/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by The HDF Group. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the COPYING file, which can be found at the root of the source code * * distribution tree, or in https://www.hdfgroup.org/licenses. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* * Purpose: Free space section callbacks for file. * */ /****************/ /* Module Setup */ /****************/ #define H5F_FRIEND /*suppress error about including H5Fpkg */ #include "H5MFmodule.h" /* This source code file is part of the H5MF module */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* File access */ #include "H5FLprivate.h" /* Free Lists */ #include "H5MFpkg.h" /* File memory management */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ /* 'simple/small/large' section callbacks */ static H5FS_section_info_t *H5MF__sect_deserialize(const H5FS_section_class_t *cls, const uint8_t *buf, haddr_t sect_addr, hsize_t sect_size, unsigned *des_flags); static herr_t H5MF__sect_valid(const H5FS_section_class_t *cls, const H5FS_section_info_t *sect); static H5FS_section_info_t *H5MF__sect_split(H5FS_section_info_t *sect, hsize_t frag_size); /* 'simple' section callbacks */ static htri_t H5MF__sect_simple_can_merge(const H5FS_section_info_t *sect1, const H5FS_section_info_t *sect2, void *udata); static herr_t H5MF__sect_simple_merge(H5FS_section_info_t **sect1, H5FS_section_info_t *sect2, void *udata); static htri_t H5MF__sect_simple_can_shrink(const H5FS_section_info_t *_sect, void *udata); static herr_t H5MF__sect_simple_shrink(H5FS_section_info_t **_sect, void *udata); /* 'small' section callbacks */ static herr_t H5MF__sect_small_add(H5FS_section_info_t **_sect, unsigned *flags, void *_udata); static htri_t H5MF__sect_small_can_merge(const H5FS_section_info_t *sect1, const H5FS_section_info_t *sect2, void *udata); static herr_t H5MF__sect_small_merge(H5FS_section_info_t **sect1, H5FS_section_info_t *sect2, void *udata); /* 'large' section callbacks */ static htri_t H5MF__sect_large_can_merge(const H5FS_section_info_t *sect1, const H5FS_section_info_t *sect2, void *udata); static herr_t H5MF__sect_large_merge(H5FS_section_info_t **sect1, H5FS_section_info_t *sect2, void *udata); static htri_t H5MF__sect_large_can_shrink(const H5FS_section_info_t *_sect, void *udata); static herr_t H5MF__sect_large_shrink(H5FS_section_info_t **_sect, void *udata); /*********************/ /* Package Variables */ /*********************/ /* Class info for "simple" free space sections */ const H5FS_section_class_t H5MF_FSPACE_SECT_CLS_SIMPLE[1] = {{ /* Class variables */ H5MF_FSPACE_SECT_SIMPLE, /* Section type */ 0, /* Extra serialized size */ H5FS_CLS_MERGE_SYM | H5FS_CLS_ADJUST_OK, /* Class flags */ NULL, /* Class private info */ /* Class methods */ NULL, /* Initialize section class */ NULL, /* Terminate section class */ /* Object methods */ NULL, /* Add section */ NULL, /* Serialize section */ H5MF__sect_deserialize, /* Deserialize section */ H5MF__sect_simple_can_merge, /* Can sections merge? */ H5MF__sect_simple_merge, /* Merge sections */ H5MF__sect_simple_can_shrink, /* Can section shrink container?*/ H5MF__sect_simple_shrink, /* Shrink container w/section */ H5MF__sect_free, /* Free section */ H5MF__sect_valid, /* Check validity of section */ H5MF__sect_split, /* Split section node for alignment */ NULL, /* Dump debugging for section */ }}; /* Class info for "small" free space sections */ const H5FS_section_class_t H5MF_FSPACE_SECT_CLS_SMALL[1] = {{ /* Class variables */ H5MF_FSPACE_SECT_SMALL, /* Section type */ 0, /* Extra serialized size */ H5FS_CLS_MERGE_SYM | H5FS_CLS_ADJUST_OK, /* Class flags */ NULL, /* Class private info */ /* Class methods */ NULL, /* Initialize section class */ NULL, /* Terminate section class */ /* Object methods */ H5MF__sect_small_add, /* Add section */ NULL, /* Serialize section */ H5MF__sect_deserialize, /* Deserialize section */ H5MF__sect_small_can_merge, /* Can sections merge? */ H5MF__sect_small_merge, /* Merge sections */ NULL, /* Can section shrink container?*/ NULL, /* Shrink container w/section */ H5MF__sect_free, /* Free section */ H5MF__sect_valid, /* Check validity of section */ H5MF__sect_split, /* Split section node for alignment */ NULL, /* Dump debugging for section */ }}; /* Class info for "large" free space sections */ const H5FS_section_class_t H5MF_FSPACE_SECT_CLS_LARGE[1] = {{ /* Class variables */ H5MF_FSPACE_SECT_LARGE, /* Section type */ 0, /* Extra serialized size */ H5FS_CLS_MERGE_SYM | H5FS_CLS_ADJUST_OK, /* Class flags */ NULL, /* Class private info */ /* Class methods */ NULL, /* Initialize section class */ NULL, /* Terminate section class */ /* Object methods */ NULL, /* Add section */ NULL, /* Serialize section */ H5MF__sect_deserialize, /* Deserialize section */ H5MF__sect_large_can_merge, /* Can sections merge? */ H5MF__sect_large_merge, /* Merge sections */ H5MF__sect_large_can_shrink, /* Can section shrink container?*/ H5MF__sect_large_shrink, /* Shrink container w/section */ H5MF__sect_free, /* Free section */ H5MF__sect_valid, /* Check validity of section */ H5MF__sect_split, /* Split section node for alignment */ NULL, /* Dump debugging for section */ }}; /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /* Declare a free list to manage the H5MF_free_section_t struct */ H5FL_DEFINE_STATIC(H5MF_free_section_t); /* * "simple/small/large" section callbacks */ /*------------------------------------------------------------------------- * Function: H5MF__sect_new * * Purpose: Create a new section of "ctype" and return it to the caller * * Return: Pointer to new section on success/NULL on failure * *------------------------------------------------------------------------- */ H5MF_free_section_t * H5MF__sect_new(unsigned ctype, haddr_t sect_off, hsize_t sect_size) { H5MF_free_section_t *sect; /* 'Simple' free space section to add */ H5MF_free_section_t *ret_value = NULL; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect_size); /* Create free space section node */ if (NULL == (sect = H5FL_MALLOC(H5MF_free_section_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for direct block free list section"); /* Set the information passed in */ sect->sect_info.addr = sect_off; sect->sect_info.size = sect_size; /* Set the section's class & state */ sect->sect_info.type = ctype; sect->sect_info.state = H5FS_SECT_LIVE; /* Set return value */ ret_value = sect; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5MF__sect_new() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_free * * Purpose: Free a 'simple/small/large' section node * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ herr_t H5MF__sect_free(H5FS_section_info_t *_sect) { H5MF_free_section_t *sect = (H5MF_free_section_t *)_sect; /* File free section */ FUNC_ENTER_PACKAGE_NOERR /* Check arguments. */ assert(sect); /* Release the section */ sect = H5FL_FREE(H5MF_free_section_t, sect); FUNC_LEAVE_NOAPI(SUCCEED) } /* H5MF__sect_free() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_deserialize * * Purpose: Deserialize a buffer into a "live" section * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static H5FS_section_info_t * H5MF__sect_deserialize(const H5FS_section_class_t *cls, const uint8_t H5_ATTR_UNUSED *buf, haddr_t sect_addr, hsize_t sect_size, unsigned H5_ATTR_UNUSED *des_flags) { H5MF_free_section_t *sect; /* New section */ H5FS_section_info_t *ret_value = NULL; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(cls); assert(H5_addr_defined(sect_addr)); assert(sect_size); /* Create free space section for block */ if (NULL == (sect = H5MF__sect_new(cls->type, sect_addr, sect_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't initialize free space section"); /* Set return value */ ret_value = (H5FS_section_info_t *)sect; done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_deserialize() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_valid * * Purpose: Check the validity of a section * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_valid(const H5FS_section_class_t H5_ATTR_UNUSED *cls, const H5FS_section_info_t #ifdef NDEBUG H5_ATTR_UNUSED #endif /* NDEBUG */ *_sect) { #ifndef NDEBUG const H5MF_free_section_t *sect = (const H5MF_free_section_t *)_sect; /* File free section */ #endif /* NDEBUG */ FUNC_ENTER_PACKAGE_NOERR /* Check arguments. */ assert(sect); FUNC_LEAVE_NOAPI(SUCCEED) } /* H5MF__sect_valid() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_split * * Purpose: Split SECT into 2 sections: fragment for alignment & the aligned section * SECT's addr and size are updated to point to the aligned section * * Return: Success: the fragment for aligning sect * Failure: null * *------------------------------------------------------------------------- */ static H5FS_section_info_t * H5MF__sect_split(H5FS_section_info_t *sect, hsize_t frag_size) { H5MF_free_section_t *ret_value = NULL; /* Return value */ FUNC_ENTER_PACKAGE /* Allocate space for new section */ if (NULL == (ret_value = H5MF__sect_new(sect->type, sect->addr, frag_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't initialize free space section"); /* Set new section's info */ sect->addr += frag_size; sect->size -= frag_size; done: FUNC_LEAVE_NOAPI((H5FS_section_info_t *)ret_value) } /* end H5MF__sect_split() */ /* * "simple" section callbacks */ /*------------------------------------------------------------------------- * Function: H5MF__sect_simple_can_merge * * Purpose: Can two sections of this type merge? * * Note: Second section must be "after" first section * * Return: Success: non-negative (true/false) * Failure: negative * *------------------------------------------------------------------------- */ static htri_t H5MF__sect_simple_can_merge(const H5FS_section_info_t *_sect1, const H5FS_section_info_t *_sect2, void H5_ATTR_UNUSED *_udata) { const H5MF_free_section_t *sect1 = (const H5MF_free_section_t *)_sect1; /* File free section */ const H5MF_free_section_t *sect2 = (const H5MF_free_section_t *)_sect2; /* File free section */ htri_t ret_value = FAIL; /* Return value */ FUNC_ENTER_PACKAGE_NOERR /* Check arguments. */ assert(sect1); assert(sect2); assert(sect1->sect_info.type == sect2->sect_info.type); /* Checks "MERGE_SYM" flag */ assert(H5_addr_lt(sect1->sect_info.addr, sect2->sect_info.addr)); /* Check if second section adjoins first section */ ret_value = H5_addr_eq(sect1->sect_info.addr + sect1->sect_info.size, sect2->sect_info.addr); FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_simple_can_merge() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_simple_merge * * Purpose: Merge two sections of this type * * Note: Second section always merges into first node * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_simple_merge(H5FS_section_info_t **_sect1, H5FS_section_info_t *_sect2, void H5_ATTR_UNUSED *_udata) { H5MF_free_section_t **sect1 = (H5MF_free_section_t **)_sect1; /* File free section */ H5MF_free_section_t *sect2 = (H5MF_free_section_t *)_sect2; /* File free section */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect1); assert((*sect1)->sect_info.type == H5MF_FSPACE_SECT_SIMPLE); assert(sect2); assert(sect2->sect_info.type == H5MF_FSPACE_SECT_SIMPLE); assert(H5_addr_eq((*sect1)->sect_info.addr + (*sect1)->sect_info.size, sect2->sect_info.addr)); /* Add second section's size to first section */ (*sect1)->sect_info.size += sect2->sect_info.size; /* Get rid of second section */ if (H5MF__sect_free((H5FS_section_info_t *)sect2) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node"); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_simple_merge() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_simple_can_shrink * * Purpose: Can this section shrink the container? * * Return: Success: non-negative (true/false) * Failure: negative * *------------------------------------------------------------------------- */ static htri_t H5MF__sect_simple_can_shrink(const H5FS_section_info_t *_sect, void *_udata) { const H5MF_free_section_t *sect = (const H5MF_free_section_t *)_sect; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ haddr_t eoa; /* End of address space in the file */ haddr_t end; /* End of section to extend */ htri_t ret_value = FAIL; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect); assert(udata); assert(udata->f); /* Retrieve the end of the file's address space */ if (HADDR_UNDEF == (eoa = H5F_get_eoa(udata->f, udata->alloc_type))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed"); /* Compute address of end of section to check */ end = sect->sect_info.addr + sect->sect_info.size; /* Check if the section is exactly at the end of the allocated space in the file */ if (H5_addr_eq(end, eoa)) { /* Set the shrinking type */ udata->shrink = H5MF_SHRINK_EOA; #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section {%" PRIuHADDR ", %" PRIuHSIZE "}, shrinks file, eoa = %" PRIuHADDR "\n", __func__, sect->sect_info.addr, sect->sect_info.size, eoa); #endif /* H5MF_ALLOC_DEBUG_MORE */ /* Indicate shrinking can occur */ HGOTO_DONE(true); } /* end if */ else { /* Shrinking can't occur if the 'eoa_shrink_only' flag is set and we're not shrinking the EOA */ if (udata->allow_eoa_shrink_only) HGOTO_DONE(false); /* Check if this section is allowed to merge with metadata aggregation block */ if (udata->f->shared->fs_aggr_merge[udata->alloc_type] & H5F_FS_MERGE_METADATA) { htri_t status; /* Status from aggregator adjoin */ /* See if section can absorb the aggregator & vice versa */ if ((status = H5MF__aggr_can_absorb(udata->f, &(udata->f->shared->meta_aggr), sect, &(udata->shrink))) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "error merging section with aggregation block"); else if (status > 0) { /* Set the aggregator to operate on */ udata->aggr = &(udata->f->shared->meta_aggr); #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section {%" PRIuHADDR ", %" PRIuHSIZE "}, adjoins metadata aggregator\n", __func__, sect->sect_info.addr, sect->sect_info.size); #endif /* H5MF_ALLOC_DEBUG_MORE */ /* Indicate shrinking can occur */ HGOTO_DONE(true); } /* end if */ } /* end if */ /* Check if this section is allowed to merge with small 'raw' aggregation block */ if (udata->f->shared->fs_aggr_merge[udata->alloc_type] & H5F_FS_MERGE_RAWDATA) { htri_t status; /* Status from aggregator adjoin */ /* See if section can absorb the aggregator & vice versa */ if ((status = H5MF__aggr_can_absorb(udata->f, &(udata->f->shared->sdata_aggr), sect, &(udata->shrink))) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "error merging section with aggregation block"); else if (status > 0) { /* Set the aggregator to operate on */ udata->aggr = &(udata->f->shared->sdata_aggr); #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section {%" PRIuHADDR ", %" PRIuHSIZE "}, adjoins small data aggregator\n", __func__, sect->sect_info.addr, sect->sect_info.size); #endif /* H5MF_ALLOC_DEBUG_MORE */ /* Indicate shrinking can occur */ HGOTO_DONE(true); } /* end if */ } /* end if */ } /* end else */ /* Set return value */ ret_value = false; done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_simple_can_shrink() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_simple_shrink * * Purpose: Shrink container with section * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_simple_shrink(H5FS_section_info_t **_sect, void *_udata) { H5MF_free_section_t **sect = (H5MF_free_section_t **)_sect; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect); assert(udata); assert(udata->f); /* Check for shrinking file */ if (H5MF_SHRINK_EOA == udata->shrink) { /* Sanity check */ assert(H5F_INTENT(udata->f) & H5F_ACC_RDWR); /* Release section's space at EOA */ if (H5F__free(udata->f, udata->alloc_type, (*sect)->sect_info.addr, (*sect)->sect_info.size) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "driver free request failed"); } /* end if */ else { /* Sanity check */ assert(udata->aggr); /* Absorb the section into the aggregator or vice versa */ if (H5MF__aggr_absorb(udata->f, udata->aggr, *sect, udata->allow_sect_absorb) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "can't absorb section into aggregator or vice versa"); } /* end else */ /* Check for freeing section */ if (udata->shrink != H5MF_SHRINK_SECT_ABSORB_AGGR) { /* Free section */ if (H5MF__sect_free((H5FS_section_info_t *)*sect) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free simple section node"); /* Mark section as freed, for free space manager */ *sect = NULL; } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_simple_shrink() */ /* * "small" section callbacks */ /*------------------------------------------------------------------------- * Function: H5MF__sect_small_add * * Purpose: Perform actions on a small "meta" action before adding it to the free space manager: * 1) Drop the section if it is at page end and its size <= page end threshold * 2) Adjust section size to include page end threshold if * (section size + threshold) is at page end * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_small_add(H5FS_section_info_t **_sect, unsigned *flags, void *_udata) { H5MF_free_section_t **sect = (H5MF_free_section_t **)_sect; /* Fractal heap free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ haddr_t sect_end; hsize_t rem, prem; herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: Entering, section {%" PRIuHADDR ", %" PRIuHSIZE "}\n", __func__, (*sect)->sect_info.addr, (*sect)->sect_info.size); #endif /* H5MF_ALLOC_DEBUG_MORE */ /* Do not adjust the section raw data or global heap data */ if (udata->alloc_type == H5FD_MEM_DRAW || udata->alloc_type == H5FD_MEM_GHEAP) HGOTO_DONE(ret_value); sect_end = (*sect)->sect_info.addr + (*sect)->sect_info.size; rem = sect_end % udata->f->shared->fs_page_size; prem = udata->f->shared->fs_page_size - rem; /* Drop the section if it is at page end and its size is <= pgend threshold */ if (!rem && (*sect)->sect_info.size <= H5F_PGEND_META_THRES(udata->f) && (*flags & H5FS_ADD_RETURNED_SPACE)) { if (H5MF__sect_free((H5FS_section_info_t *)(*sect)) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node"); *sect = NULL; *flags &= (unsigned)~H5FS_ADD_RETURNED_SPACE; *flags |= H5FS_PAGE_END_NO_ADD; #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section is dropped\n", __func__); #endif /* H5MF_ALLOC_DEBUG_MORE */ } /* end if */ /* Adjust the section if it is not at page end but its size + prem is at page end */ else if (prem <= H5F_PGEND_META_THRES(udata->f)) { (*sect)->sect_info.size += prem; #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section is adjusted {%" PRIuHADDR ", %" PRIuHSIZE "}\n", __func__, (*sect)->sect_info.addr, (*sect)->sect_info.size); #endif /* H5MF_ALLOC_DEBUG_MORE */ } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_small_add() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_small_can_merge * * Purpose: Can two sections of this type merge? * * Note: Second section must be "after" first section * The "merged" section cannot cross page boundary. * * Return: Success: non-negative (true/false) * Failure: negative * *------------------------------------------------------------------------- */ static htri_t H5MF__sect_small_can_merge(const H5FS_section_info_t *_sect1, const H5FS_section_info_t *_sect2, void *_udata) { const H5MF_free_section_t *sect1 = (const H5MF_free_section_t *)_sect1; /* File free section */ const H5MF_free_section_t *sect2 = (const H5MF_free_section_t *)_sect2; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ htri_t ret_value = false; /* Return value */ FUNC_ENTER_PACKAGE_NOERR /* Check arguments. */ assert(sect1); assert(sect2); assert(sect1->sect_info.type == sect2->sect_info.type); /* Checks "MERGE_SYM" flag */ assert(H5_addr_lt(sect1->sect_info.addr, sect2->sect_info.addr)); /* Check if second section adjoins first section */ ret_value = H5_addr_eq(sect1->sect_info.addr + sect1->sect_info.size, sect2->sect_info.addr); if (ret_value > 0) /* If they are on different pages, couldn't merge */ if ((sect1->sect_info.addr / udata->f->shared->fs_page_size) != (((sect2->sect_info.addr + sect2->sect_info.size - 1) / udata->f->shared->fs_page_size))) ret_value = false; #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: Leaving: ret_value = %d\n", __func__, ret_value); #endif /* H5MF_ALLOC_DEBUG_MORE */ FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_small_can_merge() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_small_merge * * Purpose: Merge two sections of this type * * Note: Second section always merges into first node. * If the size of the "merged" section is equal to file space page size, * free the section. * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_small_merge(H5FS_section_info_t **_sect1, H5FS_section_info_t *_sect2, void *_udata) { H5MF_free_section_t **sect1 = (H5MF_free_section_t **)_sect1; /* File free section */ H5MF_free_section_t *sect2 = (H5MF_free_section_t *)_sect2; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect1); assert((*sect1)->sect_info.type == H5MF_FSPACE_SECT_SMALL); assert(sect2); assert(sect2->sect_info.type == H5MF_FSPACE_SECT_SMALL); assert(H5_addr_eq((*sect1)->sect_info.addr + (*sect1)->sect_info.size, sect2->sect_info.addr)); /* Add second section's size to first section */ (*sect1)->sect_info.size += sect2->sect_info.size; if ((*sect1)->sect_info.size == udata->f->shared->fs_page_size) { if (H5MF_xfree(udata->f, udata->alloc_type, (*sect1)->sect_info.addr, (*sect1)->sect_info.size) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "can't free merged section"); /* Need to free possible metadata page in the PB cache */ /* This is in response to the data corruption bug from fheap.c with page buffering + page strategy */ /* Note: Large metadata page bypasses the PB cache */ /* Note: Update of raw data page (large or small sized) is handled by the PB cache */ if (udata->f->shared->page_buf != NULL && udata->alloc_type != H5FD_MEM_DRAW) if (H5PB_remove_entry(udata->f->shared, (*sect1)->sect_info.addr) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "can't free merged section"); if (H5MF__sect_free((H5FS_section_info_t *)(*sect1)) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node"); *sect1 = NULL; } /* end if */ /* Get rid of second section */ if (H5MF__sect_free((H5FS_section_info_t *)sect2) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node"); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_small_merge() */ /* * "Large" section callbacks */ /*------------------------------------------------------------------------- * Function: H5MF__sect_large_can_merge (same as H5MF__sect_simple_can_merge) * * Purpose: Can two sections of this type merge? * * Note: Second section must be "after" first section * * Return: Success: non-negative (true/false) * Failure: negative * *------------------------------------------------------------------------- */ static htri_t H5MF__sect_large_can_merge(const H5FS_section_info_t *_sect1, const H5FS_section_info_t *_sect2, void H5_ATTR_UNUSED *_udata) { const H5MF_free_section_t *sect1 = (const H5MF_free_section_t *)_sect1; /* File free section */ const H5MF_free_section_t *sect2 = (const H5MF_free_section_t *)_sect2; /* File free section */ htri_t ret_value = false; /* Return value */ FUNC_ENTER_PACKAGE_NOERR /* Check arguments. */ assert(sect1); assert(sect2); assert(sect1->sect_info.type == sect2->sect_info.type); /* Checks "MERGE_SYM" flag */ assert(H5_addr_lt(sect1->sect_info.addr, sect2->sect_info.addr)); ret_value = H5_addr_eq(sect1->sect_info.addr + sect1->sect_info.size, sect2->sect_info.addr); #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: Leaving: ret_value = %d\n", __func__, ret_value); #endif /* H5MF_ALLOC_DEBUG_MORE */ FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_large_can_merge() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_large_merge (same as H5MF__sect_simple_merge) * * Purpose: Merge two sections of this type * * Note: Second section always merges into first node * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_large_merge(H5FS_section_info_t **_sect1, H5FS_section_info_t *_sect2, void H5_ATTR_UNUSED *_udata) { H5MF_free_section_t **sect1 = (H5MF_free_section_t **)_sect1; /* File free section */ H5MF_free_section_t *sect2 = (H5MF_free_section_t *)_sect2; /* File free section */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect1); assert((*sect1)->sect_info.type == H5MF_FSPACE_SECT_LARGE); assert(sect2); assert(sect2->sect_info.type == H5MF_FSPACE_SECT_LARGE); assert(H5_addr_eq((*sect1)->sect_info.addr + (*sect1)->sect_info.size, sect2->sect_info.addr)); /* Add second section's size to first section */ (*sect1)->sect_info.size += sect2->sect_info.size; /* Get rid of second section */ if (H5MF__sect_free((H5FS_section_info_t *)sect2) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node"); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_large_merge() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_large_can_shrink * * Purpose: Can this section shrink the container? * * Return: Success: non-negative (true/false) * Failure: negative * *------------------------------------------------------------------------- */ static htri_t H5MF__sect_large_can_shrink(const H5FS_section_info_t *_sect, void *_udata) { const H5MF_free_section_t *sect = (const H5MF_free_section_t *)_sect; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ haddr_t eoa; /* End of address space in the file */ haddr_t end; /* End of section to extend */ htri_t ret_value = false; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect); assert(sect->sect_info.type == H5MF_FSPACE_SECT_LARGE); assert(udata); assert(udata->f); /* Retrieve the end of the file's address space */ if (HADDR_UNDEF == (eoa = H5FD_get_eoa(udata->f->shared->lf, udata->alloc_type))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed"); /* Compute address of end of section to check */ end = sect->sect_info.addr + sect->sect_info.size; /* Check if the section is exactly at the end of the allocated space in the file */ if (H5_addr_eq(end, eoa) && sect->sect_info.size >= udata->f->shared->fs_page_size) { /* Set the shrinking type */ udata->shrink = H5MF_SHRINK_EOA; #ifdef H5MF_ALLOC_DEBUG_MORE fprintf(stderr, "%s: section {%" PRIuHADDR ", %" PRIuHSIZE "}, shrinks file, eoa = %" PRIuHADDR "\n", __func__, sect->sect_info.addr, sect->sect_info.size, eoa); #endif /* H5MF_ALLOC_DEBUG_MORE */ /* Indicate shrinking can occur */ HGOTO_DONE(true); } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_large_can_shrink() */ /*------------------------------------------------------------------------- * Function: H5MF__sect_large_shrink * * Purpose: Shrink a large-sized section * * Return: Success: non-negative * Failure: negative * *------------------------------------------------------------------------- */ static herr_t H5MF__sect_large_shrink(H5FS_section_info_t **_sect, void *_udata) { H5MF_free_section_t **sect = (H5MF_free_section_t **)_sect; /* File free section */ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */ hsize_t frag_size = 0; /* Fragment size */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Check arguments. */ assert(sect); assert((*sect)->sect_info.type == H5MF_FSPACE_SECT_LARGE); assert(udata); assert(udata->f); assert(udata->shrink == H5MF_SHRINK_EOA); assert(H5F_INTENT(udata->f) & H5F_ACC_RDWR); assert(H5F_PAGED_AGGR(udata->f)); /* Calculate possible mis-aligned fragment */ H5MF_EOA_MISALIGN(udata->f, (*sect)->sect_info.addr, udata->f->shared->fs_page_size, frag_size); /* Free full pages from EOA */ /* Retain partial page in the free-space manager so as to keep EOA at page boundary */ if (H5F__free(udata->f, udata->alloc_type, (*sect)->sect_info.addr + frag_size, (*sect)->sect_info.size - frag_size) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "driver free request failed"); if (frag_size) /* Adjust section size for the partial page */ (*sect)->sect_info.size = frag_size; else { /* Free section */ if (H5MF__sect_free((H5FS_section_info_t *)*sect) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free simple section node"); /* Mark section as freed, for free space manager */ *sect = NULL; } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5MF__sect_large_shrink() */