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Implement ID creation optimization for container datatype conversions
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Makes the datatype conversion context object available during both the
initialization and conversion processes for a datatype conversion
function, allowing the compound, variable-length and array datatype
conversion functions to avoid creating IDs for the datatypes when they
aren't necessary

Adds internal H5CX_pushed routine to determine if an API context is
available to retrieve values from

Also adds error checking to several places in H5T.c and H5Tconv.c where
the code had previously assumed object close operations would succeed
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@jhendersonHDF
jhendersonHDF committed Mar 11, 2024
1 parent ac95411 commit af162e9
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Showing 5 changed files with 494 additions and 305 deletions.
22 changes: 22 additions & 0 deletions src/H5CX.c
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Original file line number Diff line number Diff line change
Expand Up @@ -759,6 +759,28 @@ H5CX__get_context(void)
} /* end H5CX__get_context() */
#endif /* H5_HAVE_THREADSAFE */

/*-------------------------------------------------------------------------
* Function: H5CX_pushed
*
* Purpose: Returns whether or not an API context has been pushed.
*
* Return: true/false
*
*-------------------------------------------------------------------------
*/
bool
H5CX_pushed(void)
{
H5CX_node_t **head = NULL; /* Pointer to head of API context list */

FUNC_ENTER_NOAPI_NOERR

head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */
assert(head);

FUNC_LEAVE_NOAPI(*head != NULL);
}

/*-------------------------------------------------------------------------
* Function: H5CX__push_common
*
Expand Down
1 change: 1 addition & 0 deletions src/H5CXprivate.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@ typedef struct H5CX_state_t {
H5_DLL herr_t H5CX_push(void);
H5_DLL herr_t H5CX_pop(bool update_dxpl_props);
#endif /* H5private_H */
H5_DLL bool H5CX_pushed(void);
H5_DLL void H5CX_push_special(void);
H5_DLL bool H5CX_is_def_dxpl(void);

Expand Down
164 changes: 106 additions & 58 deletions src/H5T.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2495,6 +2495,17 @@ H5T__register(H5T_pers_t pers, const char *name, H5T_t *src, H5T_t *dst, H5T_con
} /* end if */
} /* end if */
else {
H5T_conv_ctx_t tmp_ctx = {0};

/*
* Get the datatype conversion exception callback structure.
* Note that we have to first check if an API context has been
* pushed, since we could have arrived here during library
* initialization of the H5T package.
*/
if (!conv->is_app && H5CX_pushed() && (H5CX_get_dt_conv_cb(&tmp_ctx.u.init.cb_struct) < 0))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "unable to get conversion exception callback");

/* Add function to end of soft list */
if ((size_t)H5T_g.nsoft >= H5T_g.asoft) {
size_t na = MAX(32, 2 * H5T_g.asoft);
Expand Down Expand Up @@ -2542,19 +2553,27 @@ H5T__register(H5T_pers_t pers, const char *name, H5T_t *src, H5T_t *dst, H5T_con
"unable to register ID for destination datatype");

if ((conv->u.app_func)(tmp_sid, tmp_did, &cdata, 0, 0, 0, NULL, NULL, H5CX_get_dxpl()) < 0) {
H5I_dec_ref(tmp_sid);
H5I_dec_ref(tmp_did);
if (H5I_dec_ref(tmp_sid) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTDEC, FAIL,
"unable to decrement reference count on temporary ID");
if (H5I_dec_ref(tmp_did) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTDEC, FAIL,
"unable to decrement reference count on temporary ID");
tmp_sid = tmp_did = H5I_INVALID_HID;
tmp_stype = tmp_dtype = NULL;
H5E_clear_stack(NULL);
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, FAIL, "unable to clear current error stack");
continue;
} /* end if */
} /* end if */
else if ((conv->u.lib_func)(tmp_stype, tmp_dtype, &cdata, NULL, 0, 0, 0, NULL, NULL) < 0) {
H5T_close(tmp_stype);
H5T_close(tmp_dtype);
else if ((conv->u.lib_func)(tmp_stype, tmp_dtype, &cdata, &tmp_ctx, 0, 0, 0, NULL, NULL) < 0) {
if (H5T_close(tmp_stype) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close temporary datatype");
if (H5T_close(tmp_dtype) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close temporary datatype");
tmp_stype = tmp_dtype = NULL;
H5E_clear_stack(NULL);
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, FAIL, "unable to clear current error stack");
continue;
} /* end if */

Expand Down Expand Up @@ -2599,8 +2618,12 @@ H5T__register(H5T_pers_t pers, const char *name, H5T_t *src, H5T_t *dst, H5T_con
(size_t)old_path->conv.u.lib_func, old_path->name);
#endif
} /* end if */
(void)H5T_close_real(old_path->src);
(void)H5T_close_real(old_path->dst);

if (H5T_close_real(old_path->src) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close datatype");
if (H5T_close_real(old_path->dst) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close datatype");

old_path = H5FL_FREE(H5T_path_t, old_path);

/* Release temporary atoms */
Expand Down Expand Up @@ -2628,17 +2651,18 @@ H5T__register(H5T_pers_t pers, const char *name, H5T_t *src, H5T_t *dst, H5T_con
}

/* We don't care about any failures during the freeing process */
H5E_clear_stack(NULL);
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, FAIL, "unable to clear current error stack");
} /* end for */
} /* end else */

done:
if (ret_value < 0) {
if (new_path) {
if (new_path->src)
(void)H5T_close_real(new_path->src);
if (new_path->dst)
(void)H5T_close_real(new_path->dst);
if (new_path->src && (H5T_close_real(new_path->src) < 0))
HDONE_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close datatype");
if (new_path->dst && (H5T_close_real(new_path->dst) < 0))
HDONE_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close datatype");
new_path = H5FL_FREE(H5T_path_t, new_path);
} /* end if */
} /* end if */
Expand Down Expand Up @@ -3957,14 +3981,16 @@ H5T__free(H5T_t *dt)

/* Don't free locked datatypes */
if (H5T_STATE_IMMUTABLE == dt->shared->state)
HGOTO_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, FAIL, "unable to close immutable datatype");
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL, "unable to close immutable datatype");

/* Close the datatype */
switch (dt->shared->type) {
case H5T_COMPOUND:
for (i = 0; i < dt->shared->u.compnd.nmembs; i++) {
dt->shared->u.compnd.memb[i].name = (char *)H5MM_xfree(dt->shared->u.compnd.memb[i].name);
(void)H5T_close_real(dt->shared->u.compnd.memb[i].type);
if (H5T_close_real(dt->shared->u.compnd.memb[i].type) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, FAIL,
"unable to close datatype for compound member");
}
dt->shared->u.compnd.memb = (H5T_cmemb_t *)H5MM_xfree(dt->shared->u.compnd.memb);
dt->shared->u.compnd.nmembs = 0;
Expand Down Expand Up @@ -4252,7 +4278,8 @@ H5T__set_size(H5T_t *dt, size_t size)
/* Get a copy of unsigned char type as the base/parent type */
if (NULL == (base = (H5T_t *)H5I_object(H5T_NATIVE_UCHAR)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid base datatype");
dt->shared->parent = H5T_copy(base, H5T_COPY_ALL);
if (NULL == (dt->shared->parent = H5T_copy(base, H5T_COPY_ALL)))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "unable to copy base datatype");

/* change this datatype into a VL string */
dt->shared->type = H5T_VLEN;
Expand Down Expand Up @@ -4920,19 +4947,20 @@ H5T_path_find(const H5T_t *src, const H5T_t *dst)
static H5T_path_t *
H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_conv_func_t *conv)
{
int lt, rt; /* left and right edges */
int md; /* middle */
int cmp; /* comparison result */
int old_npaths; /* Previous number of paths in table */
H5T_path_t *table = NULL; /* path existing in the table */
H5T_path_t *path = NULL; /* new path */
H5T_t *tmp_stype = NULL; /* temporary source datatype */
H5T_t *tmp_dtype = NULL; /* temporary destination datatype */
hid_t src_id = H5I_INVALID_HID; /* source datatype identifier */
hid_t dst_id = H5I_INVALID_HID; /* destination datatype identifier */
int i; /* counter */
int nprint = 0; /* lines of output printed */
H5T_path_t *ret_value = NULL; /* Return value */
H5T_conv_ctx_t tmp_ctx = {0}; /* temporary conversion context object */
int lt, rt; /* left and right edges */
int md; /* middle */
int cmp; /* comparison result */
int old_npaths; /* Previous number of paths in table */
H5T_path_t *table = NULL; /* path existing in the table */
H5T_path_t *path = NULL; /* new path */
H5T_t *tmp_stype = NULL; /* temporary source datatype */
H5T_t *tmp_dtype = NULL; /* temporary destination datatype */
hid_t src_id = H5I_INVALID_HID; /* source datatype identifier */
hid_t dst_id = H5I_INVALID_HID; /* destination datatype identifier */
int i; /* counter */
int nprint = 0; /* lines of output printed */
H5T_path_t *ret_value = NULL; /* Return value */

FUNC_ENTER_PACKAGE

Expand All @@ -4942,6 +4970,15 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co
assert(dst);
assert(dst->shared);

/*
* Get the datatype conversion exception callback structure.
* Note that we have to first check if an API context has been
* pushed, since we could have arrived here during library
* initialization of the H5T package.
*/
if (H5CX_pushed() && (H5CX_get_dt_conv_cb(&tmp_ctx.u.init.cb_struct) < 0))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, NULL, "unable to get conversion exception callback");

/*
* Make sure the first entry in the table is the no-op conversion path.
*/
Expand All @@ -4957,13 +4994,15 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co
H5T_g.path[0]->conv.is_app = false;
H5T_g.path[0]->conv.u.lib_func = H5T__conv_noop;
H5T_g.path[0]->cdata.command = H5T_CONV_INIT;
if (H5T__conv_noop(NULL, NULL, &(H5T_g.path[0]->cdata), NULL, 0, 0, 0, NULL, NULL) < 0) {
if (H5T__conv_noop(NULL, NULL, &(H5T_g.path[0]->cdata), &tmp_ctx, 0, 0, 0, NULL, NULL) < 0) {
#ifdef H5T_DEBUG
if (H5DEBUG(T))
fprintf(H5DEBUG(T), "H5T: unable to initialize no-op conversion function (ignored)\n");
#endif
H5E_clear_stack(NULL); /*ignore the error*/
} /* end if */
/* Ignore any errors from the conversion function */
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to clear current error stack");
} /* end if */
H5T_g.path[0]->is_noop = true;
H5T_g.npaths = 1;
} /* end if */
Expand Down Expand Up @@ -5056,7 +5095,7 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co
if ((conv->u.app_func)(src_id, dst_id, &(path->cdata), 0, 0, 0, NULL, NULL, H5CX_get_dxpl()) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "unable to initialize conversion function");
} /* end if */
else if ((conv->u.lib_func)(tmp_stype, tmp_dtype, &(path->cdata), NULL, 0, 0, 0, NULL, NULL) < 0)
else if ((conv->u.lib_func)(tmp_stype, tmp_dtype, &(path->cdata), &tmp_ctx, 0, 0, 0, NULL, NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "unable to initialize conversion function");

if (src_id >= 0) {
Expand Down Expand Up @@ -5122,14 +5161,18 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co
if ((H5T_g.soft[i].conv.u.app_func)(src_id, dst_id, &(path->cdata), 0, 0, 0, NULL, NULL,
H5CX_get_dxpl()) < 0) {
memset(&(path->cdata), 0, sizeof(H5T_cdata_t));
H5E_clear_stack(NULL); /*ignore the error*/
/*ignore the error*/
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to clear current error stack");
path_init_error = true;
} /* end if */
} /* end if */
else if ((H5T_g.soft[i].conv.u.lib_func)(tmp_stype, tmp_dtype, &(path->cdata), NULL, 0, 0, 0, NULL,
NULL) < 0) {
else if ((H5T_g.soft[i].conv.u.lib_func)(tmp_stype, tmp_dtype, &(path->cdata), &tmp_ctx, 0, 0, 0,
NULL, NULL) < 0) {
memset(&(path->cdata), 0, sizeof(H5T_cdata_t));
H5E_clear_stack(NULL); /*ignore the error*/
/*ignore the error*/
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to clear current error stack");
path_init_error = true;
} /* end if */

Expand Down Expand Up @@ -5203,21 +5246,25 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co
fprintf(H5DEBUG(T), "H5T: conversion function 0x%016zx free failed for %s (ignored)\n",
(size_t)path->conv.u.app_func, path->name);
#endif
H5E_clear_stack(NULL); /*ignore the failure*/
} /* end if */
} /* end if */
/*ignore the failure*/
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to clear current error stack");
} /* end if */
} /* end if */
else if ((table->conv.u.lib_func)(NULL, NULL, &(table->cdata), NULL, 0, 0, 0, NULL, NULL) < 0) {
#ifdef H5T_DEBUG
if (H5DEBUG(T))
fprintf(H5DEBUG(T), "H5T: conversion function 0x%016zx free failed for %s (ignored)\n",
(size_t)path->conv.u.lib_func, path->name);
#endif
H5E_clear_stack(NULL); /*ignore the failure*/
} /* end if */
if (table->src)
(void)H5T_close_real(table->src);
if (table->dst)
(void)H5T_close_real(table->dst);
/*ignore the failure*/
if (H5E_clear_stack(NULL) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTRESET, NULL, "unable to clear current error stack");
} /* end if */
if (table->src && (H5T_close_real(table->src) < 0))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, NULL, "unable to close datatype");
if (table->dst && (H5T_close_real(table->dst) < 0))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, NULL, "unable to close datatype");
table = H5FL_FREE(H5T_path_t, table);
table = path;
H5T_g.path[md] = path;
Expand Down Expand Up @@ -5254,10 +5301,10 @@ H5T__path_find_real(const H5T_t *src, const H5T_t *dst, const char *name, H5T_co

done:
if (!ret_value && path && path != table) {
if (path->src)
(void)H5T_close_real(path->src);
if (path->dst)
(void)H5T_close_real(path->dst);
if (path->src && (H5T_close_real(path->src) < 0))
HDONE_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, NULL, "unable to close datatype");
if (path->dst && (H5T_close_real(path->dst) < 0))
HDONE_ERROR(H5E_DATATYPE, H5E_CANTCLOSEOBJ, NULL, "unable to close datatype");
path = H5FL_FREE(H5T_path_t, path);
} /* end if */

Expand Down Expand Up @@ -5538,7 +5585,7 @@ H5T_convert(H5T_path_t *tpath, H5T_t *src_type, H5T_t *dst_type, size_t nelmts,
#endif

/* Get the datatype conversion exception callback structure from the API context */
if (H5CX_get_dt_conv_cb(&conv_ctx.cb_struct) < 0)
if (H5CX_get_dt_conv_cb(&conv_ctx.u.conv.cb_struct) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "unable to get conversion exception callback");

/*
Expand All @@ -5547,18 +5594,18 @@ H5T_convert(H5T_path_t *tpath, H5T_t *src_type, H5T_t *dst_type, size_t nelmts,
* those as appropriate. Also grab the DXPL if necessary so we can pass
* that to the app conversion function.
*/
if (tpath->conv.is_app || conv_ctx.cb_struct.func) {
if (tpath->conv.is_app || conv_ctx.u.conv.cb_struct.func) {
if ((src_type_id = H5I_register(H5I_DATATYPE, src_type, false)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register ID for source datatype");
if ((dst_type_id = H5I_register(H5I_DATATYPE, dst_type, false)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL,
"unable to register ID for destination datatype");

if (tpath->conv.is_app)
conv_ctx.dxpl_id = H5CX_get_dxpl();
conv_ctx.u.conv.dxpl_id = H5CX_get_dxpl();
}
conv_ctx.src_type_id = src_type_id;
conv_ctx.dst_type_id = dst_type_id;
conv_ctx.u.conv.src_type_id = src_type_id;
conv_ctx.u.conv.dst_type_id = dst_type_id;

if (H5T_convert_with_ctx(tpath, src_type, dst_type, &conv_ctx, nelmts, buf_stride, bkg_stride, buf, bkg) <
0)
Expand Down Expand Up @@ -5619,8 +5666,9 @@ H5T_convert_with_ctx(H5T_path_t *tpath, H5T_t *src_type, H5T_t *dst_type, const
/* Call the appropriate conversion callback */
tpath->cdata.command = H5T_CONV_CONV;
if (tpath->conv.is_app) {
if ((tpath->conv.u.app_func)(conv_ctx->src_type_id, conv_ctx->dst_type_id, &(tpath->cdata), nelmts,
buf_stride, bkg_stride, buf, bkg, conv_ctx->dxpl_id) < 0)
if ((tpath->conv.u.app_func)(conv_ctx->u.conv.src_type_id, conv_ctx->u.conv.dst_type_id,
&(tpath->cdata), nelmts, buf_stride, bkg_stride, buf, bkg,
conv_ctx->u.conv.dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCONVERT, FAIL, "datatype conversion failed");
} /* end if */
else if ((tpath->conv.u.lib_func)(src_type, dst_type, &(tpath->cdata), conv_ctx, nelmts, buf_stride,
Expand Down
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