1 2 #include <petsc/private/viewerimpl.h> /*I "petscsys.h" I*/ 3 4 #define QUEUESTRINGSIZE 1024 5 6 typedef struct _PrintfQueue *PrintfQueue; 7 struct _PrintfQueue { 8 char string[QUEUESTRINGSIZE]; 9 PrintfQueue next; 10 }; 11 12 typedef struct { 13 FILE *fd; 14 PetscFileMode mode; /* The mode in which to open the file */ 15 char *filename; 16 PetscBool vecSeen; /* The flag indicating whether any vector has been viewed so far */ 17 PrintfQueue queue, queueBase; 18 int queueLength; 19 } PetscViewer_VU; 20 21 static PetscErrorCode PetscViewerFileClose_VU(PetscViewer viewer) 22 { 23 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 24 PetscErrorCode ierr; 25 26 PetscFunctionBegin; 27 if (vu->vecSeen) { 28 ierr = PetscViewerVUPrintDeferred(viewer, "};\n\n");CHKERRQ(ierr); 29 } 30 ierr = PetscViewerVUFlushDeferred(viewer);CHKERRQ(ierr); 31 ierr = PetscFClose(PetscObjectComm((PetscObject)viewer), vu->fd);CHKERRQ(ierr); 32 vu->fd = NULL; 33 ierr = PetscFree(vu->filename);CHKERRQ(ierr); 34 PetscFunctionReturn(0); 35 } 36 37 PetscErrorCode PetscViewerDestroy_VU(PetscViewer viewer) 38 { 39 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 40 PetscErrorCode ierr; 41 42 PetscFunctionBegin; 43 ierr = PetscViewerFileClose_VU(viewer);CHKERRQ(ierr); 44 ierr = PetscFree(vu);CHKERRQ(ierr); 45 PetscFunctionReturn(0); 46 } 47 48 PetscErrorCode PetscViewerFlush_VU(PetscViewer viewer) 49 { 50 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 51 PetscMPIInt rank; 52 int err; 53 PetscErrorCode ierr; 54 55 PetscFunctionBegin; 56 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)viewer), &rank);CHKERRQ(ierr); 57 if (!rank) { 58 err = fflush(vu->fd); 59 if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fflush() failed on file"); 60 } 61 PetscFunctionReturn(0); 62 } 63 64 PetscErrorCode PetscViewerFileGetName_VU(PetscViewer viewer, const char **name) 65 { 66 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 67 68 PetscFunctionBegin; 69 *name = vu->filename; 70 PetscFunctionReturn(0); 71 } 72 73 PetscErrorCode PetscViewerFileSetName_VU(PetscViewer viewer, const char name[]) 74 { 75 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 76 char fname[PETSC_MAX_PATH_LEN]; 77 int rank; 78 PetscErrorCode ierr; 79 80 PetscFunctionBegin; 81 if (!name) PetscFunctionReturn(0); 82 ierr = PetscViewerFileClose_VU(viewer);CHKERRQ(ierr); 83 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)viewer), &rank);CHKERRQ(ierr); 84 if (rank != 0) PetscFunctionReturn(0); 85 ierr = PetscStrallocpy(name, &vu->filename);CHKERRQ(ierr); 86 ierr = PetscFixFilename(name, fname);CHKERRQ(ierr); 87 switch (vu->mode) { 88 case FILE_MODE_READ: 89 vu->fd = fopen(fname, "r"); 90 break; 91 case FILE_MODE_WRITE: 92 vu->fd = fopen(fname, "w"); 93 break; 94 case FILE_MODE_APPEND: 95 vu->fd = fopen(fname, "a"); 96 break; 97 case FILE_MODE_UPDATE: 98 vu->fd = fopen(fname, "r+"); 99 if (!vu->fd) vu->fd = fopen(fname, "w+"); 100 break; 101 case FILE_MODE_APPEND_UPDATE: 102 /* I really want a file which is opened at the end for updating, 103 not a+, which opens at the beginning, but makes writes at the end. 104 */ 105 vu->fd = fopen(fname, "r+"); 106 if (!vu->fd) vu->fd = fopen(fname, "w+"); 107 else { 108 ierr = fseek(vu->fd, 0, SEEK_END);CHKERRQ(ierr); 109 } 110 break; 111 default: 112 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG, "Invalid file mode %d", vu->mode); 113 } 114 115 if (!vu->fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN, "Cannot open PetscViewer file: %s", fname); 116 #if defined(PETSC_USE_LOG) 117 PetscLogObjectState((PetscObject) viewer, "File: %s", name); 118 #endif 119 PetscFunctionReturn(0); 120 } 121 122 PETSC_EXTERN PetscErrorCode PetscViewerCreate_VU(PetscViewer viewer) 123 { 124 PetscViewer_VU *vu; 125 PetscErrorCode ierr; 126 127 PetscFunctionBegin; 128 ierr = PetscNewLog(viewer,&vu);CHKERRQ(ierr); 129 viewer->data = (void*) vu; 130 131 viewer->ops->destroy = PetscViewerDestroy_VU; 132 viewer->ops->flush = PetscViewerFlush_VU; 133 viewer->ops->getsubviewer = NULL; 134 viewer->ops->restoresubviewer = NULL; 135 136 vu->fd = NULL; 137 vu->mode = FILE_MODE_WRITE; 138 vu->filename = NULL; 139 vu->vecSeen = PETSC_FALSE; 140 vu->queue = NULL; 141 vu->queueBase = NULL; 142 vu->queueLength = 0; 143 144 ierr = PetscObjectComposeFunction((PetscObject) viewer,"PetscViewerFileSetName_C",PetscViewerFileSetName_VU);CHKERRQ(ierr); 145 ierr = PetscObjectComposeFunction((PetscObject) viewer,"PetscViewerFileGetName_C",PetscViewerFileGetName_VU);CHKERRQ(ierr); 146 PetscFunctionReturn(0); 147 } 148 149 /*@C 150 PetscViewerVUGetPointer - Extracts the file pointer from a VU PetscViewer. 151 152 Not Collective 153 154 Input Parameter: 155 . viewer - The PetscViewer 156 157 Output Parameter: 158 . fd - The file pointer 159 160 Level: intermediate 161 162 Concepts: PetscViewer^file pointer 163 Concepts: file pointer^getting from PetscViewer 164 165 .seealso: PetscViewerASCIIGetPointer() 166 @*/ 167 PetscErrorCode PetscViewerVUGetPointer(PetscViewer viewer, FILE **fd) 168 { 169 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 170 171 PetscFunctionBegin; 172 PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,1); 173 PetscValidPointer(fd,2); 174 *fd = vu->fd; 175 PetscFunctionReturn(0); 176 } 177 178 /*@C 179 PetscViewerVUSetMode - Sets the mode in which to open the file. 180 181 Not Collective 182 183 Input Parameters: 184 + viewer - The PetscViewer 185 - mode - The file mode 186 187 Level: intermediate 188 189 .seealso: PetscViewerASCIISetMode() 190 @*/ 191 PetscErrorCode PetscViewerVUSetMode(PetscViewer viewer, PetscFileMode mode) 192 { 193 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 194 195 PetscFunctionBegin; 196 vu->mode = mode; 197 PetscFunctionReturn(0); 198 } 199 200 /*@C 201 PetscViewerVUSetVecSeen - Sets the flag which indicates whether we have viewed 202 a vector. This is usually called internally rather than by a user. 203 204 Not Collective 205 206 Input Parameters: 207 + viewer - The PetscViewer 208 - vecSeen - The flag which indicates whether we have viewed a vector 209 210 Level: advanced 211 212 .seealso: PetscViewerVUGetVecSeen() 213 @*/ 214 PetscErrorCode PetscViewerVUSetVecSeen(PetscViewer viewer, PetscBool vecSeen) 215 { 216 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 217 218 PetscFunctionBegin; 219 vu->vecSeen = vecSeen; 220 PetscFunctionReturn(0); 221 } 222 223 /*@C 224 PetscViewerVUGetVecSeen - Gets the flag which indicates whether we have viewed 225 a vector. This is usually called internally rather than by a user. 226 227 Not Collective 228 229 Input Parameter: 230 . viewer - The PetscViewer 231 232 Output Parameter: 233 . vecSeen - The flag which indicates whether we have viewed a vector 234 235 Level: advanced 236 237 .seealso: PetscViewerVUGetVecSeen() 238 @*/ 239 PetscErrorCode PetscViewerVUGetVecSeen(PetscViewer viewer, PetscBool *vecSeen) 240 { 241 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 242 243 PetscFunctionBegin; 244 PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,1); 245 PetscValidPointer(vecSeen,2); 246 *vecSeen = vu->vecSeen; 247 PetscFunctionReturn(0); 248 } 249 250 /*@C 251 PetscViewerVUPrintDeferred - Prints to the deferred write cache instead of the file. 252 253 Not Collective 254 255 Input Parameters: 256 + viewer - The PetscViewer 257 - format - The format string 258 259 Level: intermediate 260 261 .seealso: PetscViewerVUFlushDeferred() 262 @*/ 263 PetscErrorCode PetscViewerVUPrintDeferred(PetscViewer viewer, const char format[], ...) 264 { 265 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 266 va_list Argp; 267 size_t fullLength; 268 PrintfQueue next; 269 PetscErrorCode ierr; 270 271 PetscFunctionBegin; 272 ierr = PetscNew(&next);CHKERRQ(ierr); 273 if (vu->queue) { 274 vu->queue->next = next; 275 vu->queue = next; 276 vu->queue->next = NULL; 277 } else { 278 vu->queueBase = vu->queue = next; 279 } 280 vu->queueLength++; 281 282 va_start(Argp, format); 283 ierr = PetscMemzero(next->string,QUEUESTRINGSIZE);CHKERRQ(ierr); 284 ierr = PetscVSNPrintf(next->string, QUEUESTRINGSIZE,format,&fullLength, Argp);CHKERRQ(ierr); 285 va_end(Argp); 286 PetscFunctionReturn(0); 287 } 288 289 /*@C 290 PetscViewerVUFlushDeferred - Flushes the deferred write cache to the file. 291 292 Not Collective 293 294 Input Parameter: 295 + viewer - The PetscViewer 296 297 Level: intermediate 298 299 .seealso: PetscViewerVUPrintDeferred() 300 @*/ 301 PetscErrorCode PetscViewerVUFlushDeferred(PetscViewer viewer) 302 { 303 PetscViewer_VU *vu = (PetscViewer_VU*) viewer->data; 304 PrintfQueue next = vu->queueBase; 305 PrintfQueue previous; 306 int i; 307 PetscErrorCode ierr; 308 309 PetscFunctionBegin; 310 for (i = 0; i < vu->queueLength; i++) { 311 PetscFPrintf(PetscObjectComm((PetscObject)viewer), vu->fd, "%s", next->string); 312 previous = next; 313 next = next->next; 314 ierr = PetscFree(previous);CHKERRQ(ierr); 315 } 316 vu->queue = NULL; 317 vu->queueLength = 0; 318 PetscFunctionReturn(0); 319 } 320