Subversion Repositories slepc-dev

/*

   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

   SLEPc - Scalable Library for Eigenvalue Problem Computations

   Copyright (c) 2002-2010, Universidad Politecnica de Valencia, Spain

   This file is part of SLEPc.

   SLEPc is free software: you can redistribute it and/or modify it under  the

   terms of version 3 of the GNU Lesser General Public License as published by

   the Free Software Foundation.

   SLEPc  is  distributed in the hope that it will be useful, but WITHOUT  ANY

   WARRANTY;  without even the implied warranty of MERCHANTABILITY or  FITNESS

   FOR  A  PARTICULAR PURPOSE. See the GNU Lesser General Public  License  for

   more details.

   You  should have received a copy of the GNU Lesser General  Public  License

   along with SLEPc. If not, see <http://www.gnu.org/licenses/>.

   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

*/

#include "slepcsys.h"           /*I "slepcsys.h" I*/

#include "private/epsimpl.h"

#include "private/stimpl.h"

#include "private/svdimpl.h"

#include "private/qepimpl.h"

#include "private/ipimpl.h"

#include <stdlib.h>

#undef __FUNCT__  

#define __FUNCT__ "SlepcPrintVersion"

/*

   SlepcPrintVersion - Prints SLEPc version info.

   Collective on MPI_Comm

*/

PetscErrorCode SlepcPrintVersion(MPI_Comm comm)

{

  PetscErrorCode  info = 0;

  PetscFunctionBegin;

  info = (*PetscHelpPrintf)(comm,"--------------------------------------------\

------------------------------\n"); CHKERRQ(info);

#if (PETSC_VERSION_RELEASE == 1)

  info = (*PetscHelpPrintf)(comm,"SLEPc Release Version %d.%d.%d-%d, %s\n",

#else

  info = (*PetscHelpPrintf)(comm,"SLEPc Development Version %d.%d.%d-%d, %s\n",

#endif

    SLEPC_VERSION_MAJOR,SLEPC_VERSION_MINOR,SLEPC_VERSION_SUBMINOR,SLEPC_VERSION_PATCH,SLEPC_VERSION_PATCH_DATE); CHKERRQ(info);

  info = (*PetscHelpPrintf)(comm,SLEPC_AUTHOR_INFO); CHKERRQ(info);

  info = (*PetscHelpPrintf)(comm,"See docs/manual.html for help. \n"); CHKERRQ(info);

#if !defined(PARCH_win32)

  info = (*PetscHelpPrintf)(comm,"SLEPc libraries linked from %s\n",SLEPC_LIB_DIR); CHKERRQ(info);

#endif

  info = (*PetscHelpPrintf)(comm,"--------------------------------------------\

------------------------------\n"); CHKERRQ(info);

  PetscFunctionReturn(info);

}

#undef __FUNCT__  

#define __FUNCT__ "SlepcPrintHelpIntro"

/*

   SlepcPrintHelpIntro - Prints introductory SLEPc help info.

   Collective on MPI_Comm

*/

PetscErrorCode SlepcPrintHelpIntro(MPI_Comm comm)

{

  PetscErrorCode  info = 0;

  PetscFunctionBegin;

  info = (*PetscHelpPrintf)(comm,"--------------------------------------------\

------------------------------\n"); CHKERRQ(info);

  info = (*PetscHelpPrintf)(comm,"SLEPc help information includes that for the PETSc libraries, which provide\n"); CHKERRQ(info);

  info = (*PetscHelpPrintf)(comm,"low-level system infrastructure and linear algebra tools.\n"); CHKERRQ(info);

  info = (*PetscHelpPrintf)(comm,"--------------------------------------------\

------------------------------\n"); CHKERRQ(info);

  PetscFunctionReturn(info);

}

/* ------------------------Nasty global variables -------------------------------*/

/*

   Indicates whether SLEPc started PETSc, or whether it was

   already started before SLEPc was initialized.

*/

PetscTruth  SlepcBeganPetsc = PETSC_FALSE;

PetscTruth  SlepcInitializeCalled = PETSC_FALSE;

extern PetscLogEvent SLEPC_UpdateVectors, SLEPC_VecMAXPBY;

#if defined(PETSC_USE_DYNAMIC_LIBRARIES)

extern PetscDLLibrary DLLibrariesLoaded;

#endif

#undef __FUNCT__  

#define __FUNCT__ "SlepcInitialize"

/*@C

   SlepcInitialize - Initializes the SLEPc library. SlepcInitialize() calls

   PetscInitialize() if that has not been called yet, so this routine should

   always be called near the beginning of your program.

   Collective on MPI_COMM_WORLD or PETSC_COMM_WORLD if it has been set

   Input Parameters:

+  argc - count of number of command line arguments

.  args - the command line arguments

.  file - [optional] PETSc database file, defaults to ~username/.petscrc

          (use PETSC_NULL for default)

-  help - [optional] Help message to print, use PETSC_NULL for no message

   Fortran Note:

   Fortran syntax is very similar to that of PetscInitialize()

   Level: beginner

.seealso: SlepcInitializeFortran(), SlepcFinalize(), PetscInitialize()

@*/

PetscErrorCode SlepcInitialize(int *argc,char ***args,char file[],const char help[])

{

  PetscErrorCode ierr;

  PetscErrorCode info=0;

#if defined(PETSC_USE_DYNAMIC_LIBRARIES)

  char           libs[PETSC_MAX_PATH_LEN],dlib[PETSC_MAX_PATH_LEN];

  PetscTruth     found;

#endif

  PetscFunctionBegin;

  if (SlepcInitializeCalled) {

    PetscFunctionReturn(0);

  }

#if !defined(PARCH_t3d)

  info = PetscSetHelpVersionFunctions(SlepcPrintHelpIntro,SlepcPrintVersion);CHKERRQ(info);

#endif

  if (!PetscInitializeCalled) {

    info = PetscInitialize(argc,args,file,help);CHKERRQ(info);

    SlepcBeganPetsc = PETSC_TRUE;

  }

  /*

      Load the dynamic libraries

  */

#if defined(PETSC_USE_DYNAMIC_LIBRARIES)

  ierr = PetscStrcpy(libs,SLEPC_LIB_DIR);CHKERRQ(ierr);

  ierr = PetscStrcat(libs,"/libslepc");CHKERRQ(ierr);

  ierr = PetscDLLibraryRetrieve(PETSC_COMM_WORLD,libs,dlib,1024,&found);CHKERRQ(ierr);

  if (found) {

    ierr = PetscDLLibraryAppend(PETSC_COMM_WORLD,&DLLibrariesLoaded,libs);CHKERRQ(ierr);

  } else {

    SETERRQ1(1,"Unable to locate SLEPc dynamic library %s \n",libs);

  }

#else

  ierr = STInitializePackage(PETSC_NULL); CHKERRQ(ierr);

  ierr = EPSInitializePackage(PETSC_NULL); CHKERRQ(ierr);

  ierr = SVDInitializePackage(PETSC_NULL); CHKERRQ(ierr);

  ierr = QEPInitializePackage(PETSC_NULL); CHKERRQ(ierr);

  ierr = IPInitializePackage(PETSC_NULL); CHKERRQ(ierr);

#endif

  ierr = PetscLogEventRegister("UpdateVectors",0,&SLEPC_UpdateVectors);CHKERRQ(ierr);

  ierr = PetscLogEventRegister("VecMAXPBY",0,&SLEPC_VecMAXPBY);CHKERRQ(ierr);

#if defined(PETSC_HAVE_DRAND48)

  /* work-around for Cygwin drand48() initialization bug */

  srand48(0);

#endif

  SlepcInitializeCalled = PETSC_TRUE;

  PetscInfo(0,"SLEPc successfully started\n");

  PetscFunctionReturn(info);

}

#undef __FUNCT__  

#define __FUNCT__ "SlepcFinalize"

/*@

   SlepcFinalize - Checks for options to be called at the conclusion

   of the SLEPc program and calls PetscFinalize().

   Collective on PETSC_COMM_WORLD

   Level: beginner

.seealso: SlepcInitialize(), PetscFinalize()

@*/

PetscErrorCode SlepcFinalize(void)

{

  PetscErrorCode info=0;

  PetscFunctionBegin;

  PetscInfo(0,"SLEPc successfully ended!\n");

  if (SlepcBeganPetsc) {

    info = PetscFinalize();CHKERRQ(info);

  }

  SlepcInitializeCalled = PETSC_FALSE;

  PetscFunctionReturn(info);

}

#ifdef PETSC_USE_DYNAMIC_LIBRARIES

EXTERN_C_BEGIN

#undef __FUNCT__  

#define __FUNCT__ "PetscDLLibraryRegister_slepc"

/*

  PetscDLLibraryRegister - This function is called when the dynamic library

  it is in is opened.

  This one registers all the EPS and ST methods in the libslepc.a

  library.

  Input Parameter:

  path - library path

 */

PetscErrorCode PetscDLLibraryRegister_slepc(char *path)

{

  PetscErrorCode ierr;

  ierr = PetscInitializeNoArguments(); if (ierr) return 1;

  PetscFunctionBegin;

  /*

      If we got here then PETSc was properly loaded

  */

  ierr = STInitializePackage(path); CHKERRQ(ierr);

  ierr = EPSInitializePackage(path); CHKERRQ(ierr);

  ierr = SVDInitializePackage(path); CHKERRQ(ierr);

  ierr = QEPInitializePackage(path); CHKERRQ(ierr);

  ierr = IPInitializePackage(path); CHKERRQ(ierr);

  PetscFunctionReturn(0);

}

EXTERN_C_END

#endif /* PETSC_USE_DYNAMIC_LIBRARIES */