#include <petscsys.h>        /*I  "petscsys.h"   I*/
#include <petscthreadcomm.h>

#if defined(PETSC_USE_DEBUG)

#if defined(PETSC_HAVE_PTHREADCLASSES)
#if defined(PETSC_PTHREAD_LOCAL)
PETSC_PTHREAD_LOCAL PetscStack  *petscstack = 0;
#endif
#else
PetscStack *petscstack = 0;
#endif

#undef __FUNCT__
#define __FUNCT__ "PetscStackPublish"
PetscErrorCode  PetscStackPublish(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackDepublish"
PetscErrorCode  PetscStackDepublish(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}

PetscErrorCode PetscStackCreate_kernel(PetscInt trank)
{
  PetscStack *petscstack_in;
  if(PetscStackActive) return 0;

  petscstack_in = (PetscStack*)malloc(sizeof(PetscStack));
  petscstack_in->currentsize = 0;
  PetscThreadLocalSetValue(petscstack,petscstack_in);
  return 0;
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackCreate"
PetscErrorCode  PetscStackCreate(void)
{
  PetscErrorCode ierr;

  ierr = PetscThreadCommRunKernel0(PETSC_COMM_SELF,(PetscThreadKernel)PetscStackCreate_kernel);CHKERRQ(ierr);
  ierr = PetscThreadCommBarrier(PETSC_COMM_SELF);CHKERRQ(ierr);
  return 0;
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackView"
PetscErrorCode  PetscStackView(PetscViewer viewer)
{
  PetscErrorCode ierr;
  int  i;
  FILE *file;
  PetscStack* petscstackp;

  petscstackp = (PetscStack*)PetscThreadLocalGetValue(petscstack);
  if (!viewer) viewer = PETSC_VIEWER_STDOUT_SELF;
  ierr = PetscViewerASCIIGetPointer(viewer,&file);CHKERRQ(ierr);

  if (file == PETSC_STDOUT) {
    (*PetscErrorPrintf)("Note: The EXACT line numbers in the stack are not available,\n");
    (*PetscErrorPrintf)("      INSTEAD the line number of the start of the function\n");
    (*PetscErrorPrintf)("      is given.\n");
    for (i=petscstackp->currentsize-1; i>=0; i--) {
      (*PetscErrorPrintf)("[%d] %s line %d %s%s\n",PetscGlobalRank,
                                                   petscstackp->function[i],
                                                   petscstackp->line[i],
                                                   petscstackp->directory[i],
                                                   petscstackp->file[i]);
    }
  } else {
    fprintf(file,"Note: The EXACT line numbers in the stack are not available,\n");
    fprintf(file,"      INSTEAD the line number of the start of the function\n");
    fprintf(file,"      is given.\n");
    for (i=petscstackp->currentsize-1; i>=0; i--) {
      fprintf(file,"[%d] %s line %d %s%s\n",PetscGlobalRank,
                                            petscstackp->function[i],
                                            petscstackp->line[i],
                                            petscstackp->directory[i],
                                            petscstackp->file[i]);
    }
  }
  return 0;
}

PetscErrorCode PetscStackDestroy_kernel(PetscInt trank)
{
  if(PetscStackActive) {
    PetscStack *petscstack_in;
    petscstack_in = (PetscStack*)PetscThreadLocalGetValue(petscstack);
    free(petscstack_in);
    PetscThreadLocalSetValue(petscstack,(PetscStack*)0);
  }
  return 0;
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackDestroy"
/*  PetscFunctionBegin;  so that make rule checkbadPetscFunctionBegin works */
PetscErrorCode  PetscStackDestroy(void)
{
  PetscErrorCode ierr;
  ierr = PetscThreadCommRunKernel0(PETSC_COMM_SELF,(PetscThreadKernel)PetscStackDestroy_kernel);CHKERRQ(ierr);
  ierr = PetscThreadCommBarrier(PETSC_COMM_SELF);CHKERRQ(ierr);
  PetscThreadLocalDestroy(petscstack); /* Deletes pthread_key if it was used */
  return 0;
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackCopy"
/*  PetscFunctionBegin;  so that make rule checkbadPetscFunctionBegin works */
PetscErrorCode  PetscStackCopy(PetscStack* sint,PetscStack* sout)
{
  int i;

  if (!sint) {
    sout->currentsize = 0;
  } else {
    for (i=0; i<sint->currentsize; i++) {
      sout->function[i]     = sint->function[i];
      sout->file[i]         = sint->file[i];
      sout->directory[i]    = sint->directory[i];
      sout->line[i]         = sint->line[i];
      sout->petscroutine[i] = sint->petscroutine[i];
    }
    sout->currentsize = sint->currentsize;
  }
  return 0;
}

#undef __FUNCT__
#define __FUNCT__ "PetscStackPrint"
/*  PetscFunctionBegin;  so that make rule checkbadPetscFunctionBegin works */
PetscErrorCode  PetscStackPrint(PetscStack* sint,FILE *fp)
{
  int i;

  if (!sint) return(0);
  for (i=sint->currentsize-2; i>=0; i--) {
    fprintf(fp,"      [%d]  %s() line %d in %s%s\n",PetscGlobalRank,sint->function[i],sint->line[i],sint->directory[i],sint->file[i]);
  }
  return 0;
}

#else
#undef __FUNCT__
#define __FUNCT__ "PetscStackPublish"
PetscErrorCode  PetscStackPublish(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "PetscStackDepublish"
PetscErrorCode  PetscStackDepublish(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "PetscStackCreate"
PetscErrorCode  PetscStackCreate(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "PetscStackView"
PetscErrorCode  PetscStackView(PetscViewer viewer)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "PetscStackDestroy"
PetscErrorCode  PetscStackDestroy(void)
{
  PetscFunctionBegin;
  PetscFunctionReturn(0);
}

#endif