1 2 #include "src/vec/pf/pfimpl.h" /*I "petscpf.h" I*/ 3 4 /* 5 Ths PF generates a function on the fly and loads it into the running 6 program. 7 */ 8 9 #undef __FUNCT__ 10 #define __FUNCT__ "PFView_String" 11 PetscErrorCode PFView_String(void *value,PetscViewer viewer) 12 { 13 PetscErrorCode ierr; 14 PetscTruth iascii; 15 16 PetscFunctionBegin; 17 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_ASCII,&iascii);CHKERRQ(ierr); 18 if (iascii) { 19 ierr = PetscViewerASCIIPrintf(viewer,"String = %s\n",(char*)value);CHKERRQ(ierr); 20 } 21 PetscFunctionReturn(0); 22 } 23 24 #undef __FUNCT__ 25 #define __FUNCT__ "PFDestroy_String" 26 PetscErrorCode PFDestroy_String(void *value) 27 { 28 PetscErrorCode ierr; 29 30 PetscFunctionBegin; 31 ierr = PetscStrfree(value);CHKERRQ(ierr); 32 PetscFunctionReturn(0); 33 } 34 35 #undef __FUNCT__ 36 #define __FUNCT__ "PFStringCreateFunction" 37 /* 38 PFStringCreateFunction - Creates a function from a string 39 40 Collective over PF 41 42 Input Parameters: 43 + pf - the function object 44 - string - the string that defines the function 45 46 Output Parameter: 47 . f - the function pointer. 48 49 .seealso: PFSetFromOptions() 50 51 */ 52 PetscErrorCode PFStringCreateFunction(PF pf,char *string,void **f) 53 { 54 #if defined(PETSC_USE_DYNAMIC_LIBRARIES) 55 PetscErrorCode ierr; 56 char task[1024],tmp[256],lib[PETSC_MAX_PATH_LEN],username[64]; 57 FILE *fd; 58 PetscTruth tmpshared,wdshared,keeptmpfiles = PETSC_FALSE; 59 MPI_Comm comm; 60 #endif 61 62 PetscFunctionBegin; 63 #if defined(PETSC_USE_DYNAMIC_LIBRARIES) 64 ierr = PetscStrfree(pf->data);CHKERRQ(ierr); 65 ierr = PetscStrallocpy(string,(char**)&pf->data);CHKERRQ(ierr); 66 67 /* create the new C function and compile it */ 68 ierr = PetscSharedTmp(pf->comm,&tmpshared);CHKERRQ(ierr); 69 ierr = PetscSharedWorkingDirectory(pf->comm,&wdshared);CHKERRQ(ierr); 70 if (tmpshared) { /* do it in /tmp since everyone has one */ 71 ierr = PetscGetTmp(pf->comm,tmp,PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 72 comm = pf->comm; 73 } else if (!wdshared) { /* each one does in private /tmp */ 74 ierr = PetscGetTmp(pf->comm,tmp,PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 75 comm = PETSC_COMM_SELF; 76 } else { /* do it in current directory */ 77 ierr = PetscStrcpy(tmp,".");CHKERRQ(ierr); 78 comm = pf->comm; 79 } 80 ierr = PetscOptionsHasName(pf->prefix,"-pf_string_keep_files",&keeptmpfiles);CHKERRQ(ierr); 81 if (keeptmpfiles) { 82 sprintf(task,"cd %s ; mkdir ${USERNAME} ; cd ${USERNAME} ; \\cp -f ${PETSC_DIR}/src/pf/impls/string/makefile ./makefile ; make BOPT=${BOPT} MIN=%d NOUT=%d petscdlib STRINGFUNCTION=\"%s\" ; sync\n",tmp,pf->dimin,pf->dimout,string); 83 } else { 84 sprintf(task,"cd %s ; mkdir ${USERNAME} ;cd ${USERNAME} ; \\cp -f ${PETSC_DIR}/src/pf/impls/string/makefile ./makefile ; make BOPT=${BOPT} MIN=%d NOUT=%d -f makefile petscdlib STRINGFUNCTION=\"%s\" ; \\rm -f makefile petscdlib.c libpetscdlib.a ; sync\n",tmp,pf->dimin,pf->dimout,string); 85 } 86 ierr = PetscPOpen(comm,PETSC_NULL,task,"r",&fd);CHKERRQ(ierr); 87 ierr = PetscPClose(comm,fd);CHKERRQ(ierr); 88 89 ierr = MPI_Barrier(comm);CHKERRQ(ierr); 90 91 /* load the apply function from the dynamic library */ 92 ierr = PetscGetUserName(username,64);CHKERRQ(ierr); 93 sprintf(lib,"%s/%s/libpetscdlib",tmp,username); 94 ierr = PetscDLLibrarySym(comm,PETSC_NULL,lib,"PFApply_String",f);CHKERRQ(ierr); 95 #endif 96 PetscFunctionReturn(0); 97 } 98 99 #undef __FUNCT__ 100 #define __FUNCT__ "PFSetFromOptions_String" 101 PetscErrorCode PFSetFromOptions_String(PF pf) 102 { 103 PetscErrorCode ierr; 104 PetscTruth flag; 105 char value[PETSC_MAX_PATH_LEN]; 106 PetscErrorCode (*f)(void*,PetscInt,PetscScalar*,PetscScalar*) = 0; 107 108 PetscFunctionBegin; 109 ierr = PetscOptionsHead("String function options");CHKERRQ(ierr); 110 ierr = PetscOptionsString("-pf_string","Enter the function","PFStringCreateFunction","",value,PETSC_MAX_PATH_LEN,&flag);CHKERRQ(ierr); 111 if (flag) { 112 ierr = PFStringCreateFunction(pf,value,(void**)&f);CHKERRQ(ierr); 113 pf->ops->apply = f; 114 } 115 ierr = PetscOptionsTail();CHKERRQ(ierr); 116 PetscFunctionReturn(0); 117 } 118 119 typedef PetscErrorCode (*FCN)(void*,PetscInt,PetscScalar*,PetscScalar*); /* force argument to next function to not be extern C*/ 120 EXTERN_C_BEGIN 121 #undef __FUNCT__ 122 #define __FUNCT__ "PFCreate_String" 123 PetscErrorCode PFCreate_String(PF pf,void *value) 124 { 125 PetscErrorCode ierr; 126 FCN f = 0; 127 128 PetscFunctionBegin; 129 if (value) { 130 ierr = PFStringCreateFunction(pf,(char*)value,(void**)&f);CHKERRQ(ierr); 131 } 132 ierr = PFSet(pf,f,PETSC_NULL,PFView_String,PFDestroy_String,PETSC_NULL);CHKERRQ(ierr); 133 pf->ops->setfromoptions = PFSetFromOptions_String; 134 PetscFunctionReturn(0); 135 } 136 EXTERN_C_END 137 138 139 140 141 142