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 */
128  * Use 2 "tocks" to track the rolling maximum balance of a ledger entry.
151 			uint32_t 	le_max;  /* Lower 32-bits of observed max balance */
463 	ledger_amount_t balance;
471 	balance = le->le_credit - le->le_debit;
472 	if ((le->le_warn_level != LEDGER_LIMIT_INFINITY) && (balance > le->le_warn_level))
483 	ledger_amount_t balance;
487 	balance = le->le_credit - le->le_debit;
488 	if ((le->le_limit <= 0) && (balance < le->le_limit))
491 	if ((le->le_limit > 0) && (balance > le->le_limit))
535 	ledger_amount_t balance, due;
587 	balance = le->le_credit - le->le_debit;
589 	if (balance - due < 0)
590 		due = balance;
603 	if (balance == due)
610 	lprintf(("Refill %lld %lld->%lld\n", periods, balance, balance - due));
662 		ledger_amount_t balance = le->le_credit - le->le_debit;
666 		if (!TOCKSTAMP_IS_STALE(now, p->le_time) || (balance > p->le_max)) {
668 			 * The current balance is greater than the previously
673 			 * (We only track the lower 32-bits of a balance for rolling
676 			p->le_max = (uint32_t)balance;
706 		 * The balance on the account is below the limit.
717 			 * the ledger's balance crosses into or out of the warning
722 		 		 * This ledger's balance is above the warning level.
735 				 * This ledger's balance is below the warning level.
742 					 * know the ledger balance is now back below
753 		panic("ledger_check_new_balance(%p,%d): negative ledger %p balance:%lld\n",
789  * otherwise synchronized) may see a bogus balance.
812  * Zero the balance of a ledger by adding to its credit or debit, whichever is smaller.
858  * current balance, so the change doesn't affect the thread until the
862  * the balance exceeds this level. Specified as a percentage [of the limit].
918 	 * Start with the current balance; if neither of the recorded peaks are
928 		    	 * is greater than the current balance -- so use it.
1101 	 * we're resetting the balance to zero here, we consider this
1102 	 * moment the starting time for accumulating a balance that
1322 				 * This needs to happen both when the balance rises above
1462 ledger_get_balance(ledger_t ledger, int entry, ledger_amount_t *balance)
1473 	*balance = le->le_credit - le->le_debit;