osfmk/kern/ledger.c

54 #define	LF_CALLED_BACK          0x1000	/* callback was called for balance in deficit */
55 #define	LF_WARNED               0x2000	/* callback was called for balance warning */
56 #define	LF_TRACKING_MAX		0x4000	/* track max balance over user-specfied time */
127  * Use 2 "tocks" to track the rolling maximum balance of a ledger entry.
150 			uint32_t 	le_max;  /* Lower 32-bits of observed max balance */
462 	ledger_amount_t balance;
470 	balance = le->le_credit - le->le_debit;
471 	if ((le->le_warn_level != LEDGER_LIMIT_INFINITY) && (balance > le->le_warn_level))
482 	ledger_amount_t balance;
486 	balance = le->le_credit - le->le_debit;
487 	if ((le->le_limit <= 0) && (balance < le->le_limit))
490 	if ((le->le_limit > 0) && (balance > le->le_limit))
534 	ledger_amount_t balance, due;
586 	balance = le->le_credit - le->le_debit;
588 	if (balance - due < 0)
589 		due = balance;
602 	if (balance == due)
609 	lprintf(("Refill %lld %lld->%lld\n", periods, balance, balance - due));
661 		ledger_amount_t balance = le->le_credit - le->le_debit;
665 		if (!TOCKSTAMP_IS_STALE(now, p->le_time) || (balance > p->le_max)) {
667 			 * The current balance is greater than the previously
672 			 * (We only track the lower 32-bits of a balance for rolling
675 			p->le_max = (uint32_t)balance;
705 		 * The balance on the account is below the limit.
716 			 * the ledger's balance crosses into or out of the warning
721 		 		 * This ledger's balance is above the warning level.
734 				 * This ledger's balance is below the warning level.
741 					 * know the ledger balance is now back below
777  * Zero the balance of a ledger by adding to its credit or debit, whichever is smaller.
823  * current balance, so the change doesn't affect the thread until the
827  * the balance exceeds this level. Specified as a percentage [of the limit].
883 	 * Start with the current balance; if neither of the recorded peaks are
893 		    	 * is greater than the current balance -- so use it.
1050 	 * we're resetting the balance to zero here, we consider this
1051 	 * moment the starting time for accumulating a balance that
1271 				 * This needs to happen both when the balance rises above
1381 ledger_get_balance(ledger_t ledger, int entry, ledger_amount_t *balance)
1392 	*balance = le->le_credit - le->le_debit;