154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/****************************************************************************
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* apps/examples/thttpd/content/tasks/tasks.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sched.h>
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#include <nuttx/sched.h>
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const char *g_statenames[] =
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{
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"INVALID ",
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"PENDING ",
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"READY ",
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"RUNNING ",
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"INACTIVE",
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"WAITSEM ",
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#ifndef CONFIG_DISABLE_MQUEUE
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"WAITSIG ",
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#endif
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#ifndef CONFIG_DISABLE_MQUEUE
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"MQNEMPTY",
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"MQNFULL "
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#endif
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};
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static const char *g_ttypenames[4] =
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{
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"TASK ",
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"PTHREAD",
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"KTHREAD",
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"--?-- "
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};
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static FAR const char *g_policynames[4] =
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{
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"FIFO",
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"RR ",
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"SPOR",
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"OTHR"
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/* NOTEs:
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*
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* 1. One limitation in the use of NXFLAT is that functions that are
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* referenced as a pointer-to-a-function must have global scope.
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* Otherwise ARM GCC will generate some bad logic.
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* 2. In general, when called back, there is no guarantee to that PIC
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* registers will be valid and, unless you take special precautions, it
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* could be dangerous to reference global variables in the callback
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* function.
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*/
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void show_task(FAR struct tcb_s *tcb, FAR void *arg)
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{
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FAR const char *policy;
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/* Show task/thread status */
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policy = g_policynames[(tcb->flags & TCB_FLAG_POLICY_MASK) >>
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TCB_FLAG_POLICY_SHIFT];
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#if CONFIG_TASK_NAME_SIZE > 0
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printf("%5d %3d %4s %7s%c%c %8s %s\n",
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#else
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printf("%5d %3d %4s %7s%c%c %8s\n",
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#endif
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tcb->pid, tcb->sched_priority, policy,
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g_ttypenames[(tcb->flags & TCB_FLAG_TTYPE_MASK) >>
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TCB_FLAG_TTYPE_SHIFT],
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tcb->flags & TCB_FLAG_NONCANCELABLE ? 'N' : ' ',
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tcb->flags & TCB_FLAG_CANCEL_PENDING ? 'P' : ' ',
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g_statenames[tcb->task_state]
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#if CONFIG_TASK_NAME_SIZE > 0
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, tcb->name
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#endif
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);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifdef CONFIG_THTTPD_BINFS
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int tasks_main(int argc, char *argv[])
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#else
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int main(int argc, char *argv[])
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#endif
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{
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puts(
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"Content-type: text/html\r\n"
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"Status: 200/html\r\n"
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"\r\n"
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"<html>\r\n"
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"<head>\r\n"
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"<title>NuttX Tasks</title>\r\n"
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"<link rel=\"stylesheet\" type=\"text/css\" href=\"/style.css\">\r\n"
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"</head>\r\n"
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"<body bgcolor=\"#fffeec\" text=\"black\">\r\n"
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"<div class=\"menu\">\r\n"
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"<div class=\"menubox\"><a href=\"/index.html\">Front page</a></div>\r\n"
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"<div class=\"menubox\"><a href=\"hello\">Say Hello</a></div>\r\n"
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"<div class=\"menubox\"><a href=\"tasks\">Tasks</a></div>\r\n"
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"<br>\r\n"
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"</div>\r\n"
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"<div class=\"contentblock\">\r\n"
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"<pre>\r\n"
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"PID PRI SCHD TYPE NP STATE NAME\r\n");
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nxsched_foreach(show_task, NULL);
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puts(
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"</pre>\r\n"
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"</body>\r\n"
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"</html>\r\n");
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return 0;
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}
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