/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*-
* HISTORY
*/
-#include <machine/spl.h>
-
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/resource.h>
-#include <sys/proc.h>
+#include <sys/proc_internal.h>
#include <sys/vm.h>
+#include <sys/sysctl.h>
#ifdef GPROF
#include <sys/gmon.h>
#include <kern/thread_call.h>
+void bsd_uprofil(struct time_value *syst, user_addr_t pc);
+int tvtohz(struct timeval *tv);
+
/*
* Clock handling routines.
*
/*
* The hz hardware interval timer.
- * We update the events relating to real time.
- * If this timer is also being used to gather statistics,
- * we run through the statistics gathering routine as well.
*/
-int bsd_hardclockinit = 0;
-/*ARGSUSED*/
-void
-bsd_hardclock(usermode, pc, numticks)
- boolean_t usermode;
- caddr_t pc;
- int numticks;
-{
- register struct proc *p;
- register thread_t thread;
- int nusecs = numticks * tick;
- struct timeval tv;
-
- if (!bsd_hardclockinit)
- return;
-
- /*
- * Increment the time-of-day.
- */
- microtime(&tv);
- time = tv;
-
- if (bsd_hardclockinit < 0) {
- return;
- }
+int hz = 100; /* GET RID OF THIS !!! */
+int tick = (1000000 / 100); /* GET RID OF THIS !!! */
- thread = current_act();
- /*
- * Charge the time out based on the mode the cpu is in.
- * Here again we fudge for the lack of proper interval timers
- * assuming that the current state has been around at least
- * one tick.
- */
- p = (struct proc *)current_proc();
- if (p && ((p->p_flag & P_WEXIT) == NULL)) {
- if (usermode) {
- if (p->p_stats && p->p_stats->p_prof.pr_scale) {
- p->p_flag |= P_OWEUPC;
- astbsd_on();
- }
-
- /*
- * CPU was in user state. Increment
- * user time counter, and process process-virtual time
- * interval timer.
- */
- if (p->p_stats &&
- timerisset(&p->p_stats->p_timer[ITIMER_VIRTUAL].it_value) &&
- !itimerdecr(&p->p_stats->p_timer[ITIMER_VIRTUAL], nusecs)) {
- extern void psignal_vtalarm(struct proc *);
-
- /* does psignal(p, SIGVTALRM) in a thread context */
- thread_call_func((thread_call_func_t)psignal_vtalarm, p, FALSE);
- }
- }
+/*
+ * Kernel timeout services.
+ */
- /*
- * If the cpu is currently scheduled to a process, then
- * charge it with resource utilization for a tick, updating
- * statistics which run in (user+system) virtual time,
- * such as the cpu time limit and profiling timers.
- * This assumes that the current process has been running
- * the entire last tick.
- */
- if (!is_thread_idle(thread)) {
- if (p->p_limit &&
- p->p_limit->pl_rlimit[RLIMIT_CPU].rlim_cur != RLIM_INFINITY) {
- time_value_t sys_time, user_time;
-
- thread_read_times(thread, &user_time, &sys_time);
- if ((sys_time.seconds + user_time.seconds + 1) >
- p->p_limit->pl_rlimit[RLIMIT_CPU].rlim_cur) {
- extern void psignal_xcpu(struct proc *);
-
- /* does psignal(p, SIGXCPU) in a thread context */
- thread_call_func((thread_call_func_t)psignal_xcpu, p, FALSE);
-
- if (p->p_limit->pl_rlimit[RLIMIT_CPU].rlim_cur <
- p->p_limit->pl_rlimit[RLIMIT_CPU].rlim_max)
- p->p_limit->pl_rlimit[RLIMIT_CPU].rlim_cur += 5;
- }
- }
- if (timerisset(&p->p_stats->p_timer[ITIMER_PROF].it_value) &&
- !itimerdecr(&p->p_stats->p_timer[ITIMER_PROF], nusecs)) {
- extern void psignal_sigprof(struct proc *);
-
- /* does psignal(p, SIGPROF) in a thread context */
- thread_call_func((thread_call_func_t)psignal_sigprof, p, FALSE);
- }
- }
- }
+/*
+ * Set a timeout.
+ *
+ * fcn: function to call
+ * param: parameter to pass to function
+ * interval: timeout interval, in hz.
+ */
+void
+timeout(
+ timeout_fcn_t fcn,
+ void *param,
+ int interval)
+{
+ uint64_t deadline;
-#ifdef GPROF
- /*
- * Gather some statistics.
- */
- gatherstats(usermode, pc);
-#endif
+ clock_interval_to_deadline(interval, NSEC_PER_SEC / hz, &deadline);
+ thread_call_func_delayed((thread_call_func_t)fcn, param, deadline);
}
/*
- * Gather some statistics.
+ * Set a timeout with leeway.
+ *
+ * fcn: function to call
+ * param: parameter to pass to function
+ * interval: timeout interval, in hz.
+ * leeway_interval: leeway interval, in hz.
*/
-/*ARGSUSED*/
void
-gatherstats(
- boolean_t usermode,
- caddr_t pc)
+timeout_with_leeway(
+ timeout_fcn_t fcn,
+ void *param,
+ int interval,
+ int leeway_interval)
{
-#ifdef GPROF
- if (!usermode) {
- struct gmonparam *p = &_gmonparam;
+ uint64_t deadline;
+ uint64_t leeway;
+
+ clock_interval_to_deadline(interval, NSEC_PER_SEC / hz, &deadline);
- if (p->state == GMON_PROF_ON) {
- register int s;
+ clock_interval_to_absolutetime_interval(leeway_interval, NSEC_PER_SEC / hz, &leeway);
- s = pc - p->lowpc;
- if (s < p->textsize) {
- s /= (HISTFRACTION * sizeof(*p->kcount));
- p->kcount[s]++;
- }
- }
- }
-#endif
+ thread_call_func_delayed_with_leeway((thread_call_func_t)fcn, param, deadline, leeway, THREAD_CALL_DELAY_LEEWAY);
}
-
/*
- * Kernel timeout services.
+ * Cancel a timeout.
+ * Deprecated because it's very inefficient.
+ * Switch to an allocated thread call instead.
*/
+void
+untimeout(
+ timeout_fcn_t fcn,
+ void *param)
+{
+ thread_call_func_cancel((thread_call_func_t)fcn, param, FALSE);
+}
+
/*
* Set a timeout.
*
* fcn: function to call
* param: parameter to pass to function
- * interval: timeout interval, in hz.
+ * ts: timeout interval, in timespec
*/
void
-timeout(
+bsd_timeout(
timeout_fcn_t fcn,
void *param,
- int interval)
+ struct timespec *ts)
{
- uint64_t deadline;
+ uint64_t deadline = 0;
- clock_interval_to_deadline(interval, NSEC_PER_SEC / hz, &deadline);
+ if (ts && (ts->tv_sec || ts->tv_nsec)) {
+ nanoseconds_to_absolutetime((uint64_t)ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec, &deadline );
+ clock_absolutetime_interval_to_deadline( deadline, &deadline );
+ }
thread_call_func_delayed((thread_call_func_t)fcn, param, deadline);
}
/*
* Cancel a timeout.
+ * Deprecated because it's very inefficient.
+ * Switch to an allocated thread call instead.
*/
void
-untimeout(
- register timeout_fcn_t fcn,
- register void *param)
+bsd_untimeout(
+ timeout_fcn_t fcn,
+ void *param)
{
thread_call_func_cancel((thread_call_func_t)fcn, param, FALSE);
}
-
/*
* Compute number of hz until specified time.
* Used to compute third argument to timeout() from an
* absolute time.
*/
-hzto(tv)
- struct timeval *tv;
+int
+hzto(struct timeval *tv)
{
struct timeval now;
- register long ticks;
- register long sec;
+ long ticks;
+ long sec;
microtime(&now);
/*
/*
* Return information about system clocks.
*/
-int
-sysctl_clockrate(where, sizep)
- register char *where;
- size_t *sizep;
+static int
+sysctl_clockrate
+(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req)
{
- struct clockinfo clkinfo;
-
- /*
- * Construct clockinfo structure.
- */
- clkinfo.hz = hz;
- clkinfo.tick = tick;
- clkinfo.profhz = hz;
- clkinfo.stathz = hz;
- return sysctl_rdstruct(where, sizep, NULL, &clkinfo, sizeof(clkinfo));
+ struct clockinfo clkinfo = {
+ .hz = hz,
+ .tick = tick,
+ .tickadj = 0,
+ .stathz = hz,
+ .profhz = hz,
+ };
+
+ return sysctl_io_opaque(req, &clkinfo, sizeof(clkinfo), NULL);
}
+SYSCTL_PROC(_kern, KERN_CLOCKRATE, clockrate,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
+ 0, 0, sysctl_clockrate, "S,clockinfo", "");
+
/*
* Compute number of ticks in the specified amount of time.
*/
int
-tvtohz(tv)
- struct timeval *tv;
+tvtohz(struct timeval *tv)
{
- register unsigned long ticks;
- register long sec, usec;
+ unsigned long ticks;
+ long sec, usec;
/*
* If the number of usecs in the whole seconds part of the time
* keeps the profile clock running constantly.
*/
void
-startprofclock(p)
- register struct proc *p;
+startprofclock(struct proc *p)
{
if ((p->p_flag & P_PROFIL) == 0)
- p->p_flag |= P_PROFIL;
+ OSBitOrAtomic(P_PROFIL, &p->p_flag);
}
/*
* Stop profiling on a process.
*/
void
-stopprofclock(p)
- register struct proc *p;
+stopprofclock(struct proc *p)
{
if (p->p_flag & P_PROFIL)
- p->p_flag &= ~P_PROFIL;
+ OSBitAndAtomic(~((uint32_t)P_PROFIL), &p->p_flag);
}
+/* TBD locking user profiling is not resolved yet */
void
-bsd_uprofil(struct time_value *syst, unsigned int pc)
+bsd_uprofil(struct time_value *syst, user_addr_t pc)
{
-struct proc *p = current_proc();
-int ticks;
-struct timeval *tv;
-struct timeval st;
+ struct proc *p = current_proc();
+ int ticks;
+ struct timeval *tv;
+ struct timeval st;
if (p == NULL)
return;
addupc_task(p, pc, ticks);
}
+/* TBD locking user profiling is not resolved yet */
void
get_procrustime(time_value_t *tv)
{
if ( !(p->p_flag & P_PROFIL))
return;
+ //proc_lock(p);
st = p->p_stats->p_ru.ru_stime;
+ //proc_unlock(p);
tv->seconds = st.tv_sec;
tv->microseconds = st.tv_usec;
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