127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/*
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* Copyright (c) 2008 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <debug.h>
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#include <kernel/thread.h>
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#include <kernel/timer.h>
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#include <platform.h>
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#if defined(WITH_LIB_CONSOLE)
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#include <lib/console.h>
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static int cmd_threads(int argc, const cmd_args *argv);
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static int cmd_threadstats(int argc, const cmd_args *argv);
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static int cmd_threadload(int argc, const cmd_args *argv);
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STATIC_COMMAND_START
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#if DEBUGLEVEL > 1
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{ "threads", "list kernel threads", &cmd_threads },
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#endif
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#if THREAD_STATS
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{ "threadstats", "thread level statistics", &cmd_threadstats },
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{ "threadload", "toggle thread load display", &cmd_threadload },
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#endif
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STATIC_COMMAND_END(kernel);
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#if DEBUGLEVEL > 1
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static int cmd_threads(int argc, const cmd_args *argv)
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{
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printf("thread list:\n");
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dump_all_threads();
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return 0;
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}
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#endif
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#if THREAD_STATS
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static int cmd_threadstats(int argc, const cmd_args *argv)
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{
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printf("thread stats:\n");
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printf("\ttotal idle time: %lld\n", thread_stats.idle_time);
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printf("\ttotal busy time: %lld\n", current_time_hires() - thread_stats.idle_time);
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printf("\treschedules: %d\n", thread_stats.reschedules);
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printf("\tcontext_switches: %d\n", thread_stats.context_switches);
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printf("\tpreempts: %d\n", thread_stats.preempts);
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printf("\tyields: %d\n", thread_stats.yields);
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printf("\tinterrupts: %d\n", thread_stats.interrupts);
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printf("\ttimer interrupts: %d\n", thread_stats.timer_ints);
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printf("\ttimers: %d\n", thread_stats.timers);
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return 0;
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}
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static enum handler_return threadload(struct timer *t, time_t now, void *arg)
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{
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static struct thread_stats old_stats;
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static bigtime_t last_idle_time;
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timer_set_oneshot(t, 1000, &threadload, NULL);
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bigtime_t idle_time = thread_stats.idle_time;
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if (current_thread == idle_thread) {
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idle_time += current_time_hires() - thread_stats.last_idle_timestamp;
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}
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bigtime_t busy_time = 1000000ULL - (idle_time - last_idle_time);
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uint busypercent = (busy_time * 10000) / (1000000);
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// printf("idle_time %lld, busytime %lld\n", idle_time - last_idle_time, busy_time);
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printf("LOAD: %d.%02d%%, cs %d, ints %d, timer ints %d, timers %d\n", busypercent / 100, busypercent % 100,
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thread_stats.context_switches - old_stats.context_switches,
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thread_stats.interrupts - old_stats.interrupts,
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thread_stats.timer_ints - old_stats.timer_ints,
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thread_stats.timers - old_stats.timers);
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old_stats = thread_stats;
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last_idle_time = idle_time;
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return INT_NO_RESCHEDULE;
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}
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static int cmd_threadload(int argc, const cmd_args *argv)
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{
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static bool showthreadload = false;
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static timer_t tltimer;
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enter_critical_section();
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if (showthreadload == false) {
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// start the display
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timer_initialize(&tltimer);
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timer_set_oneshot(&tltimer, 1000, &threadload, NULL);
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showthreadload = true;
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} else {
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timer_cancel(&tltimer);
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showthreadload = false;
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}
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exit_critical_section();
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return 0;
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}
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#endif
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#endif
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