X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e..593a1d5fd87cdf5b46dd5fcb84467b432cea0f91:/osfmk/kern/timer_call.c?ds=inline diff --git a/osfmk/kern/timer_call.c b/osfmk/kern/timer_call.c index b1eec55f1..941061c3d 100644 --- a/osfmk/kern/timer_call.c +++ b/osfmk/kern/timer_call.c @@ -1,58 +1,49 @@ /* - * Copyright (c) 1993-1995, 1999-2004 Apple Computer, Inc. - * All rights reserved. + * Copyright (c) 1993-2007 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the - * License may not be used to create, or enable the creation or - * redistribution of, unlawful or unlicensed copies of an Apple operating - * system, or to circumvent, violate, or enable the circumvention or - * violation of, any terms of an Apple operating system software license - * agreement. - * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Timer interrupt callout module. - * - * HISTORY - * - * 20 December 2000 (debo) - * Created. */ #include #include #include - +#include #include #include #include -decl_simple_lock_data(static,timer_call_lock) +#if CONFIG_DTRACE && (DEVELOPMENT || DEBUG ) +#include +#endif -static struct { - int delayed_num, - delayed_hiwat; -} timer_call_vars; +decl_simple_lock_data(static,timer_call_lock) static void timer_call_interrupt( @@ -107,8 +98,6 @@ _delayed_call_enqueue( } insque(qe(call), qe(current)); - if (++timer_call_vars.delayed_num > timer_call_vars.delayed_hiwat) - timer_call_vars.delayed_hiwat = timer_call_vars.delayed_num; call->state = DELAYED; } @@ -119,7 +108,6 @@ _delayed_call_dequeue( timer_call_t call) { (void)remque(qe(call)); - timer_call_vars.delayed_num--; call->state = IDLE; } @@ -149,7 +137,7 @@ timer_call_enter( else result = FALSE; - call->param1 = 0; + call->param1 = NULL; call->deadline = deadline; queue = &PROCESSOR_DATA(current_processor(), timer_call_queue); @@ -209,8 +197,18 @@ timer_call_cancel( s = splclock(); simple_lock(&timer_call_lock); - if (call->state == DELAYED) - _delayed_call_dequeue(call); + if (call->state == DELAYED) { + queue_t queue = &PROCESSOR_DATA(current_processor(), timer_call_queue); + + if (queue_first(queue) == qe(call)) { + _delayed_call_dequeue(call); + + if (!queue_empty(queue)) + _set_delayed_call_timer((timer_call_t)queue_first(queue)); + } + else + _delayed_call_dequeue(call); + } else result = FALSE; @@ -279,10 +277,8 @@ timer_call_shutdown( simple_unlock(&timer_call_lock); } -static -void -timer_call_interrupt( - uint64_t timestamp) +static void +timer_call_interrupt(uint64_t timestamp) { timer_call_t call; queue_t queue; @@ -294,7 +290,6 @@ timer_call_interrupt( call = TC(queue_first(queue)); while (!queue_end(queue, qe(call))) { - if (call->deadline <= timestamp) { timer_call_func_t func; timer_call_param_t param0, param1; @@ -307,15 +302,36 @@ timer_call_interrupt( simple_unlock(&timer_call_lock); - KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, 2) | DBG_FUNC_START, (int)func, param0, param1, 0, 0); + KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, + 2) + | DBG_FUNC_START, + (unsigned int)func, + (unsigned int)param0, + (unsigned int)param1, 0, 0); + +#if CONFIG_DTRACE && (DEVELOPMENT || DEBUG ) + DTRACE_TMR3(callout__start, timer_call_func_t, func, + timer_call_param_t, param0, + timer_call_param_t, param1); +#endif (*func)(param0, param1); - KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, 2) | DBG_FUNC_END, (int)func, param0, param1, 0, 0); +#if CONFIG_DTRACE && (DEVELOPMENT || DEBUG ) + DTRACE_TMR3(callout__end, timer_call_func_t, func, + timer_call_param_t, param0, + timer_call_param_t, param1); +#endif + + KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, + 2) + | DBG_FUNC_END, + (unsigned int)func, + (unsigned int)param0, + (unsigned int)param1, 0, 0); simple_lock(&timer_call_lock); - } - else + } else break; call = TC(queue_first(queue)); @@ -325,5 +341,4 @@ timer_call_interrupt( _set_delayed_call_timer(call); simple_unlock(&timer_call_lock); - }