diff options
Diffstat (limited to 'src/H5T.c')
| -rw-r--r-- | src/H5T.c | 444 |
1 files changed, 318 insertions, 126 deletions
@@ -301,6 +301,9 @@ /* Local Typedefs */ /******************/ +/* Typedef for recursive const-correct datatype copying routines */ +typedef H5T_t *(*H5T_copy_func_t)(H5T_t *old_dt); + /********************/ /* Local Prototypes */ @@ -313,6 +316,11 @@ static herr_t H5T__set_size(H5T_t *dt, size_t size); static herr_t H5T__close_cb(H5T_t *dt); static H5T_path_t *H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_conv_func_t *conv); static hbool_t H5T__detect_vlen_ref(const H5T_t *dt); +static H5T_t *H5T__initiate_copy(const H5T_t *old_dt); +static H5T_t *H5T__copy_transient(H5T_t *old_dt); +static H5T_t *H5T__copy_all(H5T_t *old_dt); +static herr_t H5T__complete_copy(H5T_t *new_dt, const H5T_t *old_dt, + H5T_shared_t *reopened_fo, hbool_t set_memory_type, H5T_copy_func_t copyfn); /*****************************/ @@ -3303,132 +3311,152 @@ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5T__create() */ - + /*------------------------------------------------------------------------- - * Function: H5T_copy + * Function: H5T__initiate_copy * - * Purpose: Copies datatype OLD_DT. The resulting data type is not - * locked and is a transient type. + * Purpose: Allocates datatype structures, copies core fields, and initializes + * VOL fields. * * Return: Success: Pointer to a new copy of the OLD_DT argument. - * * Failure: NULL * - * Programmer: Robb Matzke - * Thursday, December 4, 1997 + * Note: Common code for both H5T_copy and H5T_copy_reopen, as part of + * the const-correct datatype copying routines. + * + * Programmer: David Young + * January 18, 2020 * *------------------------------------------------------------------------- */ -H5T_t * -H5T_copy(H5T_t *old_dt, H5T_copy_t method) +static H5T_t * +H5T__initiate_copy(const H5T_t *old_dt) { - H5T_t *new_dt = NULL, *tmp = NULL; - H5T_shared_t *reopened_fo = NULL; - unsigned i; - char *s; - H5T_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI(NULL) + H5T_t *new_dt = NULL; /* Copy of datatype */ + H5T_t *ret_value = NULL; /* Return value */ - /* check args */ - HDassert(old_dt); + FUNC_ENTER_STATIC /* Allocate space */ if(NULL == (new_dt = H5FL_MALLOC(H5T_t))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTALLOC, NULL, "H5T_t memory allocation failed") if(NULL == (new_dt->shared = H5FL_MALLOC(H5T_shared_t))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTALLOC, NULL, "H5T_shared_t memory allocation failed") - /* Copy shared information (entry information is copied last) */ + /* Copy shared information */ *(new_dt->shared) = *(old_dt->shared); - /* No VOL object */ + /* Reset VOL fields */ new_dt->vol_obj = NULL; - - /* No owned VOL object */ new_dt->shared->owned_vol_obj = NULL; - /* Check what sort of copy we are making */ - switch (method) { - case H5T_COPY_TRANSIENT: - /* - * Return an unlocked transient type. - */ - new_dt->shared->state = H5T_STATE_TRANSIENT; - break; + /* Set return value */ + ret_value = new_dt; - case H5T_COPY_ALL: - /* - * Return a transient type (locked or unlocked) or an unopened named - * type. Immutable transient types are degraded to read-only. - */ - if(H5T_STATE_OPEN==old_dt->shared->state) - new_dt->shared->state = H5T_STATE_NAMED; - else if(H5T_STATE_IMMUTABLE==old_dt->shared->state) - new_dt->shared->state = H5T_STATE_RDONLY; - break; +done: + if(ret_value == NULL) + if(new_dt) { + if(new_dt->shared) + new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); + new_dt = H5FL_FREE(H5T_t, new_dt); + } /* end if */ - case H5T_COPY_REOPEN: - /* - * Return a transient type (locked or unlocked) or an opened named - * type. Immutable transient types are degraded to read-only. - */ - if(old_dt->sh_loc.type == H5O_SHARE_TYPE_COMMITTED) { - /* Check if the object is already open */ - if(NULL == (reopened_fo = (H5T_shared_t *)H5FO_opened(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr))) { - /* Clear any errors from H5FO_opened() */ - H5E_clear_stack(NULL); + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5T__initiate_copy() */ - /* Open named datatype again */ - if(H5O_open(&old_dt->oloc) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to reopen named data type") + +/*------------------------------------------------------------------------- + * Function: H5T__copy_transient + * + * Purpose: Part of recursive framework for const-correct datatype copying. + * + * Return: Success: Pointer to a new copy of the OLD_DT argument. + * Failure: NULL + * + * Programmer: David Young + * January 18, 2020 + * + *------------------------------------------------------------------------- + */ +static H5T_t * +H5T__copy_transient(H5T_t *old_dt) +{ + H5T_t *ret_value = NULL; /* Return value */ - /* Insert opened named datatype into opened object list for the file */ - if(H5FO_insert(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr, new_dt->shared, FALSE)<0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINSERT, NULL, "can't insert datatype into list of open objects") + FUNC_ENTER_STATIC - /* Increment object count for the object in the top file */ - if(H5FO_top_incr(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count") + /* Copy datatype, with correct method */ + if(NULL == (ret_value = H5T_copy(old_dt, H5T_COPY_TRANSIENT))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't make 'transient' copy of datatype") - new_dt->shared->fo_count = 1; - } /* end if */ - else { - /* The object is already open. Free the H5T_shared_t struct - * we had been using and use the one that already exists. - * Not terribly efficient. */ - new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); - new_dt->shared = reopened_fo; - - reopened_fo->fo_count++; - - /* Check if the object has been opened through the top file yet */ - if(H5FO_top_count(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) == 0) { - /* Open the object through this top file */ - if(H5O_open(&old_dt->oloc) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to open object header") - } /* end if */ +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5T__copy_transient() */ - /* Increment object count for the object in the top file */ - if(H5FO_top_incr(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count") - } /* end else */ - new_dt->shared->state = H5T_STATE_OPEN; - } - else if(H5T_STATE_IMMUTABLE == old_dt->shared->state) { - new_dt->shared->state = H5T_STATE_RDONLY; - } - break; - default: - HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, NULL, "invalid copy method type") - } /* end switch */ + +/*------------------------------------------------------------------------- + * Function: H5T__copy_all + * + * Purpose: Part of recursive framework for const-correct datatype copying. + * + * Return: Success: Pointer to a new copy of the OLD_DT argument. + * Failure: NULL + * + * Programmer: David Young + * January 18, 2020 + * + *------------------------------------------------------------------------- + */ +static H5T_t * +H5T__copy_all(H5T_t *old_dt) +{ + H5T_t *ret_value = NULL; /* Return value */ + + FUNC_ENTER_STATIC + + /* Copy datatype, with correct method */ + if(NULL == (ret_value = H5T_copy(old_dt, H5T_COPY_ALL))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't make 'all' copy of datatype") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5T__copy_transient() */ + + +/*------------------------------------------------------------------------- + * Function: H5T__complete_copy + * + * Purpose: Completes copying datatype fields, as part of the recursive + * const-correct datatype copy routines. + * + * Return: Success: non-negative + * Failure: negative + * + * Note: Common code for both H5T_copy and H5T_copy_reopen. + * + * Programmer: David Young + * January 18, 2020 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5T__complete_copy(H5T_t *new_dt, const H5T_t *old_dt, H5T_shared_t *reopened_fo, + hbool_t set_memory_type, H5T_copy_func_t copyfn) +{ + H5T_t *tmp = NULL; /* Temporary copy of compound field's datatype */ + char *s; /* Temporary copy of compound field name / enum value name */ + unsigned i; /* Local index variable */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC /* Update fields in the new struct, if we aren't sharing an already opened * committed datatype */ if(!reopened_fo) { /* Copy parent information */ if(old_dt->shared->parent) - new_dt->shared->parent = H5T_copy(old_dt->shared->parent, method); + if(NULL == (new_dt->shared->parent = (*copyfn)(old_dt->shared->parent))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy datatype's parent type") switch(new_dt->shared->type) { case H5T_COMPOUND: @@ -3442,10 +3470,8 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) */ /* Only malloc if space has been allocated for members - NAF */ if(new_dt->shared->u.compnd.nalloc > 0) { - new_dt->shared->u.compnd.memb = - (H5T_cmemb_t *)H5MM_malloc(new_dt->shared->u.compnd.nalloc * sizeof(H5T_cmemb_t)); - if (NULL == new_dt->shared->u.compnd.memb) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + if(NULL == (new_dt->shared->u.compnd.memb = H5MM_malloc(new_dt->shared->u.compnd.nalloc * sizeof(H5T_cmemb_t)))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTALLOC, FAIL, "memory allocation failed") H5MM_memcpy(new_dt->shared->u.compnd.memb, old_dt->shared->u.compnd.memb, new_dt->shared->u.compnd.nmembs * sizeof(H5T_cmemb_t)); @@ -3455,15 +3481,17 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) unsigned j; int old_match; - s = new_dt->shared->u.compnd.memb[i].name; - new_dt->shared->u.compnd.memb[i].name = H5MM_xstrdup(s); - tmp = H5T_copy (old_dt->shared->u.compnd.memb[i].type, method); + if(NULL == (s = H5MM_xstrdup(new_dt->shared->u.compnd.memb[i].name))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy string for compound field's name") + new_dt->shared->u.compnd.memb[i].name = s; + if(NULL == (tmp = (*copyfn)(old_dt->shared->u.compnd.memb[i].type))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy compound field's datatype") new_dt->shared->u.compnd.memb[i].type = tmp; HDassert(tmp != NULL); /* Range check against compound member's offset */ - if ((accum_change < 0) && ((ssize_t) new_dt->shared->u.compnd.memb[i].offset < accum_change)) - HGOTO_ERROR(H5E_DATATYPE, H5E_BADVALUE, NULL, "invalid field size in datatype") + if((accum_change < 0) && ((ssize_t) new_dt->shared->u.compnd.memb[i].offset < accum_change)) + HGOTO_ERROR(H5E_DATATYPE, H5E_BADVALUE, FAIL, "invalid field size in datatype") /* Apply the accumulated size change to the offset of the field */ new_dt->shared->u.compnd.memb[i].offset += (size_t) accum_change; @@ -3478,7 +3506,7 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) /* check if we couldn't find a match */ if(old_match < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "fields in datatype corrupted") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "fields in datatype corrupted") } /* end if */ else old_match = (int) i; @@ -3493,8 +3521,8 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) } /* end for */ /* Range check against datatype size */ - if ((accum_change < 0) && ((ssize_t) new_dt->shared->size < accum_change)) - HGOTO_ERROR(H5E_DATATYPE, H5E_BADVALUE, NULL, "invalid field size in datatype") + if((accum_change < 0) && ((ssize_t) new_dt->shared->size < accum_change)) + HGOTO_ERROR(H5E_DATATYPE, H5E_BADVALUE, FAIL, "invalid field size in datatype") /* Apply the accumulated size change to the size of the compound struct */ new_dt->shared->size += (size_t) accum_change; @@ -3507,27 +3535,25 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) * of each new member with copied values. That is, H5T_copy() is a * deep copy. */ - new_dt->shared->u.enumer.name = - (char **)H5MM_malloc(new_dt->shared->u.enumer.nalloc * sizeof(char*)); - new_dt->shared->u.enumer.value = - (uint8_t *)H5MM_malloc(new_dt->shared->u.enumer.nalloc * new_dt->shared->size); - if(NULL == new_dt->shared->u.enumer.value) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + if(NULL == (new_dt->shared->u.enumer.name = H5MM_malloc(new_dt->shared->u.enumer.nalloc * sizeof(char*)))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTALLOC, FAIL, "enam name array memory allocation failed") + if(NULL == (new_dt->shared->u.enumer.value = H5MM_malloc(new_dt->shared->u.enumer.nalloc * new_dt->shared->size))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTALLOC, FAIL, "enam value array memory allocation failed") H5MM_memcpy(new_dt->shared->u.enumer.value, old_dt->shared->u.enumer.value, new_dt->shared->u.enumer.nmembs * new_dt->shared->size); for(i = 0; i < new_dt->shared->u.enumer.nmembs; i++) { - s = old_dt->shared->u.enumer.name[i]; - new_dt->shared->u.enumer.name[i] = H5MM_xstrdup(s); + if(NULL == (s = H5MM_xstrdup(old_dt->shared->u.enumer.name[i]))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy string for enum value's name") + new_dt->shared->u.enumer.name[i] = s; } /* end for */ break; case H5T_VLEN: case H5T_REFERENCE: - if(method == H5T_COPY_TRANSIENT || method == H5T_COPY_REOPEN) { + if(set_memory_type) /* H5T_copy converts any type into a memory type */ if(H5T_set_loc(new_dt, NULL, H5T_LOC_MEMORY) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "invalid datatype location") - } /* end if */ + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location") break; case H5T_OPAQUE: @@ -3539,7 +3565,7 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) case H5T_ARRAY: /* Re-compute the array's size, in case it's base type changed size */ - new_dt->shared->size=new_dt->shared->u.array.nelem*new_dt->shared->parent->shared->size; + new_dt->shared->size = new_dt->shared->u.array.nelem * new_dt->shared->parent->shared->size; break; case H5T_NO_CLASS: @@ -3558,15 +3584,15 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) * type and the new type is also named. */ if(H5O_loc_reset(&new_dt->oloc) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to initialize location") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, FAIL, "unable to initialize location") if(H5G_name_reset(&new_dt->path) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to reset path") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, FAIL, "unable to reset path") if(new_dt->shared->state == H5T_STATE_NAMED || new_dt->shared->state == H5T_STATE_OPEN) { - if(H5O_loc_copy(&(new_dt->oloc), &(old_dt->oloc), H5_COPY_DEEP) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy object location") + if(H5O_loc_copy_deep(&(new_dt->oloc), &(old_dt->oloc)) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy object location") if(H5G_name_copy(&(new_dt->path), &(old_dt->path), H5_COPY_DEEP) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to copy path") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, FAIL, "unable to copy path") } /* end if */ /* Copy shared location information if the new type is named or if it is @@ -3575,28 +3601,194 @@ H5T_copy(H5T_t *old_dt, H5T_copy_t method) if((old_dt->sh_loc.type == H5O_SHARE_TYPE_SOHM || old_dt->sh_loc.type == H5O_SHARE_TYPE_HERE) || new_dt->shared->state == H5T_STATE_NAMED || new_dt->shared->state == H5T_STATE_OPEN) { if(H5O_set_shared(&(new_dt->sh_loc), &(old_dt->sh_loc)) < 0) - HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy shared information") + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy shared information") } /* end if */ else /* Reset shared component info */ H5O_msg_reset_share(H5O_DTYPE_ID, new_dt); +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5T__complete_copy() */ + + +/*------------------------------------------------------------------------- + * Function: H5T_copy + * + * Purpose: Copies datatype OLD_DT. The resulting data type is not + * locked and is a transient type. + * + * Return: Success: Pointer to a new copy of the OLD_DT argument. + * Failure: NULL + * + * Programmer: Robb Matzke + * Thursday, December 4, 1997 + * + *------------------------------------------------------------------------- + */ +H5T_t * +H5T_copy(const H5T_t *old_dt, H5T_copy_t method) +{ + H5T_t *new_dt = NULL; /* New datatype */ + H5T_copy_func_t copyfn; /* Pointer to correct copy routine */ + H5T_t *ret_value = NULL; /* Return value */ + + FUNC_ENTER_NOAPI(NULL) + + /* check args */ + HDassert(old_dt); + + /* Allocate and copy core datatype information */ + if(NULL == (new_dt = H5T__initiate_copy(old_dt))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy core datatype info") + + /* Check what sort of copy we are making */ + switch (method) { + case H5T_COPY_TRANSIENT: + /* + * Return an unlocked transient type. + */ + new_dt->shared->state = H5T_STATE_TRANSIENT; + copyfn = H5T__copy_transient; + break; + + case H5T_COPY_ALL: + /* + * Return a transient type (locked or unlocked) or an unopened named + * type. Immutable transient types are degraded to read-only. + */ + if(H5T_STATE_OPEN==old_dt->shared->state) + new_dt->shared->state = H5T_STATE_NAMED; + else if(H5T_STATE_IMMUTABLE==old_dt->shared->state) + new_dt->shared->state = H5T_STATE_RDONLY; + copyfn = H5T__copy_all; + break; + + default: + HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, NULL, "invalid copy method type") + } /* end switch */ + + /* Finish making the copy of the datatype */ + if(H5T__complete_copy(new_dt, old_dt, NULL, (method == H5T_COPY_TRANSIENT), copyfn) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "can't complete datatype initialization") + /* Set return value */ ret_value = new_dt; done: - if(ret_value == NULL) { + if(ret_value == NULL) if(new_dt) { - if(new_dt->shared) - new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); + HDassert(new_dt->shared); + new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); new_dt = H5FL_FREE(H5T_t, new_dt); } /* end if */ - } /* end if */ FUNC_LEAVE_NOAPI(ret_value) } /* end H5T_copy() */ + +/*------------------------------------------------------------------------- + * Function: H5T_copy_reopen + * + * Purpose: Copy a datatype, possibly reopening a named datatype, as part + * the const-correct datatype copying routines. + * + * Return: Success: Pointer to a new copy of the OLD_DT argument. + * Failure: NULL + * + * Programmer: David Young + * January 18, 2020 + * + *------------------------------------------------------------------------- + */ +H5T_t * +H5T_copy_reopen(H5T_t *old_dt) +{ + H5T_t *new_dt = NULL; /* New datatype */ + H5T_shared_t *reopened_fo = NULL; /* Pointer to reopened existing named datatype */ + H5T_t *ret_value = NULL; /* Return value */ + + FUNC_ENTER_NOAPI(NULL) + + /* check args */ + HDassert(old_dt); + + /* Allocate and copy core datatype information */ + if(NULL == (new_dt = H5T__initiate_copy(old_dt))) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy core datatype info") + + /* + * Return a transient type (locked or unlocked) or an opened named + * type. Immutable transient types are degraded to read-only. + */ + if(old_dt->sh_loc.type == H5O_SHARE_TYPE_COMMITTED) { + /* Check if the object is already open */ + if(NULL == (reopened_fo = (H5T_shared_t *)H5FO_opened(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr))) { + /* Clear any errors from H5FO_opened() */ + H5E_clear_stack(NULL); + + /* Open named datatype again */ + if(H5O_open(&old_dt->oloc) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to reopen named data type") + + /* Insert opened named datatype into opened object list for the file */ + if(H5FO_insert(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr, new_dt->shared, FALSE)<0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINSERT, NULL, "can't insert datatype into list of open objects") + + /* Increment object count for the object in the top file */ + if(H5FO_top_incr(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count") + + new_dt->shared->fo_count = 1; + } /* end if */ + else { + /* The object is already open. Free the H5T_shared_t struct + * we had been using and use the one that already exists. + * Not terribly efficient. */ + new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); + new_dt->shared = reopened_fo; + + reopened_fo->fo_count++; + + /* Check if the object has been opened through the top file yet */ + if(H5FO_top_count(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) == 0) { + /* Open the object through this top file */ + if(H5O_open(&old_dt->oloc) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to open object header") + } /* end if */ + + /* Increment object count for the object in the top file */ + if(H5FO_top_incr(old_dt->sh_loc.file, old_dt->sh_loc.u.loc.oh_addr) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count") + } /* end else */ + + /* Set state for new datatype */ + new_dt->shared->state = H5T_STATE_OPEN; + } /* end if */ + else + /* Downgrade immutable datatypes to read-only */ + if(H5T_STATE_IMMUTABLE == old_dt->shared->state) + new_dt->shared->state = H5T_STATE_RDONLY; + + /* Finish making the copy of the datatype */ + if(H5T__complete_copy(new_dt, old_dt, reopened_fo, TRUE, H5T_copy_reopen) < 0) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "can't complete datatype initialization") + + /* Set return value */ + ret_value = new_dt; + +done: + if(ret_value == NULL) + if(new_dt) { + HDassert(new_dt->shared); + new_dt->shared = H5FL_FREE(H5T_shared_t, new_dt->shared); + new_dt = H5FL_FREE(H5T_t, new_dt); + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5T_copy_reopen() */ + /*------------------------------------------------------------------------- * Function: H5T_lock * |