osfmk/kern/ledger.c

110 #define template_lock(template)		lck_mtx_lock(&(template)->lt_lock)
111 #define template_unlock(template)	lck_mtx_unlock(&(template)->lt_lock)
194 	ledger_template_t template;
196 	template = (ledger_template_t)kalloc(sizeof (*template));
197 	if (template == NULL)
200 	template->lt_name = name;
201 	template->lt_refs = 1;
202 	template->lt_cnt = 0;
203 	template->lt_table_size = 1;
204 	template->lt_inuse = 0;
205 	lck_mtx_init(&template->lt_lock, &ledger_lck_grp, LCK_ATTR_NULL);
207 	template->lt_entries = (struct entry_template *)
208 	    kalloc(sizeof (struct entry_template) * template->lt_table_size);
209 	if (template->lt_entries == NULL) {
210 		kfree(template, sizeof (*template));
211 		template = NULL;
214 	return (template);
218 ledger_template_dereference(ledger_template_t template)
220 	template_lock(template);
221 	template->lt_refs--;
222 	template_unlock(template);
224 	if (template->lt_refs == 0)
225 		kfree(template, sizeof (*template));
229  * Add a new entry to the list of entries in a ledger template. There is
235 ledger_entry_add(ledger_template_t template, const char *key,
244 	template_lock(template);
247 	if (template->lt_cnt == template->lt_table_size) {
252 		old_cnt = template->lt_table_size;
256 			template_unlock(template);
259 		memcpy(new_entries, template->lt_entries, old_sz);
261 		template->lt_table_size = old_cnt * 2;
263 		old_entries = template->lt_entries;
265 		TEMPLATE_INUSE(s, template);
266 		template->lt_entries = new_entries;
267 		TEMPLATE_IDLE(s, template);
272 	et = &template->lt_entries[template->lt_cnt];
279 	idx = template->lt_cnt++;
280 	template_unlock(template);
303 ledger_key_lookup(ledger_template_t template, const char *key)
307 	template_lock(template);
308 	for (idx = 0; idx < template->lt_cnt; idx++)
309 		if (template->lt_entries[idx].et_key &&
310 		    (strcmp(key, template->lt_entries[idx].et_key) == 0))
313 	if (idx >= template->lt_cnt)
315 	template_unlock(template);
321  * Create a new ledger based on the specified template.  As part of the
323  * The size of the table is based on the size of the template at the time
324  * the ledger is created.  If additional entries are added to the template
328 ledger_instantiate(ledger_template_t template, int entry_type)
338 	ledger->l_template = template;
342 	template_lock(template);
343 	template->lt_refs++;
344 	ledger->l_size = template->lt_cnt;
345 	template_unlock(template);
350 		ledger_template_dereference(template);
355 	template_lock(template);
356 	assert(ledger->l_size <= template->lt_cnt);
359 		struct entry_template *et = &template->lt_entries[i];
366 		 * If template has a callback, this entry is opted-in,
376 	template_unlock(template);
659 ledger_set_callback(ledger_template_t template, int entry,
665 	if ((entry < 0) || (entry >= template->lt_cnt))
677 	template_lock(template);
678 	et = &template->lt_entries[entry];
681 	template_unlock(template);
691  * Otherwise, if using a ledger template which specified a
975 	 * Since all tasks share a ledger template, we'll just use the