* interface for collectd plugins written in perl.
*/
+/* do not automatically get the thread specific perl interpreter */
+#define PERL_NO_GET_CONTEXT
+
#include "collectd.h"
#include "configfile.h"
#include "plugin.h"
#include "common.h"
+#include <pthread.h>
+
+#if !defined(USE_ITHREADS)
+# error "Perl does not support ithreads!"
+#endif /* !defined(USE_ITHREADS) */
+
+/* clear the Perl sub's stack frame
+ * (this should only be used inside an XSUB) */
+#define CLEAR_STACK_FRAME PL_stack_sp = PL_stack_base + *PL_markstack_ptr
+
#define PLUGIN_INIT 0
#define PLUGIN_READ 1
#define PLUGIN_WRITE 2
#define PLUGIN_DATASET 255
#define log_debug(...) DEBUG ("perl: " __VA_ARGS__)
+#define log_info(...) INFO ("perl: " __VA_ARGS__)
#define log_warn(...) WARNING ("perl: " __VA_ARGS__)
#define log_err(...) ERROR ("perl: " __VA_ARGS__)
-
/* this is defined in DynaLoader.a */
void boot_DynaLoader (PerlInterpreter *, CV *);
-static XS (Collectd_plugin_register);
-static XS (Collectd_plugin_unregister);
+static XS (Collectd_plugin_register_ds);
+static XS (Collectd_plugin_unregister_ds);
static XS (Collectd_plugin_dispatch_values);
static XS (Collectd_plugin_log);
-
+static XS (Collectd_call_by_name);
/*
* private data types
*/
-typedef struct {
- int len;
- int *values;
-} ds_types_t;
+typedef struct c_ithread_s {
+ /* the thread's Perl interpreter */
+ PerlInterpreter *interp;
+
+ /* double linked list of threads */
+ struct c_ithread_s *prev;
+ struct c_ithread_s *next;
+} c_ithread_t;
typedef struct {
- int wait_time;
- int wait_left;
+ c_ithread_t *head;
+ c_ithread_t *tail;
- SV *sub;
-} pplugin_t;
+#if COLLECT_DEBUG
+ /* some usage stats */
+ int number_of_threads;
+#endif /* COLLECT_DEBUG */
+ pthread_mutex_t mutex;
+} c_ithread_list_t;
/*
* private variables
*/
-/* valid configuration file keys */
-static const char *config_keys[] =
-{
- "LoadPlugin",
- "BaseName",
- "IncludeDir"
-};
-static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+/* if perl_threads != NULL perl_threads->head must
+ * point to the "base" thread */
+static c_ithread_list_t *perl_threads = NULL;
-static PerlInterpreter *perl = NULL;
+/* the key used to store each pthread's ithread */
+static pthread_key_t perl_thr_key;
-static char base_name[DATA_MAX_NAME_LEN] = "";
+static int perl_argc = 0;
+static char **perl_argv = NULL;
-static char *plugin_types[] = { "init", "read", "write", "shutdown" };
-static HV *plugins[PLUGIN_TYPES];
-static HV *data_sets;
+static char base_name[DATA_MAX_NAME_LEN] = "";
static struct {
char name[64];
XS ((*f));
} api[] =
{
- { "Collectd::plugin_register", Collectd_plugin_register },
- { "Collectd::plugin_unregister", Collectd_plugin_unregister },
- { "Collectd::plugin_dispatch_values", Collectd_plugin_dispatch_values },
- { "Collectd::plugin_log", Collectd_plugin_log },
+ { "Collectd::plugin_register_data_set", Collectd_plugin_register_ds },
+ { "Collectd::plugin_unregister_data_set", Collectd_plugin_unregister_ds },
+ { "Collectd::plugin_dispatch_values", Collectd_plugin_dispatch_values },
+ { "Collectd::plugin_log", Collectd_plugin_log },
+ { "Collectd::call_by_name", Collectd_call_by_name },
{ "", NULL }
};
+struct {
+ char name[64];
+ int value;
+} constants[] =
+{
+ { "Collectd::TYPE_INIT", PLUGIN_INIT },
+ { "Collectd::TYPE_READ", PLUGIN_READ },
+ { "Collectd::TYPE_WRITE", PLUGIN_WRITE },
+ { "Collectd::TYPE_SHUTDOWN", PLUGIN_SHUTDOWN },
+ { "Collectd::TYPE_LOG", PLUGIN_LOG },
+ { "Collectd::TYPE_DATASET", PLUGIN_DATASET },
+ { "Collectd::DS_TYPE_COUNTER", DS_TYPE_COUNTER },
+ { "Collectd::DS_TYPE_GAUGE", DS_TYPE_GAUGE },
+ { "Collectd::LOG_ERR", LOG_ERR },
+ { "Collectd::LOG_WARNING", LOG_WARNING },
+ { "Collectd::LOG_NOTICE", LOG_NOTICE },
+ { "Collectd::LOG_INFO", LOG_INFO },
+ { "Collectd::LOG_DEBUG", LOG_DEBUG },
+ { "", 0 }
+};
/*
* Helper functions for data type conversion.
* ...
* ]
*/
-static int hv2data_source (HV *hash, data_source_t *ds)
+static int hv2data_source (pTHX_ HV *hash, data_source_t *ds)
{
SV **tmp = NULL;
if ((NULL == hash) || (NULL == ds))
return -1;
- if (NULL != (tmp = Perl_hv_fetch (perl, hash, "name", 4, 0))) {
+ if (NULL != (tmp = hv_fetch (hash, "name", 4, 0))) {
strncpy (ds->name, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
ds->name[DATA_MAX_NAME_LEN - 1] = '\0';
}
return -1;
}
- if (NULL != (tmp = Perl_hv_fetch (perl, hash, "type", 4, 0))) {
+ if (NULL != (tmp = hv_fetch (hash, "type", 4, 0))) {
ds->type = SvIV (*tmp);
if ((DS_TYPE_COUNTER != ds->type) && (DS_TYPE_GAUGE != ds->type)) {
ds->type = DS_TYPE_COUNTER;
}
- if (NULL != (tmp = Perl_hv_fetch (perl, hash, "min", 3, 0)))
+ if (NULL != (tmp = hv_fetch (hash, "min", 3, 0)))
ds->min = SvNV (*tmp);
else
ds->min = NAN;
- if (NULL != (tmp = Perl_hv_fetch (perl, hash, "max", 3, 0)))
+ if (NULL != (tmp = hv_fetch (hash, "max", 3, 0)))
ds->max = SvNV (*tmp);
else
ds->max = NAN;
return 0;
} /* static data_source_t *hv2data_source (HV *) */
-static int av2value (char *name, AV *array, value_t *value, int len)
+static int av2value (pTHX_ char *name, AV *array, value_t *value, int len)
{
- SV **tmp = NULL;
-
- ds_types_t *ds = NULL;
+ const data_set_t *ds;
int i = 0;
if ((NULL == name) || (NULL == array) || (NULL == value))
return -1;
- if (Perl_av_len (perl, array) < len - 1)
- len = Perl_av_len (perl, array) + 1;
+ if (av_len (array) < len - 1)
+ len = av_len (array) + 1;
if (0 >= len)
return -1;
- tmp = Perl_hv_fetch (perl, data_sets, name, strlen (name), 0);
- if (NULL == tmp) {
- log_err ("av2value: No dataset for \"%s\".", name);
+ ds = plugin_get_ds (name);
+ if (NULL == ds) {
+ log_err ("av2value: Unknown dataset \"%s\"", name);
return -1;
}
- ds = (ds_types_t *)SvIV ((SV *)SvRV (*tmp));
- if (ds->len < len) {
+ if (ds->ds_num < len) {
log_warn ("av2value: Value length exceeds data set length.");
- len = ds->len;
+ len = ds->ds_num;
}
for (i = 0; i < len; ++i) {
- SV **tmp = Perl_av_fetch (perl, array, i, 0);
+ SV **tmp = av_fetch (array, i, 0);
if (NULL != tmp) {
- if (DS_TYPE_COUNTER == ds->values[i])
+ if (DS_TYPE_COUNTER == ds->ds[i].type)
value[i].counter = SvIV (*tmp);
else
value[i].gauge = SvNV (*tmp);
return len;
} /* static int av2value (char *, AV *, value_t *, int) */
-static int data_set2av (data_set_t *ds, AV *array)
+static int data_set2av (pTHX_ data_set_t *ds, AV *array)
{
int i = 0;
if ((NULL == ds) || (NULL == array))
return -1;
- Perl_av_extend (perl, array, ds->ds_num);
+ av_extend (array, ds->ds_num);
for (i = 0; i < ds->ds_num; ++i) {
- HV *source = Perl_newHV (perl);
+ HV *source = newHV ();
- if (NULL == Perl_hv_store (perl, source, "name", 4,
- Perl_newSVpv (perl, ds->ds[i].name, 0), 0))
+ if (NULL == hv_store (source, "name", 4,
+ newSVpv (ds->ds[i].name, 0), 0))
return -1;
- if (NULL == Perl_hv_store (perl, source, "type", 4,
- Perl_newSViv (perl, ds->ds[i].type), 0))
+ if (NULL == hv_store (source, "type", 4, newSViv (ds->ds[i].type), 0))
return -1;
if (! isnan (ds->ds[i].min))
- if (NULL == Perl_hv_store (perl, source, "min", 3,
- Perl_newSVnv (perl, ds->ds[i].min), 0))
+ if (NULL == hv_store (source, "min", 3,
+ newSVnv (ds->ds[i].min), 0))
return -1;
if (! isnan (ds->ds[i].max))
- if (NULL == Perl_hv_store (perl, source, "max", 3,
- Perl_newSVnv (perl, ds->ds[i].max), 0))
+ if (NULL == hv_store (source, "max", 3,
+ newSVnv (ds->ds[i].max), 0))
return -1;
- if (NULL == Perl_av_store (perl, array, i,
- Perl_newRV_noinc (perl, (SV *)source)))
+ if (NULL == av_store (array, i, newRV_noinc ((SV *)source)))
return -1;
}
return 0;
} /* static int data_set2av (data_set_t *, AV *) */
-static int value_list2hv (value_list_t *vl, data_set_t *ds, HV *hash)
+static int value_list2hv (pTHX_ value_list_t *vl, data_set_t *ds, HV *hash)
{
AV *values = NULL;
len = ds->ds_num;
}
- values = Perl_newAV (perl);
- Perl_av_extend (perl, values, len - 1);
+ values = newAV ();
+ av_extend (values, len - 1);
for (i = 0; i < len; ++i) {
SV *val = NULL;
if (DS_TYPE_COUNTER == ds->ds[i].type)
- val = Perl_newSViv (perl, vl->values[i].counter);
+ val = newSViv (vl->values[i].counter);
else
- val = Perl_newSVnv (perl, vl->values[i].gauge);
+ val = newSVnv (vl->values[i].gauge);
- if (NULL == Perl_av_store (perl, values, i, val)) {
- Perl_av_undef (perl, values);
+ if (NULL == av_store (values, i, val)) {
+ av_undef (values);
return -1;
}
}
- if (NULL == Perl_hv_store (perl, hash, "values", 6,
- Perl_newRV_noinc (perl, (SV *)values), 0))
+ if (NULL == hv_store (hash, "values", 6, newRV_noinc ((SV *)values), 0))
return -1;
if (0 != vl->time)
- if (NULL == Perl_hv_store (perl, hash, "time", 4,
- Perl_newSViv (perl, vl->time), 0))
+ if (NULL == hv_store (hash, "time", 4, newSViv (vl->time), 0))
return -1;
if ('\0' != vl->host[0])
- if (NULL == Perl_hv_store (perl, hash, "host", 4,
- Perl_newSVpv (perl, vl->host, 0), 0))
+ if (NULL == hv_store (hash, "host", 4, newSVpv (vl->host, 0), 0))
return -1;
if ('\0' != vl->plugin[0])
- if (NULL == Perl_hv_store (perl, hash, "plugin", 6,
- Perl_newSVpv (perl, vl->plugin, 0), 0))
+ if (NULL == hv_store (hash, "plugin", 6, newSVpv (vl->plugin, 0), 0))
return -1;
if ('\0' != vl->plugin_instance[0])
- if (NULL == Perl_hv_store (perl, hash, "plugin_instance", 15,
- Perl_newSVpv (perl, vl->plugin_instance, 0), 0))
+ if (NULL == hv_store (hash, "plugin_instance", 15,
+ newSVpv (vl->plugin_instance, 0), 0))
return -1;
if ('\0' != vl->type_instance[0])
- if (NULL == Perl_hv_store (perl, hash, "type_instance", 13,
- Perl_newSVpv (perl, vl->type_instance, 0), 0))
+ if (NULL == hv_store (hash, "type_instance", 13,
+ newSVpv (vl->type_instance, 0), 0))
return -1;
return 0;
} /* static int value2av (value_list_t *, data_set_t *, HV *) */
-
/*
* Internal functions.
*/
} /* char *get_module_name */
/*
- * Add a new plugin with the given name.
- */
-static int pplugin_register (int type, const char *name, SV *sub)
-{
- pplugin_t *p = NULL;
-
- if ((type < 0) || (type >= PLUGIN_TYPES))
- return -1;
-
- if (NULL == name)
- return -1;
-
- p = (pplugin_t *)smalloc (sizeof (pplugin_t));
- /* this happens during parsing of config file,
- * thus interval_g is not set correctly */
- p->wait_time = 10;
- p->wait_left = 0;
- p->sub = Perl_newSVsv (perl, sub);
-
- if (NULL == Perl_hv_store (perl, plugins[type], name, strlen (name),
- Perl_sv_setref_pv (perl, Perl_newSV (perl, 0), 0, p), 0)) {
- log_debug ("pplugin_register: Failed to add plugin \"%s\" (\"%s\")",
- name, SvPV_nolen (sub));
- Perl_sv_free (perl, p->sub);
- sfree (p);
- return -1;
- }
- return 0;
-} /* static int pplugin_register (int, char *, SV *) */
-
-/*
- * Removes the plugin with the given name and frees any ressources.
- */
-static int pplugin_unregister (int type, char *name)
-{
- SV *tmp = NULL;
-
- if ((type < 0) || (type >= PLUGIN_TYPES))
- return -1;
-
- if (NULL == name)
- return -1;
-
- /* freeing the allocated memory of the element itself (pplugin_t *) causes
- * a segfault during perl_destruct () thus I assume perl somehow takes
- * care of this... */
-
- tmp = Perl_hv_delete (perl, plugins[type], name, strlen (name), 0);
- if (NULL != tmp) {
- pplugin_t *p = (pplugin_t *)SvIV ((SV *)SvRV (tmp));
- Perl_sv_free (perl, p->sub);
- }
- return 0;
-} /* static int pplugin_unregister (char *) */
-
-/*
* Add a plugin's data set definition.
*/
-static int pplugin_register_data_set (char *name, AV *dataset)
+static int pplugin_register_data_set (pTHX_ char *name, AV *dataset)
{
int len = -1;
int i = 0;
data_source_t *ds = NULL;
data_set_t *set = NULL;
- ds_types_t *types = NULL;
-
if ((NULL == name) || (NULL == dataset))
return -1;
- len = Perl_av_len (perl, dataset);
+ len = av_len (dataset);
if (-1 == len)
return -1;
ds = (data_source_t *)smalloc ((len + 1) * sizeof (data_source_t));
set = (data_set_t *)smalloc (sizeof (data_set_t));
- types = (ds_types_t *)smalloc (sizeof (ds_types_t));
- types->len = len + 1;
- types->values = (int *)smalloc ((types->len) * sizeof (int));
-
for (i = 0; i <= len; ++i) {
- SV **elem = Perl_av_fetch (perl, dataset, i, 0);
+ SV **elem = av_fetch (dataset, i, 0);
if (NULL == elem)
return -1;
return -1;
}
- if (-1 == hv2data_source ((HV *)SvRV (*elem), &ds[i]))
+ if (-1 == hv2data_source (aTHX_ (HV *)SvRV (*elem), &ds[i]))
return -1;
- types->values[i] = ds[i].type;
log_debug ("pplugin_register_data_set: "
"DS.name = \"%s\", DS.type = %i, DS.min = %f, DS.max = %f",
ds[i].name, ds[i].type, ds[i].min, ds[i].max);
}
- if (NULL == Perl_hv_store (perl, data_sets, name, strlen (name),
- Perl_sv_setref_pv (perl, Perl_newSV (perl, 0), 0, types), 0))
- return -1;
-
strncpy (set->type, name, DATA_MAX_NAME_LEN);
set->type[DATA_MAX_NAME_LEN - 1] = '\0';
*/
static int pplugin_unregister_data_set (char *name)
{
- SV *tmp = NULL;
-
if (NULL == name)
return 0;
-
- /* freeing the allocated memory of the element itself (ds_types_t *)
- * causes a segfault during perl_destruct () thus I assume perl somehow
- * takes care of this... */
-
- tmp = Perl_hv_delete (perl, data_sets, name, strlen (name), 0);
- if (NULL != tmp) {
- ds_types_t *ds = (ds_types_t *)SvIV ((SV *)SvRV (tmp));
- sfree (ds->values);
- }
return plugin_unregister_data_set (name);
} /* static int pplugin_unregister_data_set (char *) */
* type_instance => $tinstance,
* }
*/
-static int pplugin_dispatch_values (char *name, HV *values)
+static int pplugin_dispatch_values (pTHX_ char *name, HV *values)
{
value_list_t list = VALUE_LIST_INIT;
value_t *val = NULL;
if ((NULL == name) || (NULL == values))
return -1;
- if ((NULL == (tmp = Perl_hv_fetch (perl, values, "values", 6, 0)))
+ if ((NULL == (tmp = hv_fetch (values, "values", 6, 0)))
|| (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp)))))) {
log_err ("pplugin_dispatch_values: No valid values given.");
return -1;
{
AV *array = (AV *)SvRV (*tmp);
- int len = Perl_av_len (perl, array) + 1;
+ int len = av_len (array) + 1;
+
+ if (len <= 0)
+ return -1;
val = (value_t *)smalloc (len * sizeof (value_t));
- list.values_len = av2value (name, (AV *)SvRV (*tmp), val, len);
+ list.values_len = av2value (aTHX_ name, (AV *)SvRV (*tmp), val, len);
list.values = val;
if (-1 == list.values_len) {
}
}
- if (NULL != (tmp = Perl_hv_fetch (perl, values, "time", 4, 0))) {
+ if (NULL != (tmp = hv_fetch (values, "time", 4, 0))) {
list.time = (time_t)SvIV (*tmp);
}
else {
list.time = time (NULL);
}
- if (NULL != (tmp = Perl_hv_fetch (perl, values, "host", 4, 0))) {
+ if (NULL != (tmp = hv_fetch (values, "host", 4, 0))) {
strncpy (list.host, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
list.host[DATA_MAX_NAME_LEN - 1] = '\0';
}
strcpy (list.host, hostname_g);
}
- if (NULL != (tmp = Perl_hv_fetch (perl, values, "plugin", 6, 0))) {
+ if (NULL != (tmp = hv_fetch (values, "plugin", 6, 0))) {
strncpy (list.plugin, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
list.plugin[DATA_MAX_NAME_LEN - 1] = '\0';
}
- if (NULL != (tmp = Perl_hv_fetch (perl, values,
+ if (NULL != (tmp = hv_fetch (values,
"plugin_instance", 15, 0))) {
strncpy (list.plugin_instance, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
list.plugin_instance[DATA_MAX_NAME_LEN - 1] = '\0';
}
- if (NULL != (tmp = Perl_hv_fetch (perl, values, "type_instance", 13, 0))) {
+ if (NULL != (tmp = hv_fetch (values, "type_instance", 13, 0))) {
strncpy (list.type_instance, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
list.type_instance[DATA_MAX_NAME_LEN - 1] = '\0';
}
} /* static int pplugin_dispatch_values (char *, HV *) */
/*
- * Call a plugin's working function.
+ * Call all working functions of the given type.
*/
-static int pplugin_call (int type, char *name, SV *sub, va_list ap)
+static int pplugin_call_all (pTHX_ int type, ...)
{
int retvals = 0;
- I32 xflags = G_NOARGS;
+ va_list ap;
int ret = 0;
dSP;
if ((type < 0) || (type >= PLUGIN_TYPES))
return -1;
+ va_start (ap, type);
+
ENTER;
SAVETMPS;
PUSHMARK (SP);
+ XPUSHs (sv_2mortal (newSViv ((IV)type)));
+
if (PLUGIN_WRITE == type) {
/*
* $_[0] = $plugin_type;
data_set_t *ds;
value_list_t *vl;
- AV *pds = Perl_newAV (perl);
- HV *pvl = Perl_newHV (perl);
+ AV *pds = newAV ();
+ HV *pvl = newHV ();
ds = va_arg (ap, data_set_t *);
vl = va_arg (ap, value_list_t *);
- if (-1 == data_set2av (ds, pds))
+ if (-1 == data_set2av (aTHX_ ds, pds))
return -1;
- if (-1 == value_list2hv (vl, ds, pvl))
+ if (-1 == value_list2hv (aTHX_ vl, ds, pvl))
return -1;
- XPUSHs (sv_2mortal (Perl_newSVpv (perl, ds->type, 0)));
- XPUSHs (sv_2mortal (Perl_newRV_noinc (perl, (SV *)pds)));
- XPUSHs (sv_2mortal (Perl_newRV_noinc (perl, (SV *)pvl)));
-
- xflags = 0;
+ XPUSHs (sv_2mortal (newSVpv (ds->type, 0)));
+ XPUSHs (sv_2mortal (newRV_noinc ((SV *)pds)));
+ XPUSHs (sv_2mortal (newRV_noinc ((SV *)pvl)));
}
else if (PLUGIN_LOG == type) {
/*
*
* $_[1] = $message;
*/
- XPUSHs (sv_2mortal (Perl_newSViv (perl, va_arg (ap, int))));
- XPUSHs (sv_2mortal (Perl_newSVpv (perl, va_arg (ap, char *), 0)));
-
- xflags = 0;
+ XPUSHs (sv_2mortal (newSViv (va_arg (ap, int))));
+ XPUSHs (sv_2mortal (newSVpv (va_arg (ap, char *), 0)));
}
PUTBACK;
- /* prevent an endless loop */
- if (PLUGIN_LOG != type)
- log_debug ("pplugin_call: executing %s::%s->%s()",
- base_name, name, plugin_types[type]);
-
- retvals = Perl_call_sv (perl, sub, G_SCALAR | xflags);
+ retvals = call_pv ("Collectd::plugin_call_all", G_SCALAR);
SPAGAIN;
- if (1 > retvals) {
- if (PLUGIN_LOG != type)
- log_warn ("pplugin_call: "
- "%s::%s->%s() returned void - assuming true",
- base_name, name, plugin_types[type]);
- }
- else {
+ if (0 < retvals) {
SV *tmp = POPs;
if (! SvTRUE (tmp))
ret = -1;
PUTBACK;
FREETMPS;
LEAVE;
- return ret;
-} /* static int pplugin_call (int, char *, SV *, va_list) */
-/*
- * Call all working functions of the given type.
- */
-static int pplugin_call_all (int type, ...)
-{
- SV *tmp = NULL;
-
- char *plugin;
- I32 len;
-
- if ((type < 0) || (type >= PLUGIN_TYPES))
- return -1;
-
- if (0 == Perl_hv_iterinit (perl, plugins[type]))
- return 0;
-
- while (NULL != (tmp = Perl_hv_iternextsv (perl, plugins[type],
- &plugin, &len))) {
- pplugin_t *p;
- va_list ap;
-
- int status;
-
- va_start (ap, type);
-
- p = (pplugin_t *)SvIV ((SV *)SvRV (tmp));
-
- if (p->wait_left > 0)
- p->wait_left -= interval_g;
-
- if (p->wait_left > 0)
- continue;
-
- if (0 == (status = pplugin_call (type, plugin, p->sub, ap))) {
- p->wait_left = 0;
- p->wait_time = interval_g;
- }
- else if (PLUGIN_READ == type) {
- p->wait_left = p->wait_time;
- p->wait_time <<= 1;
-
- if (p->wait_time > 86400)
- p->wait_time = 86400;
-
- log_warn ("%s->read() failed. Will suspend it for %i seconds.",
- plugin, p->wait_left);
- }
- else if (PLUGIN_INIT == type) {
- int i = 0;
-
- log_err ("%s->init() failed. Plugin will be disabled.",
- plugin, status);
-
- for (i = 0; i < PLUGIN_TYPES; ++i)
- pplugin_unregister (i, plugin);
- }
- else if (PLUGIN_LOG != type) {
- log_warn ("%s->%s() failed with status %i.",
- plugin, plugin_types[type], status);
- }
-
- va_end (ap);
- }
- return 0;
+ va_end (ap);
+ return ret;
} /* static int pplugin_call_all (int, ...) */
-
/*
* Exported Perl API.
*/
/*
- * Collectd::plugin_register (type, name, data).
+ * Collectd::plugin_register_data_set (type, dataset).
*
* type:
- * init, read, write, shutdown, data set
+ * type of the dataset
*
- * name:
- * name of the plugin
- *
- * data:
- * reference to the plugin's subroutine that does the work or the data set
- * definition
+ * dataset:
+ * dataset to be registered
*/
-static XS (Collectd_plugin_register)
+static XS (Collectd_plugin_register_ds)
{
- int type = 0;
SV *data = NULL;
-
- int ret = 0;
+ int ret = 0;
dXSARGS;
- if (3 != items) {
- log_err ("Usage: Collectd::plugin_register(type, name, data)");
+ if (2 != items) {
+ log_err ("Usage: Collectd::plugin_register_data_set(type, dataset)");
XSRETURN_EMPTY;
}
- log_debug ("Collectd::plugin_register: "
- "type = \"%i\", name = \"%s\", \"%s\"",
- (int)SvIV (ST (0)), SvPV_nolen (ST (1)), SvPV_nolen (ST (2)));
+ log_debug ("Collectd::plugin_register_data_set: "
+ "type = \"%s\", dataset = \"%s\"",
+ SvPV_nolen (ST (0)), SvPV_nolen (ST (1)));
- type = (int)SvIV (ST (0));
- data = ST (2);
+ data = ST (1);
- if ((type >= 0) && (type < PLUGIN_TYPES)
- && SvROK (data) && (SVt_PVCV == SvTYPE (SvRV (data)))) {
- ret = pplugin_register (type, SvPV_nolen (ST (1)), data);
- }
- else if ((type == PLUGIN_DATASET)
- && SvROK (data) && (SVt_PVAV == SvTYPE (SvRV (data)))) {
- ret = pplugin_register_data_set (SvPV_nolen (ST (1)),
+ if (SvROK (data) && (SVt_PVAV == SvTYPE (SvRV (data)))) {
+ ret = pplugin_register_data_set (aTHX_ SvPV_nolen (ST (0)),
(AV *)SvRV (data));
}
else {
- log_err ("Collectd::plugin_register: Invalid data.");
+ log_err ("Collectd::plugin_register_data_set: Invalid data.");
XSRETURN_EMPTY;
}
XSRETURN_YES;
else
XSRETURN_EMPTY;
-} /* static XS (Collectd_plugin_register) */
+} /* static XS (Collectd_plugin_register_ds) */
/*
- * Collectd::plugin_unregister (type, name).
+ * Collectd::plugin_unregister_data_set (type).
*
* type:
- * init, read, write, shutdown, data set
- *
- * name:
- * name of the plugin
+ * type of the dataset
*/
-static XS (Collectd_plugin_unregister)
+static XS (Collectd_plugin_unregister_ds)
{
- int type = 0;
- int ret = 0;
-
dXSARGS;
- if (2 != items) {
- log_err ("Usage: Collectd::plugin_unregister(type, name)");
+ if (1 != items) {
+ log_err ("Usage: Collectd::plugin_unregister_data_set(type)");
XSRETURN_EMPTY;
}
- log_debug ("Collectd::plugin_unregister: type = \"%i\", name = \"%s\"",
- (int)SvIV (ST (0)), SvPV_nolen (ST (1)));
-
- type = (int)SvIV (ST (0));
-
- if ((type >= 0) && (type < PLUGIN_TYPES)) {
- ret = pplugin_unregister (type, SvPV_nolen (ST (1)));
- }
- else if (type == PLUGIN_DATASET) {
- ret = pplugin_unregister_data_set (SvPV_nolen (ST (1)));
- }
- else {
- log_err ("Collectd::plugin_unregister: Invalid type.");
- XSRETURN_EMPTY;
- }
+ log_debug ("Collectd::plugin_unregister_data_set: type = \"%s\"",
+ SvPV_nolen (ST (0)));
- if (0 == ret)
+ if (0 == pplugin_unregister_data_set (SvPV_nolen (ST (1))))
XSRETURN_YES;
else
XSRETURN_EMPTY;
-} /* static XS (Collectd_plugin_unregister) */
+} /* static XS (Collectd_plugin_register_ds) */
/*
* Collectd::plugin_dispatch_values (name, values).
if ((NULL == ST (0)) || (NULL == values))
XSRETURN_EMPTY;
- ret = pplugin_dispatch_values (SvPV_nolen (ST (0)), (HV *)SvRV (values));
+ ret = pplugin_dispatch_values (aTHX_ SvPV_nolen (ST (0)),
+ (HV *)SvRV (values));
if (0 == ret)
XSRETURN_YES;
XSRETURN_EMPTY;
}
- log_debug ("Collectd::plugin_log: level = %i, message = \"%s\"",
- SvIV (ST (0)), SvPV_nolen (ST (1)));
plugin_log (SvIV (ST (0)), SvPV_nolen (ST (1)));
XSRETURN_YES;
} /* static XS (Collectd_plugin_log) */
/*
- * Collectd::bootstrap ().
+ * Collectd::call_by_name (...).
+ *
+ * Call a Perl sub identified by its name passed through $Collectd::cb_name.
*/
-static XS (boot_Collectd)
+static XS (Collectd_call_by_name)
{
- HV *stash = NULL;
- char *file = __FILE__;
+ SV *tmp = NULL;
+ char *name = NULL;
- struct {
- char name[64];
- SV *value;
- } consts[] =
- {
- { "Collectd::TYPE_INIT", Perl_newSViv (perl, PLUGIN_INIT) },
- { "Collectd::TYPE_READ", Perl_newSViv (perl, PLUGIN_READ) },
- { "Collectd::TYPE_WRITE", Perl_newSViv (perl, PLUGIN_WRITE) },
- { "Collectd::TYPE_SHUTDOWN", Perl_newSViv (perl, PLUGIN_SHUTDOWN) },
- { "Collectd::TYPE_LOG", Perl_newSViv (perl, PLUGIN_LOG) },
- { "Collectd::TYPE_DATASET", Perl_newSViv (perl, PLUGIN_DATASET) },
- { "Collectd::DS_TYPE_COUNTER", Perl_newSViv (perl, DS_TYPE_COUNTER) },
- { "Collectd::DS_TYPE_GAUGE", Perl_newSViv (perl, DS_TYPE_GAUGE) },
- { "Collectd::LOG_ERR", Perl_newSViv (perl, LOG_ERR) },
- { "Collectd::LOG_WARNING", Perl_newSViv (perl, LOG_WARNING) },
- { "Collectd::LOG_NOTICE", Perl_newSViv (perl, LOG_NOTICE) },
- { "Collectd::LOG_INFO", Perl_newSViv (perl, LOG_INFO) },
- { "Collectd::LOG_DEBUG", Perl_newSViv (perl, LOG_DEBUG) },
- { "", NULL }
- };
-
- int i = 0;
+ if (NULL == (tmp = get_sv ("Collectd::cb_name", 0))) {
+ sv_setpv (get_sv ("@", 1), "cb_name has not been set");
+ CLEAR_STACK_FRAME;
+ return;
+ }
- dXSARGS;
+ name = SvPV_nolen (tmp);
- if ((1 > items) || (2 < items)) {
- log_err ("Usage: Collectd::bootstrap(name[, version])");
- XSRETURN_EMPTY;
+ if (NULL == get_cv (name, 0)) {
+ sv_setpvf (get_sv ("@", 1), "unknown callback \"%s\"", name);
+ CLEAR_STACK_FRAME;
+ return;
}
- XS_VERSION_BOOTCHECK;
+ /* simply pass on the subroutine call without touching the stack,
+ * thus leaving any arguments and return values in place */
+ call_pv (name, 0);
+} /* static XS (Collectd_call_by_name) */
- /* register API */
- for (i = 0; NULL != api[i].f; ++i)
- Perl_newXS (perl, api[i].name, api[i].f, file);
+/*
+ * collectd's perl interpreter based thread implementation.
+ *
+ * This has been inspired by Perl's ithreads introduced in version 5.6.0.
+ */
- stash = Perl_gv_stashpv (perl, "Collectd", 1);
+/* must be called with perl_threads->mutex locked */
+static void c_ithread_destroy (c_ithread_t *ithread)
+{
+ dTHXa (ithread->interp);
- /* export "constants" */
- for (i = 0; NULL != consts[i].value; ++i)
- Perl_newCONSTSUB (perl, stash, consts[i].name, consts[i].value);
- XSRETURN_YES;
-} /* static XS (boot_Collectd) */
+ assert (NULL != perl_threads);
+ PERL_SET_CONTEXT (aTHX);
+ log_debug ("Shutting down Perl interpreter %p...", aTHX);
-/*
- * Interface to collectd.
- */
+#if COLLECT_DEBUG
+ sv_report_used ();
+
+ --perl_threads->number_of_threads;
+#endif /* COLLECT_DEBUG */
+
+ perl_destruct (aTHX);
+ perl_free (aTHX);
+
+ if (NULL == ithread->prev)
+ perl_threads->head = ithread->next;
+ else
+ ithread->prev->next = ithread->next;
+
+ if (NULL == ithread->next)
+ perl_threads->tail = ithread->prev;
+ else
+ ithread->next->prev = ithread->prev;
-static int perl_config (const char *key, const char *value)
+ sfree (ithread);
+ return;
+} /* static void c_ithread_destroy (c_ithread_t *) */
+
+static void c_ithread_destructor (void *arg)
{
- assert (NULL != perl);
+ c_ithread_t *ithread = (c_ithread_t *)arg;
+ c_ithread_t *t = NULL;
- log_debug ("perl_config: key = \"%s\", value=\"%s\"", key, value);
+ if (NULL == perl_threads)
+ return;
- if (0 == strcasecmp (key, "LoadPlugin")) {
- char module_name[DATA_MAX_NAME_LEN];
+ pthread_mutex_lock (&perl_threads->mutex);
- if (get_module_name (module_name, sizeof (module_name), value)
- == NULL) {
- log_err ("Invalid module name %s", value);
- return (1);
- } /* if (get_module_name == NULL) */
+ for (t = perl_threads->head; NULL != t; t = t->next)
+ if (t == ithread)
+ break;
- log_debug ("perl_config: loading perl plugin \"%s\"", value);
- Perl_load_module (perl, PERL_LOADMOD_NOIMPORT,
- Perl_newSVpv (perl, module_name, strlen (module_name)),
- Nullsv);
- }
- else if (0 == strcasecmp (key, "BaseName")) {
- log_debug ("perl_config: Setting plugin basename to \"%s\"", value);
- strncpy (base_name, value, sizeof (base_name));
- base_name[sizeof (base_name) - 1] = '\0';
+ /* the ithread no longer exists */
+ if (NULL == t)
+ return;
+
+ c_ithread_destroy (ithread);
+
+ pthread_mutex_unlock (&perl_threads->mutex);
+ return;
+} /* static void c_ithread_destructor (void *) */
+
+/* must be called with perl_threads->mutex locked */
+static c_ithread_t *c_ithread_create (PerlInterpreter *base)
+{
+ c_ithread_t *t = NULL;
+ dTHXa (NULL);
+
+ assert (NULL != perl_threads);
+
+ t = (c_ithread_t *)smalloc (sizeof (c_ithread_t));
+ memset (t, 0, sizeof (c_ithread_t));
+
+ t->interp = (NULL == base)
+ ? NULL
+ : perl_clone (base, CLONEf_KEEP_PTR_TABLE);
+
+ aTHX = t->interp;
+
+ if (NULL != base) {
+ av_clear (PL_endav);
+ av_undef (PL_endav);
+ PL_endav = Nullav;
}
- else if (0 == strcasecmp (key, "IncludeDir")) {
- Perl_av_unshift (perl, GvAVn (PL_incgv), 1);
- Perl_av_store (perl, GvAVn (PL_incgv),
- 0, Perl_newSVpv (perl, value, strlen (value)));
+
+#if COLLECT_DEBUG
+ ++perl_threads->number_of_threads;
+#endif /* COLLECT_DEBUG */
+
+ t->next = NULL;
+
+ if (NULL == perl_threads->tail) {
+ perl_threads->head = t;
+ t->prev = NULL;
}
else {
- return -1;
+ perl_threads->tail->next = t;
+ t->prev = perl_threads->tail;
}
- return 0;
-} /* static int perl_config (char *, char *) */
+
+ perl_threads->tail = t;
+
+ pthread_setspecific (perl_thr_key, (const void *)t);
+ return t;
+} /* static c_ithread_t *c_ithread_create (PerlInterpreter *) */
+
+/*
+ * Interface to collectd.
+ */
static int perl_init (void)
{
- assert (NULL != perl);
+ dTHX;
+
+ if (NULL == perl_threads)
+ return 0;
+
+ if (NULL == aTHX) {
+ c_ithread_t *t = NULL;
- PERL_SET_CONTEXT (perl);
- return pplugin_call_all (PLUGIN_INIT);
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = c_ithread_create (perl_threads->head->interp);
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ aTHX = t->interp;
+ }
+
+ log_debug ("perl_init: c_ithread: interp = %p (active threads: %i)",
+ aTHX, perl_threads->number_of_threads);
+ return pplugin_call_all (aTHX_ PLUGIN_INIT);
} /* static int perl_init (void) */
static int perl_read (void)
{
- assert (NULL != perl);
+ dTHX;
+
+ if (NULL == perl_threads)
+ return 0;
- PERL_SET_CONTEXT (perl);
- return pplugin_call_all (PLUGIN_READ);
+ if (NULL == aTHX) {
+ c_ithread_t *t = NULL;
+
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = c_ithread_create (perl_threads->head->interp);
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ aTHX = t->interp;
+ }
+
+ log_debug ("perl_read: c_ithread: interp = %p (active threads: %i)",
+ aTHX, perl_threads->number_of_threads);
+ return pplugin_call_all (aTHX_ PLUGIN_READ);
} /* static int perl_read (void) */
static int perl_write (const data_set_t *ds, const value_list_t *vl)
{
- assert (NULL != perl);
+ dTHX;
- PERL_SET_CONTEXT (perl);
- return pplugin_call_all (PLUGIN_WRITE, ds, vl);
+ if (NULL == perl_threads)
+ return 0;
+
+ if (NULL == aTHX) {
+ c_ithread_t *t = NULL;
+
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = c_ithread_create (perl_threads->head->interp);
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ aTHX = t->interp;
+ }
+
+ log_debug ("perl_write: c_ithread: interp = %p (active threads: %i)",
+ aTHX, perl_threads->number_of_threads);
+ return pplugin_call_all (aTHX_ PLUGIN_WRITE, ds, vl);
} /* static int perl_write (const data_set_t *, const value_list_t *) */
static void perl_log (int level, const char *msg)
{
- assert (NULL != perl);
+ dTHX;
+
+ if (NULL == perl_threads)
+ return;
+
+ if (NULL == aTHX) {
+ c_ithread_t *t = NULL;
+
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = c_ithread_create (perl_threads->head->interp);
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ aTHX = t->interp;
+ }
- PERL_SET_CONTEXT (perl);
- pplugin_call_all (PLUGIN_LOG, level, msg);
+ pplugin_call_all (aTHX_ PLUGIN_LOG, level, msg);
return;
} /* static void perl_log (int, const char *) */
static int perl_shutdown (void)
{
- int i = 0;
+ c_ithread_t *t = NULL;
+
int ret = 0;
+ dTHX;
+
+ plugin_unregister_complex_config ("perl");
+
+ if (NULL == perl_threads)
+ return 0;
+
+ if (NULL == aTHX) {
+ c_ithread_t *t = NULL;
+
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = c_ithread_create (perl_threads->head->interp);
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ aTHX = t->interp;
+ }
+
+ log_debug ("perl_shutdown: c_ithread: interp = %p (active threads: %i)",
+ aTHX, perl_threads->number_of_threads);
+
plugin_unregister_log ("perl");
- plugin_unregister_config ("perl");
plugin_unregister_init ("perl");
plugin_unregister_read ("perl");
plugin_unregister_write ("perl");
- assert (NULL != perl);
-
- PERL_SET_CONTEXT (perl);
- ret = pplugin_call_all (PLUGIN_SHUTDOWN);
+ ret = pplugin_call_all (aTHX_ PLUGIN_SHUTDOWN);
- for (i = 0; i < PLUGIN_TYPES; ++i) {
- if (0 < Perl_hv_iterinit (perl, plugins[i])) {
- char *k = NULL;
- I32 l = 0;
-
- while (NULL != Perl_hv_iternextsv (perl, plugins[i], &k, &l)) {
- pplugin_unregister (i, k);
- }
- }
+ pthread_mutex_lock (&perl_threads->mutex);
+ t = perl_threads->tail;
- Perl_hv_undef (perl, plugins[i]);
- }
+ while (NULL != t) {
+ c_ithread_t *thr = t;
- if (0 < Perl_hv_iterinit (perl, data_sets)) {
- char *k = NULL;
- I32 l = 0;
+ /* the pointer has to be advanced before destroying
+ * the thread as this will free the memory */
+ t = t->prev;
- while (NULL != Perl_hv_iternextsv (perl, data_sets, &k, &l)) {
- pplugin_unregister_data_set (k);
- }
+ c_ithread_destroy (thr);
}
- Perl_hv_undef (perl, data_sets);
+ pthread_mutex_unlock (&perl_threads->mutex);
+ pthread_mutex_destroy (&perl_threads->mutex);
-#if COLLECT_DEBUG
- Perl_sv_report_used (perl);
-#endif /* COLLECT_DEBUG */
+ sfree (perl_threads);
- perl_destruct (perl);
- perl_free (perl);
- perl = NULL;
+ pthread_key_delete (perl_thr_key);
PERL_SYS_TERM ();
return ret;
} /* static void perl_shutdown (void) */
+/* bootstrap the Collectd module */
static void xs_init (pTHX)
{
- char *file = __FILE__;
+ HV *stash = NULL;
+ char *file = __FILE__;
- dXSUB_SYS;
+ int i = 0;
- /* build the Collectd module into the perl interpreter */
- Perl_newXS (perl, "Collectd::bootstrap", boot_Collectd, file);
+ dXSUB_SYS;
/* enable usage of Perl modules using shared libraries */
- Perl_newXS (perl, "DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
+ newXS ("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
+
+ /* register API */
+ for (i = 0; NULL != api[i].f; ++i)
+ newXS (api[i].name, api[i].f, file);
+
+ stash = gv_stashpv ("Collectd", 1);
+
+ /* export "constants" */
+ for (i = 0; '\0' != constants[i].name[0]; ++i)
+ newCONSTSUB (stash, constants[i].name, newSViv (constants[i].value));
return;
} /* static void xs_init (pTHX) */
-/*
- * Create the perl interpreter and register it with collectd.
- */
-void module_register (void)
+/* Initialize the global Perl interpreter. */
+static int init_pi (int argc, char **argv)
{
- char *embed_argv[] = { "", "-e", "bootstrap Collectd \""VERSION"\"", NULL };
- int embed_argc = 3;
+ dTHXa (NULL);
- int i = 0;
+ if (NULL != perl_threads)
+ return 0;
+
+ log_info ("Initializing Perl interpreter...");
+#if COLLECT_DEBUG
+ {
+ int i = 0;
+
+ for (i = 0; i < argc; ++i)
+ log_debug ("argv[%i] = \"%s\"", i, argv[i]);
+ }
+#endif /* COLLECT_DEBUG */
+
+ if (0 != pthread_key_create (&perl_thr_key, c_ithread_destructor)) {
+ log_err ("init_pi: pthread_key_create failed");
- log_debug ("module_register: Registering perl plugin...");
+ /* this must not happen - cowardly giving up if it does */
+ exit (1);
+ }
PERL_SYS_INIT3 (&argc, &argv, &environ);
- if (NULL == (perl = perl_alloc ())) {
+ perl_threads = (c_ithread_list_t *)smalloc (sizeof (c_ithread_list_t));
+ memset (perl_threads, 0, sizeof (c_ithread_list_t));
+
+ pthread_mutex_init (&perl_threads->mutex, NULL);
+ /* locking the mutex should not be necessary at this point
+ * but let's just do it for the sake of completeness */
+ pthread_mutex_lock (&perl_threads->mutex);
+
+ perl_threads->head = c_ithread_create (NULL);
+ perl_threads->tail = perl_threads->head;
+
+ if (NULL == (perl_threads->head->interp = perl_alloc ())) {
log_err ("module_register: Not enough memory.");
exit (3);
}
- perl_construct (perl);
+
+ aTHX = perl_threads->head->interp;
+ pthread_mutex_unlock (&perl_threads->mutex);
+
+ perl_construct (aTHX);
PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
- if (0 != perl_parse (perl, xs_init, embed_argc, embed_argv, NULL)) {
+ if (0 != perl_parse (aTHX_ xs_init, argc, argv, NULL)) {
log_err ("module_register: Unable to bootstrap Collectd.");
exit (1);
}
- perl_run (perl);
- for (i = 0; i < PLUGIN_TYPES; ++i)
- plugins[i] = Perl_newHV (perl);
+ /* Set $0 to "collectd" because perl_parse() has to set it to "-e". */
+ sv_setpv (get_sv ("0", 0), "collectd");
- data_sets = Perl_newHV (perl);
+ perl_run (aTHX);
plugin_register_log ("perl", perl_log);
- plugin_register_config ("perl", perl_config, config_keys, config_keys_num);
plugin_register_init ("perl", perl_init);
plugin_register_read ("perl", perl_read);
plugin_register_write ("perl", perl_write);
plugin_register_shutdown ("perl", perl_shutdown);
+ return 0;
+} /* static int init_pi (const char **, const int) */
+
+/*
+ * LoadPlugin "<Plugin>"
+ */
+static int perl_config_loadplugin (pTHX_ oconfig_item_t *ci)
+{
+ char module_name[DATA_MAX_NAME_LEN];
+
+ char *value = NULL;
+
+ if ((0 != ci->children_num) || (1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type))
+ return 1;
+
+ value = ci->values[0].value.string;
+
+ if (NULL == get_module_name (module_name, sizeof (module_name), value)) {
+ log_err ("Invalid module name %s", value);
+ return (1);
+ }
+
+ init_pi (perl_argc, perl_argv);
+ assert (NULL != perl_threads);
+ assert (NULL != perl_threads->head);
+
+ aTHX = perl_threads->head->interp;
+
+ log_debug ("perl_config: loading perl plugin \"%s\"", value);
+ load_module (PERL_LOADMOD_NOIMPORT,
+ newSVpv (module_name, strlen (module_name)), Nullsv);
+ return 0;
+} /* static int perl_config_loadplugin (oconfig_item_it *) */
+
+/*
+ * BaseName "<Name>"
+ */
+static int perl_config_basename (pTHX_ oconfig_item_t *ci)
+{
+ char *value = NULL;
+
+ if ((0 != ci->children_num) || (1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type))
+ return 1;
+
+ value = ci->values[0].value.string;
+
+ log_debug ("perl_config: Setting plugin basename to \"%s\"", value);
+ strncpy (base_name, value, sizeof (base_name));
+ base_name[sizeof (base_name) - 1] = '\0';
+ return 0;
+} /* static int perl_config_basename (oconfig_item_it *) */
+
+/*
+ * EnableDebugger "<Package>"|""
+ */
+static int perl_config_enabledebugger (pTHX_ oconfig_item_t *ci)
+{
+ char *value = NULL;
+
+ if ((0 != ci->children_num) || (1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type))
+ return 1;
+
+ value = ci->values[0].value.string;
+
+ perl_argv = (char **)realloc (perl_argv,
+ (++perl_argc + 1) * sizeof (char *));
+
+ if (NULL == perl_argv) {
+ log_err ("perl_config: Not enough memory.");
+ exit (3);
+ }
+
+ if ('\0' == value[0]) {
+ perl_argv[perl_argc - 1] = "-d";
+ }
+ else {
+ perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 4);
+ sstrncpy (perl_argv[perl_argc - 1], "-d:", 4);
+ sstrncpy (perl_argv[perl_argc - 1] + 3, value, strlen (value) + 1);
+ }
+
+ perl_argv[perl_argc] = NULL;
+ return 0;
+} /* static int perl_config_enabledebugger (oconfig_item_it *) */
+
+/*
+ * IncludeDir "<Dir>"
+ */
+static int perl_config_includedir (pTHX_ oconfig_item_t *ci)
+{
+ char *value = NULL;
+
+ if ((0 != ci->children_num) || (1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type))
+ return 1;
+
+ value = ci->values[0].value.string;
+
+ if (NULL == aTHX) {
+ perl_argv = (char **)realloc (perl_argv,
+ (++perl_argc + 1) * sizeof (char *));
+
+ if (NULL == perl_argv) {
+ log_err ("perl_config: Not enough memory.");
+ exit (3);
+ }
+
+ perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 3);
+ sstrncpy(perl_argv[perl_argc - 1], "-I", 3);
+ sstrncpy(perl_argv[perl_argc - 1] + 2, value, strlen (value) + 1);
+
+ perl_argv[perl_argc] = NULL;
+ }
+ else {
+ /* prepend the directory to @INC */
+ av_unshift (GvAVn (PL_incgv), 1);
+ av_store (GvAVn (PL_incgv), 0, newSVpv (value, strlen (value)));
+ }
+ return 0;
+} /* static int perl_config_includedir (oconfig_item_it *) */
+
+static int perl_config (oconfig_item_t *ci)
+{
+ int i = 0;
+
+ dTHX;
+
+ /* dTHX does not get any valid values in case Perl
+ * has not been initialized */
+ if (NULL == perl_threads)
+ aTHX = NULL;
+
+ for (i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *c = ci->children + i;
+
+ if (0 == strcasecmp (c->key, "LoadPlugin"))
+ perl_config_loadplugin (aTHX_ c);
+ else if (0 == strcasecmp (c->key, "BaseName"))
+ perl_config_basename (aTHX_ c);
+ else if (0 == strcasecmp (c->key, "EnableDebugger"))
+ perl_config_enabledebugger (aTHX_ c);
+ else if (0 == strcasecmp (c->key, "IncludeDir"))
+ perl_config_includedir (aTHX_ c);
+ else
+ log_warn ("Ignoring unknown config key \"%s\".", c->key);
+ }
+ return 0;
+} /* static int perl_config (oconfig_item_t *) */
+
+void module_register (void)
+{
+ perl_argc = 4;
+ perl_argv = (char **)smalloc ((perl_argc + 1) * sizeof (char *));
+
+ /* default options for the Perl interpreter */
+ perl_argv[0] = "";
+ perl_argv[1] = "-MCollectd";
+ perl_argv[2] = "-e";
+ perl_argv[3] = "1";
+ perl_argv[4] = NULL;
+
+ plugin_register_complex_config ("perl", perl_config);
return;
} /* void module_register (void) */