* interface for collectd plugins written in perl.
*/
- /* do not automatically get the thread specific perl interpreter */
+ /* do not automatically get the thread specific Perl interpreter */
#define PERL_NO_GET_CONTEXT
#define DONT_POISON_SPRINTF_YET 1
typedef struct c_ithread_s {
/* the thread's Perl interpreter */
PerlInterpreter *interp;
- _Bool running; /* thread is inside pi */
+ _Bool running; /* thread is inside Perl interpreter */
_Bool shutdown;
pthread_t pthread;
return 0;
} /* static int hv2data_source (HV *, data_source_t *) */
-static int av2value (pTHX_ char *name, AV *array, value_t *value, int len)
+/* av2value converts at most "len" elements from "array" to "value". Returns the
+ * number of elements converted or zero on error. */
+static size_t av2value (pTHX_ char *name, AV *array, value_t *value, size_t array_len)
{
const data_set_t *ds;
+ size_t i;
- int i = 0;
-
- if ((NULL == name) || (NULL == array) || (NULL == value))
- return -1;
-
- if (av_len (array) < len - 1)
- len = av_len (array) + 1;
-
- if (0 >= len)
- return -1;
+ if ((NULL == name) || (NULL == array) || (NULL == value) || (array_len == 0))
+ return 0;
ds = plugin_get_ds (name);
if (NULL == ds) {
log_err ("av2value: Unknown dataset \"%s\"", name);
- return -1;
+ return 0;
}
- if (ds->ds_num < len) {
- log_warn ("av2value: Value length exceeds data set length.");
- len = ds->ds_num;
+ if (array_len < ds->ds_num) {
+ log_warn ("av2value: array does not contain enough elements for type \"%s\": got %zu, want %zu",
+ name, array_len, ds->ds_num);
+ return 0;
+ } else if (array_len > ds->ds_num) {
+ log_warn ("av2value: array contains excess elements for type \"%s\": got %zu, want %zu",
+ name, array_len, ds->ds_num);
}
- for (i = 0; i < len; ++i) {
+ for (i = 0; i < ds->ds_num; ++i) {
SV **tmp = av_fetch (array, i, 0);
if (NULL != tmp) {
value[i].absolute = SvIV (*tmp);
}
else {
- return -1;
+ return 0;
}
}
- return len;
-} /* static int av2value (char *, AV *, value_t *, int) */
+
+ return ds->ds_num;
+} /* static size_t av2value (char *, AV *, value_t *, size_t) */
/*
* value list:
{
AV *array = (AV *)SvRV (*tmp);
- int len = av_len (array) + 1;
-
- if (len <= 0)
+ /* av_len returns the highest index, not the actual length. */
+ size_t array_len = (size_t) (av_len (array) + 1);
+ if (array_len == 0)
return -1;
- vl->values = (value_t *)smalloc (len * sizeof (value_t));
- vl->values_len = av2value (aTHX_ vl->type, (AV *)SvRV (*tmp),
- vl->values, len);
-
- if (-1 == vl->values_len) {
+ vl->values = calloc (array_len, sizeof (*vl->values));
+ vl->values_len = av2value (aTHX_ vl->type, (AV *)SvRV (*tmp), vl->values, array_len);
+ if (vl->values_len == 0) {
sfree (vl->values);
return -1;
}
return -1;
}
- ds->ds = (data_source_t *)smalloc ((len + 1) * sizeof (data_source_t));
+ ds->ds = smalloc ((len + 1) * sizeof (*ds->ds));
ds->ds_num = len + 1;
for (i = 0; i <= len; ++i) {
hash = (HV *)SvRV (*tmp);
- *m = (notification_meta_t *)smalloc (sizeof (**m));
+ *m = smalloc (sizeof (**m));
if (NULL == (tmp = hv_fetch (hash, "name", 4, 0))) {
log_warn ("av2notification_meta: Skipping invalid "
static int data_set2av (pTHX_ data_set_t *ds, AV *array)
{
- int i = 0;
+ size_t i;
if ((NULL == ds) || (NULL == array))
return -1;
static int value_list2hv (pTHX_ value_list_t *vl, data_set_t *ds, HV *hash)
{
AV *values = NULL;
-
- int i = 0;
- int len = 0;
+ size_t i;
if ((NULL == vl) || (NULL == ds) || (NULL == hash))
return -1;
- len = vl->values_len;
-
- if (ds->ds_num < len) {
- log_warn ("value2av: Value length exceeds data set length.");
- len = ds->ds_num;
- }
-
values = newAV ();
- av_extend (values, len - 1);
+ /* av_extend takes the last *index* to which the array should be extended. */
+ av_extend (values, vl->values_len - 1);
- for (i = 0; i < len; ++i) {
+ assert (ds->ds_num == vl->values_len);
+ for (i = 0; i < vl->values_len; ++i) {
SV *val = NULL;
if (DS_TYPE_COUNTER == ds->ds[i].type)
} /* static int pplugin_call_all (int, ...) */
/*
- * collectd's perl interpreter based thread implementation.
+ * collectd's Perl interpreter based thread implementation.
*
* This has been inspired by Perl's ithreads introduced in version 5.6.0.
*/
assert (NULL != perl_threads);
- t = (c_ithread_t *)smalloc (sizeof (c_ithread_t));
+ t = smalloc (sizeof (*t));
memset (t, 0, sizeof (c_ithread_t));
t->interp = (NULL == base)
return -1;
}
- data = (pfc_user_data_t *)smalloc (sizeof (*data));
+ data = smalloc (sizeof (*data));
data->name = sstrdup (ci->values[0].value.string);
data->user_data = newSV (0);
static int perl_shutdown (void)
{
- c_ithread_t *t = NULL;
-
- int ret = 0;
+ c_ithread_t *t;
+ int ret;
dTHX;
return 0;
if (NULL == aTHX) {
- t = NULL;
-
pthread_mutex_lock (&perl_threads->mutex);
t = c_ithread_create (perl_threads->head->interp);
pthread_mutex_unlock (&perl_threads->mutex);
thr->shutdown = 1;
if (thr->running) {
- /* Give some time to thread to exit from pi */
- WARNING ("perl shutdown: thread is running inside perl. Waiting.");
+ /* Give some time to thread to exit from Perl interpreter */
+ WARNING ("perl shutdown: Thread is running inside Perl. Waiting.");
ts_wait.tv_sec = 0;
ts_wait.tv_nsec = 500000;
nanosleep (&ts_wait, NULL);
}
if (thr->running) {
- ERROR ("perl shutdown: thread hangs inside perl. Thread killed.");
pthread_kill (thr->pthread, SIGTERM);
+ ERROR ("perl shutdown: Thread hangs inside Perl. Thread killed.");
}
c_ithread_destroy (thr);
}
#endif
PERL_SYS_INIT3 (&argc, &argv, &environ);
- perl_threads = (c_ithread_list_t *)smalloc (sizeof (c_ithread_list_t));
+ perl_threads = smalloc (sizeof (*perl_threads));
memset (perl_threads, 0, sizeof (c_ithread_list_t));
pthread_mutexattr_init(&perl_threads->mutexattr);
aTHX = perl_threads->head->interp;
- log_debug ("perl_config: loading perl plugin \"%s\"", value);
+ log_debug ("perl_config: Loading Perl plugin \"%s\"", value);
load_module (PERL_LOADMOD_NOIMPORT,
newSVpv (module_name, strlen (module_name)), Nullsv);
return 0;
value = ci->values[0].value.string;
- perl_argv = (char **)realloc (perl_argv,
+ perl_argv = realloc (perl_argv,
(++perl_argc + 1) * sizeof (char *));
if (NULL == perl_argv) {
perl_argv[perl_argc - 1] = "-d";
}
else {
- perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 4);
+ perl_argv[perl_argc - 1] = smalloc (strlen (value) + 4);
sstrncpy (perl_argv[perl_argc - 1], "-d:", 4);
sstrncpy (perl_argv[perl_argc - 1] + 3, value, strlen (value) + 1);
}
value = ci->values[0].value.string;
if (NULL == aTHX) {
- perl_argv = (char **)realloc (perl_argv,
+ perl_argv = realloc (perl_argv,
(++perl_argc + 1) * sizeof (char *));
if (NULL == perl_argv) {
exit (3);
}
- perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 3);
+ perl_argv[perl_argc - 1] = smalloc (strlen (value) + 3);
sstrncpy(perl_argv[perl_argc - 1], "-I", 3);
sstrncpy(perl_argv[perl_argc - 1] + 2, value, strlen (value) + 1);
void module_register (void)
{
perl_argc = 4;
- perl_argv = (char **)smalloc ((perl_argc + 1) * sizeof (char *));
+ perl_argv = smalloc ((perl_argc + 1) * sizeof (*perl_argv));
/* default options for the Perl interpreter */
perl_argv[0] = "";
projects / collectd.git / commitdiff