osfmk/kern/ledger.c

113 #define template_lock(template)		lck_mtx_lock(&(template)->lt_lock)
114 #define template_unlock(template)	lck_mtx_unlock(&(template)->lt_lock)
210 	ledger_template_t template;
212 	template = (ledger_template_t)kalloc(sizeof (*template));
213 	if (template == NULL)
216 	template->lt_name = name;
217 	template->lt_refs = 1;
218 	template->lt_cnt = 0;
219 	template->lt_table_size = 1;
220 	template->lt_inuse = 0;
221 	lck_mtx_init(&template->lt_lock, &ledger_lck_grp, LCK_ATTR_NULL);
223 	template->lt_entries = (struct entry_template *)
224 	    kalloc(sizeof (struct entry_template) * template->lt_table_size);
225 	if (template->lt_entries == NULL) {
226 		kfree(template, sizeof (*template));
227 		template = NULL;
230 	return (template);
234 ledger_template_dereference(ledger_template_t template)
236 	template_lock(template);
237 	template->lt_refs--;
238 	template_unlock(template);
240 	if (template->lt_refs == 0)
241 		kfree(template, sizeof (*template));
245  * Add a new entry to the list of entries in a ledger template. There is
251 ledger_entry_add(ledger_template_t template, const char *key,
260 	template_lock(template);
263 	if (template->lt_cnt == template->lt_table_size) {
268 		old_cnt = template->lt_table_size;
272 			template_unlock(template);
275 		memcpy(new_entries, template->lt_entries, old_sz);
277 		template->lt_table_size = old_cnt * 2;
279 		old_entries = template->lt_entries;
281 		TEMPLATE_INUSE(s, template);
282 		template->lt_entries = new_entries;
283 		TEMPLATE_IDLE(s, template);
288 	et = &template->lt_entries[template->lt_cnt];
295 	idx = template->lt_cnt++;
296 	template_unlock(template);
319 ledger_key_lookup(ledger_template_t template, const char *key)
323 	template_lock(template);
324 	for (idx = 0; idx < template->lt_cnt; idx++)
325 		if (template->lt_entries[idx].et_key &&
326 		    (strcmp(key, template->lt_entries[idx].et_key) == 0))
329 	if (idx >= template->lt_cnt)
331 	template_unlock(template);
337  * Create a new ledger based on the specified template.  As part of the
339  * The size of the table is based on the size of the template at the time
340  * the ledger is created.  If additional entries are added to the template
344 ledger_instantiate(ledger_template_t template, int entry_type)
354 	ledger->l_template = template;
358 	template_lock(template);
359 	template->lt_refs++;
360 	ledger->l_size = template->lt_cnt;
361 	template_unlock(template);
366 		ledger_template_dereference(template);
371 	template_lock(template);
372 	assert(ledger->l_size <= template->lt_cnt);
375 		struct entry_template *et = &template->lt_entries[i];
382 		 * If template has a callback, this entry is opted-in,
394 	template_unlock(template);
784  * They must have been created from the same template.
943 ledger_track_maximum(ledger_template_t template, int entry,
946 	template_lock(template);
948 	if ((entry < 0) || (entry >= template->lt_cnt)) {
949 		template_unlock(template);
953 	template->lt_entries[entry].et_flags |= LF_TRACKING_MAX;
954 	template_unlock(template);
960 ledger_panic_on_negative(ledger_template_t template, int entry)
962 	template_lock(template);
964 	if ((entry < 0) || (entry >= template->lt_cnt)) {
965 		template_unlock(template);
969 	template->lt_entries[entry].et_flags |= LF_PANIC_ON_NEGATIVE;
971 	template_unlock(template);
979 ledger_set_callback(ledger_template_t template, int entry,
985 	if ((entry < 0) || (entry >= template->lt_cnt))
997 	template_lock(template);
998 	et = &template->lt_entries[entry];
1001 	template_unlock(template);
1011  * Otherwise, if using a ledger template which specified a
1487 	 * Since all tasks share a ledger template, we'll just use the