diff options
Diffstat (limited to 'src/H5AC.c')
| -rw-r--r-- | src/H5AC.c | 2256 |
1 files changed, 0 insertions, 2256 deletions
@@ -44,13 +44,10 @@ #include "H5private.h" /* Generic Functions */ #include "H5ACpkg.h" /* Metadata cache */ #include "H5Cpkg.h" /* Cache */ -#include "H5Dprivate.h" /* Dataset functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* Files */ #include "H5FDprivate.h" /* File drivers */ -#include "H5FLprivate.h" /* Free Lists */ #include "H5Iprivate.h" /* IDs */ -#include "H5MMprivate.h" /* Memory management */ #include "H5Pprivate.h" /* Property lists */ @@ -63,38 +60,6 @@ /* Local Typedefs */ /******************/ -#ifdef H5_HAVE_PARALLEL -/**************************************************************************** - * - * structure H5AC_slist_entry_t - * - * The dirty entry list maintained via the d_slist_ptr field of H5AC_aux_t - * and the cleaned entry list maintained via the c_slist_ptr field of - * H5AC_aux_t are just lists of the file offsets of the dirty/cleaned - * entries. Unfortunately, the slist code makes us define a dynamically - * allocated structure to store these offsets in. This structure serves - * that purpose. Its fields are as follows: - * - * addr: file offset of a metadata entry. Entries are added to this - * list (if they aren't there already) when they are marked - * dirty in an unprotect, inserted, or moved. They are - * removed when they appear in a clean entries broadcast. - * - ****************************************************************************/ -typedef struct H5AC_slist_entry_t -{ - haddr_t addr; -} H5AC_slist_entry_t; - -/* User data for address list building callbacks */ -typedef struct H5AC_addr_list_ud_t -{ - H5AC_aux_t * aux_ptr; /* 'Auxiliary' parallel cache info */ - haddr_t * addr_buf_ptr; /* Array to store addresses */ - int i; /* Counter for position in array */ -} H5AC_addr_list_ud_t; -#endif /* H5_HAVE_PARALLEL */ - /********************/ /* Local Prototypes */ @@ -105,39 +70,6 @@ static herr_t H5AC__check_if_write_permitted(const H5F_t *f, static herr_t H5AC__ext_config_2_int_config(H5AC_cache_config_t *ext_conf_ptr, H5C_auto_size_ctl_t *int_conf_ptr); -#ifdef H5_HAVE_PARALLEL -static herr_t H5AC__broadcast_candidate_list(H5AC_t *cache_ptr, - int *num_entries_ptr, haddr_t **haddr_buf_ptr_ptr); -static herr_t H5AC__broadcast_clean_list(H5AC_t *cache_ptr); -static herr_t H5AC__construct_candidate_list(H5AC_t *cache_ptr, - H5AC_aux_t *aux_ptr, int sync_point_op); -static herr_t H5AC__copy_candidate_list_to_buffer(const H5AC_t *cache_ptr, - int *num_entries_ptr, haddr_t **haddr_buf_ptr_ptr); -static herr_t H5AC__flush_entries(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__log_deleted_entry(const H5AC_info_t *entry_ptr); -static herr_t H5AC__log_dirtied_entry(const H5AC_info_t *entry_ptr); -static herr_t H5AC__log_flushed_entry(H5C_t *cache_ptr, haddr_t addr, - hbool_t was_dirty, unsigned flags); -static herr_t H5AC__log_inserted_entry(const H5AC_info_t *entry_ptr); -static herr_t H5AC__log_moved_entry(const H5F_t *f, haddr_t old_addr, - haddr_t new_addr); -static herr_t H5AC__propagate_and_apply_candidate_list(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__propagate_flushed_and_still_clean_entries_list(H5F_t *f, - hid_t dxpl_id); -static herr_t H5AC__receive_haddr_list(MPI_Comm mpi_comm, int *num_entries_ptr, - haddr_t **haddr_buf_ptr_ptr); -static herr_t H5AC__receive_candidate_list(const H5AC_t *cache_ptr, - int *num_entries_ptr, haddr_t **haddr_buf_ptr_ptr); -static herr_t H5AC__receive_and_apply_clean_list(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__tidy_cache_0_lists(H5AC_t *cache_ptr, int num_candidates, - haddr_t *candidates_list_ptr); -static herr_t H5AC__rsp__dist_md_write__flush(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__rsp__dist_md_write__flush_to_min_clean(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__rsp__p0_only__flush(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__rsp__p0_only__flush_to_min_clean(H5F_t *f, hid_t dxpl_id); -static herr_t H5AC__run_sync_point(H5F_t *f, hid_t dxpl_id, int sync_point_op); -#endif /* H5_HAVE_PARALLEL */ - /*********************/ /* Package Variables */ @@ -164,14 +96,6 @@ hid_t H5AC_ind_dxpl_id = (-1); /* Local Variables */ /*******************/ -#ifdef H5_HAVE_PARALLEL -/* Declare a free list to manage the H5AC_aux_t struct */ -H5FL_DEFINE_STATIC(H5AC_aux_t); - -/* Declare a free list to manage the H5AC_slist_entry_t struct */ -H5FL_DEFINE_STATIC(H5AC_slist_entry_t); -#endif /* H5_HAVE_PARALLEL */ - static const char *H5AC_entry_type_names[H5AC_NTYPES] = { "B-tree nodes", @@ -1490,78 +1414,6 @@ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5AC_unprotect() */ - -/*------------------------------------------------------------------------- - * Function: HA5C_set_sync_point_done_callback - * - * Purpose: Set the value of the sync_point_done callback. This - * callback is used by the parallel test code to verify - * that the expected writes and only the expected writes - * take place during a sync point. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 5/9/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -herr_t -H5AC_set_sync_point_done_callback(H5C_t * cache_ptr, - void (* sync_point_done)(int num_writes, haddr_t * written_entries_tbl)) -{ - H5AC_aux_t * aux_ptr; - - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Sanity checks */ - HDassert(cache_ptr && (cache_ptr->magic == H5C__H5C_T_MAGIC)); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - - aux_ptr->sync_point_done = sync_point_done; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC_set_sync_point_done_callback() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: HA5C_set_write_done_callback - * - * Purpose: Set the value of the write_done callback. This callback - * is used to improve performance of the parallel test bed - * for the cache. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 5/11/06 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -herr_t -H5AC_set_write_done_callback(H5C_t * cache_ptr, void (* write_done)(void)) -{ - H5AC_aux_t * aux_ptr; - - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Sanity checks */ - HDassert(cache_ptr && (cache_ptr->magic == H5C__H5C_T_MAGIC)); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert( aux_ptr != NULL ); - HDassert( aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC ); - - aux_ptr->write_done = write_done; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC_set_write_done_callback() */ -#endif /* H5_HAVE_PARALLEL */ - #ifndef NDEBUG /* debugging functions */ /*------------------------------------------------------------------------- @@ -2119,64 +1971,6 @@ done: } /* H5AC_open_trace_file() */ -/*------------------------------------------------------------------------- - * Function: H5AC_add_candidate() - * - * Purpose: Add the supplied metadata entry address to the candidate - * list. Verify that each entry added does not appear in - * the list prior to its insertion. - * - * This function is intended for used in constructing list - * of entried to be flushed during sync points. It shouldn't - * be called anywhere else. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 3/17/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -herr_t -H5AC_add_candidate(H5AC_t * cache_ptr, haddr_t addr) -{ - H5AC_aux_t * aux_ptr; - H5AC_slist_entry_t * slist_entry_ptr = NULL; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert(aux_ptr->candidate_slist_ptr != NULL); - - /* Construct an entry for the supplied address, and insert - * it into the candidate slist. - */ - if(NULL == (slist_entry_ptr = H5FL_MALLOC(H5AC_slist_entry_t))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "Can't allocate candidate slist entry") - slist_entry_ptr->addr = addr; - - if(H5SL_insert(aux_ptr->candidate_slist_ptr, slist_entry_ptr, &(slist_entry_ptr->addr)) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTINSERT, FAIL, "can't insert entry into dirty entry slist") - -done: - /* Clean up on error */ - if(ret_value < 0) - if(slist_entry_ptr) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC_add_candidate() */ -#endif /* H5_HAVE_PARALLEL */ - - /*************************************************************************/ /*************************** Debugging Functions: ************************/ /*************************************************************************/ @@ -2288,236 +2082,6 @@ done: /**************************** Private Functions: *************************/ /*************************************************************************/ -/*------------------------------------------------------------------------- - * - * Function: H5AC__broadcast_candidate_list() - * - * Purpose: Broadcast the contents of the process 0 candidate entry - * slist. In passing, also remove all entries from said - * list. As the application of this will be handled by - * the same functions on all processes, construct and - * return a copy of the list in the same format as that - * received by the other processes. Note that if this - * copy is returned in *haddr_buf_ptr_ptr, the caller - * must free it. - * - * This function must only be called by the process with - * MPI_rank 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 7/1/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__broadcast_candidate_list(H5AC_t *cache_ptr, int *num_entries_ptr, - haddr_t **haddr_buf_ptr_ptr) -{ - H5AC_aux_t * aux_ptr = NULL; - haddr_t * haddr_buf_ptr = NULL; - int mpi_result; - int num_entries; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank == 0); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert(aux_ptr->candidate_slist_ptr != NULL); - HDassert(num_entries_ptr != NULL); - HDassert(*num_entries_ptr == 0); - HDassert(haddr_buf_ptr_ptr != NULL); - HDassert(*haddr_buf_ptr_ptr == NULL); - - /* First broadcast the number of entries in the list so that the - * receivers can set up buffers to receive them. If there aren't - * any, we are done. - */ - num_entries = (int)H5SL_count(aux_ptr->candidate_slist_ptr); - if(MPI_SUCCESS != (mpi_result = MPI_Bcast(&num_entries, 1, MPI_INT, 0, aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - - if(num_entries > 0) { - size_t buf_size = 0; - int chk_num_entries = 0; - - /* convert the candidate list into the format we - * are used to receiving from process 0, and also load it - * into a buffer for transmission. - */ - if(H5AC__copy_candidate_list_to_buffer(cache_ptr, &chk_num_entries, &haddr_buf_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't construct candidate buffer.") - HDassert(chk_num_entries == num_entries); - HDassert(haddr_buf_ptr != NULL); - - /* Now broadcast the list of candidate entries */ - buf_size = sizeof(haddr_t) * (size_t)num_entries; - if(MPI_SUCCESS != (mpi_result = MPI_Bcast((void *)haddr_buf_ptr, (int)buf_size, MPI_BYTE, 0, aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - } /* end if */ - - /* Pass the number of entries and the buffer pointer - * back to the caller. Do this so that we can use the same code - * to apply the candidate list to all the processes. - */ - *num_entries_ptr = num_entries; - *haddr_buf_ptr_ptr = haddr_buf_ptr; - -done: - if(ret_value < 0) - if(haddr_buf_ptr) - haddr_buf_ptr = (haddr_t *)H5MM_xfree((void *)haddr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__broadcast_candidate_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__broadcast_clean_list_cb() - * - * Purpose: Skip list callback for building array of addresses for - * broadcasting the clean list. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: Quincey Koziol, 6/12/15 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__broadcast_clean_list_cb(void *_item, void H5_ATTR_UNUSED *_key, - void *_udata) -{ - H5AC_slist_entry_t * slist_entry_ptr = (H5AC_slist_entry_t *)_item; /* Address of item */ - H5AC_addr_list_ud_t * udata = (H5AC_addr_list_ud_t *)_udata; /* Context for callback */ - haddr_t addr; - - FUNC_ENTER_STATIC_NOERR - - /* Sanity checks */ - HDassert(slist_entry_ptr); - HDassert(udata); - - /* Store the entry's address in the buffer */ - addr = slist_entry_ptr->addr; - udata->addr_buf_ptr[udata->i] = addr; - udata->i++; - - /* now release the entry */ - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - /* and also remove the matching entry from the dirtied list - * if it exists. - */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(udata->aux_ptr->d_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC__broadcast_clean_list_cb() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__broadcast_clean_list() - * - * Purpose: Broadcast the contents of the process 0 cleaned entry - * slist. In passing, also remove all entries from said - * list, and also remove any matching entries from the dirtied - * slist. - * - * This function must only be called by the process with - * MPI_rank 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 7/1/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__broadcast_clean_list(H5AC_t * cache_ptr) -{ - haddr_t * addr_buf_ptr = NULL; - H5AC_aux_t * aux_ptr; - int mpi_result; - int num_entries = 0; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)cache_ptr->aux_ptr; - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank == 0); - HDassert(aux_ptr->c_slist_ptr != NULL); - - /* First broadcast the number of entries in the list so that the - * receives can set up a buffer to receive them. If there aren't - * any, we are done. - */ - num_entries = (int)H5SL_count(aux_ptr->c_slist_ptr); - if(MPI_SUCCESS != (mpi_result = MPI_Bcast(&num_entries, 1, MPI_INT, 0, aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - - if(num_entries > 0) { - H5AC_addr_list_ud_t udata; - size_t buf_size; - - /* allocate a buffer to store the list of entry base addresses in */ - buf_size = sizeof(haddr_t) * (size_t)num_entries; - if(NULL == (addr_buf_ptr = (haddr_t *)H5MM_malloc(buf_size))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "memory allocation failed for addr buffer") - - /* Set up user data for callback */ - udata.aux_ptr = aux_ptr; - udata.addr_buf_ptr = addr_buf_ptr; - udata.i = 0; - - /* Free all the clean list entries, building the address list in the callback */ - /* (Callback also removes the matching entries from the dirtied list) */ - if(H5SL_free(aux_ptr->c_slist_ptr, H5AC__broadcast_clean_list_cb, &udata) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFREE, FAIL, "Can't build address list for clean entries") - - /* Now broadcast the list of cleaned entries */ - if(MPI_SUCCESS != (mpi_result = MPI_Bcast((void *)addr_buf_ptr, (int)buf_size, MPI_BYTE, 0, aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - } /* end if */ - - /* if it is defined, call the sync point done callback. Note - * that this callback is defined purely for testing purposes, - * and should be undefined under normal operating circumstances. - */ - if(aux_ptr->sync_point_done) - (aux_ptr->sync_point_done)(num_entries, addr_buf_ptr); - -done: - if(addr_buf_ptr) - addr_buf_ptr = (haddr_t *)H5MM_xfree((void *)addr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__broadcast_clean_list() */ -#endif /* H5_HAVE_PARALLEL */ - /*------------------------------------------------------------------------- * @@ -2575,202 +2139,6 @@ H5_ATTR_UNUSED /*------------------------------------------------------------------------- - * Function: H5AC__construct_candidate_list() - * - * Purpose: In the parallel case when the metadata_write_strategy is - * H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED, process 0 uses - * this function to construct the list of cache entries to - * be flushed. This list is then propagated to the other - * caches, and then flushed in a distributed fashion. - * - * The sync_point_op parameter is used to determine the extent - * of the flush. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 3/17/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__construct_candidate_list(H5AC_t *cache_ptr, H5AC_aux_t *aux_ptr, - int sync_point_op) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert((sync_point_op == H5AC_SYNC_POINT_OP__FLUSH_CACHE) || (aux_ptr->mpi_rank == 0)); - HDassert(aux_ptr->d_slist_ptr != NULL); - HDassert(aux_ptr->c_slist_ptr != NULL); - HDassert(H5SL_count(aux_ptr->c_slist_ptr) == 0); - HDassert(aux_ptr->candidate_slist_ptr != NULL); - HDassert(H5SL_count(aux_ptr->candidate_slist_ptr) == 0); - HDassert((sync_point_op == H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN) || (sync_point_op == H5AC_SYNC_POINT_OP__FLUSH_CACHE)); - - switch(sync_point_op) { - case H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN: - if(H5C_construct_candidate_list__min_clean((H5C_t *)cache_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "H5C_construct_candidate_list__min_clean() failed.") - break; - - case H5AC_SYNC_POINT_OP__FLUSH_CACHE: - if(H5C_construct_candidate_list__clean_cache((H5C_t *)cache_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "H5C_construct_candidate_list__clean_cache() failed.") - break; - - default: - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "unknown sync point operation.") - break; - } /* end switch */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__construct_candidate_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__copy_candidate_list_to_buffer_cb - * - * Purpose: Skip list callback for building array of addresses for - * broadcasting the candidate list. - * - * Return: Return SUCCEED on success, and FAIL on failure. - * - * Programmer: Quincey Koziol, 6/12/15 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__copy_candidate_list_to_buffer_cb(void *_item, void H5_ATTR_UNUSED *_key, - void *_udata) -{ - H5AC_slist_entry_t * slist_entry_ptr = (H5AC_slist_entry_t *)_item; /* Address of item */ - H5AC_addr_list_ud_t * udata = (H5AC_addr_list_ud_t *)_udata; /* Context for callback */ - - FUNC_ENTER_STATIC_NOERR - - /* Sanity checks */ - HDassert(slist_entry_ptr); - HDassert(udata); - - /* Store the entry's address in the buffer */ - udata->addr_buf_ptr[udata->i] = slist_entry_ptr->addr; - udata->i++; - - /* now release the entry */ - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC__copy_candidate_list_to_buffer_cb() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__copy_candidate_list_to_buffer - * - * Purpose: Allocate buffer(s) and copy the contents of the candidate - * entry slist into it (them). In passing, remove all - * entries from the candidate slist. Note that the - * candidate slist must not be empty. - * - * If MPI_Offset_buf_ptr_ptr is not NULL, allocate a buffer - * of MPI_Offset, copy the contents of the candidate - * entry list into it with the appropriate conversions, - * and return the base address of the buffer in - * *MPI_Offset_buf_ptr. Note that this is the buffer - * used by process 0 to transmit the list of entries to - * be flushed to all other processes (in this file group). - * - * Similarly, allocate a buffer of haddr_t, load the contents - * of the candidate list into this buffer, and return its - * base address in *haddr_buf_ptr_ptr. Note that this - * latter buffer is constructed unconditionally. - * - * In passing, also remove all entries from the candidate - * entry slist. - * - * Return: Return SUCCEED on success, and FAIL on failure. - * - * Programmer: John Mainzer, 4/19/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__copy_candidate_list_to_buffer(const H5AC_t *cache_ptr, int *num_entries_ptr, - haddr_t **haddr_buf_ptr_ptr) -{ - H5AC_aux_t * aux_ptr = NULL; - H5AC_addr_list_ud_t udata; - haddr_t * haddr_buf_ptr = NULL; - size_t buf_size; - int num_entries = 0; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert(aux_ptr->candidate_slist_ptr != NULL); - HDassert(H5SL_count(aux_ptr->candidate_slist_ptr) > 0); - HDassert(num_entries_ptr != NULL); - HDassert(*num_entries_ptr == 0); - HDassert(haddr_buf_ptr_ptr != NULL); - HDassert(*haddr_buf_ptr_ptr == NULL); - - num_entries = (int)H5SL_count(aux_ptr->candidate_slist_ptr); - - /* allocate a buffer(s) to store the list of candidate entry - * base addresses in - */ - buf_size = sizeof(haddr_t) * (size_t)num_entries; - if(NULL == (haddr_buf_ptr = (haddr_t *)H5MM_malloc(buf_size))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "memory allocation failed for haddr buffer") - - /* Set up user data for callback */ - udata.aux_ptr = aux_ptr; - udata.addr_buf_ptr = haddr_buf_ptr; - udata.i = 0; - - /* Free all the candidate list entries, building the address list in the callback */ - if(H5SL_free(aux_ptr->candidate_slist_ptr, H5AC__copy_candidate_list_to_buffer_cb, &udata) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFREE, FAIL, "Can't build address list for candidate entries") - - /* Pass the number of entries and the buffer pointer - * back to the caller. - */ - *num_entries_ptr = num_entries; - *haddr_buf_ptr_ptr = haddr_buf_ptr; - -done: - if(ret_value < 0) - if(haddr_buf_ptr) - haddr_buf_ptr = (haddr_t *)H5MM_xfree((void *)haddr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__copy_candidate_list_to_buffer() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- * Function: H5AC__ext_config_2_int_config() * * Purpose: Utility function to translate an instance of @@ -2836,1630 +2204,6 @@ done: } /* H5AC__ext_config_2_int_config() */ -/*------------------------------------------------------------------------- - * - * Function: H5AC__log_deleted_entry() - * - * Purpose: Log an entry which has been deleted. - * - * Only called for mpi_rank 0. We must make sure that the entry - * doesn't appear in the cleaned or dirty entry lists. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 6/29/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__log_deleted_entry(const H5AC_info_t *entry_ptr) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - H5AC_slist_entry_t * slist_entry_ptr = NULL; - haddr_t addr; - - FUNC_ENTER_STATIC_NOERR - - /* Sanity checks */ - HDassert(entry_ptr); - addr = entry_ptr->addr; - cache_ptr = entry_ptr->cache_ptr; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank == 0); - HDassert(aux_ptr->d_slist_ptr != NULL); - HDassert(aux_ptr->c_slist_ptr != NULL); - - /* if the entry appears in the dirtied entry slist, remove it. */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->d_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - /* if the entry appears in the cleaned entry slist, remove it. */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->c_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC__log_deleted_entry() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__log_dirtied_entry() - * - * Purpose: Update the dirty_bytes count for a newly dirtied entry. - * - * If mpi_rank isn't 0, this simply means adding the size - * of the entries to the dirty_bytes count. - * - * If mpi_rank is 0, we must first check to see if the entry - * appears in the dirty entries slist. If it is, do nothing. - * If it isn't, add the size to th dirty_bytes count, add the - * entry to the dirty entries slist, and remove it from the - * cleaned list (if it is present there). - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 6/29/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__log_dirtied_entry(const H5AC_info_t *entry_ptr) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(entry_ptr); - HDassert(entry_ptr->is_dirty == FALSE); - cache_ptr = entry_ptr->cache_ptr; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - - if(aux_ptr->mpi_rank == 0) { - H5AC_slist_entry_t *slist_entry_ptr; - haddr_t addr = entry_ptr->addr; - - /* Sanity checks */ - HDassert(aux_ptr->d_slist_ptr != NULL); - HDassert(aux_ptr->c_slist_ptr != NULL); - - if(NULL == H5SL_search(aux_ptr->d_slist_ptr, (void *)(&addr))) { - /* insert the address of the entry in the dirty entry list, and - * add its size to the dirty_bytes count. - */ - if(NULL == (slist_entry_ptr = H5FL_MALLOC(H5AC_slist_entry_t))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "Can't allocate dirty slist entry .") - slist_entry_ptr->addr = addr; - - if(H5SL_insert(aux_ptr->d_slist_ptr, slist_entry_ptr, &(slist_entry_ptr->addr)) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTINSERT, FAIL, "can't insert entry into dirty entry slist.") - - aux_ptr->dirty_bytes += entry_ptr->size; -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->unprotect_dirty_bytes += entry_ptr->size; - aux_ptr->unprotect_dirty_bytes_updates += 1; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - } /* end if */ - - /* the entry is dirty. If it exists on the cleaned entries list, - * remove it. - */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->c_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - } /* end if */ - else { - aux_ptr->dirty_bytes += entry_ptr->size; -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->unprotect_dirty_bytes += entry_size; - aux_ptr->unprotect_dirty_bytes_updates += 1; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - } /* end else */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__log_dirtied_entry() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__log_flushed_entry() - * - * Purpose: Update the clean entry slist for the flush of an entry -- - * specifically, if the entry has been cleared, remove it - * from both the cleaned and dirtied lists if it is present. - * Otherwise, if the entry was dirty, insert the indicated - * entry address in the clean slist if it isn't there already. - * - * This function is only used in PHDF5, and should only - * be called for the process with mpi rank 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 6/29/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__log_flushed_entry(H5C_t *cache_ptr, haddr_t addr, hbool_t was_dirty, - unsigned flags) -{ - hbool_t cleared; - H5AC_aux_t * aux_ptr; - H5AC_slist_entry_t * slist_entry_ptr = NULL; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity check */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank == 0); - HDassert(aux_ptr->c_slist_ptr != NULL); - - /* Set local flags */ - cleared = ((flags & H5C__FLUSH_CLEAR_ONLY_FLAG) != 0); - - if(cleared) { - /* If the entry has been cleared, must remove it from both the - * cleaned list and the dirtied list. - */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->c_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->d_slist_ptr, (void *)(&addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - } /* end if */ - else if(was_dirty) { - if(NULL == H5SL_search(aux_ptr->c_slist_ptr, (void *)(&addr))) { - /* insert the address of the entry in the clean entry list. */ - if(NULL == (slist_entry_ptr = H5FL_MALLOC(H5AC_slist_entry_t))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "Can't allocate clean slist entry .") - slist_entry_ptr->addr = addr; - - if(H5SL_insert(aux_ptr->c_slist_ptr, slist_entry_ptr, &(slist_entry_ptr->addr)) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTINSERT, FAIL, "can't insert entry into clean entry slist.") - } /* end if */ - } /* end else-if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__log_flushed_entry() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__log_inserted_entry() - * - * Purpose: Update the dirty_bytes count for a newly inserted entry. - * - * If mpi_rank isnt 0, this simply means adding the size - * of the entry to the dirty_bytes count. - * - * If mpi_rank is 0, we must also add the entry to the - * dirty entries slist. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 6/30/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__log_inserted_entry(const H5AC_info_t *entry_ptr) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(entry_ptr); - cache_ptr = entry_ptr->cache_ptr; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - - if(aux_ptr->mpi_rank == 0) { - H5AC_slist_entry_t *slist_entry_ptr; - - HDassert(aux_ptr->d_slist_ptr != NULL); - HDassert(aux_ptr->c_slist_ptr != NULL); - - /* Entry to insert should not be in dirty list currently */ - if(NULL != H5SL_search(aux_ptr->d_slist_ptr, (const void *)(&entry_ptr->addr))) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Inserted entry already in dirty slist.") - - /* insert the address of the entry in the dirty entry list, and - * add its size to the dirty_bytes count. - */ - if(NULL == (slist_entry_ptr = H5FL_MALLOC(H5AC_slist_entry_t))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "Can't allocate dirty slist entry .") - slist_entry_ptr->addr = entry_ptr->addr; - if(H5SL_insert(aux_ptr->d_slist_ptr, slist_entry_ptr, &(slist_entry_ptr->addr)) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTINSERT, FAIL, "can't insert entry into dirty entry slist.") - - /* Entry to insert should not be in clean list either */ - if(NULL != H5SL_search(aux_ptr->c_slist_ptr, (const void *)(&entry_ptr->addr))) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Inserted entry in clean slist.") - } /* end if */ - - aux_ptr->dirty_bytes += entry_ptr->size; - -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->insert_dirty_bytes += size; - aux_ptr->insert_dirty_bytes_updates += 1; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__log_inserted_entry() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__log_moved_entry() - * - * Purpose: Update the dirty_bytes count for a moved entry. - * - * WARNING - * - * At present, the way that the move call is used ensures - * that the moved entry is present in all caches by - * moving in a collective operation and immediately after - * unprotecting the target entry. - * - * This function uses this invariant, and will cause arcane - * failures if it is not met. If maintaining this invariant - * becomes impossible, we will have to rework this function - * extensively, and likely include a bit of IPC for - * synchronization. A better option might be to subsume - * move in the unprotect operation. - * - * Given that the target entry is in all caches, the function - * proceeds as follows: - * - * For processes with mpi rank other 0, it simply checks to - * see if the entry was dirty prior to the move, and adds - * the entries size to the dirty bytes count. - * - * In the process with mpi rank 0, the function first checks - * to see if the entry was dirty prior to the move. If it - * was, and if the entry doesn't appear in the dirtied list - * under its old address, it adds the entry's size to the - * dirty bytes count. - * - * The rank 0 process then removes any references to the - * entry under its old address from the cleands and dirtied - * lists, and inserts an entry in the dirtied list under the - * new address. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 6/30/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__log_moved_entry(const H5F_t *f, haddr_t old_addr, haddr_t new_addr) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - hbool_t entry_in_cache; - hbool_t entry_dirty; - size_t entry_size; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f); - HDassert(f->shared); - cache_ptr = (H5AC_t *)f->shared->cache; - HDassert(cache_ptr); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - - /* get entry status, size, etc here */ - if(H5C_get_entry_status(f, old_addr, &entry_size, &entry_in_cache, - &entry_dirty, NULL, NULL, NULL, NULL) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't get entry status.") - if(!entry_in_cache) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "entry not in cache.") - - if(aux_ptr->mpi_rank == 0) { - H5AC_slist_entry_t * slist_entry_ptr; - - HDassert(aux_ptr->d_slist_ptr != NULL); - HDassert(aux_ptr->c_slist_ptr != NULL); - - /* if the entry appears in the cleaned entry slist, under its old - * address, remove it. - */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->c_slist_ptr, (void *)(&old_addr)))) - slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, slist_entry_ptr); - - /* if the entry appears in the dirtied entry slist under its old - * address, remove it, but don't free it. Set addr to new_addr. - */ - if(NULL != (slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->d_slist_ptr, (void *)(&old_addr)))) - slist_entry_ptr->addr = new_addr; - else { - /* otherwise, allocate a new entry that is ready - * for insertion, and increment dirty_bytes. - * - * Note that the fact that the entry wasn't in the dirtied - * list under its old address implies that it must have - * been clean to start with. - */ - HDassert(!entry_dirty); - if(NULL == (slist_entry_ptr = H5FL_MALLOC(H5AC_slist_entry_t))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "Can't allocate dirty slist entry .") - slist_entry_ptr->addr = new_addr; - - aux_ptr->dirty_bytes += entry_size; - -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->move_dirty_bytes += entry_size; - aux_ptr->move_dirty_bytes_updates += 1; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - } /* end else */ - - /* insert / reinsert the entry in the dirty slist */ - if(H5SL_insert(aux_ptr->d_slist_ptr, slist_entry_ptr, &(slist_entry_ptr->addr)) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTINSERT, FAIL, "can't insert entry into dirty entry slist.") - } /* end if */ - else if(!entry_dirty) { - aux_ptr->dirty_bytes += entry_size; - -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->move_dirty_bytes += entry_size; - aux_ptr->move_dirty_bytes_updates += 1; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - } /* end else-if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__log_moved_entry() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__propagate_and_apply_candidate_list - * - * Purpose: Prior to the addition of support for multiple metadata - * write strategies, in PHDF5, only the metadata cache with - * mpi rank 0 was allowed to write to file. All other - * metadata caches on processes with rank greater than 0 - * were required to retain dirty entries until they were - * notified that the entry was clean. - * - * This constraint is relaxed with the distributed - * metadata write strategy, in which a list of candidate - * metadata cache entries is constructed by the process 0 - * cache and then distributed to the caches of all the other - * processes. Once the listed is distributed, many (if not - * all) processes writing writing a unique subset of the - * entries, and marking the remainder clean. The subsets - * are chosen so that each entry in the list of candidates - * is written by exactly one cache, and all entries are - * marked as being clean in all caches. - * - * While the list of candidate cache entries is prepared - * elsewhere, this function is the main routine for distributing - * and applying the list. It must be run simultaniously on - * all processes that have the relevant file open. To ensure - * proper synchronization, there is a barrier at the beginning - * of this function. - * - * At present, this function is called under one of two - * circumstances: - * - * 1) Dirty byte creation exceeds some user specified value. - * - * While metadata reads may occur independently, all - * operations writing metadata must be collective. Thus - * all metadata caches see the same sequence of operations, - * and therefore the same dirty data creation. - * - * This fact is used to synchronize the caches for purposes - * of propagating the list of candidate entries, by simply - * calling this function from all caches whenever some user - * specified threshold on dirty data is exceeded. (the - * process 0 cache creates the candidate list just before - * calling this function). - * - * 2) Under direct user control -- this operation must be - * collective. - * - * The operations to be managed by this function are as - * follows: - * - * All processes: - * - * 1) Participate in an opening barrier. - * - * For the process with mpi rank 0: - * - * 1) Load the contents of the candidate list - * (candidate_slist_ptr) into a buffer, and broadcast that - * buffer to all the other caches. Clear the candidate - * list in passing. - * - * If there is a positive number of candidates, proceed with - * the following: - * - * 2) Apply the candidate entry list. - * - * 3) Particpate in a closing barrier. - * - * 4) Remove from the dirty list (d_slist_ptr) and from the - * flushed and still clean entries list (c_slist_ptr), - * all addresses that appeared in the candidate list, as - * these entries are now clean. - * - * - * For all processes with mpi rank greater than 0: - * - * 1) Receive the candidate entry list broadcast - * - * If there is a positive number of candidates, proceed with - * the following: - * - * 2) Apply the candidate entry list. - * - * 3) Particpate in a closing barrier. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * 3/17/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__propagate_and_apply_candidate_list(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - haddr_t * candidates_list_ptr = NULL; - int mpi_result; - int num_candidates = 0; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - - /* to prevent "messages from the future" we must synchronize all - * processes before we write any entries. - */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - if(aux_ptr->mpi_rank == 0) { - if(H5AC__broadcast_candidate_list(cache_ptr, &num_candidates, &candidates_list_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't broadcast candidate slist.") - - HDassert(H5SL_count(aux_ptr->candidate_slist_ptr) == 0); - } /* end if */ - else { - if(H5AC__receive_candidate_list(cache_ptr, &num_candidates, &candidates_list_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't receive candidate broadcast.") - } /* end else */ - - if(num_candidates > 0) { - herr_t result; - - /* all processes apply the candidate list. - * H5C_apply_candidate_list() handles the details of - * distributing the writes across the processes. - */ - - /* Enable writes during this operation */ - aux_ptr->write_permitted = TRUE; - - /* Apply the candidate list */ - result = H5C_apply_candidate_list(f, dxpl_id, cache_ptr, num_candidates, - candidates_list_ptr, aux_ptr->mpi_rank, aux_ptr->mpi_size); - - /* Disable writes again */ - aux_ptr->write_permitted = FALSE; - - /* Check for error on the write operation */ - if(result < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't apply candidate list.") - - /* this code exists primarily for the test bed -- it allows us to - * enforce posix semantics on the server that pretends to be a - * file system in our parallel tests. - */ - if(aux_ptr->write_done) - (aux_ptr->write_done)(); - - /* to prevent "messages from the past" we must synchronize all - * processes again before we go on. - */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - /* if this is process zero, tidy up the dirtied, - * and flushed and still clean lists. - */ - if(aux_ptr->mpi_rank == 0) - if(H5AC__tidy_cache_0_lists(cache_ptr, num_candidates, candidates_list_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't tidy up process 0 lists.") - } /* end if */ - - /* if it is defined, call the sync point done callback. Note - * that this callback is defined purely for testing purposes, - * and should be undefined under normal operating circumstances. - */ - if(aux_ptr->sync_point_done) - (aux_ptr->sync_point_done)(num_candidates, candidates_list_ptr); - -done: - if(candidates_list_ptr) - candidates_list_ptr = (haddr_t *)H5MM_xfree((void *)candidates_list_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__propagate_and_apply_candidate_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__propagate_flushed_and_still_clean_entries_list - * - * Purpose: In PHDF5, if the process 0 only metadata write strategy - * is selected, only the metadata cache with mpi rank 0 is - * allowed to write to file. All other metadata caches on - * processes with rank greater than 0 must retain dirty - * entries until they are notified that the entry is now - * clean. - * - * This function is the main routine for handling this - * notification proceedure. It must be called - * simultaniously on all processes that have the relevant - * file open. To this end, it is called only during a - * sync point, with a barrier prior to the call. - * - * Note that any metadata entry writes by process 0 will - * occur after the barrier and just before this call. - * - * Typicaly, calls to this function will be triggered in - * one of two ways: - * - * 1) Dirty byte creation exceeds some user specified value. - * - * While metadata reads may occur independently, all - * operations writing metadata must be collective. Thus - * all metadata caches see the same sequence of operations, - * and therefore the same dirty data creation. - * - * This fact is used to synchronize the caches for purposes - * of propagating the list of flushed and still clean - * entries, by simply calling this function from all - * caches whenever some user specified threshold on dirty - * data is exceeded. - * - * 2) Under direct user control -- this operation must be - * collective. - * - * The operations to be managed by this function are as - * follows: - * - * For the process with mpi rank 0: - * - * 1) Load the contents of the flushed and still clean entries - * list (c_slist_ptr) into a buffer, and broadcast that - * buffer to all the other caches. - * - * 2) Clear the flushed and still clean entries list - * (c_slist_ptr). - * - * - * For all processes with mpi rank greater than 0: - * - * 1) Receive the flushed and still clean entries list broadcast - * - * 2) Mark the specified entries as clean. - * - * - * For all processes: - * - * 1) Reset the dirtied bytes count to 0. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * July 5, 2005 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__propagate_flushed_and_still_clean_entries_list(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__PROCESS_0_ONLY); - - if(aux_ptr->mpi_rank == 0) { - if(H5AC__broadcast_clean_list(cache_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't broadcast clean slist.") - HDassert(H5SL_count(aux_ptr->c_slist_ptr) == 0); - } /* end if */ - else { - if(H5AC__receive_and_apply_clean_list(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't receive and/or process clean slist broadcast.") - } /* end else */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__propagate_flushed_and_still_clean_entries_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC_receive_haddr_list() - * - * Purpose: Receive the list of entry addresses from process 0, - * and return it in a buffer pointed to by *haddr_buf_ptr_ptr. - * Note that the caller must free this buffer if it is - * returned. - * - * This function must only be called by the process with - * MPI_rank greater than 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: Quincey Koziol, 6/11/2015 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__receive_haddr_list(MPI_Comm mpi_comm, int *num_entries_ptr, - haddr_t **haddr_buf_ptr_ptr) -{ - haddr_t * haddr_buf_ptr = NULL; - int mpi_result; - int num_entries; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(num_entries_ptr != NULL); - HDassert(*num_entries_ptr == 0); - HDassert(haddr_buf_ptr_ptr != NULL); - HDassert(*haddr_buf_ptr_ptr == NULL); - - /* First receive the number of entries in the list so that we - * can set up a buffer to receive them. If there aren't - * any, we are done. - */ - if(MPI_SUCCESS != (mpi_result = MPI_Bcast(&num_entries, 1, MPI_INT, 0, mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - - if(num_entries > 0) { - size_t buf_size; - - /* allocate buffers to store the list of entry base addresses in */ - buf_size = sizeof(haddr_t) * (size_t)num_entries; - if(NULL == (haddr_buf_ptr = (haddr_t *)H5MM_malloc(buf_size))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "memory allocation failed for haddr buffer") - - /* Now receive the list of candidate entries */ - if(MPI_SUCCESS != (mpi_result = MPI_Bcast((void *)haddr_buf_ptr, (int)buf_size, MPI_BYTE, 0, mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) - } /* end if */ - - /* finally, pass the number of entries and the buffer pointer - * back to the caller. - */ - *num_entries_ptr = num_entries; - *haddr_buf_ptr_ptr = haddr_buf_ptr; - -done: - if(ret_value < 0) - if(haddr_buf_ptr) - haddr_buf_ptr = (haddr_t *)H5MM_xfree((void *)haddr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC_receive_haddr_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__receive_and_apply_clean_list() - * - * Purpose: Receive the list of cleaned entries from process 0, - * and mark the specified entries as clean. - * - * This function must only be called by the process with - * MPI_rank greater than 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 7/4/05 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__receive_and_apply_clean_list(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - haddr_t * haddr_buf_ptr = NULL; - int num_entries = 0; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity check */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank != 0); - - /* Retrieve the clean list from process 0 */ - if(H5AC__receive_haddr_list(aux_ptr->mpi_comm, &num_entries, &haddr_buf_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "can't receive clean list") - - if(num_entries > 0) - /* mark the indicated entries as clean */ - if(H5C_mark_entries_as_clean(f, dxpl_id, (int32_t)num_entries, haddr_buf_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't mark entries clean.") - - /* if it is defined, call the sync point done callback. Note - * that this callback is defined purely for testing purposes, - * and should be undefined under normal operating circumstances. - */ - if(aux_ptr->sync_point_done) - (aux_ptr->sync_point_done)(num_entries, haddr_buf_ptr); - -done: - if(haddr_buf_ptr) - haddr_buf_ptr = (haddr_t *)H5MM_xfree((void *)haddr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__receive_and_apply_clean_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * - * Function: H5AC__receive_candidate_list() - * - * Purpose: Receive the list of candidate entries from process 0, - * and return it in a buffer pointed to by *haddr_buf_ptr_ptr. - * Note that the caller must free this buffer if it is - * returned. - * - * This function must only be called by the process with - * MPI_rank greater than 0. - * - * Return SUCCEED on success, and FAIL on failure. - * - * Return: Non-negative on success/Negative on failure. - * - * Programmer: John Mainzer, 3/17/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__receive_candidate_list(const H5AC_t *cache_ptr, int *num_entries_ptr, - haddr_t **haddr_buf_ptr_ptr) -{ - H5AC_aux_t * aux_ptr; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->mpi_rank != 0); - HDassert(aux_ptr-> metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert(num_entries_ptr != NULL); - HDassert(*num_entries_ptr == 0); - HDassert(haddr_buf_ptr_ptr != NULL); - HDassert(*haddr_buf_ptr_ptr == NULL); - - /* Retrieve the candidate list from process 0 */ - if(H5AC__receive_haddr_list(aux_ptr->mpi_comm, num_entries_ptr, haddr_buf_ptr_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "can't receive clean list") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__receive_candidate_list() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__rsp__dist_md_write__flush - * - * Purpose: Routine for handling the details of running a sync point - * that is triggered by a flush -- which in turn must have been - * triggered by either a flush API call or a file close -- - * when the distributed metadata write strategy is selected. - * - * Upon entry, each process generates it own candidate list, - * being a sorted list of all dirty metadata entries currently - * in the metadata cache. Note that this list must be idendical - * across all processes, as all processes see the same stream - * of dirty metadata coming in, and use the same lists of - * candidate entries at each sync point. (At first glance, this - * argument sounds circular, but think of it in the sense of - * a recursive proof). - * - * If this this list is empty, we are done, and the function - * returns - * - * Otherwise, after the sorted list dirty metadata entries is - * constructed, each process uses the same algorithm to assign - * each entry on the candidate list to exactly one process for - * flushing. - * - * At this point, all processes participate in a barrier to - * avoid messages from the past/future bugs. - * - * Each process then flushes the entries assigned to it, and - * marks all other entries on the candidate list as clean. - * - * Finally, all processes participate in a second barrier to - * avoid messages from the past/future bugs. - * - * At the end of this process, process 0 and only process 0 - * must tidy up its lists of dirtied and cleaned entries. - * These lists are not used in the distributed metadata write - * strategy, but they must be maintained should we shift - * to a strategy that uses them. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * April 28, 2010 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__rsp__dist_md_write__flush(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - haddr_t * haddr_buf_ptr = NULL; - int mpi_result; - int num_entries = 0; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - - /* first construct the candidate list -- initially, this will be in the - * form of a skip list. We will convert it later. - */ - if(H5C_construct_candidate_list__clean_cache(cache_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't construct candidate list.") - - if(H5SL_count(aux_ptr->candidate_slist_ptr) > 0) { - herr_t result; - - /* convert the candidate list into the format we - * are used to receiving from process 0. - */ - if(H5AC__copy_candidate_list_to_buffer(cache_ptr, &num_entries, &haddr_buf_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't construct candidate buffer.") - - /* initial sync point barrier */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - /* Enable writes during this operation */ - aux_ptr->write_permitted = TRUE; - - /* Apply the candidate list */ - result = H5C_apply_candidate_list(f, dxpl_id, cache_ptr, num_entries, - haddr_buf_ptr, aux_ptr->mpi_rank, aux_ptr->mpi_size); - - /* Disable writes again */ - aux_ptr->write_permitted = FALSE; - - /* Check for error on the write operation */ - if(result < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't apply candidate list.") - - /* this code exists primarily for the test bed -- it allows us to - * enforce posix semantics on the server that pretends to be a - * file system in our parallel tests. - */ - if(aux_ptr->write_done) - (aux_ptr->write_done)(); - - /* final sync point barrier */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - /* if this is process zero, tidy up the dirtied, - * and flushed and still clean lists. - */ - if(aux_ptr->mpi_rank == 0) - if(H5AC__tidy_cache_0_lists(cache_ptr, num_entries, haddr_buf_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Can't tidy up process 0 lists.") - } /* end if */ - - /* if it is defined, call the sync point done callback. Note - * that this callback is defined purely for testing purposes, - * and should be undefined under normal operating circumstances. - */ - if(aux_ptr->sync_point_done) - (aux_ptr->sync_point_done)(num_entries, haddr_buf_ptr); - -done: - if(haddr_buf_ptr) - haddr_buf_ptr = (haddr_t *)H5MM_xfree((void *)haddr_buf_ptr); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__rsp__dist_md_write__flush() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__rsp__dist_md_write__flush_to_min_clean - * - * Purpose: Routine for handling the details of running a sync point - * triggered by the accumulation of dirty metadata (as - * opposed to a flush call to the API) when the distributed - * metadata write strategy is selected. - * - * After invocation and initial sanity checking this function - * first checks to see if evictions are enabled -- if they - * are not, the function does nothing and returns. - * - * Otherwise, process zero constructs a list of entries to - * be flushed in order to bring the process zero cache back - * within its min clean requirement. Note that this list - * (the candidate list) may be empty. - * - * Then, all processes participate in a barrier. - * - * After the barrier, process 0 broadcasts the number of - * entries in the candidate list prepared above, and all - * other processes receive this number. - * - * If this number is zero, we are done, and the function - * returns without further action. - * - * Otherwise, process 0 broadcasts the sorted list of - * candidate entries, and all other processes receive it. - * - * Then, each process uses the same algorithm to assign - * each entry on the candidate list to exactly one process - * for flushing. - * - * Each process then flushes the entries assigned to it, and - * marks all other entries on the candidate list as clean. - * - * Finally, all processes participate in a second barrier to - * avoid messages from the past/future bugs. - * - * At the end of this process, process 0 and only process 0 - * must tidy up its lists of dirtied and cleaned entries. - * These lists are not used in the distributed metadata write - * strategy, but they must be maintained should we shift - * to a strategy that uses them. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * April 28, 2010 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__rsp__dist_md_write__flush_to_min_clean(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - hbool_t evictions_enabled; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - - /* Query if evictions are allowed */ - if(H5C_get_evictions_enabled((const H5C_t *)cache_ptr, &evictions_enabled) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5C_get_evictions_enabled() failed.") - - if(evictions_enabled) { - /* construct candidate list -- process 0 only */ - if(aux_ptr->mpi_rank == 0) - if(H5AC__construct_candidate_list(cache_ptr, aux_ptr, H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't construct candidate list.") - - /* propagate and apply candidate list -- all processes */ - if(H5AC__propagate_and_apply_candidate_list(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't propagate and apply candidate list.") - } /* evictions enabled */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__rsp__dist_md_write__flush_to_min_clean() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__rsp__p0_only__flush - * - * Purpose: Routine for handling the details of running a sync point - * that is triggered a flush -- which in turn must have been - * triggered by either a flush API call or a file close -- - * when the process 0 only metadata write strategy is selected. - * - * First, all processes participate in a barrier. - * - * Then process zero flushes all dirty entries, and broadcasts - * they number of clean entries (if any) to all the other - * caches. - * - * If this number is zero, we are done. - * - * Otherwise, process 0 broadcasts the list of cleaned - * entries, and all other processes which are part of this - * file group receive it, and mark the listed entries as - * clean in their caches. - * - * Since all processes have the same set of dirty - * entries at the beginning of the sync point, and all - * entries that will be written are written before - * process zero broadcasts the number of cleaned entries, - * there is no need for a closing barrier. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * April 28, 2010 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__rsp__p0_only__flush(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - int mpi_result; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__PROCESS_0_ONLY); - - /* to prevent "messages from the future" we must - * synchronize all processes before we start the flush. - * Hence the following barrier. - */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - /* Flush data to disk, from rank 0 process */ - if(aux_ptr->mpi_rank == 0) { - herr_t result; - - /* Enable writes during this operation */ - aux_ptr->write_permitted = TRUE; - - /* Flush the cache */ - result = H5C_flush_cache(f, dxpl_id, H5AC__NO_FLAGS_SET); - - /* Disable writes again */ - aux_ptr->write_permitted = FALSE; - - /* Check for error on the write operation */ - if(result < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't flush.") - - /* this code exists primarily for the test bed -- it allows us to - * enforce posix semantics on the server that pretends to be a - * file system in our parallel tests. - */ - if(aux_ptr->write_done) - (aux_ptr->write_done)(); - } /* end if */ - - /* Propagate cleaned entries to other ranks. */ - if(H5AC__propagate_flushed_and_still_clean_entries_list(f, H5AC_dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't propagate clean entries list.") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__rsp__p0_only__flush() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__rsp__p0_only__flush_to_min_clean - * - * Purpose: Routine for handling the details of running a sync point - * triggered by the accumulation of dirty metadata (as - * opposed to a flush call to the API) when the process 0 - * only metadata write strategy is selected. - * - * After invocation and initial sanity checking this function - * first checks to see if evictions are enabled -- if they - * are not, the function does nothing and returns. - * - * Otherwise, all processes participate in a barrier. - * - * After the barrier, if this is process 0, the function - * causes the cache to flush sufficient entries to get the - * cache back within its minimum clean fraction, and broadcast - * the number of entries which have been flushed since - * the last sync point, and are still clean. - * - * If this number is zero, we are done. - * - * Otherwise, process 0 broadcasts the list of cleaned - * entries, and all other processes which are part of this - * file group receive it, and mark the listed entries as - * clean in their caches. - * - * Since all processes have the same set of dirty - * entries at the beginning of the sync point, and all - * entries that will be written are written before - * process zero broadcasts the number of cleaned entries, - * there is no need for a closing barrier. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * April 28, 2010 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__rsp__p0_only__flush_to_min_clean(H5F_t *f, hid_t dxpl_id) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - hbool_t evictions_enabled; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__PROCESS_0_ONLY); - - /* Query if evictions are allowed */ - if(H5C_get_evictions_enabled((const H5C_t *)cache_ptr, &evictions_enabled) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5C_get_evictions_enabled() failed.") - - /* Flush if evictions are allowed -- following call - * will cause process 0 to flush to min clean size, - * and then propagate the newly clean entries to the - * other processes. - * - * Otherwise, do nothing. - */ - if(evictions_enabled) { - int mpi_result; - - /* to prevent "messages from the future" we must synchronize all - * processes before we start the flush. This synchronization may - * already be done -- hence the do_barrier parameter. - */ - if(MPI_SUCCESS != (mpi_result = MPI_Barrier(aux_ptr->mpi_comm))) - HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_result) - - if(0 == aux_ptr->mpi_rank) { - herr_t result; - - /* here, process 0 flushes as many entries as necessary to - * comply with the currently specified min clean size. - * Note that it is quite possible that no entries will be - * flushed. - */ - - /* Enable writes during this operation */ - aux_ptr->write_permitted = TRUE; - - /* Flush the cache */ - result = H5C_flush_to_min_clean(f, dxpl_id); - - /* Disable writes again */ - aux_ptr->write_permitted = FALSE; - - /* Check for error on the write operation */ - if(result < 0) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "H5C_flush_to_min_clean() failed.") - - /* this call exists primarily for the test code -- it is used - * to enforce POSIX semantics on the process used to simulate - * reads and writes in t_cache.c. - */ - if(aux_ptr->write_done) - (aux_ptr->write_done)(); - } /* end if */ - - if(H5AC__propagate_flushed_and_still_clean_entries_list(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't propagate clean entries list.") - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__rsp__p0_only__flush_to_min_clean() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__run_sync_point - * - * Purpose: Top level routine for managing a sync point between all - * meta data caches in the parallel case. Since all caches - * see the same sequence of dirty metadata, we simply count - * bytes of dirty metadata, and run a sync point whenever the - * number of dirty bytes of metadata seen since the last - * sync point exceeds a threshold that is common across all - * processes. We also run sync points in response to - * HDF5 API calls triggering either a flush or a file close. - * - * In earlier versions of PHDF5, only the metadata cache with - * mpi rank 0 was allowed to write to file. All other - * metadata caches on processes with rank greater than 0 were - * required to retain dirty entries until they were notified - * that the entry is was clean. - * - * This function was created to make it easier for us to - * experiment with other options, as it is a single point - * for the execution of sync points. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * March 11, 2010 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__run_sync_point(H5F_t *f, hid_t dxpl_id, int sync_point_op) -{ - H5AC_t * cache_ptr; - H5AC_aux_t * aux_ptr; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f != NULL); - cache_ptr = f->shared->cache; - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert((sync_point_op == H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN) || - (sync_point_op == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED)); - -#if H5AC_DEBUG_DIRTY_BYTES_CREATION -HDfprintf(stdout, "%d:H5AC_propagate...:%u: (u/uu/i/iu/r/ru) = %zu/%u/%zu/%u/%zu/%u\n", - aux_ptr->mpi_rank, - aux_ptr->dirty_bytes_propagations, - aux_ptr->unprotect_dirty_bytes, - aux_ptr->unprotect_dirty_bytes_updates, - aux_ptr->insert_dirty_bytes, - aux_ptr->insert_dirty_bytes_updates, - aux_ptr->rename_dirty_bytes, - aux_ptr->rename_dirty_bytes_updates); -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - - switch(aux_ptr->metadata_write_strategy) { - case H5AC_METADATA_WRITE_STRATEGY__PROCESS_0_ONLY: - switch(sync_point_op) { - case H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN: - if(H5AC__rsp__p0_only__flush_to_min_clean(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5AC__rsp__p0_only__flush_to_min_clean() failed.") - break; - - case H5AC_SYNC_POINT_OP__FLUSH_CACHE: - if(H5AC__rsp__p0_only__flush(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5AC__rsp__p0_only__flush() failed.") - break; - - default: - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "unknown flush op"); - break; - } /* end switch */ - break; - - case H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED: - switch(sync_point_op) { - case H5AC_SYNC_POINT_OP__FLUSH_TO_MIN_CLEAN: - if(H5AC__rsp__dist_md_write__flush_to_min_clean(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5AC__rsp__dist_md_write__flush_to_min_clean() failed.") - break; - - case H5AC_SYNC_POINT_OP__FLUSH_CACHE: - if(H5AC__rsp__dist_md_write__flush(f, dxpl_id) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "H5AC__rsp__dist_md_write__flush() failed.") - break; - - default: - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "unknown flush op"); - break; - } /* end switch */ - break; - - default: - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Unknown metadata write strategy.") - break; - } /* end switch */ - - /* reset the dirty bytes count */ - aux_ptr->dirty_bytes = 0; - -#if H5AC_DEBUG_DIRTY_BYTES_CREATION - aux_ptr->dirty_bytes_propagations += 1; - aux_ptr->unprotect_dirty_bytes = 0; - aux_ptr->unprotect_dirty_bytes_updates = 0; - aux_ptr->insert_dirty_bytes = 0; - aux_ptr->insert_dirty_bytes_updates = 0; - aux_ptr->rename_dirty_bytes = 0; - aux_ptr->rename_dirty_bytes_updates = 0; -#endif /* H5AC_DEBUG_DIRTY_BYTES_CREATION */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__run_sync_point() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__tidy_cache_0_lists() - * - * Purpose: In the distributed metadata write strategy, not all dirty - * entries are written by process 0 -- thus we must tidy - * up the dirtied, and flushed and still clean lists - * maintained by process zero after each sync point. - * - * This procedure exists to tend to this issue. - * - * At this point, all entries that process 0 cleared should - * have been removed from both the dirty and flushed and - * still clean lists, and entries that process 0 has flushed - * should have been removed from the dirtied list and added - * to the flushed and still clean list. - * - * However, since the distributed metadata write strategy - * doesn't make use of these lists, the objective is simply - * to maintain these lists in consistent state that allows - * them to be used should the metadata write strategy change - * to one that uses these lists. - * - * Thus for our purposes, all we need to do is remove from - * the dirtied and flushed and still clean lists all - * references to entries that appear in the candidate list. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: John Mainzer - * 4/20/10 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__tidy_cache_0_lists(H5AC_t *cache_ptr, int num_candidates, - haddr_t *candidates_list_ptr) -{ - H5AC_aux_t * aux_ptr; - int i; - - FUNC_ENTER_STATIC_NOERR - - /* Sanity checks */ - HDassert(cache_ptr != NULL); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - aux_ptr = (H5AC_aux_t *)(cache_ptr->aux_ptr); - HDassert(aux_ptr != NULL); - HDassert(aux_ptr->magic == H5AC__H5AC_AUX_T_MAGIC); - HDassert(aux_ptr->metadata_write_strategy == H5AC_METADATA_WRITE_STRATEGY__DISTRIBUTED); - HDassert(aux_ptr->mpi_rank == 0); - HDassert(num_candidates > 0); - HDassert(candidates_list_ptr != NULL); - - /* clean up dirtied and flushed and still clean lists by removing - * all entries on the candidate list. Cleared entries should - * have been removed from both the dirty and cleaned lists at - * this point, flushed entries should have been added to the - * cleaned list. However, for this metadata write strategy, - * we just want to remove all references to the candidate entries. - */ - for(i = 0; i < num_candidates; i++) { - H5AC_slist_entry_t * d_slist_entry_ptr; - H5AC_slist_entry_t * c_slist_entry_ptr; - haddr_t addr; - - addr = candidates_list_ptr[i]; - - /* addr may be either on the dirtied list, or on the flushed - * and still clean list. Remove it. - */ - if(NULL != (d_slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->d_slist_ptr, (void *)&addr))) - d_slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, d_slist_entry_ptr); - if(NULL != (c_slist_entry_ptr = (H5AC_slist_entry_t *)H5SL_remove(aux_ptr->c_slist_ptr, (void *)&addr))) - c_slist_entry_ptr = H5FL_FREE(H5AC_slist_entry_t, c_slist_entry_ptr); - } /* end for */ - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5AC__tidy_cache_0_lists() */ -#endif /* H5_HAVE_PARALLEL */ - - -/*------------------------------------------------------------------------- - * Function: H5AC__flush_entries - * - * Purpose: Flush the metadata cache associated with the specified file, - * only writing from rank 0, but propagating the cleaned entries - * to all ranks. - * - * Return: Non-negative on success/Negative on failure if there was a - * request to flush all items and something was protected. - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Aug 22 2009 - * - *------------------------------------------------------------------------- - */ -#ifdef H5_HAVE_PARALLEL -static herr_t -H5AC__flush_entries(H5F_t *f, hid_t dxpl_id) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity checks */ - HDassert(f); - HDassert(f->shared->cache); - - /* Check if we have >1 ranks */ - if(f->shared->cache->aux_ptr) - if(H5AC__run_sync_point(f, dxpl_id, H5AC_SYNC_POINT_OP__FLUSH_CACHE) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "Can't run sync point.") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5AC__flush_entries() */ -#endif /* H5_HAVE_PARALLEL */ - - /*------------------------------------------------------------------------------ * Function: H5AC_ignore_tags() * |