I had an issue with an extension that I previously posted to this
list and it was suggested I update to the newer API which might
provide a solution to the problem.
Taking a somewhat safe approach I tackled converting the rrdtool
extension first since it was similar in functionality and protocol to
my ramdisk extension.
Trying to convert to the new API wasn't as easy as it had been
suggested/reported.
Steph Fox and I worked on it for several days before we finally got
it worked out.
I tested the extension for the last week under Apache 1.3.33 and
found that the extension seemed to take less time to perform it's
functions which was well worth the effort to convert to the newer API
so thank you for the kick in this area.
I then compiled for Apache 2 and found that I was still experiencing
the same issues so I'm sad to report that this did not correct the
problem.
I realize that hearing "it doesn't work" or "it failed" isn't
descriptive so I'll try to provide a little more information on the
problem.
Bear in mind that I have stepped back in time a little and have gone
with linking the RRDTool library in an attempt to remove as many
unknown variables from the equation as I possibly could and allow
testing with various version of the RRDTool library but the RRDTool
extension Tobias and I will be submitting for bundling with PHP will
not require linking to an external RRDTool library as it will be
entirely self contained however, the ability to link to an external
RRDTool library will be available provided we can get all of our
ducks in a row and satisfy the PHP license requirements (which may
already be the case).
Building PHP for Apache 1.3, a php script calls the rrd_graph
function with a string (filename), an array (data to process) and a
long (the array count) and returns an array containing the generated
output file details.
PHP seems to pass the variables to the linked library function
without any issues, generates the output file and returns an array of
the details with success.
Building PHP for Apache 2.0 and Apache 2.2, passing the same
information should yield the same results but it doesn't.
The output file is never generated, the library complains that the
array being passed is incomplete and invalid and no array is returned.
I've tried using both 1.0.x and 1.2.x versions of the RRDTool library
which resulted in the same issue so I've ruled out the library
function as the cause of the problem since they all worked as
expected when building PHP for Apache 1.3.
Here's the entire rrd_graph function currently being used in the
testing phase, I've gone over the available API with Steph who
provided a lot of time, insight and assistance in helping me convert
to the new API so at this time I'm not sure what the issue is or how
to resolve it so if someone has ideas or sees a problem I'd be most
grateful to hear about it.
________________________________________________________________________
_____________________________
PHP_FUNCTION(rrd_graph)
{
char *file;
zval *args, *entry, *p_calcpr;
HashTable *args_arr;
char **argv, **calcpr;
long php_argc, argc;
uint file_len;
int xsize, ysize, i = 0;
double ymin = 0.0, ymax = 0.0;
if ( rrd_test_error() )
rrd_clear_error();
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sal",
&file, &file_len, &args, &php_argc) == FAILURE)
{
return;
}
if ( args->type != IS_ARRAY )
{
php_error(E_WARNING, "2nd Variable passed to rrd_graph is not an
array!\n");
RETURN_FALSE;
}
args_arr = args->value.ht;
argc = php_argc + 3;
argv = (char **) emalloc(argc * sizeof(char *));
argv[0] = estrdup("dummy");
argv[1] = estrdup("graph");
argv[2] = estrndup(file, file_len);
for (i = 3; i < argc; i++)
{
zval **dataptr;
if ( zend_hash_get_current_data(args_arr, (void *) &dataptr) ==
FAILURE )
continue;
entry = *dataptr;
if ( entry->type != IS_STRING )
convert_to_string(entry);
argv[i] = estrdup(entry->value.str.val);
if ( i < argc )
zend_hash_move_forward(args_arr);
}
optind = 0; opterr = 0;
#if HAVE_RRD_12X
if ( rrd_graph(argc-1, &argv[1], &calcpr, &xsize, &ysize, NULL,
&ymin, &ymax) != FAILURE )
{
#else
if ( rrd_graph(argc-1, &argv[1], &calcpr, &xsize, &ysize) != FAILURE )
{
#endif
array_init(return_value);
add_assoc_long(return_value, "xsize", xsize);
add_assoc_long(return_value, "ysize", ysize);
MAKE_STD_ZVAL(p_calcpr);
array_init(p_calcpr);
if (calcpr)
{
for (i = 0; calcpr[i]; i++)
{
add_next_index_string(p_calcpr, calcpr[i], 1);
free(calcpr[i]);
}
free(calcpr);
}
zend_hash_update(return_value->value.ht, "calcpr", sizeof("calcpr"),
(void *)&p_calcpr, sizeof(zval *), NULL);
}
else
{
RETVAL_FALSE;
}
for (i = 1; i < argc; i++)
efree(argv[i]);
efree(argv);
return;
}
