/*
- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_OSREFERENCE_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.
+ * Copyright (c) 2000-2018 Apple Inc. All rights reserved.
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * 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@
*/
/* 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/vm.h>
#include <sys/sysctl.h>
-#ifdef GPROF
-#include <sys/gmon.h>
-#endif
-
#include <kern/thread.h>
#include <kern/ast.h>
#include <kern/assert.h>
#include <kern/thread_call.h>
void bsd_uprofil(struct time_value *syst, user_addr_t pc);
-void get_procrustime(time_value_t *tv);
-int sysctl_clockrate(user_addr_t where, size_t *sizep);
int tvtohz(struct timeval *tv);
-extern void psignal_sigprof(struct proc *);
-extern void psignal_vtalarm(struct proc *);
-extern void psignal_xcpu(struct proc *);
/*
* Clock handling routines.
* times per second, is used to do scheduling and timeout calculations.
* The second timer does resource utilization estimation statistically
* based on the state of the machine phz times a second. Both functions
- * can be performed by a single clock (ie hz == phz), however the
+ * can be performed by a single clock (ie hz == phz), however the
* statistics will be much more prone to errors. Ideally a machine
* would have separate clocks measuring time spent in user state, system
* state, interrupt state, and idle state. These clocks would allow a non-
/*
* 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 hz = 100; /* GET RID OF THIS !!! */
int tick = (1000000 / 100); /* GET RID OF THIS !!! */
-int bsd_hardclockinit = 0;
-/*ARGSUSED*/
-void
-bsd_hardclock(
- boolean_t usermode,
-#ifdef GPROF
- caddr_t pc,
-#else
- __unused caddr_t pc,
-#endif
- int numticks
- )
-{
- register struct proc *p;
- register thread_t thread;
- int nusecs = numticks * tick;
- struct timeval tv;
-
- if (!bsd_hardclockinit)
- return;
-
- if (bsd_hardclockinit < 0) {
- return;
- }
-
- thread = current_thread();
- /*
- * 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) == 0)) {
- 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)) {
-
- /* does psignal(p, SIGVTALRM) in a thread context */
- thread_call_func((thread_call_func_t)psignal_vtalarm, p, FALSE);
- }
- }
-
- /*
- * 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) {
-
- /* 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)) {
-
- /* does psignal(p, SIGPROF) in a thread context */
- thread_call_func((thread_call_func_t)psignal_sigprof, p, FALSE);
- }
- }
- }
-
-#ifdef GPROF
- /*
- * Gather some statistics.
- */
- gatherstats(usermode, pc);
-#endif
-}
-
-/*
- * Gather some statistics.
- */
-/*ARGSUSED*/
-void
-gatherstats(
-#ifdef GPROF
- boolean_t usermode,
- caddr_t pc
-#else
- __unused boolean_t usermode,
- __unused caddr_t pc
-#endif
- )
-
-{
-#ifdef GPROF
- if (!usermode) {
- struct gmonparam *p = &_gmonparam;
-
- if (p->state == GMON_PROF_ON) {
- register int s;
-
- s = pc - p->lowpc;
- if (s < p->textsize) {
- s /= (HISTFRACTION * sizeof(*p->kcount));
- p->kcount[s]++;
- }
- }
- }
-#endif
-}
-
-
/*
* Kernel timeout services.
*/
*/
void
timeout(
- timeout_fcn_t fcn,
- void *param,
- int interval)
+ timeout_fcn_t fcn,
+ void *param,
+ int interval)
{
- uint64_t deadline;
+ uint64_t deadline;
clock_interval_to_deadline(interval, NSEC_PER_SEC / hz, &deadline);
thread_call_func_delayed((thread_call_func_t)fcn, param, deadline);
}
+/*
+ * 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.
+ */
+void
+timeout_with_leeway(
+ timeout_fcn_t fcn,
+ void *param,
+ int interval,
+ int leeway_interval)
+{
+ uint64_t deadline;
+ uint64_t leeway;
+
+ clock_interval_to_deadline(interval, NSEC_PER_SEC / hz, &deadline);
+
+ clock_interval_to_absolutetime_interval(leeway_interval, NSEC_PER_SEC / hz, &leeway);
+
+ thread_call_func_delayed_with_leeway((thread_call_func_t)fcn, param, deadline, leeway, THREAD_CALL_DELAY_LEEWAY);
+}
+
/*
* 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)
+ timeout_fcn_t fcn,
+ void *param)
{
thread_call_func_cancel((thread_call_func_t)fcn, param, FALSE);
}
*/
void
bsd_timeout(
- timeout_fcn_t fcn,
- void *param,
+ timeout_fcn_t fcn,
+ void *param,
struct timespec *ts)
{
- uint64_t deadline = 0;
+ uint64_t deadline = 0;
if (ts && (ts->tv_sec || ts->tv_nsec)) {
- nanoseconds_to_absolutetime((uint64_t)ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec, &deadline );
+ 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
bsd_untimeout(
- register timeout_fcn_t fcn,
- register void *param)
+ timeout_fcn_t fcn,
+ void *param)
{
thread_call_func_cancel((thread_call_func_t)fcn, param, FALSE);
}
* absolute time.
*/
int
-hzto(tv)
- struct timeval *tv;
+hzto(struct timeval *tv)
{
struct timeval now;
- register long ticks;
- register long sec;
+ long ticks;
+ long sec;
microtime(&now);
/*
* Maximum value for any timeout in 10ms ticks is 250 days.
*/
sec = tv->tv_sec - now.tv_sec;
- if (sec <= 0x7fffffff / 1000 - 1000)
+ if (sec <= 0x7fffffff / 1000 - 1000) {
ticks = ((tv->tv_sec - now.tv_sec) * 1000 +
- (tv->tv_usec - now.tv_usec) / 1000)
- / (tick / 1000);
- else if (sec <= 0x7fffffff / hz)
+ (tv->tv_usec - now.tv_usec) / 1000)
+ / (tick / 1000);
+ } else if (sec <= 0x7fffffff / hz) {
ticks = sec * hz;
- else
+ } else {
ticks = 0x7fffffff;
+ }
- return (ticks);
+ return ticks;
}
/*
* Return information about system clocks.
*/
-int
-sysctl_clockrate(user_addr_t 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, USER_ADDR_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(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
usec -= 1000000;
}
printf("tvotohz: negative time difference %ld sec %ld usec\n",
- sec, usec);
+ sec, usec);
#endif
ticks = 1;
- } else if (sec <= LONG_MAX / 1000000)
+ } else if (sec <= LONG_MAX / 1000000) {
ticks = (sec * 1000000 + (unsigned long)usec + (tick - 1))
- / tick + 1;
- else if (sec <= LONG_MAX / hz)
+ / tick + 1;
+ } else if (sec <= LONG_MAX / hz) {
ticks = sec * hz
- + ((unsigned long)usec + (tick - 1)) / tick + 1;
- else
+ + ((unsigned long)usec + (tick - 1)) / tick + 1;
+ } else {
ticks = LONG_MAX;
- if (ticks > INT_MAX)
+ }
+ if (ticks > INT_MAX) {
ticks = INT_MAX;
- return ((int)ticks);
-}
-
-
-/*
- * Start profiling on a process.
- *
- * Kernel profiling passes kernel_proc which never exits and hence
- * keeps the profile clock running constantly.
- */
-void
-startprofclock(p)
- register struct proc *p;
-{
- if ((p->p_flag & P_PROFIL) == 0)
- p->p_flag |= P_PROFIL;
-}
-
-/*
- * Stop profiling on a process.
- */
-void
-stopprofclock(p)
- register struct proc *p;
-{
- if (p->p_flag & P_PROFIL)
- p->p_flag &= ~P_PROFIL;
-}
-
-void
-bsd_uprofil(struct time_value *syst, user_addr_t pc)
-{
-struct proc *p = current_proc();
-int ticks;
-struct timeval *tv;
-struct timeval st;
-
- if (p == NULL)
- return;
- if ( !(p->p_flag & P_PROFIL))
- return;
-
- st.tv_sec = syst->seconds;
- st.tv_usec = syst->microseconds;
-
- tv = &(p->p_stats->p_ru.ru_stime);
-
- ticks = ((tv->tv_sec - st.tv_sec) * 1000 +
- (tv->tv_usec - st.tv_usec) / 1000) /
- (tick / 1000);
- if (ticks)
- addupc_task(p, pc, ticks);
+ }
+ return (int)ticks;
}
+/* TBD locking user profiling is not resolved yet */
void
get_procrustime(time_value_t *tv)
{
struct proc *p = current_proc();
struct timeval st;
- if (p == NULL)
+ if (p == NULL) {
+ return;
+ }
+ if (!(p->p_flag & P_PROFIL)) {
return;
- 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;
}
projects / apple / xnu.git / blobdiff