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