData );
+    // quit this thread
+    pthread_exit( NULL );
+    assert(0);
+    return NULL;
+}
+void Gia_Ga2ProveAbsracted( char * pFileName, int fVerbose )
+{
+    Abs_ThData_t * pThData;
+    pthread_t ProverThread;
+    int status;
+    assert( pFileName != NULL );
+    // disable verbosity
+    fVerbose = 0;
+    // reset the proof 
+    status = pthread_mutex_lock(&g_mutex);  assert( status == 0 );
+    g_fAbstractionProved = 0;
+    status = pthread_mutex_unlock(&g_mutex);  assert( status == 0 );
+    // collect thread data
+    pThData = ABC_CALLOC( Abs_ThData_t, 1 );
+    pThData->pFileName = Abc_UtilStrsav( (void *)pFileName );
+    pThData->fVerbose = fVerbose;
+    status = pthread_mutex_lock(&g_mutex);  assert( status == 0 );
+    pThData->RunId = ++g_nRunIds;
+    status = pthread_mutex_unlock(&g_mutex);  assert( status == 0 );
+    // create thread
+    if ( fVerbose )  Abc_Print( 1, "\nTrying to prove abstraction %d.\n", pThData->RunId );
+    status = pthread_create( &ProverThread, NULL, Abs_ProverThread, pThData );
+    assert( status == 0 );
+}
+void Gia_Ga2ProveCancel( int fVerbose )
+{
+    int status;
+    status = pthread_mutex_lock(&g_mutex);  assert( status == 0 );
+    g_nRunIds++;
+    status = pthread_mutex_unlock(&g_mutex);  assert( status == 0 );
+}
+int Gia_Ga2ProveCheck( int fVerbose )
+{
+    int status;
+    if ( g_fAbstractionProved == 0 )
+        return 0;
+    status = pthread_mutex_lock(&g_mutex);  assert( status == 0 );
+    g_fAbstractionProved = 0;
+    status = pthread_mutex_unlock(&g_mutex);  assert( status == 0 );
+    return 1;
+}
+
+#endif
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+