[svn-r418] ./html/Files.html

./src/H5F.c
./src/HFcore.c
./src/H5Ffamily.c
./src/H5Flow.c
./src/H5Fmpio.c
./src/H5Fprivate.h
./src/H5Fsec2.c
./src/H5Fsplit.c
./src/H5Fstdio.c
./src/H5MF.c
./src/H5P.c
./src/H5Ppublic.h
	Added H5Pset_alignment() so that it is now possible to align
	file allocation requests on application-specified
	boundaries. Any request >= the specified threshold will begin
	on an address which is a multiple of the specified
	alignment. Defaults are one for threshold and alignment. The
	alignment is done on relative addresses, so the size of the
	user block can affect the location of the data in the file.

./src/H5D.c
./src/dsets.c
	Added a test for, and fixed the data space caching bug in
	datasets.  Extending a dataset through one handle will cause
	all other handles to the same dataset to get the new dataset
	size.

./src/H5S.c
./src/H5Sprivate.h
	Removed an unused argument from H5S_read() which duplicated
	information from the other argument.

./config/linux
	Made `--enable-parallel' the default on my system.  It used to
	be that way before but then I accidently turned it off and
	forgot about it.

./src/H5Fmpio.c
	Qualified some function arguments with __unused__.  Changed a
	couple places where NULL was returned on error for herr_t
	functions.

./src/H5P.c
	Removed unused autos from H5Pset_mpi().

1 files changed, 19 insertions, 2 deletions

diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 5b0ec5b..dcf5e69 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -242,6 +242,8 @@ typedef struct H5F_access_t {
     intn	mdc_nelmts;	/* Size of meta data cache (nelmts)	*/
     size_t	rdcc_nbytes;	/* Size of raw data chunk cache	(bytes)	*/
     double	rdcc_w0;	/* Preempt read chunks first? [0.0..1.0]*/
+    hsize_t	threshold;	/* Threshold for alignment		*/
+    hsize_t	alignment;	/* Alignment				*/
     H5F_driver_t driver;	/* Low level file driver		*/
     union {
 
@@ -291,6 +293,13 @@ typedef enum {
     H5F_OP_READ			/* Last operation was a read		*/
 } H5F_fileop_t;
 
+/* A free-list entry */
+#define H5MF_NFREE 32		/*size of free block array		*/
+typedef struct H5MF_free_t {
+    haddr_t	addr;		/*file address				*/
+    hsize_t	size;		/*size of free area			*/
+} H5MF_free_t;
+
 /*
  * Define the low-level file interface.
  */
@@ -312,7 +321,10 @@ typedef struct H5F_low_class_t {
 			 const H5F_access_t *access_parms);
     herr_t	(*extend)(struct H5F_low_t *lf,
 			  const H5F_access_t *access_parms,
-			  intn op, hsize_t size, haddr_t *addr);
+			  intn op, hsize_t size, haddr_t *addr/*out*/);
+    intn        (*alloc)(struct H5F_low_t *lf, intn op, hsize_t alignment,
+			 hsize_t threshold, size_t size, H5MF_free_t *blk,
+			 haddr_t *addr/*out*/);
 } H5F_low_class_t;
 
 typedef struct H5F_low_t {
@@ -423,6 +435,8 @@ typedef struct H5F_file_t {
     intn	ncwfs;		/* Num entries on cwfs list		*/
     struct H5HG_heap_t **cwfs;	/* Global heap cache			*/
     H5F_rdcc_t	rdcc;		/* Raw data chunk cache			*/
+    intn	fl_nfree;	/*number of free blocks in array	*/
+    H5MF_free_t fl_free[H5MF_NFREE]; /*free block array			*/
 } H5F_file_t;
 
 /*
@@ -536,8 +550,11 @@ herr_t H5F_block_write(H5F_t *f, const haddr_t *addr, hsize_t size,
 /* Functions that operate directly on low-level files */
 const H5F_low_class_t *H5F_low_class (H5F_driver_t driver);
 herr_t H5F_low_extend(H5F_low_t *lf, const H5F_access_t *access_parms,
-		      intn op, hsize_t size, haddr_t *addr);
+		      intn op, hsize_t size, haddr_t *addr/*out*/);
 herr_t H5F_low_seteof(H5F_low_t *lf, const haddr_t *addr);
+intn H5F_low_alloc (H5F_low_t *lf, intn op, hsize_t alignment,
+		    hsize_t threshold, size_t size, H5MF_free_t *blk,
+		    haddr_t *addr/*out*/);
 hbool_t H5F_low_access(const H5F_low_class_t *type, const char *name,
 		       const H5F_access_t *access_parms, int mode,
 		       H5F_search_t *key);