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|
/*
* Copyright (C) 1998-2001 NCSA HDF
* All rights reserved.
*
* Purpose: Provides error handling in the form of a stack. The
* FUNC_ENTER() macro clears the error stack whenever an API
* function is entered. When an error is detected, an entry is
* pushed onto the stack. As the functions unwind additional
* entries are pushed onto the stack. The API function will
* return some indication that an error occurred and the
* application can print the error stack.
*
* Certain API functions in the H5E package (such as H5Eprint())
* do not clear the error stack. Otherwise, any function which
* doesn't have an underscore immediately after the package name
* will clear the error stack. For instance, H5Fopen() clears
* the error stack while H5F_open() does not.
*
* An error stack has a fixed maximum size. If this size is
* exceeded then the stack will be truncated and only the
* inner-most functions will have entries on the stack. This is
* expected to be a rare condition.
*
* Each thread has its own error stack, but since
* multi-threading has not been added to the library yet, this
* package maintains a single error stack. The error stack is
* statically allocated to reduce the complexity of handling
* errors within the H5E package.
*
*/
#include "H5private.h" /* Generic Functions */
#include "H5Iprivate.h" /* IDs */
#include "H5Eprivate.h" /* Private error routines */
#include "H5MMprivate.h" /* Memory management */
#define PABLO_MASK H5E_mask
static const H5E_major_mesg_t H5E_major_mesg_g[] = {
{H5E_NONE_MAJOR, "No error"},
{H5E_ARGS, "Function arguments"},
{H5E_RESOURCE, "Resource unavailable"},
{H5E_INTERNAL, "Internal HDF5 error"},
{H5E_FILE, "File interface"},
{H5E_IO, "Low-level I/O layer"},
{H5E_FUNC, "Function entry/exit"},
{H5E_ATOM, "Atom layer"},
{H5E_CACHE, "Meta data cache layer"},
{H5E_BTREE, "B-tree layer"},
{H5E_SYM, "Symbol table layer"},
{H5E_HEAP, "Heap layer"},
{H5E_OHDR, "Object header layer"},
{H5E_DATATYPE, "Datatype interface"},
{H5E_DATASPACE, "Dataspace interface"},
{H5E_DATASET, "Dataset interface"},
{H5E_STORAGE, "Data storage layer"},
{H5E_PLIST, "Property list interface"},
{H5E_ATTR, "Attribute layer"},
{H5E_PLINE, "Data filters layer"},
{H5E_EFL, "External file list"},
{H5E_REFERENCE, "References layer"},
{H5E_VFL, "Virtual File Layer"},
{H5E_TBBT, "Threaded, Balanced, Binary Trees"},
};
static const H5E_minor_mesg_t H5E_minor_mesg_g[] = {
{H5E_NONE_MINOR, "No error"},
/* Argument errors */
{H5E_UNINITIALIZED, "Information is uninitialized"},
{H5E_UNSUPPORTED, "Feature is unsupported"},
{H5E_BADTYPE, "Inappropriate type"},
{H5E_BADRANGE, "Out of range"},
{H5E_BADVALUE, "Bad value"},
/* Resource errors */
{H5E_NOSPACE, "No space available for allocation"},
{H5E_CANTCOPY, "Unable to copy object"},
{H5E_CANTFREE, "Unable to free object"},
{H5E_ALREADYEXISTS, "Object already exists"},
/* File accessability errors */
{H5E_FILEEXISTS, "File already exists"},
{H5E_FILEOPEN, "File already open"},
{H5E_CANTCREATE, "Unable to create file"},
{H5E_CANTOPENFILE, "Unable to open file"},
{H5E_CANTCLOSEFILE, "Unable to close file"},
{H5E_NOTHDF5, "Not an HDF5 file"},
{H5E_BADFILE, "Bad file ID accessed"},
{H5E_TRUNCATED, "File has been truncated"},
{H5E_MOUNT, "File mount error"},
/* Generic low-level file I/O errors */
{H5E_SEEKERROR, "Seek failed"},
{H5E_READERROR, "Read failed"},
{H5E_WRITEERROR, "Write failed"},
{H5E_CLOSEERROR, "Close failed"},
{H5E_OVERFLOW, "Address overflowed"},
/* Function entry/exit interface errors */
{H5E_CANTINIT, "Unable to initialize"},
{H5E_ALREADYINIT, "Object already initialized"},
/* Object atom related errors */
{H5E_BADATOM, "Unable to find atom information (already closed?)"},
{H5E_CANTREGISTER, "Unable to register new atom"},
{H5E_CANTINC, "Unable to increment reference count"},
{H5E_CANTDEC, "Unable to decrement reference count"},
/* Cache related errors */
{H5E_CANTFLUSH, "Unable to flush data from cache"},
{H5E_CANTLOAD, "Unable to load meta data into cache"},
{H5E_PROTECT, "Protected meta data error"},
{H5E_NOTCACHED, "Meta data not currently cached"},
/* B-tree related errors */
{H5E_NOTFOUND, "Object not found"},
{H5E_EXISTS, "Object already exists"},
{H5E_CANTENCODE, "Unable to encode value"},
{H5E_CANTDECODE, "Unable to decode value"},
{H5E_CANTSPLIT, "Unable to split node"},
{H5E_CANTINSERT, "Unable to insert object"},
{H5E_CANTLIST, "Unable to list node"},
/* Object header related errors */
{H5E_LINKCOUNT, "Bad object header link count"},
{H5E_VERSION, "Wrong version number"},
{H5E_ALIGNMENT, "Alignment error"},
{H5E_BADMESG, "Unrecognized message"},
{H5E_CANTDELETE, "Can't delete message"},
/* Group related errors */
{H5E_CANTOPENOBJ, "Can't open object"},
{H5E_COMPLEN, "Name component is too long"},
{H5E_CWG, "Problem with current working group"},
{H5E_LINK, "Link count failure"},
{H5E_SLINK, "Symbolic link error"},
/* Datatype conversion errors */
{H5E_CANTCONVERT, "Can't convert datatypes"},
/* Dataspace errors */
{H5E_CANTCLIP, "Can't clip hyperslab region"},
{H5E_CANTCOUNT, "Can't count elements"},
/* Property list errors */
{H5E_CANTGET, "Can't get value"},
{H5E_CANTSET, "Can't set value"},
/* Parallel MPI errors */
{H5E_MPI, "Some MPI function failed"},
{H5E_MPIERRSTR, "MPI Error String"}
};
/* Interface initialization? */
static int interface_initialize_g = 0;
#define INTERFACE_INIT H5E_init_interface
static herr_t H5E_init_interface (void);
const hbool_t H5E_clearable_g = TRUE; /* DO NOT CHANGE */
#ifdef H5_HAVE_THREADSAFE
/*
* The per-thread error stack. pthread_once() initializes a special
* key that will be used by all threads to create a stack specific to
* each thread individually. The association of stacks to threads will
* be handled by the pthread library.
*
* In order for this macro to work, H5E_get_my_stack() must be preceeded
* by "H5E_t *estack =".
*/
H5E_t *H5E_get_stack(void);
#define H5E_get_my_stack() H5E_get_stack()
#else
/*
* The error stack. Eventually we'll have some sort of global table so each
* thread has it's own stack. The stacks will be created on demand when the
* thread first calls H5E_push(). */
H5E_t H5E_stack_g[1];
#define H5E_get_my_stack() (H5E_stack_g+0)
#endif
#ifdef H5_HAVE_PARALLEL
/*
* variables used for MPI error reporting
*/
char H5E_mpi_error_str[MPI_MAX_ERROR_STRING];
int H5E_mpi_error_str_len;
#endif
/*
* Automatic error stack traversal occurs if the traversal callback function
* is non null and an API function is about to return an error. These should
* probably be part of the error stack so they're local to a thread.
*/
herr_t (*H5E_auto_g)(void*) = (herr_t(*)(void*))H5Eprint;
void *H5E_auto_data_g = NULL;
#ifdef H5_HAVE_THREADSAFE
/*-------------------------------------------------------------------------
* Function: H5E_get_stack
*
* Purpose: Support function for H5E_get_my_stack() to initialize and
* acquire per-thread error stack.
*
* Return: Success: error stack (H5E_t *)
*
* Failure: NULL
*
* Programmer: Chee Wai LEE
* April 24, 2000
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
H5E_t *H5E_get_stack(void)
{
H5E_t *estack = pthread_getspecific(H5TS_errstk_key_g);
if (!estack) {
/* no associated value with current thread - create one */
estack = (H5E_t *)H5MM_malloc(sizeof(H5E_t));
pthread_setspecific(H5TS_errstk_key_g, (void *)estack);
}
return estack;
}
#endif /* H5_HAVE_THREADSAFE */
/*-------------------------------------------------------------------------
* Function: H5E_init_interface
*
* Purpose: Initialize the H5E interface. `stderr' is an extern or
* function on some systems so we can't initialize
* H5E_auto_data_g statically.
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Robb Matzke
* Friday, June 11, 1999
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5E_init_interface (void)
{
FUNC_ENTER(H5E_init_interface, FAIL);
H5E_auto_data_g = stderr;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5Eset_auto
*
* Purpose: Turns on or off automatic printing of errors. When turned on
* (non-null FUNC pointer) any API function which returns an
* error indication will first call FUNC passing it CLIENT_DATA
* as an argument.
*
* The default values before this function is called are
* H5Eprint() with client data being the standard error stream,
* stderr.
*
* Automatic stack traversal is always in the H5E_WALK_DOWNWARD
* direction.
*
* See Also: H5Ewalk()
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Eset_auto(H5E_auto_t func, void *client_data)
{
FUNC_ENTER (H5Eset_auto, FAIL);
H5TRACE2("e","xx",func,client_data);
H5E_auto_g = func;
H5E_auto_data_g = client_data;
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5Eget_auto
*
* Purpose: Returns the current settings for the automatic error stack
* traversal function and its data. Either (or both) arguments
* may be null in which case the value is not returned.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Saturday, February 28, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Eget_auto(H5E_auto_t *func, void **client_data)
{
FUNC_ENTER (H5Eget_auto, FAIL);
H5TRACE2("e","*x*x",func,client_data);
if (func) *func = H5E_auto_g;
if (client_data) *client_data = H5E_auto_data_g;
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5Eclear
*
* Purpose: Clears the error stack for the current thread.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Eclear(void)
{
FUNC_ENTER (H5Eclear, FAIL);
H5TRACE0("e","");
/* FUNC_ENTER() does all the work */
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5Eprint
*
* Purpose: Prints the error stack in some default way. This is just a
* convenience function for H5Ewalk() with a function that
* prints error messages. Users are encouraged to write there
* own more specific error handlers.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
* Albert Cheng, 2000/12/02
* Show MPI process rank id if applicable.
* Albert Cheng, 2001/07/14
* Show HDF5 library version information string too.
*
*-------------------------------------------------------------------------
*/
herr_t
H5Eprint(FILE *stream)
{
H5E_t *estack = H5E_get_my_stack ();
hbool_t H5E_clearable_g = FALSE; /*override global*/
herr_t status = FAIL;
FUNC_ENTER (H5Eprint, FAIL);
/*NO TRACE*/
if (!stream) stream = stderr;
fprintf (stream, "HDF5-DIAG: Error detected in %s ", H5_lib_vers_info_g);
/* try show the process or thread id in multiple processes cases*/
#ifdef H5_HAVE_PARALLEL
{ int mpi_rank, mpi_initialized;
MPI_Initialized(&mpi_initialized);
if (mpi_initialized){
MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
fprintf (stream, "MPI-process %d.", mpi_rank);
}else
fprintf (stream, "thread 0.");
}
#elif defined(H5_HAVE_THREADSAFE)
fprintf (stream, "thread %d.", (int)pthread_self());
#else
fprintf (stream, "thread 0.");
#endif
if (estack && estack->nused>0) fprintf (stream, " Back trace follows.");
HDfputc ('\n', stream);
status = H5E_walk (H5E_WALK_DOWNWARD, H5Ewalk_cb, (void*)stream);
FUNC_LEAVE (status);
}
/*-------------------------------------------------------------------------
* Function: H5Ewalk
*
* Purpose: Walks the error stack for the current thread and calls some
* function for each error along the way.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Ewalk(H5E_direction_t direction, H5E_walk_t func, void *client_data)
{
hbool_t H5E_clearable_g = FALSE; /*override global*/
herr_t status = FAIL;
FUNC_ENTER (H5Ewalk, FAIL);
H5TRACE3("e","Edxx",direction,func,client_data);
status = H5E_walk (direction, func, client_data);
FUNC_LEAVE (status);
}
/*-------------------------------------------------------------------------
* Function: H5Ewalk_cb
*
* Purpose: This is a default error stack traversal callback function
* that prints error messages to the specified output stream.
* It is not meant to be called directly but rather as an
* argument to the H5Ewalk() function. This function is called
* also by H5Eprint(). Application writers are encouraged to
* use this function as a model for their own error stack
* walking functions.
*
* N is a counter for how many times this function has been
* called for this particular traversal of the stack. It always
* begins at zero for the first error on the stack (either the
* top or bottom error, or even both, depending on the traversal
* direction and the size of the stack).
*
* ERR_DESC is an error description. It contains all the
* information about a particular error.
*
* CLIENT_DATA is the same pointer that was passed as the
* CLIENT_DATA argument of H5Ewalk(). It is expected to be a
* file pointer (or stderr if null).
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, December 12, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Ewalk_cb(int n, H5E_error_t *err_desc, void *client_data)
{
FILE *stream = (FILE *)client_data;
const char *maj_str = NULL;
const char *min_str = NULL;
const int indent = 2;
/*NO TRACE*/
/* Check arguments */
assert (err_desc);
if (!client_data) client_data = stderr;
/* Get descriptions for the major and minor error numbers */
maj_str = H5Eget_major (err_desc->maj_num);
min_str = H5Eget_minor (err_desc->min_num);
/* Print error message */
fprintf (stream, "%*s#%03d: %s line %u in %s(): %s\n",
indent, "", n, err_desc->file_name, err_desc->line,
err_desc->func_name, err_desc->desc);
fprintf (stream, "%*smajor(%02d): %s\n",
indent*2, "", err_desc->maj_num, maj_str);
fprintf (stream, "%*sminor(%02d): %s\n",
indent*2, "", err_desc->min_num, min_str);
return SUCCEED;
}
/*-------------------------------------------------------------------------
* Function: H5Eget_major
*
* Purpose: Given a major error number return a constant character string
* that describes the error.
*
* Return: Success: Ptr to a character string.
*
* Failure: Ptr to "Invalid major error number"
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
const char *
H5Eget_major (H5E_major_t n)
{
unsigned i;
/*
* WARNING: Do not call the FUNC_ENTER() or FUNC_LEAVE() macros since
* they might interact badly with the error stack. We are
* probably calling this function during an error stack
* traversal and adding/removing entries as the result of an
* error would most likely mess things up.
*/
for (i=0; i<NELMTS (H5E_major_mesg_g); i++) {
if (H5E_major_mesg_g[i].error_code==n) {
return H5E_major_mesg_g[i].str;
}
}
return "Invalid major error number";
}
/*-------------------------------------------------------------------------
* Function: H5Eget_minor
*
* Purpose: Given a minor error number return a constant character string
* that describes the error.
*
* Return: Success: Ptr to a character string.
*
* Failure: Ptr to "Invalid minor error number"
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
const char *
H5Eget_minor (H5E_minor_t n)
{
unsigned i;
/*
* WARNING: Do not call the FUNC_ENTER() or FUNC_LEAVE() macros since
* they might interact badly with the error stack. We are
* probably calling this function during an error stack
* traversal and adding/removing entries as the result of an
* error would most likely mess things up.
*/
for (i=0; i<NELMTS (H5E_minor_mesg_g); i++) {
if (H5E_minor_mesg_g[i].error_code==n) {
return H5E_minor_mesg_g[i].str;
}
}
return "Invalid minor error number";
}
/*-------------------------------------------------------------------------
* Function: H5E_push
*
* Purpose: Pushes a new error record onto error stack for the current
* thread. The error has major and minor numbers MAJ_NUM and
* MIN_NUM, the name of a function where the error was detected,
* the name of the file where the error was detected, the
* line within that file, and an error description string. The
* function name, file name, and error description strings must
* be statically allocated (the FUNC_ENTER() macro takes care of
* the function name and file name automatically, but the
* programmer is responsible for the description string).
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, December 12, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5E_push(H5E_major_t maj_num, H5E_minor_t min_num, const char *function_name,
const char *file_name, unsigned line, const char *desc)
{
H5E_t *estack = H5E_get_my_stack ();
/*
* WARNING: We cannot call HERROR() from within this function or else we
* could enter infinite recursion. Furthermore, we also cannot
* call any other HDF5 macro or function which might call
* HERROR(). HERROR() is called by HRETURN_ERROR() which could
* be called by FUNC_ENTER().
*/
/*
* Don't fail if arguments are bad. Instead, substitute some default
* value.
*/
if (!function_name) function_name = "Unknown_Function";
if (!file_name) file_name = "Unknown_File";
if (!desc) desc = "No description given";
/*
* Push the error if there's room. Otherwise just forget it.
*/
assert (estack);
if (estack->nused<H5E_NSLOTS) {
estack->slot[estack->nused].maj_num = maj_num;
estack->slot[estack->nused].min_num = min_num;
estack->slot[estack->nused].func_name = function_name;
estack->slot[estack->nused].file_name = file_name;
estack->slot[estack->nused].line = line;
estack->slot[estack->nused].desc = desc;
estack->nused++;
}
return SUCCEED; /*don't use FUNC_LEAVE() here */
}
/*-------------------------------------------------------------------------
* Function: H5Epush
*
* Purpose: Pushes a new error record onto error stack for the current
* thread. The error has major and minor numbers MAJ_NUM and
* MIN_NUM, the name of a function where the error was detected,
* the name of the file where the error was detected, the
* line within that file, and an error description string. The
* function name, file name, and error description strings must
* be statically allocated.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, October 18, 1999
*
* Notes: Basically a public API wrapper around the H5E_push function.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5Epush(const char *file, const char *func, unsigned line, H5E_major_t maj,
H5E_minor_t min, const char *str)
{
herr_t ret_value;
FUNC_ENTER(H5Epush, FAIL);
H5TRACE6("e","ssIuEjEns",file,func,line,maj,min,str);
ret_value = H5E_push(maj, min, func, file, line, str);
FUNC_LEAVE(ret_value);
}
/*-------------------------------------------------------------------------
* Function: H5E_clear
*
* Purpose: Clears the error stack for the current thread.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, February 27, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5E_clear(void)
{
H5E_t *estack = H5E_get_my_stack ();
FUNC_ENTER(H5E_clear, FAIL);
if (estack) estack->nused = 0;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5E_walk
*
* Purpose: Walks the error stack, calling the specified function for
* each error on the stack. The DIRECTION argument determines
* whether the stack is walked from the inside out or the
* outside in. The value H5E_WALK_UPWARD means begin with the
* most specific error and end at the API; H5E_WALK_DOWNWARD
* means to start at the API and end at the inner-most function
* where the error was first detected.
*
* The function pointed to by FUNC will be called for each error
* in the error stack. It's arguments will include an index
* number (beginning at zero regardless of stack traversal
* direction), an error stack entry, and the CLIENT_DATA pointer
* passed to H5E_print.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, December 12, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5E_walk (H5E_direction_t direction, H5E_walk_t func, void *client_data)
{
H5E_t *estack = H5E_get_my_stack ();
int i;
herr_t status;
FUNC_ENTER(H5E_walk, FAIL);
/* check args, but rather than failing use some default value */
if (direction!=H5E_WALK_UPWARD && direction!=H5E_WALK_DOWNWARD) {
direction = H5E_WALK_UPWARD;
}
/* walk the stack */
assert (estack);
if (func && H5E_WALK_UPWARD==direction) {
for (i=0, status=SUCCEED; i<estack->nused && status>=0; i++) {
status = (func)(i, estack->slot+i, client_data);
}
} else if (func && H5E_WALK_DOWNWARD==direction) {
for (i=estack->nused-1, status=SUCCEED; i>=0 && status>=0; --i) {
status = (func)(estack->nused-(i+1), estack->slot+i, client_data);
}
}
FUNC_LEAVE(SUCCEED);
}
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