From ee6b343cbaa434d8c31a4d71dac5316b4404da35 Mon Sep 17 00:00:00 2001 From: Christian Mauderer Date: Thu, 10 May 2012 15:06:10 +0200 Subject: Provide SWI(9) and TIMEOUT(9) --- Makefile | 3 +- freebsd-to-rtems.py | 4 +- freebsd/kern/kern_intr.c | 87 ++- freebsd/kern/kern_timeout.c | 927 +++++++++++++++++++++++++++ freebsd/sys/callout.h | 11 - freebsd/sys/mutex.h | 5 + freebsd/sys/sleepqueue.h | 1 + rtemsbsd/freebsd/machine/rtems-bsd-symbols.h | 5 - rtemsbsd/src/rtems-bsd-callout.c | 140 ---- rtemsbsd/src/rtems-bsd-shell.c | 21 - rtemsbsd/src/rtems-bsd-timeout.c | 129 ---- testsuite/swi01/Makefile | 29 + testsuite/swi01/init.c | 76 +++ testsuite/swi01/swi_test.c | 208 ++++++ testsuite/swi01/swi_test.h | 45 ++ testsuite/timeout01/Makefile | 29 + testsuite/timeout01/init.c | 81 +++ testsuite/timeout01/timeout_helper.c | 142 ++++ testsuite/timeout01/timeout_helper.h | 46 ++ testsuite/timeout01/timeout_test.c | 282 ++++++++ testsuite/timeout01/timeout_test.h | 45 ++ 21 files changed, 1994 insertions(+), 322 deletions(-) create mode 100644 freebsd/kern/kern_timeout.c create mode 100644 freebsd/sys/sleepqueue.h delete mode 100644 rtemsbsd/src/rtems-bsd-callout.c delete mode 100644 rtemsbsd/src/rtems-bsd-timeout.c create mode 100644 testsuite/swi01/Makefile create mode 100644 testsuite/swi01/init.c create mode 100644 testsuite/swi01/swi_test.c create mode 100644 testsuite/swi01/swi_test.h create mode 100644 testsuite/timeout01/Makefile create mode 100644 testsuite/timeout01/init.c create mode 100644 testsuite/timeout01/timeout_helper.c create mode 100644 testsuite/timeout01/timeout_helper.h create mode 100644 testsuite/timeout01/timeout_test.c create mode 100644 testsuite/timeout01/timeout_test.h diff --git a/Makefile b/Makefile index 53385923..f93e38ba 100644 --- a/Makefile +++ b/Makefile @@ -36,7 +36,6 @@ C_FILES += rtemsbsd/src/rtems-bsd-generic.c C_FILES += rtemsbsd/src/rtems-bsd-panic.c C_FILES += rtemsbsd/src/rtems-bsd-synch.c C_FILES += rtemsbsd/src/rtems-bsd-signal.c -C_FILES += rtemsbsd/src/rtems-bsd-callout.c C_FILES += rtemsbsd/src/rtems-bsd-init.c C_FILES += rtemsbsd/src/rtems-bsd-init-with-irq.c C_FILES += rtemsbsd/src/rtems-bsd-assert.c @@ -52,7 +51,6 @@ C_FILES += rtemsbsd/src/rtems-bsd-sysctl.c C_FILES += rtemsbsd/src/rtems-bsd-sysctlbyname.c C_FILES += rtemsbsd/src/rtems-bsd-sysctlnametomib.c C_FILES += rtemsbsd/src/rtems-bsd-taskqueue.c -C_FILES += rtemsbsd/src/rtems-bsd-timeout.c C_FILES += rtemsbsd/src/rtems-bsd-timesupport.c C_FILES += rtemsbsd/src/rtems-bsd-newproc.c C_FILES += rtemsbsd/src/rtems-bsd-vm_glue.c @@ -322,6 +320,7 @@ C_FILES += freebsd/local/pcib_if.c C_FILES += freebsd/kern/init_main.c C_FILES += freebsd/kern/kern_linker.c C_FILES += freebsd/kern/kern_mib.c +C_FILES += freebsd/kern/kern_timeout.c C_FILES += freebsd/kern/kern_mbuf.c C_FILES += freebsd/kern/kern_module.c C_FILES += freebsd/kern/kern_sysctl.c diff --git a/freebsd-to-rtems.py b/freebsd-to-rtems.py index 43597b47..ef31a87e 100755 --- a/freebsd-to-rtems.py +++ b/freebsd-to-rtems.py @@ -529,7 +529,6 @@ rtems.addRTEMSSourceFiles( 'src/rtems-bsd-panic.c', 'src/rtems-bsd-synch.c', 'src/rtems-bsd-signal.c', - 'src/rtems-bsd-callout.c', 'src/rtems-bsd-init.c', 'src/rtems-bsd-init-with-irq.c', 'src/rtems-bsd-assert.c', @@ -547,7 +546,6 @@ rtems.addRTEMSSourceFiles( 'src/rtems-bsd-sysctlbyname.c', 'src/rtems-bsd-sysctlnametomib.c', 'src/rtems-bsd-taskqueue.c', - 'src/rtems-bsd-timeout.c', 'src/rtems-bsd-timesupport.c', 'src/rtems-bsd-newproc.c', 'src/rtems-bsd-vm_glue.c', @@ -575,6 +573,7 @@ rtems.addEmptyHeaderFiles( 'sys/exec.h', 'sys/fail.h', 'sys/limits.h', + 'sys/sleepqueue.h', 'sys/namei.h', 'sys/_pthreadtypes.h', #'sys/resourcevar.h', @@ -1119,6 +1118,7 @@ devUsbBase.addSourceFiles( 'kern/init_main.c', 'kern/kern_linker.c', 'kern/kern_mib.c', + 'kern/kern_timeout.c', 'kern/kern_mbuf.c', 'kern/kern_module.c', 'kern/kern_sysctl.c', diff --git a/freebsd/kern/kern_intr.c b/freebsd/kern/kern_intr.c index f93a72c6..982d5e82 100644 --- a/freebsd/kern/kern_intr.c +++ b/freebsd/kern/kern_intr.c @@ -55,19 +55,22 @@ __FBSDID("$FreeBSD$"); #include #include #include -#ifndef __rtems__ #include -#endif /* __rtems__ */ #include #include #ifndef __rtems__ #include #include +#else /* __rtems__ */ + #ifdef INTR_FILTER + #error INTR_FILTER is currently not suppported with RTEMS + #endif + #define RTEMSBSD_SWI_WAKEUP_EVENT RTEMS_EVENT_31 +#endif /* __rtems__ */ #ifdef DDB #include #include #endif -#endif /* __rtems__ */ /* * Describe an interrupt thread. There is one of these per interrupt event. @@ -88,24 +91,27 @@ struct intr_entropy { }; struct intr_event *clk_intr_event; +#ifndef __rtems__ struct intr_event *tty_intr_event; void *vm_ih; +#endif /* __rtems__ */ struct proc *intrproc; static MALLOC_DEFINE(M_ITHREAD, "ithread", "Interrupt Threads"); static int intr_storm_threshold = 1000; +#ifndef __rtems__ TUNABLE_INT("hw.intr_storm_threshold", &intr_storm_threshold); SYSCTL_INT(_hw, OID_AUTO, intr_storm_threshold, CTLFLAG_RW, &intr_storm_threshold, 0, "Number of consecutive interrupts before storm protection is enabled"); +#endif /* __rtems__ */ static TAILQ_HEAD(, intr_event) event_list = TAILQ_HEAD_INITIALIZER(event_list); static struct mtx event_lock; MTX_SYSINIT(intr_event_list, &event_lock, "intr event list", MTX_DEF); static void intr_event_update(struct intr_event *ie); -#ifndef __rtems__ #ifdef INTR_FILTER static int intr_event_schedule_thread(struct intr_event *ie, struct intr_thread *ithd); @@ -117,7 +123,9 @@ static struct intr_thread *ithread_create(const char *name, static int intr_event_schedule_thread(struct intr_event *ie); static struct intr_thread *ithread_create(const char *name); #endif +#ifndef __rtems__ static void ithread_destroy(struct intr_thread *ithread); +#endif /* __rtems__ */ static void ithread_execute_handlers(struct proc *p, struct intr_event *ie); #ifdef INTR_FILTER @@ -125,7 +133,6 @@ static void priv_ithread_execute_handler(struct proc *p, struct intr_handler *ih); #endif static void ithread_loop(void *); -#endif /* __rtems__ */ static void ithread_update(struct intr_thread *ithd); #ifndef __rtems__ static void start_softintr(void *); @@ -172,6 +179,7 @@ intr_priority(enum intr_type flags) return pri; } +#endif /* __rtems__ */ /* * Update an ithread based on the associated intr_event. */ @@ -194,10 +202,13 @@ ithread_update(struct intr_thread *ithd) /* Update name and priority. */ strlcpy(td->td_name, ie->ie_fullname, sizeof(td->td_name)); thread_lock(td); +#ifndef __rtems__ sched_prio(td, pri); +#else /* __rtems__ */ +#warning TODO: set thread priority +#endif /* __rtems__ */ thread_unlock(td); } -#endif /* __rtems__ */ /* * Regenerate the full name of an interrupt event and update its priority. @@ -257,7 +268,6 @@ intr_event_update(struct intr_event *ie) ithread_update(ie->ie_thread); CTR2(KTR_INTR, "%s: updated %s", __func__, ie->ie_fullname); } -#ifndef __rtems__ int intr_event_create(struct intr_event **event, void *source, int flags, int irq, @@ -296,6 +306,7 @@ intr_event_create(struct intr_event **event, void *source, int flags, int irq, return (0); } +#ifndef __rtems__ /* * Bind an interrupt event to the specified CPU. Note that not all * platforms support binding an interrupt to a CPU. For those @@ -453,6 +464,7 @@ intr_event_destroy(struct intr_event *ie) return (0); } +#endif /* __rtems__ */ #ifndef INTR_FILTER static struct intr_thread * ithread_create(const char *name) @@ -469,15 +481,20 @@ ithread_create(const char *name) if (error) panic("kproc_create() failed with %d", error); thread_lock(td); +#ifndef __rtems__ sched_class(td, PRI_ITHD); TD_SET_IWAIT(td); +#endif /* __rtems__ */ thread_unlock(td); +#ifndef __rtems__ td->td_pflags |= TDP_ITHREAD; +#endif /* __rtems__ */ ithd->it_thread = td; CTR2(KTR_INTR, "%s: created %s", __func__, name); return (ithd); } #else +#ifndef __rtems__ static struct intr_thread * ithread_create(const char *name, struct intr_handler *ih) { @@ -501,7 +518,9 @@ ithread_create(const char *name, struct intr_handler *ih) CTR2(KTR_INTR, "%s: created %s", __func__, name); return (ithd); } +#endif /* __rtems__ */ #endif +#ifndef __rtems__ static void ithread_destroy(struct intr_thread *ithread) @@ -518,8 +537,8 @@ ithread_destroy(struct intr_thread *ithread) } thread_unlock(td); } -#endif /* __rtems__ */ +#endif /* __rtems__ */ #ifndef INTR_FILTER int intr_event_add_handler(struct intr_event *ie, const char *name, @@ -594,6 +613,7 @@ intr_event_add_handler(struct intr_event *ie, const char *name, return (0); } #else +#ifndef __rtems__ int intr_event_add_handler(struct intr_event *ie, const char *name, driver_filter_t filter, driver_intr_t handler, void *arg, u_char pri, @@ -675,6 +695,7 @@ intr_event_add_handler(struct intr_event *ie, const char *name, *cookiep = ih; return (0); } +#endif /* __rtems__ */ #endif #ifndef __rtems__ @@ -753,7 +774,9 @@ intr_handler_source(void *cookie) return (ie->ie_source); } +#endif /* __rtems__ */ #ifndef INTR_FILTER +#ifndef __rtems__ int intr_event_remove_handler(void *cookie) { @@ -843,6 +866,7 @@ ok: return (0); } +#endif /* __rtems__ */ static int intr_event_schedule_thread(struct intr_event *ie) { @@ -886,6 +910,7 @@ intr_event_schedule_thread(struct intr_event *ie) */ it->it_need = 1; thread_lock(td); +#ifndef __rtems__ if (TD_AWAITING_INTR(td)) { CTR3(KTR_INTR, "%s: schedule pid %d (%s)", __func__, p->p_pid, td->td_name); @@ -895,11 +920,19 @@ intr_event_schedule_thread(struct intr_event *ie) CTR5(KTR_INTR, "%s: pid %d (%s): it_need %d, state %d", __func__, p->p_pid, td->td_name, it->it_need, td->td_state); } +#else /* __rtems__ */ + /* Send event to wake the thread up. + * TODO: eventually replace event by a better mechanism + */ + rtems_status_code sc = rtems_event_send(td->td_id, RTEMSBSD_SWI_WAKEUP_EVENT); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); +#endif /* __rtems__ */ thread_unlock(td); return (0); } #else +#ifndef __rtems__ int intr_event_remove_handler(void *cookie) { @@ -1053,8 +1086,8 @@ intr_event_schedule_thread(struct intr_event *ie, struct intr_thread *it) return (0); } -#endif #endif /* __rtems__ */ +#endif /* * Allow interrupt event binding for software interrupt handlers -- a no-op, @@ -1099,19 +1132,20 @@ swi_add(struct intr_event **eventp, const char *name, driver_intr_t handler, (pri * RQ_PPQ) + PI_SOFT, flags, cookiep); if (error) return (error); +#ifndef __rtems__ if (pri == SWI_CLOCK) { struct proc *p; p = ie->ie_thread->it_thread->td_proc; PROC_LOCK(p); -#ifndef __rtems__ p->p_flag |= P_NOLOAD; -#endif /* __rtems__ */ PROC_UNLOCK(p); } +#else /* __rtems__ */ + // Do _not_ ignore the thread in the load avarage +#endif /* __rtems__ */ return (0); } -#ifndef __rtems__ /* * Schedule a software interrupt thread. */ @@ -1133,7 +1167,9 @@ swi_sched(void *cookie, int flags) atomic_store_rel_int(&ih->ih_need, 1); if (!(flags & SWI_DELAY)) { +#ifndef __rtems__ PCPU_INC(cnt.v_soft); +#endif /* __rtems__ */ #ifdef INTR_FILTER error = intr_event_schedule_thread(ie, ie->ie_thread); #else @@ -1143,6 +1179,7 @@ swi_sched(void *cookie, int flags) } } +#ifndef __rtems__ /* * Remove a software interrupt handler. Currently this code does not * remove the associated interrupt event if it becomes empty. Calling code @@ -1189,6 +1226,7 @@ priv_ithread_execute_handler(struct proc *p, struct intr_handler *ih) } #endif +#endif /* __rtems__ */ /* * This is a public function for use by drivers that mux interrupt * handlers for child devices from their interrupt handler. @@ -1245,12 +1283,17 @@ static void ithread_execute_handlers(struct proc *p, struct intr_event *ie) { +#ifndef __rtems__ /* Interrupt handlers should not sleep. */ if (!(ie->ie_flags & IE_SOFT)) THREAD_NO_SLEEPING(); intr_event_execute_handlers(p, ie); if (!(ie->ie_flags & IE_SOFT)) THREAD_SLEEPING_OK(); +#else /* __rtems__ */ + /* We only have soft-threads, so the two queries are not necessary. */ + intr_event_execute_handlers(p, ie); +#endif /* __rtems__ */ /* * Interrupt storm handling: @@ -1264,12 +1307,14 @@ ithread_execute_handlers(struct proc *p, struct intr_event *ie) */ if (intr_storm_threshold != 0 && ie->ie_count >= intr_storm_threshold && !(ie->ie_flags & IE_SOFT)) { +#ifndef __rtems__ /* Report the message only once every second. */ if (ppsratecheck(&ie->ie_warntm, &ie->ie_warncnt, 1)) { printf( "interrupt storm detected on \"%s\"; throttling interrupt source\n", ie->ie_name); } +#endif /* __rtems__ */ pause("istorm", 1); } else ie->ie_count++; @@ -1342,13 +1387,27 @@ ithread_loop(void *arg) */ thread_lock(td); if (!ithd->it_need && !(ithd->it_flags & IT_DEAD)) { +#ifndef __rtems__ TD_SET_IWAIT(td); ie->ie_count = 0; mi_switch(SW_VOL | SWT_IWAIT, NULL); +#else /* __rtems__ */ + /* wait for wakeup event + * TODO: eventually replace event by a better mechanism + */ + rtems_event_set event_out; + rtems_status_code sc = rtems_event_receive( + RTEMSBSD_SWI_WAKEUP_EVENT, + RTEMS_WAIT | RTEMS_EVENT_ALL, + RTEMS_NO_TIMEOUT, + &event_out); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); +#endif /* __rtems__ */ } thread_unlock(td); } } +#ifndef __rtems__ /* * Main interrupt handling body. @@ -1444,7 +1503,9 @@ intr_event_handle(struct intr_event *ie, struct trapframe *frame) td->td_intr_nesting_level--; return (0); } +#endif /* __rtems__ */ #else +#ifndef __rtems__ /* * This is the main code for interrupt threads. */ @@ -1647,7 +1708,9 @@ intr_event_handle(struct intr_event *ie, struct trapframe *frame) td->td_intr_nesting_level--; return (0); } +#endif /* __rtems__ */ #endif +#ifndef __rtems__ #ifdef DDB /* diff --git a/freebsd/kern/kern_timeout.c b/freebsd/kern/kern_timeout.c new file mode 100644 index 00000000..536ca3f3 --- /dev/null +++ b/freebsd/kern/kern_timeout.c @@ -0,0 +1,927 @@ +#include + +/*- + * Copyright (c) 1982, 1986, 1991, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * From: @(#)kern_clock.c 8.5 (Berkeley) 1/21/94 + */ + +#include +__FBSDID("$FreeBSD$"); + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef __rtems__ +int ncallout = 16; +#endif /* __rtems__ */ +SDT_PROVIDER_DEFINE(callout_execute); +SDT_PROBE_DEFINE(callout_execute, kernel, , callout_start); +SDT_PROBE_ARGTYPE(callout_execute, kernel, , callout_start, 0, + "struct callout *"); +SDT_PROBE_DEFINE(callout_execute, kernel, , callout_end); +SDT_PROBE_ARGTYPE(callout_execute, kernel, , callout_end, 0, + "struct callout *"); + +static int avg_depth; +SYSCTL_INT(_debug, OID_AUTO, to_avg_depth, CTLFLAG_RD, &avg_depth, 0, + "Average number of items examined per softclock call. Units = 1/1000"); +static int avg_gcalls; +SYSCTL_INT(_debug, OID_AUTO, to_avg_gcalls, CTLFLAG_RD, &avg_gcalls, 0, + "Average number of Giant callouts made per softclock call. Units = 1/1000"); +static int avg_lockcalls; +SYSCTL_INT(_debug, OID_AUTO, to_avg_lockcalls, CTLFLAG_RD, &avg_lockcalls, 0, + "Average number of lock callouts made per softclock call. Units = 1/1000"); +static int avg_mpcalls; +SYSCTL_INT(_debug, OID_AUTO, to_avg_mpcalls, CTLFLAG_RD, &avg_mpcalls, 0, + "Average number of MP callouts made per softclock call. Units = 1/1000"); +/* + * TODO: + * allocate more timeout table slots when table overflows. + */ +int callwheelsize, callwheelbits, callwheelmask; + +/* + * There is one struct callout_cpu per cpu, holding all relevant + * state for the callout processing thread on the individual CPU. + * In particular: + * cc_ticks is incremented once per tick in callout_cpu(). + * It tracks the global 'ticks' but in a way that the individual + * threads should not worry about races in the order in which + * hardclock() and hardclock_cpu() run on the various CPUs. + * cc_softclock is advanced in callout_cpu() to point to the + * first entry in cc_callwheel that may need handling. In turn, + * a softclock() is scheduled so it can serve the various entries i + * such that cc_softclock <= i <= cc_ticks . + * XXX maybe cc_softclock and cc_ticks should be volatile ? + * + * cc_ticks is also used in callout_reset_cpu() to determine + * when the callout should be served. + */ +struct callout_cpu { + struct mtx cc_lock; + struct callout *cc_callout; + struct callout_tailq *cc_callwheel; + struct callout_list cc_callfree; + struct callout *cc_next; + struct callout *cc_curr; + void *cc_cookie; + int cc_ticks; + int cc_softticks; + int cc_cancel; + int cc_waiting; +}; + +#ifdef SMP +struct callout_cpu cc_cpu[MAXCPU]; +#define CC_CPU(cpu) (&cc_cpu[(cpu)]) +#define CC_SELF() CC_CPU(PCPU_GET(cpuid)) +#else +struct callout_cpu cc_cpu; +#define CC_CPU(cpu) &cc_cpu +#define CC_SELF() &cc_cpu +#endif +#define CC_LOCK(cc) mtx_lock_spin(&(cc)->cc_lock) +#define CC_UNLOCK(cc) mtx_unlock_spin(&(cc)->cc_lock) + +static int timeout_cpu; + +MALLOC_DEFINE(M_CALLOUT, "callout", "Callout datastructures"); + +/** + * Locked by cc_lock: + * cc_curr - If a callout is in progress, it is curr_callout. + * If curr_callout is non-NULL, threads waiting in + * callout_drain() will be woken up as soon as the + * relevant callout completes. + * cc_cancel - Changing to 1 with both callout_lock and c_lock held + * guarantees that the current callout will not run. + * The softclock() function sets this to 0 before it + * drops callout_lock to acquire c_lock, and it calls + * the handler only if curr_cancelled is still 0 after + * c_lock is successfully acquired. + * cc_waiting - If a thread is waiting in callout_drain(), then + * callout_wait is nonzero. Set only when + * curr_callout is non-NULL. + */ + +/* + * kern_timeout_callwheel_alloc() - kernel low level callwheel initialization + * + * This code is called very early in the kernel initialization sequence, + * and may be called more then once. + */ +caddr_t +kern_timeout_callwheel_alloc(caddr_t v) +{ + struct callout_cpu *cc; + + timeout_cpu = PCPU_GET(cpuid); + cc = CC_CPU(timeout_cpu); + /* + * Calculate callout wheel size + */ + for (callwheelsize = 1, callwheelbits = 0; + callwheelsize < ncallout; + callwheelsize <<= 1, ++callwheelbits) + ; + callwheelmask = callwheelsize - 1; + + cc->cc_callout = (struct callout *)v; + v = (caddr_t)(cc->cc_callout + ncallout); + cc->cc_callwheel = (struct callout_tailq *)v; + v = (caddr_t)(cc->cc_callwheel + callwheelsize); + return(v); +} + +static void +callout_cpu_init(struct callout_cpu *cc) +{ + struct callout *c; + int i; + + mtx_init(&cc->cc_lock, "callout", NULL, MTX_SPIN | MTX_RECURSE); + SLIST_INIT(&cc->cc_callfree); + for (i = 0; i < callwheelsize; i++) { + TAILQ_INIT(&cc->cc_callwheel[i]); + } + if (cc->cc_callout == NULL) + return; + for (i = 0; i < ncallout; i++) { + c = &cc->cc_callout[i]; + callout_init(c, 0); + c->c_flags = CALLOUT_LOCAL_ALLOC; + SLIST_INSERT_HEAD(&cc->cc_callfree, c, c_links.sle); + } +} + +/* + * kern_timeout_callwheel_init() - initialize previously reserved callwheel + * space. + * + * This code is called just once, after the space reserved for the + * callout wheel has been finalized. + */ +void +kern_timeout_callwheel_init(void) +{ + callout_cpu_init(CC_CPU(timeout_cpu)); +} + +/* + * Start standard softclock thread. + */ +void *softclock_ih; + +static void +start_softclock(void *dummy) +{ + struct callout_cpu *cc; +#ifdef SMP + int cpu; +#endif + + cc = CC_CPU(timeout_cpu); + if (swi_add(&clk_intr_event, "clock", softclock, cc, SWI_CLOCK, + INTR_MPSAFE, &softclock_ih)) + panic("died while creating standard software ithreads"); + cc->cc_cookie = softclock_ih; +#ifdef SMP + for (cpu = 0; cpu <= mp_maxid; cpu++) { + if (cpu == timeout_cpu) + continue; + if (CPU_ABSENT(cpu)) + continue; + cc = CC_CPU(cpu); + if (swi_add(NULL, "clock", softclock, cc, SWI_CLOCK, + INTR_MPSAFE, &cc->cc_cookie)) + panic("died while creating standard software ithreads"); + cc->cc_callout = NULL; /* Only cpu0 handles timeout(). */ + cc->cc_callwheel = malloc( + sizeof(struct callout_tailq) * callwheelsize, M_CALLOUT, + M_WAITOK); + callout_cpu_init(cc); + } +#endif +} + +SYSINIT(start_softclock, SI_SUB_SOFTINTR, SI_ORDER_FIRST, start_softclock, NULL); + +void +callout_tick(void) +{ + struct callout_cpu *cc; + int need_softclock; + int bucket; + + /* + * Process callouts at a very low cpu priority, so we don't keep the + * relatively high clock interrupt priority any longer than necessary. + */ + need_softclock = 0; + cc = CC_SELF(); + mtx_lock_spin_flags(&cc->cc_lock, MTX_QUIET); + cc->cc_ticks++; + for (; (cc->cc_softticks - cc->cc_ticks) <= 0; cc->cc_softticks++) { + bucket = cc->cc_softticks & callwheelmask; + if (!TAILQ_EMPTY(&cc->cc_callwheel[bucket])) { + need_softclock = 1; + break; + } + } + mtx_unlock_spin_flags(&cc->cc_lock, MTX_QUIET); + /* + * swi_sched acquires the thread lock, so we don't want to call it + * with cc_lock held; incorrect locking order. + */ + if (need_softclock) + swi_sched(cc->cc_cookie, 0); +} + +static struct callout_cpu * +callout_lock(struct callout *c) +{ + struct callout_cpu *cc; + int cpu; + + for (;;) { + cpu = c->c_cpu; + cc = CC_CPU(cpu); + CC_LOCK(cc); + if (cpu == c->c_cpu) + break; + CC_UNLOCK(cc); + } + return (cc); +} + +/* + * The callout mechanism is based on the work of Adam M. Costello and + * George Varghese, published in a technical report entitled "Redesigning + * the BSD Callout and Timer Facilities" and modified slightly for inclusion + * in FreeBSD by Justin T. Gibbs. The original work on the data structures + * used in this implementation was published by G. Varghese and T. Lauck in + * the paper "Hashed and Hierarchical Timing Wheels: Data Structures for + * the Efficient Implementation of a Timer Facility" in the Proceedings of + * the 11th ACM Annual Symposium on Operating Systems Principles, + * Austin, Texas Nov 1987. + */ + +/* + * Software (low priority) clock interrupt. + * Run periodic events from timeout queue. + */ +void +softclock(void *arg) +{ + struct callout_cpu *cc; + struct callout *c; + struct callout_tailq *bucket; + int curticks; + int steps; /* #steps since we last allowed interrupts */ + int depth; + int mpcalls; + int lockcalls; + int gcalls; +#ifdef DIAGNOSTIC + struct bintime bt1, bt2; + struct timespec ts2; + static uint64_t maxdt = 36893488147419102LL; /* 2 msec */ + static timeout_t *lastfunc; +#endif + +#ifndef MAX_SOFTCLOCK_STEPS +#define MAX_SOFTCLOCK_STEPS 100 /* Maximum allowed value of steps. */ +#endif /* MAX_SOFTCLOCK_STEPS */ + + mpcalls = 0; + lockcalls = 0; + gcalls = 0; + depth = 0; + steps = 0; + cc = (struct callout_cpu *)arg; + CC_LOCK(cc); + while (cc->cc_softticks - 1 != cc->cc_ticks) { + /* + * cc_softticks may be modified by hard clock, so cache + * it while we work on a given bucket. + */ + curticks = cc->cc_softticks; + cc->cc_softticks++; + bucket = &cc->cc_callwheel[curticks & callwheelmask]; + c = TAILQ_FIRST(bucket); + while (c) { + depth++; + if (c->c_time != curticks) { + c = TAILQ_NEXT(c, c_links.tqe); + ++steps; + if (steps >= MAX_SOFTCLOCK_STEPS) { + cc->cc_next = c; + /* Give interrupts a chance. */ + CC_UNLOCK(cc); + ; /* nothing */ + CC_LOCK(cc); + c = cc->cc_next; + steps = 0; + } + } else { + void (*c_func)(void *); + void *c_arg; + struct lock_class *class; + struct lock_object *c_lock; + int c_flags, sharedlock; + + cc->cc_next = TAILQ_NEXT(c, c_links.tqe); + TAILQ_REMOVE(bucket, c, c_links.tqe); + class = (c->c_lock != NULL) ? + LOCK_CLASS(c->c_lock) : NULL; + sharedlock = (c->c_flags & CALLOUT_SHAREDLOCK) ? + 0 : 1; + c_lock = c->c_lock; + c_func = c->c_func; + c_arg = c->c_arg; + c_flags = c->c_flags; + if (c->c_flags & CALLOUT_LOCAL_ALLOC) { + c->c_flags = CALLOUT_LOCAL_ALLOC; + } else { + c->c_flags = + (c->c_flags & ~CALLOUT_PENDING); + } + cc->cc_curr = c; + cc->cc_cancel = 0; + CC_UNLOCK(cc); + if (c_lock != NULL) { + class->lc_lock(c_lock, sharedlock); + /* + * The callout may have been cancelled + * while we switched locks. + */ + if (cc->cc_cancel) { + class->lc_unlock(c_lock); + goto skip; + } + /* The callout cannot be stopped now. */ + cc->cc_cancel = 1; + + if (c_lock == &Giant.lock_object) { + gcalls++; + CTR3(KTR_CALLOUT, + "callout %p func %p arg %p", + c, c_func, c_arg); + } else { + lockcalls++; + CTR3(KTR_CALLOUT, "callout lock" + " %p func %p arg %p", + c, c_func, c_arg); + } + } else { + mpcalls++; + CTR3(KTR_CALLOUT, + "callout mpsafe %p func %p arg %p", + c, c_func, c_arg); + } +#ifdef DIAGNOSTIC + binuptime(&bt1); +#endif +#ifndef __rtems__ + THREAD_NO_SLEEPING(); + SDT_PROBE(callout_execute, kernel, , + callout_start, c, 0, 0, 0, 0); +#endif /* __rtems__ */ + c_func(c_arg); +#ifndef __rtems__ + SDT_PROBE(callout_execute, kernel, , + callout_end, c, 0, 0, 0, 0); + THREAD_SLEEPING_OK(); +#endif /* __rtems__ */ +#ifdef DIAGNOSTIC + binuptime(&bt2); + bintime_sub(&bt2, &bt1); + if (bt2.frac > maxdt) { + if (lastfunc != c_func || + bt2.frac > maxdt * 2) { + bintime2timespec(&bt2, &ts2); + printf( + "Expensive timeout(9) function: %p(%p) %jd.%09ld s\n", + c_func, c_arg, + (intmax_t)ts2.tv_sec, + ts2.tv_nsec); + } + maxdt = bt2.frac; + lastfunc = c_func; + } +#endif + CTR1(KTR_CALLOUT, "callout %p finished", c); + if ((c_flags & CALLOUT_RETURNUNLOCKED) == 0) + class->lc_unlock(c_lock); + skip: + CC_LOCK(cc); + /* + * If the current callout is locally + * allocated (from timeout(9)) + * then put it on the freelist. + * + * Note: we need to check the cached + * copy of c_flags because if it was not + * local, then it's not safe to deref the + * callout pointer. + */ + if (c_flags & CALLOUT_LOCAL_ALLOC) { + KASSERT(c->c_flags == + CALLOUT_LOCAL_ALLOC, + ("corrupted callout")); + c->c_func = NULL; + SLIST_INSERT_HEAD(&cc->cc_callfree, c, + c_links.sle); + } + cc->cc_curr = NULL; + if (cc->cc_waiting) { + /* + * There is someone waiting + * for the callout to complete. + */ + cc->cc_waiting = 0; + CC_UNLOCK(cc); + wakeup(&cc->cc_waiting); + CC_LOCK(cc); + } + steps = 0; + c = cc->cc_next; + } + } + } + avg_depth += (depth * 1000 - avg_depth) >> 8; + avg_mpcalls += (mpcalls * 1000 - avg_mpcalls) >> 8; + avg_lockcalls += (lockcalls * 1000 - avg_lockcalls) >> 8; + avg_gcalls += (gcalls * 1000 - avg_gcalls) >> 8; + cc->cc_next = NULL; + CC_UNLOCK(cc); +} + +/* + * timeout -- + * Execute a function after a specified length of time. + * + * untimeout -- + * Cancel previous timeout function call. + * + * callout_handle_init -- + * Initialize a handle so that using it with untimeout is benign. + * + * See AT&T BCI Driver Reference Manual for specification. This + * implementation differs from that one in that although an + * identification value is returned from timeout, the original + * arguments to timeout as well as the identifier are used to + * identify entries for untimeout. + */ +struct callout_handle +timeout(ftn, arg, to_ticks) + timeout_t *ftn; + void *arg; + int to_ticks; +{ + struct callout_cpu *cc; + struct callout *new; + struct callout_handle handle; + + cc = CC_CPU(timeout_cpu); + CC_LOCK(cc); + /* Fill in the next free callout structure. */ + new = SLIST_FIRST(&cc->cc_callfree); + if (new == NULL) + /* XXX Attempt to malloc first */ + panic("timeout table full"); + SLIST_REMOVE_HEAD(&cc->cc_callfree, c_links.sle); + callout_reset(new, to_ticks, ftn, arg); + handle.callout = new; + CC_UNLOCK(cc); + + return (handle); +} + +void +untimeout(ftn, arg, handle) + timeout_t *ftn; + void *arg; + struct callout_handle handle; +{ + struct callout_cpu *cc; + + /* + * Check for a handle that was initialized + * by callout_handle_init, but never used + * for a real timeout. + */ + if (handle.callout == NULL) + return; + + cc = callout_lock(handle.callout); + if (handle.callout->c_func == ftn && handle.callout->c_arg == arg) + callout_stop(handle.callout); + CC_UNLOCK(cc); +} + +void +callout_handle_init(struct callout_handle *handle) +{ + handle->callout = NULL; +} + +/* + * New interface; clients allocate their own callout structures. + * + * callout_reset() - establish or change a timeout + * callout_stop() - disestablish a timeout + * callout_init() - initialize a callout structure so that it can + * safely be passed to callout_reset() and callout_stop() + * + * defines three convenience macros: + * + * callout_active() - returns truth if callout has not been stopped, + * drained, or deactivated since the last time the callout was + * reset. + * callout_pending() - returns truth if callout is still waiting for timeout + * callout_deactivate() - marks the callout as having been serviced + */ +int +callout_reset_on(struct callout *c, int to_ticks, void (*ftn)(void *), + void *arg, int cpu) +{ + struct callout_cpu *cc; + int cancelled = 0; + + /* + * Don't allow migration of pre-allocated callouts lest they + * become unbalanced. + */ + if (c->c_flags & CALLOUT_LOCAL_ALLOC) + cpu = c->c_cpu; +retry: + cc = callout_lock(c); + if (cc->cc_curr == c) { + /* + * We're being asked to reschedule a callout which is + * currently in progress. If there is a lock then we + * can cancel the callout if it has not really started. + */ + if (c->c_lock != NULL && !cc->cc_cancel) + cancelled = cc->cc_cancel = 1; + if (cc->cc_waiting) { + /* + * Someone has called callout_drain to kill this + * callout. Don't reschedule. + */ + CTR4(KTR_CALLOUT, "%s %p func %p arg %p", + cancelled ? "cancelled" : "failed to cancel", + c, c->c_func, c->c_arg); + CC_UNLOCK(cc); + return (cancelled); + } + } + if (c->c_flags & CALLOUT_PENDING) { + if (cc->cc_next == c) { + cc->cc_next = TAILQ_NEXT(c, c_links.tqe); + } + TAILQ_REMOVE(&cc->cc_callwheel[c->c_time & callwheelmask], c, + c_links.tqe); + + cancelled = 1; + c->c_flags &= ~(CALLOUT_ACTIVE | CALLOUT_PENDING); + } + /* + * If the lock must migrate we have to check the state again as + * we can't hold both the new and old locks simultaneously. + */ + if (c->c_cpu != cpu) { + c->c_cpu = cpu; + CC_UNLOCK(cc); + goto retry; + } + + if (to_ticks <= 0) + to_ticks = 1; + + c->c_arg = arg; + c->c_flags |= (CALLOUT_ACTIVE | CALLOUT_PENDING); + c->c_func = ftn; + c->c_time = cc->cc_ticks + to_ticks; + TAILQ_INSERT_TAIL(&cc->cc_callwheel[c->c_time & callwheelmask], + c, c_links.tqe); + CTR5(KTR_CALLOUT, "%sscheduled %p func %p arg %p in %d", + cancelled ? "re" : "", c, c->c_func, c->c_arg, to_ticks); + CC_UNLOCK(cc); + + return (cancelled); +} + +/* + * Common idioms that can be optimized in the future. + */ +int +callout_schedule_on(struct callout *c, int to_ticks, int cpu) +{ + return callout_reset_on(c, to_ticks, c->c_func, c->c_arg, cpu); +} + +int +callout_schedule(struct callout *c, int to_ticks) +{ + return callout_reset_on(c, to_ticks, c->c_func, c->c_arg, c->c_cpu); +} + +int +_callout_stop_safe(c, safe) + struct callout *c; + int safe; +{ + struct callout_cpu *cc; + struct lock_class *class; +#ifndef __rtems__ + int use_lock, sq_locked; +#else /* __rtems__ */ + int use_lock; +#endif /* __rtems__ */ + + /* + * Some old subsystems don't hold Giant while running a callout_stop(), + * so just discard this check for the moment. + */ + if (!safe && c->c_lock != NULL) { + if (c->c_lock == &Giant.lock_object) + use_lock = mtx_owned(&Giant); + else { + use_lock = 1; + class = LOCK_CLASS(c->c_lock); + class->lc_assert(c->c_lock, LA_XLOCKED); + } + } else + use_lock = 0; + +#ifndef __rtems__ + sq_locked = 0; +again: +#endif /* __rtems__ */ + cc = callout_lock(c); + /* + * If the callout isn't pending, it's not on the queue, so + * don't attempt to remove it from the queue. We can try to + * stop it by other means however. + */ + if (!(c->c_flags & CALLOUT_PENDING)) { + c->c_flags &= ~CALLOUT_ACTIVE; + + /* + * If it wasn't on the queue and it isn't the current + * callout, then we can't stop it, so just bail. + */ + if (cc->cc_curr != c) { + CTR3(KTR_CALLOUT, "failed to stop %p func %p arg %p", + c, c->c_func, c->c_arg); + CC_UNLOCK(cc); +#ifndef __rtems__ + if (sq_locked) + sleepq_release(&cc->cc_waiting); +#endif /* __rtems__ */ + return (0); + } + + if (safe) { + /* + * The current callout is running (or just + * about to run) and blocking is allowed, so + * just wait for the current invocation to + * finish. + */ + while (cc->cc_curr == c) { +#ifndef __rtems__ + + /* + * Use direct calls to sleepqueue interface + * instead of cv/msleep in order to avoid + * a LOR between cc_lock and sleepqueue + * chain spinlocks. This piece of code + * emulates a msleep_spin() call actually. + * + * If we already have the sleepqueue chain + * locked, then we can safely block. If we + * don't already have it locked, however, + * we have to drop the cc_lock to lock + * it. This opens several races, so we + * restart at the beginning once we have + * both locks. If nothing has changed, then + * we will end up back here with sq_locked + * set. + */ + if (!sq_locked) { + CC_UNLOCK(cc); + sleepq_lock(&cc->cc_waiting); + sq_locked = 1; + goto again; + } + cc->cc_waiting = 1; + DROP_GIANT(); + CC_UNLOCK(cc); + sleepq_add(&cc->cc_waiting, + &cc->cc_lock.lock_object, "codrain", + SLEEPQ_SLEEP, 0); + sleepq_wait(&cc->cc_waiting, 0); + sq_locked = 0; + + /* Reacquire locks previously released. */ + PICKUP_GIANT(); + CC_LOCK(cc); +#else /* __rtems__ */ + BSD_ASSERT(0); +#endif /* __rtems__ */ + } + } else if (use_lock && !cc->cc_cancel) { + /* + * The current callout is waiting for its + * lock which we hold. Cancel the callout + * and return. After our caller drops the + * lock, the callout will be skipped in + * softclock(). + */ + cc->cc_cancel = 1; + CTR3(KTR_CALLOUT, "cancelled %p func %p arg %p", + c, c->c_func, c->c_arg); + CC_UNLOCK(cc); + KASSERT(!sq_locked, ("sleepqueue chain locked")); + return (1); + } + CTR3(KTR_CALLOUT, "failed to stop %p func %p arg %p", + c, c->c_func, c->c_arg); + CC_UNLOCK(cc); + KASSERT(!sq_locked, ("sleepqueue chain still locked")); + return (0); + } +#ifndef __rtems__ + if (sq_locked) + sleepq_release(&cc->cc_waiting); +#endif /* __rtems__ */ + + c->c_flags &= ~(CALLOUT_ACTIVE | CALLOUT_PENDING); + + if (cc->cc_next == c) { + cc->cc_next = TAILQ_NEXT(c, c_links.tqe); + } + TAILQ_REMOVE(&cc->cc_callwheel[c->c_time & callwheelmask], c, + c_links.tqe); + + CTR3(KTR_CALLOUT, "cancelled %p func %p arg %p", + c, c->c_func, c->c_arg); + + if (c->c_flags & CALLOUT_LOCAL_ALLOC) { + c->c_func = NULL; + SLIST_INSERT_HEAD(&cc->cc_callfree, c, c_links.sle); + } + CC_UNLOCK(cc); + return (1); +} + +void +callout_init(c, mpsafe) + struct callout *c; + int mpsafe; +{ + bzero(c, sizeof *c); + if (mpsafe) { + c->c_lock = NULL; + c->c_flags = CALLOUT_RETURNUNLOCKED; + } else { + c->c_lock = &Giant.lock_object; + c->c_flags = 0; + } + c->c_cpu = timeout_cpu; +} + +void +_callout_init_lock(c, lock, flags) + struct callout *c; + struct lock_object *lock; + int flags; +{ + bzero(c, sizeof *c); + c->c_lock = lock; + KASSERT((flags & ~(CALLOUT_RETURNUNLOCKED | CALLOUT_SHAREDLOCK)) == 0, + ("callout_init_lock: bad flags %d", flags)); + KASSERT(lock != NULL || (flags & CALLOUT_RETURNUNLOCKED) == 0, + ("callout_init_lock: CALLOUT_RETURNUNLOCKED with no lock")); + KASSERT(lock == NULL || !(LOCK_CLASS(lock)->lc_flags & + (LC_SPINLOCK | LC_SLEEPABLE)), ("%s: invalid lock class", + __func__)); + c->c_flags = flags & (CALLOUT_RETURNUNLOCKED | CALLOUT_SHAREDLOCK); + c->c_cpu = timeout_cpu; +} + +#ifdef APM_FIXUP_CALLTODO +/* + * Adjust the kernel calltodo timeout list. This routine is used after + * an APM resume to recalculate the calltodo timer list values with the + * number of hz's we have been sleeping. The next hardclock() will detect + * that there are fired timers and run softclock() to execute them. + * + * Please note, I have not done an exhaustive analysis of what code this + * might break. I am motivated to have my select()'s and alarm()'s that + * have expired during suspend firing upon resume so that the applications + * which set the timer can do the maintanence the timer was for as close + * as possible to the originally intended time. Testing this code for a + * week showed that resuming from a suspend resulted in 22 to 25 timers + * firing, which seemed independant on whether the suspend was 2 hours or + * 2 days. Your milage may vary. - Ken Key + */ +void +adjust_timeout_calltodo(time_change) + struct timeval *time_change; +{ + register struct callout *p; + unsigned long delta_ticks; + + /* + * How many ticks were we asleep? + * (stolen from tvtohz()). + */ + + /* Don't do anything */ + if (time_change->tv_sec < 0) + return; + else if (time_change->tv_sec <= LONG_MAX / 1000000) + delta_ticks = (time_change->tv_sec * 1000000 + + time_change->tv_usec + (tick - 1)) / tick + 1; + else if (time_change->tv_sec <= LONG_MAX / hz) + delta_ticks = time_change->tv_sec * hz + + (time_change->tv_usec + (tick - 1)) / tick + 1; + else + delta_ticks = LONG_MAX; + + if (delta_ticks > INT_MAX) + delta_ticks = INT_MAX; + + /* + * Now rip through the timer calltodo list looking for timers + * to expire. + */ + + /* don't collide with softclock() */ + CC_LOCK(cc); + for (p = calltodo.c_next; p != NULL; p = p->c_next) { + p->c_time -= delta_ticks; + + /* Break if the timer had more time on it than delta_ticks */ + if (p->c_time > 0) + break; + + /* take back the ticks the timer didn't use (p->c_time <= 0) */ + delta_ticks = -p->c_time; + } + CC_UNLOCK(cc); + + return; +} +#endif /* APM_FIXUP_CALLTODO */ diff --git a/freebsd/sys/callout.h b/freebsd/sys/callout.h index ed4e20eb..4686a4db 100644 --- a/freebsd/sys/callout.h +++ b/freebsd/sys/callout.h @@ -46,23 +46,16 @@ SLIST_HEAD(callout_list, callout); TAILQ_HEAD(callout_tailq, callout); struct callout { -#ifndef __rtems__ union { SLIST_ENTRY(callout) sle; TAILQ_ENTRY(callout) tqe; } c_links; int c_time; /* ticks to the event */ -#else /* __rtems__ */ - rtems_chain_node c_node; - rtems_id c_id; -#endif /* __rtems__ */ void *c_arg; /* function argument */ void (*c_func)(void *); /* function to call */ struct lock_object *c_lock; /* lock to handle */ int c_flags; /* state of this entry */ -#ifndef __rtems__ volatile int c_cpu; /* CPU we're scheduled on */ -#endif /* __rtems__ */ }; #define CALLOUT_LOCAL_ALLOC 0x0001 /* was allocated from callfree */ @@ -92,12 +85,8 @@ void _callout_init_lock(struct callout *, struct lock_object *, int); NULL, (flags)) #define callout_pending(c) ((c)->c_flags & CALLOUT_PENDING) int callout_reset_on(struct callout *, int, void (*)(void *), void *, int); -#ifndef __rtems__ #define callout_reset(c, on_tick, fn, arg) \ callout_reset_on((c), (on_tick), (fn), (arg), (c)->c_cpu) -#else /* __rtems__ */ -int callout_reset(struct callout *, int, void (*)(void *), void *); -#endif /* __rtems__ */ #define callout_reset_curcpu(c, on_tick, fn, arg) \ callout_reset_on((c), (on_tick), (fn), (arg), PCPU_GET(cpuid)) int callout_schedule(struct callout *, int); diff --git a/freebsd/sys/mutex.h b/freebsd/sys/mutex.h index 434a1eaf..0e8e1739 100644 --- a/freebsd/sys/mutex.h +++ b/freebsd/sys/mutex.h @@ -122,10 +122,15 @@ void _mtx_unlock_spin(struct mtx *m, int opts, const char *file, int line); int _mtx_trylock(struct mtx *m, int opts, const char *file, int line); void _mtx_lock_flags(struct mtx *m, int opts, const char *file, int line); void _mtx_unlock_flags(struct mtx *m, int opts, const char *file, int line); +#ifndef __rtems__ void _mtx_lock_spin_flags(struct mtx *m, int opts, const char *file, int line); void _mtx_unlock_spin_flags(struct mtx *m, int opts, const char *file, int line); +#else /* __rtems__ */ +#define _mtx_lock_spin_flags _mtx_lock_flags +#define _mtx_unlock_spin_flags _mtx_unlock_flags +#endif /* __rtems__ */ #if defined(INVARIANTS) || defined(INVARIANT_SUPPORT) void _mtx_assert(struct mtx *m, int what, const char *file, int line); #endif diff --git a/freebsd/sys/sleepqueue.h b/freebsd/sys/sleepqueue.h new file mode 100644 index 00000000..936ffd88 --- /dev/null +++ b/freebsd/sys/sleepqueue.h @@ -0,0 +1 @@ +/* EMPTY */ diff --git a/rtemsbsd/freebsd/machine/rtems-bsd-symbols.h b/rtemsbsd/freebsd/machine/rtems-bsd-symbols.h index 0fdfda52..c58259dc 100644 --- a/rtemsbsd/freebsd/machine/rtems-bsd-symbols.h +++ b/rtemsbsd/freebsd/machine/rtems-bsd-symbols.h @@ -136,11 +136,6 @@ #define bus_teardown_intr_method_default _bsd_bus_teardown_intr_method_default #define bus_write_ivar_desc _bsd_bus_write_ivar_desc #define bus_write_ivar_method_default _bsd_bus_write_ivar_method_default -#define callout_init _bsd_callout_init -#define _callout_init_lock _bsd__callout_init_lock -#define callout_reset _bsd_callout_reset -#define callout_schedule _bsd_callout_schedule -#define _callout_stop_safe _bsd__callout_stop_safe #define cam_fetch_status_entry _bsd_cam_fetch_status_entry #define cam_quirkmatch _bsd_cam_quirkmatch #define cam_sim_alloc _bsd_cam_sim_alloc diff --git a/rtemsbsd/src/rtems-bsd-callout.c b/rtemsbsd/src/rtems-bsd-callout.c deleted file mode 100644 index 25fd4106..00000000 --- a/rtemsbsd/src/rtems-bsd-callout.c +++ /dev/null @@ -1,140 +0,0 @@ -/** - * @file - * - * @ingroup rtems_bsd_rtems - * - * @brief TODO. - */ - -/* - * Copyright (c) 2009, 2010 embedded brains GmbH. - * All rights reserved. - * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 82178 Puchheim - * Germany - * - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - -#include -#include -#include -#include -#include -#include - -RTEMS_CHAIN_DEFINE_EMPTY(rtems_bsd_callout_chain); - -static void -rtems_bsd_callout_dispatch(rtems_id id, void *arg) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - struct callout *c = arg; - - if (c->c_lock != NULL) { - sc = rtems_semaphore_obtain(c->c_lock->lo_id, RTEMS_WAIT, RTEMS_NO_TIMEOUT); - BSD_ASSERT_SC(sc); - } - - if (c->c_func != NULL) { - (*c->c_func)(c->c_arg); - } - - if (c->c_lock != NULL && (c->c_flags & CALLOUT_RETURNUNLOCKED) == 0) { - sc = rtems_semaphore_release(c->c_lock->lo_id); - BSD_ASSERT_SC(sc); - } -} - -void -callout_init(struct callout *c, int mpsafe) -{ - _callout_init_lock(c, mpsafe ? NULL : &Giant.lock_object, mpsafe ? CALLOUT_RETURNUNLOCKED : 0); -} - -void -_callout_init_lock(struct callout *c, struct lock_object *lock, int flags) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - rtems_id id = RTEMS_ID_NONE; - - sc = rtems_timer_create(rtems_build_name('_', 'T', 'M', 'R'), &id); - BSD_ASSERT_SC(sc); - - c->c_id = id; - c->c_lock = lock; - c->c_flags = flags; - c->c_func = NULL; - c->c_arg = NULL; - - rtems_chain_append(&rtems_bsd_callout_chain, &c->c_node); -} - -int -callout_reset(struct callout *c, int to_ticks, void (*ftn)(void *), void *arg) -{ - /* FIXME: Integer conversions */ - - rtems_status_code sc = RTEMS_SUCCESSFUL; - - if (to_ticks <= 0) { - to_ticks = 1; - } - - c->c_func = ftn; - c->c_arg = arg; - - sc = rtems_timer_server_fire_after(c->c_id, (rtems_interval) to_ticks, rtems_bsd_callout_dispatch, c); - BSD_ASSERT_SC(sc); - - return 0; -} - -int -callout_schedule(struct callout *c, int to_ticks) -{ - return callout_reset(c, to_ticks, c->c_func, c->c_arg); -} - -int -_callout_stop_safe(struct callout *c, int safe) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - - if (!safe) { - sc = rtems_timer_cancel(c->c_id); - BSD_ASSERT_SC(sc); - } else { - sc = rtems_timer_delete(c->c_id); - BSD_ASSERT_SC(sc); - - c->c_id = RTEMS_ID_NONE; - rtems_chain_extract(&c->c_node); - } - - return 0; -} diff --git a/rtemsbsd/src/rtems-bsd-shell.c b/rtemsbsd/src/rtems-bsd-shell.c index 786b7124..f80e9371 100644 --- a/rtemsbsd/src/rtems-bsd-shell.c +++ b/rtemsbsd/src/rtems-bsd-shell.c @@ -51,23 +51,6 @@ #include #include -static void -rtems_bsd_dump_callout(void) -{ - rtems_chain_control *chain = &rtems_bsd_callout_chain; - rtems_chain_node *node = rtems_chain_first(chain); - - printf("callout dump:\n"); - - while (!rtems_chain_is_tail(chain, node)) { - struct callout *c = (struct callout *) node; - - printf("\t%08x\n", c->c_id); - - node = rtems_chain_next(node); - } -} - static void rtems_bsd_dump_mtx(void) { @@ -169,10 +152,6 @@ rtems_bsd_info(int argc, char **argv) rtems_bsd_dump_thread(); usage = false; } - if (CMP("callout")) { - rtems_bsd_dump_callout(); - usage = false; - } } if (usage) { diff --git a/rtemsbsd/src/rtems-bsd-timeout.c b/rtemsbsd/src/rtems-bsd-timeout.c deleted file mode 100644 index 0055c42e..00000000 --- a/rtemsbsd/src/rtems-bsd-timeout.c +++ /dev/null @@ -1,129 +0,0 @@ -/** - * @file - * - * @ingroup rtems_bsd_rtems - * - * @brief TODO. - */ - -/* - * COPYRIGHT (c) 2012. - * On-Line Applications Research Corporation (OAR). - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include -#include -__FBSDID("$FreeBSD$"); - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static int timeout_cpu; -/* - * There is one struct callout_cpu per cpu, holding all relevant - * state for the callout processing thread on the individual CPU. - * In particular: - * cc_ticks is incremented once per tick in callout_cpu(). - * It tracks the global 'ticks' but in a way that the individual - * threads should not worry about races in the order in which - * hardclock() and hardclock_cpu() run on the various CPUs. - * cc_softclock is advanced in callout_cpu() to point to the - * first entry in cc_callwheel that may need handling. In turn, - * a softclock() is scheduled so it can serve the various entries i - * such that cc_softclock <= i <= cc_ticks . - * XXX maybe cc_softclock and cc_ticks should be volatile ? - * - * cc_ticks is also used in callout_reset_cpu() to determine - * when the callout should be served. - */ -struct callout_cpu { - struct mtx cc_lock; - struct callout *cc_callout; - struct callout_tailq *cc_callwheel; - struct callout_list cc_callfree; - struct callout *cc_next; - struct callout *cc_curr; - void *cc_cookie; - int cc_ticks; - int cc_softticks; - int cc_cancel; - int cc_waiting; -}; - -/* - * timeout -- - * Execute a function after a specified length of time. - * - * untimeout -- - * Cancel previous timeout function call. - * - * callout_handle_init -- - * Initialize a handle so that using it with untimeout is benign. - * - * See AT&T BCI Driver Reference Manual for specification. This - * implementation differs from that one in that although an - * identification value is returned from timeout, the original - * arguments to timeout as well as the identifier are used to - * identify entries for untimeout. - */ - -struct callout_handle -timeout(ftn, arg, to_ticks) - timeout_t *ftn; - void *arg; - int to_ticks; -{ - struct callout_cpu *cc; - struct callout *new; - struct callout_handle handle; - -#if 0 - cc = CC_CPU(timeout_cpu); - CC_LOCK(cc); - /* Fill in the next free callout structure. */ - new = SLIST_FIRST(&cc->cc_callfree); - if (new == NULL) - /* XXX Attempt to malloc first */ - panic("timeout table full"); - SLIST_REMOVE_HEAD(&cc->cc_callfree, c_links.sle); - callout_reset(new, to_ticks, ftn, arg); - handle.callout = new; - CC_UNLOCK(cc); -#endif - return (handle); -} - - diff --git a/testsuite/swi01/Makefile b/testsuite/swi01/Makefile new file mode 100644 index 00000000..dd7c6882 --- /dev/null +++ b/testsuite/swi01/Makefile @@ -0,0 +1,29 @@ +include ../../config.inc + +include $(RTEMS_MAKEFILE_PATH)/Makefile.inc +include $(RTEMS_CUSTOM) +include $(PROJECT_ROOT)/make/leaf.cfg + +APP_PIECES = init swi_test + +APP_O_FILES = $(APP_PIECES:%=%.o) +APP_DEP_FILES = $(APP_PIECES:%=%.dep) + +APP = app.exe + +DEPFLAGS = -MT $@ -MD -MP -MF $*.dep +AM_CPPFLAGS += -I $(INSTALL_BASE)/include -I. + +CFLAGS += $(DEPFLAGS) $(GCCFLAGS) $(AM_CPPFLAGS) -Wno-unused -Wl,-Map,app.map + +LINK_LIBS += $(INSTALL_BASE)/libbsd.a + +all: $(APP) + +$(APP): $(APP_O_FILES) + $(CC) $(CFLAGS) $^ $(LINK_LIBS) -o $(APP) + +clean: + rm -f app.map $(APP) $(APP_O_FILES) $(APP_DEP_FILES) + +-include $(APP_DEP_FILES) diff --git a/testsuite/swi01/init.c b/testsuite/swi01/init.c new file mode 100644 index 00000000..9bc13dc6 --- /dev/null +++ b/testsuite/swi01/init.c @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include + +#include + +#include + +#include "swi_test.h" + +static void Init(rtems_task_argument arg) +{ + rtems_status_code sc; + + puts("\n\n*** TEST SOFTWARE INTERRUPT 1 ***"); + + sc = rtems_bsd_initialize(); + assert(sc == RTEMS_SUCCESSFUL); + + swi_test(); + + puts("*** END OF TEST SOFTWARE INTERRUPT 1 ***"); + + exit(0); +} + +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER + +#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM + +#define CONFIGURE_FILESYSTEM_IMFS + +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 32 + +#define CONFIGURE_UNLIMITED_OBJECTS + +#define CONFIGURE_UNIFIED_WORK_AREAS + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_STACK_CHECKER_ENABLED + +#define CONFIGURE_INIT + +#include diff --git a/testsuite/swi01/swi_test.c b/testsuite/swi01/swi_test.c new file mode 100644 index 00000000..99ba94f4 --- /dev/null +++ b/testsuite/swi01/swi_test.c @@ -0,0 +1,208 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include + +#include +#include + +#include + +#include +#include + +#include +#include +#include + +#define SWI_TEST_THREAD_PRIO (0) + +// Time to wait for swi-test-handler +#define SWI_SLEEP_TIME (100) + +enum arg { + HANDLER_NOT_VISITED, + HANDLER_VISITED, +}; + +// The swi handler function, that will be called by all tests. +void swi_test_handler(void *arg) +{ + enum arg* argument = arg; + + printf("This is swi_test_handler.\n"); + + *argument = HANDLER_VISITED; +} + +void swi_test_normal_handler() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih = NULL; + int retval = 0; + + printf("== Create thread and install a functional handler.\n"); + + retval = swi_add(&test_intr_event, "swi_test", swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, 0, &test_ih); + assert(retval == 0); + + swi_sched(test_ih, 0); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_VISITED); +} + +void swi_test_exclusive_handler() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih = NULL; + int retval = 0; + + printf("== Create a thread with a exclusive handler.\n"); + + retval = swi_add(&test_intr_event, "swi_test", swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, INTR_EXCL, &test_ih); + assert(retval == 0); + + swi_sched(test_ih, 0); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_VISITED); +} + +void swi_test_error_number_of_processes_exceeded() +{ + // [EAGAIN] The system-imposed limit on the total number of processes + // under execution would be exceeded. The limit is given by the + // sysctl(3) MIB variable KERN_MAXPROC. +#warning TODO: write test case +} + +void swi_test_error_intr_entropy_set() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih = NULL; + int retval = 0; + + printf("== Set the INTR_ENTROPY flag.\n"); + + retval = swi_add(&test_intr_event, "swi_test", swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, INTR_ENTROPY, &test_ih); + assert(retval == EINVAL); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_NOT_VISITED); +} + +void swi_test_error_point_to_hardware_interrupt_thread() +{ + //[EINVAL] The ithdp argument points to a hardware interrupt thread. +#warning TODO: write test case +} + +void swi_test_error_name_null() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih = NULL; + int retval = 0; + + printf("== Set name to NULL.\n"); + + retval = swi_add(&test_intr_event, NULL, swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, 0, &test_ih); + assert(retval == EINVAL); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_NOT_VISITED); +} + +void swi_test_error_handler_null() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih = NULL; + int retval = 0; + + printf("== Set handler to NULL.\n"); + + retval = swi_add(&test_intr_event, "swi_test", NULL, &argument, + SWI_TEST_THREAD_PRIO, 0, &test_ih); + assert(retval == EINVAL); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_NOT_VISITED); +} + +void swi_test_error_has_allready_exclusive() +{ + struct intr_event *test_intr_event = NULL; + enum arg argument = HANDLER_NOT_VISITED; + void *test_ih1 = NULL; + void *test_ih2 = NULL; + int retval = 0; + + printf("== Create a thread with a exclusive handler and try to add another handler.\n"); + + retval = swi_add(&test_intr_event, "swi_test1", swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, INTR_EXCL, &test_ih1); + assert(retval == 0); + + retval = swi_add(&test_intr_event, "swi_test2", swi_test_handler, &argument, + SWI_TEST_THREAD_PRIO, 0, &test_ih2); + assert(retval == EINVAL); + + usleep(SWI_SLEEP_TIME); + + assert(argument == HANDLER_NOT_VISITED); +} + +void swi_test(void) +{ + swi_test_normal_handler(); + swi_test_exclusive_handler(); + swi_test_error_number_of_processes_exceeded(); + swi_test_error_intr_entropy_set(); + swi_test_error_point_to_hardware_interrupt_thread(); + swi_test_error_name_null(); + swi_test_error_handler_null(); + swi_test_error_has_allready_exclusive(); +} + diff --git a/testsuite/swi01/swi_test.h b/testsuite/swi01/swi_test.h new file mode 100644 index 00000000..e7708b6c --- /dev/null +++ b/testsuite/swi01/swi_test.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef SWI_TEST_H +#define SWI_TEST_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +void swi_test(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* TEST_H */ diff --git a/testsuite/timeout01/Makefile b/testsuite/timeout01/Makefile new file mode 100644 index 00000000..6e38da14 --- /dev/null +++ b/testsuite/timeout01/Makefile @@ -0,0 +1,29 @@ +include ../../config.inc + +include $(RTEMS_MAKEFILE_PATH)/Makefile.inc +include $(RTEMS_CUSTOM) +include $(PROJECT_ROOT)/make/leaf.cfg + +APP_PIECES = init timeout_test timeout_helper + +APP_O_FILES = $(APP_PIECES:%=%.o) +APP_DEP_FILES = $(APP_PIECES:%=%.dep) + +APP = app.exe + +DEPFLAGS = -MT $@ -MD -MP -MF $*.dep +AM_CPPFLAGS += -I $(INSTALL_BASE)/include -I. + +CFLAGS += $(DEPFLAGS) $(GCCFLAGS) $(AM_CPPFLAGS) -Wno-unused -Wl,-Map,app.map + +LINK_LIBS += $(INSTALL_BASE)/libbsd.a + +all: $(APP) + +$(APP): $(APP_O_FILES) + $(CC) $(CFLAGS) $^ $(LINK_LIBS) -o $(APP) + +clean: + rm -f app.map $(APP) $(APP_O_FILES) $(APP_DEP_FILES) + +-include $(APP_DEP_FILES) diff --git a/testsuite/timeout01/init.c b/testsuite/timeout01/init.c new file mode 100644 index 00000000..f1bd5291 --- /dev/null +++ b/testsuite/timeout01/init.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include + +#include + +#include + +#include "timeout_test.h" +#include "timeout_helper.h" + +static void Init(rtems_task_argument arg) +{ + rtems_status_code sc; + + puts("\n\n*** TEST TIMOUT 1 ***"); + + sc = rtems_bsd_initialize(); + assert(sc == RTEMS_SUCCESSFUL); + + timeout_table_init(); + callout_tick_task_init(); + + timeout_test(); + + puts("*** END OF TEST TIMOUT 1 ***"); + + exit(0); +} + +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER + +#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM + +#define CONFIGURE_FILESYSTEM_IMFS + +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 32 + +#define CONFIGURE_UNLIMITED_OBJECTS + +#define CONFIGURE_UNIFIED_WORK_AREAS + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_STACK_CHECKER_ENABLED + +#define CONFIGURE_INIT + +#include diff --git a/testsuite/timeout01/timeout_helper.c b/testsuite/timeout01/timeout_helper.c new file mode 100644 index 00000000..88d8510d --- /dev/null +++ b/testsuite/timeout01/timeout_helper.c @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include + +#include +#include + +#include +#include + +#include "timeout_helper.h" + +void timeout_table_init() +{ + size_t size = 0; + caddr_t v = 0; + void* firstaddr = 0; + + /* calculates how much memory is needed */ + v = kern_timeout_callwheel_alloc(v); + + /* allocate memory */ + size = (size_t)v; + firstaddr = malloc(round_page(size)); + assert(firstaddr != NULL); + + /* now set correct addresses for callwheel */ + v = (caddr_t) firstaddr; + v = kern_timeout_callwheel_alloc(v); + + assert((size_t)((void *)v - firstaddr) == size); + + /* Initialize the callouts we just allocated. */ + kern_timeout_callwheel_init(); +} + +#define CALLOUT_TICK_TASK_PRIO (PRIORITY_DEFAULT_MAXIMUM - 1) +#define CALLOUT_TICK_TASK_STACK_SIZE (1024) +#define CALLOUT_TICK_TASK_NAME rtems_build_name('C', 'O', 'U', 'T') +#define CALLOUT_TICKS_PER_CALLOUT_TICK 1 + +static const rtems_event_set TRIGGER_EVENT = RTEMS_EVENT_13; + +static void callout_tick_task_trigger(rtems_id timer, void *arg) +{ + rtems_status_code status; + rtems_id *task_id = arg; + + status = rtems_event_send(*task_id, TRIGGER_EVENT); + assert(status == RTEMS_SUCCESSFUL); + + status = rtems_timer_reset(timer); + assert(status == RTEMS_SUCCESSFUL); +} + +rtems_task callout_tick_task(rtems_task_argument arg) +{ + rtems_name name; + rtems_id timer; + rtems_status_code status; + const rtems_interval ticks_per_ms = CALLOUT_TICKS_PER_CALLOUT_TICK; + rtems_id self_id = rtems_task_self(); + + name = CALLOUT_TICK_TASK_NAME; + + status = rtems_timer_create( name, &timer ); + assert(status == RTEMS_SUCCESSFUL); + + status = rtems_timer_fire_after( timer, ticks_per_ms, callout_tick_task_trigger, &self_id ); + assert(status == RTEMS_SUCCESSFUL); + + while ( 1 ) { + rtems_event_set event; + + status = rtems_event_receive( + TRIGGER_EVENT, + RTEMS_EVENT_ALL | RTEMS_WAIT, + RTEMS_NO_TIMEOUT, + &event + ); + assert(status == RTEMS_SUCCESSFUL); + assert(event == TRIGGER_EVENT); + + callout_tick(); + } +} + + +void callout_tick_task_init(void) +{ + static bool initialized = false; + rtems_status_code sc = RTEMS_SUCCESSFUL; + + if (!initialized) { + rtems_id id = RTEMS_ID_NONE; + + initialized = true; + + sc = rtems_task_create( + CALLOUT_TICK_TASK_NAME, + CALLOUT_TICK_TASK_PRIO, + CALLOUT_TICK_TASK_STACK_SIZE, + RTEMS_DEFAULT_MODES, + RTEMS_DEFAULT_ATTRIBUTES, + &id + ); + assert(sc == RTEMS_SUCCESSFUL); + + sc = rtems_task_start(id, callout_tick_task, 0); + assert(sc == RTEMS_SUCCESSFUL); + } +} + diff --git a/testsuite/timeout01/timeout_helper.h b/testsuite/timeout01/timeout_helper.h new file mode 100644 index 00000000..7e5acce1 --- /dev/null +++ b/testsuite/timeout01/timeout_helper.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef TIMEOUT_HELPER_H +#define TIMEOUT_HELPER_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +void timeout_table_init(void); +void callout_tick_task_init(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* TIMEOUT_HELPER_H */ diff --git a/testsuite/timeout01/timeout_test.c b/testsuite/timeout01/timeout_test.c new file mode 100644 index 00000000..b89feb84 --- /dev/null +++ b/testsuite/timeout01/timeout_test.c @@ -0,0 +1,282 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include + +#include +#include + +#include + +#include +#include + +#include +#include +#include +#include + +#define TIMEOUT_MILLISECONDS (100) + +// test after TEST_NOT_FIRED_MS, if handlar has not been executed +#define TEST_NOT_FIRED_MS (TIMEOUT_MILLISECONDS * 80 / 100) +// test TEST_FIRED_MS after TEST_NOT_FIRED_MS, if handlar has been executed +#define TEST_FIRED_MS (TIMEOUT_MILLISECONDS * 40 / 100) +// delay handler by this time with a mutex +#define TEST_DELAY_MS (TIMEOUT_MILLISECONDS) + +enum arg { + HANDLER_NOT_VISITED, + HANDLER_VISITED, +}; + +static void timeout_handler(void *arg) +{ + enum arg* argument = arg; + + printf("This is the timout_handler.\n"); + + *argument = HANDLER_VISITED; +} + +void timeout_test_timeout() +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout_handle handle; + + printf("== Start a timeout and test if handler has been called.\n"); + + callout_handle_init(&handle); + + handle = timeout(timeout_handler, &argument, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS)); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_VISITED); +} + +void timeout_test_cancel_timeout() +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout_handle handle; + + printf("== Start a timeout and cancel it.\n"); + + callout_handle_init(&handle); + + handle = timeout(timeout_handler, &argument, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS)); + + usleep(TEST_NOT_FIRED_MS * 1000); + + untimeout(timeout_handler, &argument, handle); + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); +} + +void timeout_test_callout(int mpsave) +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout callout; + int retval = 0; + printf("== Start a callout and test if handler has been called. mpsave=%d\n", mpsave); + + callout_init(&callout, mpsave); + + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + assert(retval == 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_VISITED); + + callout_deactivate(&callout); +} + +void timeout_test_cancel_callout(int mpsave, bool use_drain) +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout callout; + int retval = 0; + printf("== Start a callout and cancel it with %s. mpsave=%d\n", use_drain ? "drain" : "stop", mpsave); + + callout_init(&callout, mpsave); + + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + assert(retval == 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + + if(!use_drain) + { + retval = callout_stop(&callout); + } + else + { + retval = callout_drain(&callout); + } + assert(retval != 0); + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + callout_deactivate(&callout); +} + +void timeout_test_callout_reschedule(int mpsave, bool use_reset) +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout callout; + int retval = 0; + printf("== Start a callout and reschedule it after some time with %s. mpsave=%d\n", use_reset ? "reset" : "schedule", mpsave); + + callout_init(&callout, mpsave); + + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + assert(retval == 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + if(!use_reset) + { + retval = callout_schedule(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS)); + } + else + { + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + } + assert(retval != 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_VISITED); + + callout_deactivate(&callout); +} + +void timeout_test_callout_mutex(bool delay_with_lock) +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout callout; + struct mtx mtx; + int retval = 0; + printf("== Start a callout with a mutex%s\n", delay_with_lock ? " and delay execution by locking it." : "."); + + mtx_init(&mtx, "callouttest", NULL, MTX_DEF); + callout_init_mtx(&callout, &mtx, 0); + + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + assert(retval == 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + if(delay_with_lock) + { + retval = mtx_trylock(&mtx); + assert(retval != 0); + + usleep(TEST_DELAY_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + mtx_unlock(&mtx); + } + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_VISITED); + + callout_deactivate(&callout); + + mtx_destroy(&mtx); +} + +void timeout_test_callout_rwlock(bool delay_with_lock) +{ + enum arg argument = HANDLER_NOT_VISITED; + struct callout callout; + struct rwlock rw; + int retval = 0; + printf("== Start a callout with a rwlock%s\n", delay_with_lock ? " and delay execution by locking it." : "."); + + rw_init(&rw, "callouttest"); + callout_init_rw(&callout, &rw, 0); + + retval = callout_reset(&callout, RTEMS_MILLISECONDS_TO_TICKS(TIMEOUT_MILLISECONDS), timeout_handler, &argument); + assert(retval == 0); + + usleep(TEST_NOT_FIRED_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + if(delay_with_lock) + { + retval = rw_try_wlock(&rw); + assert(retval != 0); + + usleep(TEST_DELAY_MS * 1000); + assert(argument == HANDLER_NOT_VISITED); + + rw_wunlock(&rw); + } + + usleep(TEST_FIRED_MS * 1000); + assert(argument == HANDLER_VISITED); + + callout_deactivate(&callout); +} + +void timeout_test(void) +{ + int mpsave = 0; + + timeout_test_timeout(); + timeout_test_cancel_timeout(); + + for(mpsave = 0; mpsave<=1; mpsave++) + { + timeout_test_callout(mpsave); + timeout_test_cancel_callout(mpsave, false); + timeout_test_cancel_callout(mpsave, true); + timeout_test_callout_reschedule(mpsave, false); + timeout_test_callout_reschedule(mpsave, true); + } + + timeout_test_callout_mutex(false); + timeout_test_callout_mutex(true); + timeout_test_callout_rwlock(false); + timeout_test_callout_rwlock(true); +} diff --git a/testsuite/timeout01/timeout_test.h b/testsuite/timeout01/timeout_test.h new file mode 100644 index 00000000..25d4cb20 --- /dev/null +++ b/testsuite/timeout01/timeout_test.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2012 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef TIMEOUT_TEST_H +#define TIMEOUT_TEST_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +void timeout_test(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* TIMEOUT_TEST_H */ -- cgit v1.2.3