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Diffstat (limited to 'src/H5Oshared.c')
| -rw-r--r-- | src/H5Oshared.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/H5Oshared.c b/src/H5Oshared.c new file mode 100644 index 0000000..a62a562 --- /dev/null +++ b/src/H5Oshared.c @@ -0,0 +1,184 @@ +/* + * Copyright (C) 1998 NCSA + * All rights reserved. + * + * Programmer: Robb Matzke <matzke@llnl.gov> + * Wednesday, April 1, 1998 + * + * Purpose: Functions that operate on a shared message. The shared + * message doesn't ever actually appear in the object header as + * a normal message. Instead, if a message is shared, the + * H5O_FLAG_SHARED bit is set and the message body is that + * defined here for H5O_SHARED. The message ID is the ID of the + * pointed-to message and the pointed-to message is stored in + * the global heap. + */ +#include <H5private.h> +#include <H5Eprivate.h> +#include <H5MMprivate.h> +#include <H5Oprivate.h> + +static void *H5O_shared_decode (H5F_t*, const uint8*, H5HG_t *hobj); +static herr_t H5O_shared_encode (H5F_t*, uint8*, const void*); +static size_t H5O_shared_size (H5F_t*, const void*); +static herr_t H5O_shared_debug (H5F_t*, const void*, FILE*, intn, intn); + +/* This message derives from H5O */ +const H5O_class_t H5O_SHARED[1] = {{ + H5O_SHARED_ID, /*message id number */ + "shared", /*message name for debugging */ + sizeof(H5O_shared_t), /*native message size */ + H5O_shared_decode, /*decode method */ + H5O_shared_encode, /*encode method */ + NULL, /*no copy method */ + H5O_shared_size, /*size method */ + NULL, /*no reset method */ + NULL, /*no share method */ + H5O_shared_debug, /*debug method */ +}}; + +/* Interface initialization */ +#define PABLO_MASK H5O_shared_mask +static hbool_t interface_initialize_g = FALSE; +#define INTERFACE_INIT NULL + + +/*------------------------------------------------------------------------- + * Function: H5O_shared_decode + * + * Purpose: Decodes a shared object message and returns it. + * + * Return: Success: Ptr to a new shared object message. + * + * Failure: NULL + * + * Programmer: Robb Matzke + * Thursday, April 2, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static void * +H5O_shared_decode (H5F_t *f, const uint8 *buf, H5HG_t *hobj) +{ + H5O_shared_t *mesg; + + FUNC_ENTER (H5O_shared_decode, NULL); + + /* Check args */ + assert (f); + assert (buf); + assert (!hobj || !H5HG_defined (hobj)); + + /* Decode */ + mesg = H5MM_xcalloc (1, sizeof *mesg); + H5F_addr_decode (f, &buf, &(mesg->addr)); + INT32DECODE (buf, mesg->idx); + + FUNC_LEAVE (mesg); +} + + +/*------------------------------------------------------------------------- + * Function: H5O_shared_encode + * + * Purpose: Encodes message _MESG into buffer BUF. + * + * Return: Success: SUCCEED + * + * Failure: FAIL + * + * Programmer: Robb Matzke + * Thursday, April 2, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static herr_t +H5O_shared_encode (H5F_t *f, uint8 *buf/*out*/, const void *_mesg) +{ + const H5O_shared_t *mesg = (const H5O_shared_t *)_mesg; + + FUNC_ENTER (H5O_shared_encode, FAIL); + + /* Check args */ + assert (f); + assert (buf); + assert (mesg); + + /* Encode */ + H5F_addr_encode (f, &buf, &(mesg->addr)); + INT32ENCODE (buf, mesg->idx); + + FUNC_LEAVE (SUCCEED); +} + + +/*------------------------------------------------------------------------- + * Function: H5O_shared_size + * + * Purpose: Returns the length of a shared object message. + * + * Return: Success: Length + * + * Failure: 0 + * + * Programmer: Robb Matzke + * Thursday, April 2, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static size_t +H5O_shared_size (H5F_t *f, const void *_mesg) +{ + FUNC_ENTER (H5O_shared_size, 0); + FUNC_LEAVE (H5F_SIZEOF_ADDR(f)+4); +} + + +/*------------------------------------------------------------------------- + * Function: H5O_shared_debug + * + * Purpose: Prints debugging info for the message + * + * Return: Success: SUCCEED + * + * Failure: FAIL + * + * Programmer: Robb Matzke + * Thursday, April 2, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static herr_t +H5O_shared_debug (H5F_t *f, const void *_mesg, FILE *stream, intn indent, + intn fwidth) +{ + const H5O_shared_t *mesg = (const H5O_shared_t *)_mesg; + + FUNC_ENTER (H5O_shared_debug, FAIL); + + /* Check args */ + assert (f); + assert (mesg); + assert (stream); + assert (indent>=0); + assert (fwidth>=0); + + fprintf (stream, "%*s%-*s ", indent, "", fwidth, + "Collection address:"); + H5F_addr_print (stream, &(mesg->addr)); + fprintf (stream, "\n"); + + fprintf (stream, "%*s%-*s %d\n", indent, "", fwidth, + "Object ID within collection:", + mesg->idx); + + FUNC_LEAVE (SUCCEED); +} |