1 #include <petscsys.h> 2 #if defined(PETSC_HAVE_SYS_TIME_H) 3 #include <sys/time.h> 4 #endif 5 #include <time.h> 6 #if defined(PETSC_NEEDS_GETTIMEOFDAY_PROTO) 7 PETSC_EXTERN int gettimeofday(struct timeval *, struct timezone *); 8 #endif 9 10 /*@C 11 PetscGetDate - Gets the current date. 12 13 Not Collective 14 15 Input Parameter: 16 . len - length of string to hold date 17 18 Output Parameter: 19 . date - the date 20 21 Level: beginner 22 23 Note: 24 This function makes a system call and thus SHOULD NOT be called from an error handler. 25 26 Developer Notes: 27 This function is called once during `PetscInitialize()`. 28 It stashes the timestamp, and uses it when needed. This is so that 29 error handlers may report the date without generating possible 30 additional system errors during the call to get the date. 31 32 .seealso: `PetscGetHostName()` 33 @*/ 34 PetscErrorCode PetscGetDate(char date[], size_t len) 35 { 36 char *str = NULL; 37 #if defined(PETSC_HAVE_TIME) 38 time_t aclock; 39 #else 40 struct timeval tp; 41 #endif 42 43 PetscFunctionBegin; 44 #if defined(PETSC_HAVE_TIME) 45 time(&aclock); 46 PetscCall(PetscStrncpy(date, asctime(localtime(&aclock)), len)); 47 #else 48 gettimeofday(&tp, NULL); 49 PetscCall(PetscStrncpy(date, asctime(localtime((time_t *)&tp.tv_sec)), len)); 50 #endif 51 /* now strip out the new-line chars at the end of the string */ 52 PetscCall(PetscStrstr(date, "\n", &str)); 53 if (str) str[0] = 0; 54 PetscFunctionReturn(PETSC_SUCCESS); 55 } 56