/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by the Board of Trustees of the University of Illinois. * * 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 files COPYING and Copyright.html. COPYING can be found at the root * * of the source code distribution tree; Copyright.html can be found at the * * root level of an installed copy of the electronic HDF5 document set and * * is linked from the top-level documents page. It can also be found at * * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /*------------------------------------------------------------------------- * * Created: H5HL.c * Jul 16 1997 * Robb Matzke * * Purpose: Heap functions for the local heaps used by symbol * tables to store names (among other things). * * Modifications: * * Robb Matzke, 5 Aug 1997 * Added calls to H5E. * *------------------------------------------------------------------------- */ #define H5F_PACKAGE /* Suppress error about including H5Fpkg */ #define H5HL_PACKAGE /* Suppress error about including H5HLpkg */ #include "H5private.h" /* Generic Functions */ #include "H5ACprivate.h" /* Metadata cache */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* File access */ #include "H5FLprivate.h" /* Free lists */ #include "H5HLpkg.h" /* Local Heaps */ #include "H5MFprivate.h" /* File memory management */ /* Private macros */ #define H5HL_FREE_NULL 1 /*end of free list on disk */ #define H5HL_MIN_HEAP 128 /* Minimum size to reduce heap buffer to */ /* * Local heap collection version. */ #define H5HL_VERSION 0 /* Private typedefs */ /* PRIVATE PROTOTYPES */ #ifdef NOT_YET static void *H5HL_read(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t offset, size_t size, void *buf); static herr_t H5HL_write(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t offset, size_t size, const void *buf); #endif /* NOT_YET */ static herr_t H5HL_serialize(H5F_t *f, H5HL_t *heap, uint8_t *buf); static H5HL_free_t *H5HL_remove_free(H5HL_t *heap, H5HL_free_t *fl); static herr_t H5HL_minimize_heap_space(H5F_t *f, hid_t dxpl_id, H5HL_t *heap); /* Metadata cache callbacks */ static H5HL_t *H5HL_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *udata1, void *udata2); static herr_t H5HL_flush(H5F_t *f, hid_t dxpl_id, hbool_t dest, haddr_t addr, H5HL_t *heap, unsigned UNUSED * flags_ptr); static herr_t H5HL_dest(H5F_t *f, H5HL_t *heap); static herr_t H5HL_clear(H5F_t *f, H5HL_t *heap, hbool_t destroy); static herr_t H5HL_compute_size(const H5F_t *f, const H5HL_t *heap, size_t *size_ptr); /* * H5HL inherits cache-like properties from H5AC */ const H5AC_class_t H5AC_LHEAP[1] = {{ H5AC_LHEAP_ID, (H5AC_load_func_t)H5HL_load, (H5AC_flush_func_t)H5HL_flush, (H5AC_dest_func_t)H5HL_dest, (H5AC_clear_func_t)H5HL_clear, (H5AC_size_func_t)H5HL_compute_size, }}; /* Declare a free list to manage the H5HL_free_t struct */ H5FL_DEFINE_STATIC(H5HL_free_t); /* Declare a free list to manage the H5HL_t struct */ H5FL_DEFINE_STATIC(H5HL_t); /* Declare a PQ free list to manage the heap chunk information */ H5FL_BLK_DEFINE_STATIC(heap_chunk); /*------------------------------------------------------------------------- * Function: H5HL_create * * Purpose: Creates a new heap data structure on disk and caches it * in memory. SIZE_HINT is a hint for the initial size of the * data area of the heap. If size hint is invalid then a * reasonable (but probably not optimal) size will be chosen. * If the heap ever has to grow, then REALLOC_HINT is the * minimum amount by which the heap will grow. * * Return: Success: Non-negative. The file address of new heap is * returned through the ADDR argument. * * Failure: Negative * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 16 1997 * * Modifications: * * Robb Matzke, 5 Aug 1997 * Takes a flag that determines the type of heap that is * created. * * John Mainzer, 6/7/05 * Removed code modifying the is_dirty field of the cache info. * *------------------------------------------------------------------------- */ herr_t H5HL_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, haddr_t *addr_p/*out*/) { H5HL_t *heap = NULL; hsize_t total_size; /*total heap size on disk */ size_t sizeof_hdr; /* Cache H5HL header size for file */ herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(H5HL_create, FAIL); /* check arguments */ assert(f); assert(addr_p); if (size_hint && size_hint < H5HL_SIZEOF_FREE(f)) size_hint = H5HL_SIZEOF_FREE(f); size_hint = H5HL_ALIGN(size_hint); /* Cache this for later */ sizeof_hdr= H5HL_SIZEOF_HDR(f); /* allocate file version */ total_size = sizeof_hdr + size_hint; if (HADDR_UNDEF==(*addr_p=H5MF_alloc(f, H5FD_MEM_LHEAP, dxpl_id, total_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate file memory"); /* allocate memory version */ if (NULL==(heap = H5FL_CALLOC(H5HL_t))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); heap->addr = *addr_p + (hsize_t)sizeof_hdr; heap->heap_alloc = size_hint; if (NULL==(heap->chunk = H5FL_BLK_CALLOC(heap_chunk,(sizeof_hdr + size_hint)))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); /* free list */ if (size_hint) { if (NULL==(heap->freelist = H5FL_MALLOC(H5HL_free_t))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); heap->freelist->offset = 0; heap->freelist->size = size_hint; heap->freelist->prev = heap->freelist->next = NULL; } else { heap->freelist = NULL; } /* add to cache */ if (H5AC_set(f, dxpl_id, H5AC_LHEAP, *addr_p, heap, H5AC__NO_FLAGS_SET) < 0) HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "unable to cache heap"); done: if (ret_value<0) { if (H5F_addr_defined(*addr_p)) H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, *addr_p, total_size); if (heap) { if(H5HL_dest(f,heap)<0) HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to destroy local heap collection"); } } FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5HL_load * * Purpose: Loads a heap from disk. * * Return: Success: Ptr to a local heap memory data structure. * * Failure: NULL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 17 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * Quincey Koziol, 2002-7-180 * Added dxpl parameter to allow more control over I/O from metadata * cache. *------------------------------------------------------------------------- */ static H5HL_t * H5HL_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED * udata1, void UNUSED * udata2) { uint8_t hdr[52]; size_t sizeof_hdr; /* Cache H5HL header size for file */ const uint8_t *p = NULL; H5HL_t *heap = NULL; H5HL_free_t *fl = NULL, *tail = NULL; size_t free_block = H5HL_FREE_NULL; H5HL_t *ret_value; FUNC_ENTER_NOAPI(H5HL_load, NULL); /* check arguments */ assert(f); assert(H5F_addr_defined(addr)); assert(!udata1); assert(!udata2); /* Cache this for later */ sizeof_hdr= H5HL_SIZEOF_HDR(f); assert(sizeof_hdr <= sizeof(hdr)); /* Get the local heap's header */ if (H5F_block_read(f, H5FD_MEM_LHEAP, addr, sizeof_hdr, dxpl_id, hdr) < 0) HGOTO_ERROR(H5E_HEAP, H5E_READERROR, NULL, "unable to read heap header"); p = hdr; /* Check magic number */ if(HDmemcmp(hdr, H5HL_MAGIC, (size_t)H5HL_SIZEOF_MAGIC)) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "bad heap signature"); p += H5HL_SIZEOF_MAGIC; /* Version */ if (H5HL_VERSION!=*p++) HGOTO_ERROR (H5E_HEAP, H5E_CANTLOAD, NULL, "wrong version number in global heap"); /* Reserved */ p += 3; /* Allocate space in memory for the heap */ if (NULL==(heap = H5FL_CALLOC(H5HL_t))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); /* heap data size */ H5F_DECODE_LENGTH(f, p, heap->heap_alloc); /* free list head */ H5F_DECODE_LENGTH(f, p, free_block); if (free_block != H5HL_FREE_NULL && free_block >= heap->heap_alloc) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "bad heap free list"); /* data */ H5F_addr_decode(f, &p, &(heap->addr)); if (NULL==(heap->chunk = H5FL_BLK_CALLOC(heap_chunk,(sizeof_hdr + heap->heap_alloc)))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); if (heap->heap_alloc && H5F_block_read(f, H5FD_MEM_LHEAP, heap->addr, heap->heap_alloc, dxpl_id, heap->chunk + sizeof_hdr) < 0) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "unable to read heap data"); /* Build free list */ while (H5HL_FREE_NULL != free_block) { if (free_block >= heap->heap_alloc) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "bad heap free list"); if (NULL==(fl = H5FL_MALLOC(H5HL_free_t))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); fl->offset = free_block; fl->prev = tail; fl->next = NULL; if (tail) tail->next = fl; tail = fl; if (!heap->freelist) heap->freelist = fl; p = heap->chunk + sizeof_hdr + free_block; H5F_DECODE_LENGTH(f, p, free_block); H5F_DECODE_LENGTH(f, p, fl->size); if (fl->offset + fl->size > heap->heap_alloc) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "bad heap free list"); } /* Set return value */ ret_value = heap; done: if (!ret_value && heap) { if(H5HL_dest(f,heap)<0) HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, NULL, "unable to destroy local heap collection"); } FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5HL_minimize_heap_space * * Purpose: Go through the heap's freelist and determine if we can * eliminate the free blocks at the tail of the buffer. * * Return: Success: SUCCEED * Failure: FAIL * * Programmer: Bill Wendling * wendling@ncsa.uiuc.edu * Sept. 16, 2003 * * Modifications: * * John Mainzer, 8/10/05 * Reworked this function for a different role. * * It used to be called during cache eviction, where it * attempted to size the disk space allocation for the * actual size of the heap. However, this causes problems * in the parallel case, as the reuslting disk allocations * may not be synchronized. * * It is now called from H5HL_remove(), where it is used to * reduce heap size in response to an entry deletion. This * means that the function should either do nothing, or * reduce the size of the disk allocation. * *------------------------------------------------------------------------- */ static herr_t H5HL_minimize_heap_space(H5F_t *f, hid_t dxpl_id, H5HL_t *heap) { size_t new_heap_size = heap->heap_alloc; /* New size of heap */ size_t sizeof_hdr; herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(H5HL_minimize_heap_space, FAIL) /* check args */ HDassert(f); HDassert(heap); sizeof_hdr = H5HL_SIZEOF_HDR(f); /* cache H5HL header size for file */ /* * Check to see if we can reduce the size of the heap in memory by * eliminating free blocks at the tail of the buffer before flushing the * buffer out. */ if(heap->freelist) { H5HL_free_t *tmp_fl; H5HL_free_t *last_fl = NULL; /* Search for a free block at the end of the buffer */ for(tmp_fl = heap->freelist; tmp_fl; tmp_fl = tmp_fl->next) /* Check if the end of this free block is at the end of the buffer */ if(tmp_fl->offset + tmp_fl->size == heap->heap_alloc) { last_fl = tmp_fl; break; } /* end if */ /* * Found free block at the end of the buffer, decide what to do * about it */ if(last_fl) { /* * If the last free block's size is more than half the memory * buffer size (and the memory buffer is larger than the * minimum size), reduce or eliminate it. */ if(last_fl->size >= (heap->heap_alloc / 2) && heap->heap_alloc > H5HL_MIN_HEAP) { /* * Reduce size of buffer until it's too small or would * eliminate the free block */ while(new_heap_size > H5HL_MIN_HEAP && new_heap_size >= (last_fl->offset + H5HL_SIZEOF_FREE(f))) new_heap_size /= 2; /* * Check if reducing the memory buffer size would * eliminate the free block */ if(new_heap_size < (last_fl->offset + H5HL_SIZEOF_FREE(f))) { /* Check if this is the only block on the free list */ if(last_fl->prev == NULL && last_fl->next == NULL) { /* Double the new memory size */ new_heap_size *= 2; /* Truncate the free block */ last_fl->size = H5HL_ALIGN(new_heap_size - last_fl->offset); new_heap_size = last_fl->offset + last_fl->size; assert(last_fl->size >= H5HL_SIZEOF_FREE(f)); } else { /* * Set the size of the memory buffer to the start * of the free list */ new_heap_size = last_fl->offset; /* Eliminate the free block from the list */ last_fl = H5HL_remove_free(heap, last_fl); } /* end else */ } else { /* Truncate the free block */ last_fl->size = H5HL_ALIGN(new_heap_size - last_fl->offset); new_heap_size = last_fl->offset + last_fl->size; assert(last_fl->size >= H5HL_SIZEOF_FREE(f)); assert(last_fl->size == H5HL_ALIGN(last_fl->size)); } /* end else */ } /* end if */ } /* end if */ } /* end if */ /* * If the heap grew smaller than disk storage then move the * data segment of the heap to another contiguous block of disk * storage. */ if(new_heap_size != heap->heap_alloc) { haddr_t old_addr = heap->addr, new_addr; HDassert(new_heap_size < heap->heap_alloc); /* Resize the memory buffer */ heap->chunk = H5FL_BLK_REALLOC(heap_chunk, heap->chunk, (sizeof_hdr + new_heap_size)); if(!heap->chunk) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") /* Release old space on disk */ /* (Should be safe to free old heap space first, since it's shrinking -QAK) */ H5_CHECK_OVERFLOW(heap->heap_alloc, size_t, hsize_t); H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, old_addr, (hsize_t)heap->heap_alloc); H5E_clear_stack(NULL); /* don't really care if the free failed */ /* Allocate new space on disk */ H5_CHECK_OVERFLOW(new_heap_size, size_t, hsize_t); if(HADDR_UNDEF == (new_addr = H5MF_alloc(f, H5FD_MEM_LHEAP, dxpl_id, (hsize_t)new_heap_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate file space for heap") /* Update heap info*/ heap->addr = new_addr; heap->heap_alloc = new_heap_size; } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5HL_minimize_heap_space() */ /*------------------------------------------------------------------------- * Function: H5HL_serialize * * Purpose: Serialize the heap. This function will eliminate free * blocks at the tail of the heap and also split the block * if it needs to be split for the file. This is so that we * can serialize it correctly. * * Return: Non-negative on success/Negative on failure * * Programmer: Bill Wendling * wendling@ncsa.uiuc.edu * Sept. 16, 2003 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5HL_serialize(H5F_t *f, H5HL_t *heap, uint8_t *buf) { H5HL_free_t *fl; uint8_t *p; herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_serialize) /* check args */ assert(buf); assert(heap); /* serialize the header */ p = buf; fl = heap->freelist; HDmemcpy(p, H5HL_MAGIC, (size_t)H5HL_SIZEOF_MAGIC); p += H5HL_SIZEOF_MAGIC; *p++ = H5HL_VERSION; *p++ = 0; /*reserved*/ *p++ = 0; /*reserved*/ *p++ = 0; /*reserved*/ H5F_ENCODE_LENGTH(f, p, heap->heap_alloc); H5F_ENCODE_LENGTH(f, p, fl ? fl->offset : H5HL_FREE_NULL); H5F_addr_encode(f, &p, heap->addr); /* serialize the free list */ for (; fl; fl = fl->next) { assert (fl->offset == H5HL_ALIGN (fl->offset)); p = heap->chunk + H5HL_SIZEOF_HDR(f) + fl->offset; if (fl->next) { H5F_ENCODE_LENGTH(f, p, fl->next->offset); } else { H5F_ENCODE_LENGTH(f, p, H5HL_FREE_NULL); } H5F_ENCODE_LENGTH(f, p, fl->size); } FUNC_LEAVE_NOAPI(ret_value) } /*------------------------------------------------------------------------- * Function: H5HL_flush * * Purpose: Flushes a heap from memory to disk if it's dirty. Optionally * deletes the heap from memory. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 17 1997 * * Modifications: * rky, 1998-08-28 * Only p0 writes metadata to disk. * * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * Quincey Koziol, 2002-7-180 * Added dxpl parameter to allow more control over I/O from metadata * cache. * * Bill Wendling, 2003-09-16 * Separated out the bit that serializes the heap. * * John Mainzer, 2005-08-10 * Removed call to H5HL_minimize_heap_space(). It does disk space * allocation, which can cause problems if done at flush time. * Instead, disk space allocation/deallocation is now done at * insert/remove time. * * John Mainzer, 2006-08-21 * Added the flags_ptr parameter. This parameter exists to * allow the flush routine to report to the cache if the * entry is resized or renamed as a result of the flush. * *flags_ptr is set to H5C_CALLBACK__NO_FLAGS_SET on entry. * *------------------------------------------------------------------------- */ static herr_t H5HL_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5HL_t *heap, unsigned UNUSED * flags_ptr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5HL_flush, FAIL); /* check arguments */ HDassert( f ); HDassert( H5F_addr_defined(addr) ); HDassert( heap ); if (heap->cache_info.is_dirty) { haddr_t hdr_end_addr; size_t sizeof_hdr = H5HL_SIZEOF_HDR(f); /* cache H5HL header size for file */ /* Write the header */ if (H5HL_serialize(f, heap, heap->chunk) < 0) HGOTO_ERROR(H5E_HEAP, H5E_CANTSERIALIZE, FAIL, "unable to serialize local heap") /* Copy buffer to disk */ hdr_end_addr = addr + (hsize_t)sizeof_hdr; if (H5F_addr_eq(heap->addr, hdr_end_addr)) { /* The header and data are contiguous */ if (H5F_block_write(f, H5FD_MEM_LHEAP, addr, (sizeof_hdr + heap->heap_alloc), dxpl_id, heap->chunk) < 0) HGOTO_ERROR(H5E_HEAP, H5E_WRITEERROR, FAIL, "unable to write heap header and data to file") } else { if (H5F_block_write(f, H5FD_MEM_LHEAP, addr, sizeof_hdr, dxpl_id, heap->chunk) < 0) HGOTO_ERROR(H5E_HEAP, H5E_WRITEERROR, FAIL, "unable to write heap header to file") if (H5F_block_write(f, H5FD_MEM_LHEAP, heap->addr, heap->heap_alloc, dxpl_id, heap->chunk + sizeof_hdr) < 0) HGOTO_ERROR(H5E_HEAP, H5E_WRITEERROR, FAIL, "unable to write heap data to file") } heap->cache_info.is_dirty = FALSE; } /* Should we destroy the memory version? */ if (destroy) { if (H5HL_dest(f,heap) < 0) HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to destroy local heap collection") } done: FUNC_LEAVE_NOAPI(ret_value) } /*------------------------------------------------------------------------- * Function: H5HL_dest * * Purpose: Destroys a heap in memory. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@ncsa.uiuc.edu * Jan 15 2003 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5HL_dest(H5F_t UNUSED *f, H5HL_t *heap) { H5HL_free_t *fl; FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_dest); /* check arguments */ assert(heap); /* Verify that node is clean */ assert (heap->cache_info.is_dirty==FALSE); if(heap->chunk) heap->chunk = H5FL_BLK_FREE(heap_chunk,heap->chunk); while (heap->freelist) { fl = heap->freelist; heap->freelist = fl->next; H5FL_FREE(H5HL_free_t,fl); } H5FL_FREE(H5HL_t,heap); FUNC_LEAVE_NOAPI(SUCCEED); } /* end H5HL_dest() */ /*------------------------------------------------------------------------- * Function: H5HL_clear * * Purpose: Mark a local heap in memory as non-dirty. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@ncsa.uiuc.edu * Mar 20 2003 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5HL_clear(H5F_t *f, H5HL_t *heap, hbool_t destroy) { herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI_NOINIT(H5HL_clear); /* check arguments */ assert(heap); /* Mark heap as clean */ heap->cache_info.is_dirty = FALSE; if (destroy) if (H5HL_dest(f, heap) < 0) HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to destroy local heap collection"); done: FUNC_LEAVE_NOAPI(ret_value); } /* end H5HL_clear() */ /*------------------------------------------------------------------------- * Function: H5HL_compute_size * * Purpose: Compute the size in bytes of the specified instance of * H5HL_t on disk, and return it in *len_ptr. On failure, * the value of *len_ptr is undefined. * * Return: Non-negative on success/Negative on failure * * Programmer: John Mainzer * 5/13/04 * * Modifications: *------------------------------------------------------------------------- */ static herr_t H5HL_compute_size(const H5F_t *f, const H5HL_t *heap, size_t *size_ptr) { FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_compute_size); /* check arguments */ HDassert(f); HDassert(heap); HDassert(size_ptr); *size_ptr = H5HL_SIZEOF_HDR(f) + heap->heap_alloc; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5HL_compute_size() */ /*------------------------------------------------------------------------- * Function: H5HL_read * * Purpose: Reads some object (or part of an object) from the heap * whose address is ADDR in file F. OFFSET is the byte offset * from the beginning of the heap at which to begin reading * and SIZE is the number of bytes to read. * * If BUF is the null pointer then a buffer is allocated by * this function. * * Attempting to read past the end of an object may cause this * function to fail. * * Return: Success: BUF (or the allocated buffer) * * Failure: NULL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 16 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. *------------------------------------------------------------------------- */ #ifdef NOT_YET static void * H5HL_read(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t offset, size_t size, void *buf) { H5HL_t *heap = NULL; void *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5HL_read, NULL); /* check arguments */ assert(f); assert (H5F_addr_defined(addr)); if (NULL == (heap = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_READ))) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "unable to load heap"); assert(offset < heap->heap_alloc); assert(offset + size <= heap->heap_alloc); if (!buf && NULL==(buf = H5MM_malloc(size))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); HDmemcpy(buf, heap->chunk + H5HL_SIZEOF_HDR(f) + offset, size); /* Set return value */ ret_value=buf; done: if (heap && H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, H5AC__NO_FLAGS_SET) != SUCCEED) HDONE_ERROR(H5E_HEAP, H5E_PROTECT, NULL, "unable to release object header"); FUNC_LEAVE_NOAPI(ret_value); } #endif /* NOT_YET */ /*------------------------------------------------------------------------- * Function: H5HL_protect * * Purpose: This function is a wrapper for the H5AC_protect call. The * old H5HL_peek call (which this once was) wasn't "safe" * for FPHDF5. (It'd get a read lock on an object but once * it got that object, it'd release it keeping the old * pointer value, which is no longer valid. This won't work * since the pointer into some metdata block can become * invalid.) * * N.B.: This function is always called in conjunction with * the H5HL_offset_into function. The return from that * function is the proper pointer to the heap's object. This * is done so that the return from this function can be sent * to H5HL_unprotect. * * Return: Success: Ptr to the object. The pointer points to a * chunk of memory large enough to hold the * object from the specified offset (usually the * beginning of the object) to the end of the * object. Do not attempt to read past the end * of the object. * Failure: NULL * * Programmer: Bill Wendling * wendling@ncsa.uiuc.edu * Sept. 17, 2003 * *------------------------------------------------------------------------- */ H5HL_t * H5HL_protect(H5F_t *f, hid_t dxpl_id, haddr_t addr) { H5HL_t *ret_value; FUNC_ENTER_NOAPI(H5HL_protect, NULL) /* check arguments */ HDassert(f); HDassert(H5F_addr_defined(addr)); if(NULL == (ret_value = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_READ))) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, NULL, "unable to load heap") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5HL_protect() */ /*------------------------------------------------------------------------- * Function: H5HL_offset_into * * Purpose: Called directly after the call to H5HL_protect so that * a pointer to the object in the heap can be got. * * Return: Success: Valid pointer. * Failure: NULL * * Programmer: Bill Wendling * wendling@ncsa.uiuc.edu * Sept. 17, 2003 * * Modifications: * *------------------------------------------------------------------------- */ void * H5HL_offset_into(H5F_t *f, const H5HL_t *heap, size_t offset) { /* * We need to have called some other function before this to get a * valid heap pointer. So, this can remain "FUNC_ENTER_NOAPI_NOINIT" */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_offset_into) assert(f); assert(heap); assert(offset < heap->heap_alloc); FUNC_LEAVE_NOAPI(heap->chunk + H5HL_SIZEOF_HDR(f) + offset) } /*------------------------------------------------------------------------- * Function: H5HL_unprotect * * Purpose: Unprotect the data retrieved by the H5HL_protect call. * * Return: Success: SUCCEED * Failure: FAIL * * Programmer: Bill Wendling * wendling@ncsa.uiuc.edu * Sept. 17, 2003 * *------------------------------------------------------------------------- */ herr_t H5HL_unprotect(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, haddr_t addr, unsigned heap_flags) { herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(H5HL_unprotect, FAIL) /* check arguments */ HDassert(f); HDassert(heap); HDassert(H5F_addr_defined(addr)); if(H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, (void *)heap, heap_flags) != SUCCEED) HGOTO_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release object header") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5HL_unprotect() */ /*------------------------------------------------------------------------- * Function: H5HL_remove_free * * Purpose: Removes free list element FL from the specified heap and * frees it. * * Return: NULL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 17 1997 * * Modifications: * *------------------------------------------------------------------------- */ static H5HL_free_t * H5HL_remove_free(H5HL_t *heap, H5HL_free_t *fl) { FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_remove_free); if (fl->prev) fl->prev->next = fl->next; if (fl->next) fl->next->prev = fl->prev; if (!fl->prev) heap->freelist = fl->next; FUNC_LEAVE_NOAPI(H5FL_FREE(H5HL_free_t,fl)); } /*------------------------------------------------------------------------- * Function: H5HL_insert * * Purpose: Inserts a new item into the heap. * * Return: Success: Offset of new item within heap. * * Failure: (size_t)(-1) * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 17 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * John Mainzer, 6/7/05 * Modified code to use the dirtied parameter of * H5AC_unprotect() instead of manipulating the is_dirty * field of the cache info directly. * * John Mainzer, 8/10/05 * Modified code to allocate file space as needed, instead * of allocating it on eviction. * *------------------------------------------------------------------------- */ size_t H5HL_insert(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t buf_size, const void *buf) { H5HL_t *heap = NULL; unsigned heap_flags = H5AC__NO_FLAGS_SET; H5HL_free_t *fl = NULL, *last_fl = NULL; size_t offset = 0; size_t need_size; hbool_t found; size_t sizeof_hdr; /* Cache H5HL header size for file */ size_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5HL_insert, (size_t)(-1)); /* check arguments */ HDassert(f); HDassert(H5F_addr_defined(addr)); HDassert(buf_size > 0); HDassert(buf); if(0 == (f->intent & H5F_ACC_RDWR)) HGOTO_ERROR(H5E_HEAP, H5E_WRITEERROR, (size_t)(-1), "no write intent on file") if(NULL == (heap = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_WRITE))) HGOTO_ERROR(H5E_HEAP, H5E_PROTECT, (size_t)(-1), "unable to load heap") heap_flags |= H5AC__DIRTIED_FLAG; /* Cache this for later */ sizeof_hdr = H5HL_SIZEOF_HDR(f); /* * In order to keep the free list descriptors aligned on word boundaries, * whatever that might mean, we round the size up to the next multiple of * a word. */ need_size = H5HL_ALIGN(buf_size); /* * Look for a free slot large enough for this object and which would * leave zero or at least H5G_SIZEOF_FREE bytes left over. */ for(fl = heap->freelist, found = FALSE; fl; fl = fl->next) { if(fl->size > need_size && fl->size - need_size >= H5HL_SIZEOF_FREE(f)) { /* a big enough free block was found */ offset = fl->offset; fl->offset += need_size; fl->size -= need_size; HDassert(fl->offset == H5HL_ALIGN(fl->offset)); HDassert(fl->size == H5HL_ALIGN(fl->size)); found = TRUE; break; } else if(fl->size == need_size) { /* free block of exact size found */ offset = fl->offset; fl = H5HL_remove_free(heap, fl); found = TRUE; break; } else if(!last_fl || last_fl->offset < fl->offset) { /* track free space that's closest to end of heap */ last_fl = fl; } } /* end for */ /* * If no free chunk was large enough, then allocate more space and * add it to the free list. If the heap ends with a free chunk, we * can extend that free chunk. Otherwise we'll have to make another * free chunk. If the heap must expand, we double its size. */ if(found == FALSE) { size_t need_more; /* How much more space we need */ size_t new_heap_alloc; /* Final size of space allocated for heap */ htri_t can_extend; /* Whether the local heap's data segment on disk can be extended */ /* At least double the heap's size, making certain there's enough room * for the new object */ need_more = MAX(need_size, heap->heap_alloc); /* If there is no last free block or it's not at the end of the heap, * and the amount of space to allocate is not big enough to include at * least the new object and a free-list info, trim down the amount of * space requested to just the amount of space needed. (Generally * speaking, this only occurs when the heap is small -QAK) */ if(!(last_fl && last_fl->offset + last_fl->size == heap->heap_alloc) && (need_more < (need_size + H5HL_SIZEOF_FREE(f)))) need_more = need_size; new_heap_alloc = heap->heap_alloc + need_more; HDassert(heap->heap_alloc < new_heap_alloc); H5_CHECK_OVERFLOW(heap->heap_alloc, size_t, hsize_t); H5_CHECK_OVERFLOW(new_heap_alloc, size_t, hsize_t); /* Check if current heap is extendible */ can_extend = H5MF_can_extend(f, H5FD_MEM_LHEAP, heap->addr, (hsize_t)(heap->heap_alloc), (hsize_t)need_more); if(can_extend < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, (size_t)(-1), "unable to check whether heap can be extended") /* extend the current heap if we can... */ if(can_extend == TRUE) { if(H5MF_extend(f, H5FD_MEM_LHEAP, heap->addr, (hsize_t)(heap->heap_alloc), (hsize_t)need_more) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, (size_t)(-1), "can't extend heap on disk") } /* end if */ else { /* ...if we can't, allocate a new chunk & release the old */ haddr_t new_addr; /* The new allocation may fail -- to avoid the possiblity of * file corruption, allocate the new heap first, and then * deallocate the old. */ /* allocate new disk space for the heap */ if((new_addr = H5MF_alloc(f, H5FD_MEM_LHEAP, dxpl_id, (hsize_t)new_heap_alloc)) == HADDR_UNDEF) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, (size_t)(-1), "unable to allocate file space for heap") /* Release old space on disk */ H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, heap->addr, (hsize_t)heap->heap_alloc); H5E_clear_stack(NULL); /* don't really care if the free failed */ heap->addr = new_addr; } /* end else */ /* If the last free list in the heap is at the end of the heap, extend it */ if(last_fl && last_fl->offset + last_fl->size == heap->heap_alloc) { /* * Increase the size of the last free block. */ offset = last_fl->offset; last_fl->offset += need_size; last_fl->size += need_more - need_size; HDassert(last_fl->offset == H5HL_ALIGN(last_fl->offset)); HDassert(last_fl->size == H5HL_ALIGN(last_fl->size)); if (last_fl->size < H5HL_SIZEOF_FREE(f)) { #ifdef H5HL_DEBUG if (H5DEBUG(HL) && last_fl->size) { fprintf(H5DEBUG(HL), "H5HL: lost %lu bytes at line %d\n", (unsigned long)(last_fl->size), __LINE__); } #endif last_fl = H5HL_remove_free(heap, last_fl); } } /* end if */ else { /* * Create a new free list element large enough that we can * take some space out of it right away. */ offset = heap->heap_alloc; if(need_more - need_size >= H5HL_SIZEOF_FREE(f)) { if(NULL == (fl = H5FL_MALLOC(H5HL_free_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, (size_t)(-1), "memory allocation failed") fl->offset = heap->heap_alloc + need_size; fl->size = need_more - need_size; HDassert(fl->offset == H5HL_ALIGN(fl->offset)); HDassert(fl->size == H5HL_ALIGN(fl->size)); fl->prev = NULL; fl->next = heap->freelist; if (heap->freelist) heap->freelist->prev = fl; heap->freelist = fl; #ifdef H5HL_DEBUG } else if (H5DEBUG(HL) && need_more > need_size) { fprintf(H5DEBUG(HL), "H5HL_insert: lost %lu bytes at line %d\n", (unsigned long)(need_more - need_size), __LINE__); #endif } } /* end else */ #ifdef H5HL_DEBUG if (H5DEBUG(HL)) { fprintf(H5DEBUG(HL), "H5HL: resize mem buf from %lu to %lu bytes\n", (unsigned long)(heap->heap_alloc), (unsigned long)(heap->heap_alloc + need_more)); } #endif heap->heap_alloc = new_heap_alloc; heap->chunk = H5FL_BLK_REALLOC(heap_chunk, heap->chunk, (sizeof_hdr + heap->heap_alloc)); if(NULL == heap->chunk) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, (size_t)(-1), "memory allocation failed") /* Clear new section so junk doesn't appear in the file */ /* (Avoid clearing section which will be overwritten with newly inserted data) */ HDmemset(heap->chunk + sizeof_hdr + offset + buf_size, 0, (new_heap_alloc - (offset + buf_size))); } /* end if */ /* * Copy the data into the heap */ HDmemcpy(heap->chunk + sizeof_hdr + offset, buf, buf_size); /* Set return value */ ret_value = offset; done: if(heap && H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, heap_flags) != SUCCEED) HDONE_ERROR(H5E_HEAP, H5E_PROTECT, (size_t)(-1), "unable to release object header") FUNC_LEAVE_NOAPI(ret_value) } /* H5HL_insert() */ #ifdef NOT_YET /*------------------------------------------------------------------------- * Function: H5HL_write * * Purpose: Writes (overwrites) the object (or part of object) stored * in BUF to the heap at file address ADDR in file F. The * writing begins at byte offset OFFSET from the beginning of * the heap and continues for SIZE bytes. * * Do not partially write an object to create it; the first * write for an object must be for the entire object. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 16 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * John Mainzer, 6/7/05 * Modified code to use the dirtied parameter of * H5AC_unprotect() instead of manipulating the is_dirty * field of the cache info directly. * *------------------------------------------------------------------------- */ static herr_t H5HL_write(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t offset, size_t size, const void *buf) { H5HL_t *heap = NULL; unsigned heap_flags = H5AC__NO_FLAGS_SET; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5HL_write, FAIL); /* check arguments */ assert(f); assert(H5F_addr_defined(addr)); assert(buf); assert (offset==H5HL_ALIGN (offset)); if (0==(f->intent & H5F_ACC_RDWR)) HGOTO_ERROR (H5E_HEAP, H5E_WRITEERROR, FAIL, "no write intent on file"); if (NULL == (heap = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_WRITE))) HGOTO_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to load heap"); assert(offset < heap->heap_alloc); assert(offset + size <= heap->heap_alloc); heap_flags |= H5AC__DIRTIED_FLAG; HDmemcpy(heap->chunk + H5HL_SIZEOF_HDR(f) + offset, buf, size); done: if (heap && H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, heap_flags) != SUCCEED && ret_value != FAIL) HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release object header"); FUNC_LEAVE_NOAPI(ret_value); } #endif /* NOT_YET */ /*------------------------------------------------------------------------- * Function: H5HL_remove * * Purpose: Removes an object or part of an object from the heap at * address ADDR of file F. The object (or part) to remove * begins at byte OFFSET from the beginning of the heap and * continues for SIZE bytes. * * Once part of an object is removed, one must not attempt * to access that part. Removing the beginning of an object * results in the object OFFSET increasing by the amount * truncated. Removing the end of an object results in * object truncation. Removing the middle of an object results * in two separate objects, one at the original offset and * one at the first offset past the removed portion. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 16 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * John Mainzer, 6/7/05 * Modified code to use the dirtied parameter of * H5AC_unprotect() instead of manipulating the is_dirty * field of the cache info directly. * * John Mainzer, 8/10/05 * Modified code to attempt to decrease heap size if the * entry removal results in a free list entry at the end * of the heap that is at least half the size of the heap. * *------------------------------------------------------------------------- */ herr_t H5HL_remove(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, size_t offset, size_t size, unsigned *heap_flags) { H5HL_free_t *fl = NULL; herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5HL_remove, FAIL); /* check arguments */ HDassert(f); HDassert(heap); HDassert(size > 0); HDassert(offset == H5HL_ALIGN(offset)); if(0 == (f->intent & H5F_ACC_RDWR)) HGOTO_ERROR(H5E_HEAP, H5E_WRITEERROR, FAIL, "no write intent on file") size = H5HL_ALIGN(size); HDassert(offset < heap->heap_alloc); HDassert(offset + size <= heap->heap_alloc); fl = heap->freelist; *heap_flags |= H5AC__DIRTIED_FLAG; /* * Check if this chunk can be prepended or appended to an already * free chunk. It might also fall between two chunks in such a way * that all three chunks can be combined into one. */ while(fl) { H5HL_free_t *fl2 = NULL; if((offset + size) == fl->offset) { fl->offset = offset; fl->size += size; HDassert(fl->offset==H5HL_ALIGN (fl->offset)); HDassert(fl->size==H5HL_ALIGN (fl->size)); fl2 = fl->next; while(fl2) { if((fl2->offset + fl2->size) == fl->offset) { fl->offset = fl2->offset; fl->size += fl2->size; HDassert(fl->offset == H5HL_ALIGN (fl->offset)); HDassert(fl->size == H5HL_ALIGN (fl->size)); fl2 = H5HL_remove_free(heap, fl2); if(((fl->offset + fl->size) == heap->heap_alloc ) && ((2 * fl->size) > heap->heap_alloc )) { if(H5HL_minimize_heap_space(f, dxpl_id, heap) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "heap size minimization failed") } HGOTO_DONE(SUCCEED); } fl2 = fl2->next; } if(((fl->offset + fl->size) == heap->heap_alloc) && ((2 * fl->size) > heap->heap_alloc)) { if(H5HL_minimize_heap_space(f, dxpl_id, heap) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "heap size minimization failed") } HGOTO_DONE(SUCCEED); } else if(fl->offset + fl->size == offset) { fl->size += size; fl2 = fl->next; HDassert(fl->size==H5HL_ALIGN (fl->size)); while(fl2) { if(fl->offset + fl->size == fl2->offset) { fl->size += fl2->size; HDassert(fl->size==H5HL_ALIGN (fl->size)); fl2 = H5HL_remove_free(heap, fl2); if(((fl->offset + fl->size) == heap->heap_alloc) && ((2 * fl->size) > heap->heap_alloc)) { if(H5HL_minimize_heap_space(f, dxpl_id, heap) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "heap size minimization failed") } HGOTO_DONE(SUCCEED); } fl2 = fl2->next; } if(((fl->offset + fl->size) == heap->heap_alloc) && ((2 * fl->size) > heap->heap_alloc)) { if(H5HL_minimize_heap_space(f, dxpl_id, heap) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "heap size minimization failed") } HGOTO_DONE(SUCCEED); } fl = fl->next; } /* end while */ /* * The amount which is being removed must be large enough to * hold the free list data. If not, the freed chunk is forever * lost. */ if(size < H5HL_SIZEOF_FREE(f)) { #ifdef H5HL_DEBUG if(H5DEBUG(HL)) { fprintf(H5DEBUG(HL), "H5HL: lost %lu bytes\n", (unsigned long) size); } #endif HGOTO_DONE(SUCCEED); } /* end if */ /* * Add an entry to the free list. */ if(NULL == (fl = H5FL_MALLOC(H5HL_free_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") fl->offset = offset; fl->size = size; HDassert(fl->offset == H5HL_ALIGN(fl->offset)); HDassert(fl->size == H5HL_ALIGN(fl->size)); fl->prev = NULL; fl->next = heap->freelist; if(heap->freelist) heap->freelist->prev = fl; heap->freelist = fl; if(((fl->offset + fl->size) == heap->heap_alloc) && ((2 * fl->size) > heap->heap_alloc)) { if(H5HL_minimize_heap_space(f, dxpl_id, heap) < 0) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "heap size minimization failed") } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value); } /* end H5HL_remove() */ /*------------------------------------------------------------------------- * Function: H5HL_delete * * Purpose: Deletes a local heap from disk, freeing disk space used. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@ncsa.uiuc.edu * Mar 22 2003 * * Modifications: * * John Mainzer - 6/17/05 * Modified function to use the new dirtied parmeter of * H5AC_unprotect(), which allows management of the is_dirty * field of the cache info to be moved into the cache code. * *------------------------------------------------------------------------- */ herr_t H5HL_delete(H5F_t *f, hid_t dxpl_id, haddr_t addr) { H5HL_t *heap = NULL; size_t sizeof_hdr; /* Cache H5HL header size for file */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5HL_delete, FAIL); /* check arguments */ assert(f); assert(H5F_addr_defined(addr)); /* Check for write access */ if (0==(f->intent & H5F_ACC_RDWR)) HGOTO_ERROR (H5E_HEAP, H5E_WRITEERROR, FAIL, "no write intent on file"); /* Cache this for later */ sizeof_hdr= H5HL_SIZEOF_HDR(f); /* Get heap pointer */ if (NULL == (heap = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_WRITE))) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load heap"); /* Check if the heap is contiguous on disk */ assert(!H5F_addr_overflow(addr,sizeof_hdr)); if(H5F_addr_eq(heap->addr,addr+sizeof_hdr)) { /* Free the contiguous local heap in one call */ H5_CHECK_OVERFLOW(sizeof_hdr+heap->heap_alloc,size_t,hsize_t); if (H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, addr, (hsize_t)(sizeof_hdr+heap->heap_alloc))<0) HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free contiguous local heap"); } /* end if */ else { /* Free the local heap's header */ H5_CHECK_OVERFLOW(sizeof_hdr,size_t,hsize_t); if (H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, addr, (hsize_t)sizeof_hdr)<0) HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free local heap header"); /* Free the local heap's data */ H5_CHECK_OVERFLOW(heap->heap_alloc,size_t,hsize_t); if (H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, heap->addr, (hsize_t)heap->heap_alloc)<0) HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free local heap data"); } /* end else */ /* Release the local heap metadata from the cache */ if (H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, H5AC__DIRTIED_FLAG | H5C__DELETED_FLAG)<0) { heap = NULL; HGOTO_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release local heap"); } heap = NULL; done: if (heap && H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, H5AC__NO_FLAGS_SET)<0) HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release local heap"); FUNC_LEAVE_NOAPI(ret_value); } /* end H5HL_delete() */ /*------------------------------------------------------------------------- * Function: H5HL_get_size * * Purpose: Retrieves the current size of a heap * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@ncsa.uiuc.edu * Nov 7 2005 * *------------------------------------------------------------------------- */ herr_t H5HL_get_size(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t *size) { H5HL_t *heap = NULL; /* Heap to query */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5HL_get_size, FAIL) /* check arguments */ HDassert(f); HDassert(H5F_addr_defined(addr)); HDassert(size); /* Get heap pointer */ if(NULL == (heap = H5AC_protect(f, dxpl_id, H5AC_LHEAP, addr, NULL, NULL, H5AC_READ))) HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load heap") /* Set the size to return */ *size = heap->heap_alloc; done: if(heap && H5AC_unprotect(f, dxpl_id, H5AC_LHEAP, addr, heap, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release local heap") FUNC_LEAVE_NOAPI(ret_value) } /* end H5HL_get_size() */