[svn-r17155] Description:

	Bring r17154 from 'revise_chunks' branch to trunk:

	Add fixed array data structure.  (For initial use as a chunk index)

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x,
                                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.5.7 (amazon) in debug mode
        Mac OS X/32 10.5.7 (amazon) w/C++ & FORTRAN, w/threadsafe,
                                in production mode

1 files changed, 312 insertions, 0 deletions

diff --git a/src/H5FAdblkpage.c b/src/H5FAdblkpage.c
new file mode 100644
index 0000000..dde299f
--- /dev/null
+++ b/src/H5FAdblkpage.c
@@ -0,0 +1,312 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * 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://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*-------------------------------------------------------------------------
+ *
+ * Created:		H5FAdblkpage.c
+ *
+ * Purpose:		Data block page routines for fixed array.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/**********************/
+/* Module Declaration */
+/**********************/
+
+#define H5FA_MODULE
+
+
+/***********************/
+/* Other Packages Used */
+/***********************/
+
+
+/***********/
+/* Headers */
+/***********/
+#include "H5private.h"		/* Generic Functions			*/
+#include "H5Eprivate.h"		/* Error handling		  	*/
+#include "H5FApkg.h"		/* Fixed Arrays				*/
+#include "H5FLprivate.h"	/* Free Lists                           */
+
+
+/****************/
+/* Local Macros */
+/****************/
+
+
+/******************/
+/* Local Typedefs */
+/******************/
+
+
+/********************/
+/* Package Typedefs */
+/********************/
+
+
+/********************/
+/* Local Prototypes */
+/********************/
+
+
+/*********************/
+/* Package Variables */
+/*********************/
+
+
+/*****************************/
+/* Library Private Variables */
+/*****************************/
+
+
+/*******************/
+/* Local Variables */
+/*******************/
+
+/* Declare a free list to manage the H5FA_dblk_page_t struct */
+H5FL_DEFINE_STATIC(H5FA_dblk_page_t);
+
+/* Declare a free list to manage the page elements */
+H5FL_BLK_DEFINE(page_elmts);
+
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5FA__dblk_page_alloc
+ *
+ * Purpose:	Allocate fixed array data block page
+ *
+ * Return:	Non-NULL pointer to data block on success/NULL on failure
+ *
+ * Programmer:	Vailin Choi
+ *              Thursday, April 30, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(PKG, ERR,
+H5FA_dblk_page_t *, NULL, NULL,
+H5FA__dblk_page_alloc(H5FA_hdr_t *hdr, size_t nelmts))
+
+    /* Local variables */
+    H5FA_dblk_page_t *dblk_page = NULL;          /* Fixed array data block page */
+
+    /* Check arguments */
+    HDassert(hdr);
+
+    /* Allocate memory for the data block */
+    if(NULL == (dblk_page = H5FL_CALLOC(H5FA_dblk_page_t)))
+	H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block page")
+
+    /* Share common array information */
+    if(H5FA__hdr_incr(hdr) < 0)
+	H5E_THROW(H5E_CANTINC, "can't increment reference count on shared array header")
+    dblk_page->hdr = hdr;
+
+    /* Set non-zero internal fields */
+    dblk_page->nelmts = nelmts;
+
+    /* Allocate buffer for elements in data block page */
+    if(NULL == (dblk_page->elmts = H5FL_BLK_MALLOC(page_elmts, nelmts * hdr->cparam.cls->nat_elmt_size)))
+        H5E_THROW(H5E_CANTALLOC, "memory allocation failed for data block page element buffer")
+
+    /* Set the return value */
+    ret_value = dblk_page;
+
+CATCH
+
+    if(!ret_value)
+        if(dblk_page && H5FA__dblk_page_dest(dblk_page) < 0)
+            H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block page")
+
+END_FUNC(PKG)   /* end H5FA__dblk_page_alloc() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5FA__dblk_page_create
+ *
+ * Purpose:	Creates a new fixed array data block page in the file
+ *
+ * Return:	Valid file address on success/HADDR_UNDEF on failure
+ *
+ * Programmer:	Vailin Choi
+ *              Thursday, April 30, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(PKG, ERR,
+herr_t, SUCCEED, FAIL,
+H5FA__dblk_page_create(H5FA_hdr_t *hdr, hid_t dxpl_id, haddr_t addr, size_t nelmts))
+
+    /* Local variables */
+    H5FA_dblk_page_t *dblk_page = NULL;      /* Fixed array data block page */
+
+#ifdef H5FA_DEBUG
+HDfprintf(stderr, "%s: Called, addr = %a\n", FUNC, addr);
+#endif /* H5FA_DEBUG */
+
+    /* Sanity check */
+    HDassert(hdr);
+
+    /* Allocate the data block page */
+    if(NULL == (dblk_page = H5FA__dblk_page_alloc(hdr, nelmts)))
+	H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block page")
+
+    /* Set info about data block page on disk */
+    dblk_page->addr = addr;
+    dblk_page->size = H5FA_DBLK_PAGE_SIZE(dblk_page, nelmts);
+#ifdef H5FA_DEBUG 
+HDfprintf(stderr, "%s: dblk_page->size = %Zu\n", FUNC, dblk_page->size);
+#endif /* H5FA_DEBUG */
+
+    /* Clear any elements in data block page to fill value */
+    if((hdr->cparam.cls->fill)(dblk_page->elmts, nelmts) < 0)
+        H5E_THROW(H5E_CANTSET, "can't set fixed array data block page elements to class's fill value")
+
+    /* Cache the new fixed array data block page */
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
+	H5E_THROW(H5E_CANTINSERT, "can't add fixed array data block page to cache")
+
+CATCH
+    if(ret_value < 0)
+        if(dblk_page) {
+            /* Destroy data block page */
+            if(H5FA__dblk_page_dest(dblk_page) < 0)
+                H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block page")
+        } /* end if */
+
+END_FUNC(PKG)   /* end H5FA__dblk_page_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5FA__dblk_page_protect
+ *
+ * Purpose:	Convenience wrapper around protecting fixed array data
+ *              block page
+ *
+ * Return:	Non-NULL pointer to data block page on success/NULL on failure
+ *
+ * Programmer:	Vailin Choi
+ *              Thursday, April 30, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(PKG, ERR,
+H5FA_dblk_page_t *, NULL, NULL,
+H5FA__dblk_page_protect(H5FA_hdr_t *hdr, hid_t dxpl_id, haddr_t dblk_page_addr,
+    size_t dblk_page_nelmts, H5AC_protect_t rw))
+
+    /* Local variables */
+    H5FA_dblk_page_load_ud_t load_ud;      /* Information needed for loading data block page */
+
+#ifdef H5FA_DEBUG
+HDfprintf(stderr, "%s: Called\n", FUNC);
+#endif /* H5FA_DEBUG */
+
+    /* Sanity check */
+    HDassert(hdr);
+    HDassert(H5F_addr_defined(dblk_page_addr));
+
+    /* Set up user data */
+    load_ud.nelmts = dblk_page_nelmts;
+
+    /* Protect the data block page */
+    if(NULL == (ret_value = (H5FA_dblk_page_t *)H5AC_protect(hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page_addr, &load_ud, hdr, rw)))
+        H5E_THROW(H5E_CANTPROTECT, "unable to protect fixed array data block page, address = %llu", (unsigned long long)dblk_page_addr)
+
+CATCH
+
+END_FUNC(PKG)   /* end H5FA__dblk_page_protect() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5FA__dblk_page_unprotect
+ *
+ * Purpose:	Convenience wrapper around unprotecting fixed array
+ *              data block page
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Vailin Choi
+ *              Thursday, April 30, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(PKG, ERR,
+herr_t, SUCCEED, FAIL,
+H5FA__dblk_page_unprotect(H5FA_dblk_page_t *dblk_page, hid_t dxpl_id,
+    unsigned cache_flags))
+
+    /* Local variables */
+
+#ifdef H5FA_DEBUG
+HDfprintf(stderr, "%s: Called\n", FUNC);
+#endif /* H5FA_DEBUG */
+
+    /* Sanity check */
+    HDassert(dblk_page);
+
+    /* Unprotect the data block page */
+    if(H5AC_unprotect(dblk_page->hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, cache_flags) < 0)
+        H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect fixed array data block page, address = %llu", (unsigned long long)dblk_page->addr)
+
+CATCH
+
+END_FUNC(PKG)   /* end H5FA__dblk_page_unprotect() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5FA__dblk_page_dest
+ *
+ * Purpose:	Destroys a fixed array data block page in memory.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Vailin Choi
+ *              Thursday, April 30, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+/* ARGSUSED */
+BEGIN_FUNC(PKG, ERR,
+herr_t, SUCCEED, FAIL,
+H5FA__dblk_page_dest(H5FA_dblk_page_t *dblk_page))
+
+    /* Sanity check */
+    HDassert(dblk_page);
+
+    /* Check if header field has been initialized */
+    if(dblk_page->hdr) {
+        /* Check if buffer for data block page elements has been initialized */
+        if(dblk_page->elmts) {
+            /* Free buffer for data block page elements */
+	    (void) H5FL_BLK_FREE(page_elmts, dblk_page->elmts);
+            dblk_page->elmts = NULL;
+        } /* end if */
+
+        /* Decrement reference count on shared info */
+        if(H5FA__hdr_decr(dblk_page->hdr) < 0)
+            H5E_THROW(H5E_CANTDEC, "can't decrement reference count on shared array header")
+        dblk_page->hdr = NULL;
+    } /* end if */
+
+    /* Free the data block page itself */
+    (void)H5FL_FREE(H5FA_dblk_page_t, dblk_page);
+
+CATCH
+
+END_FUNC(PKG)   /* end H5FA__dblk_page_dest() */
+