/**************************************************************************** * examples/thttpd/tasks/tasks.c * * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * 3. Neither the name NuttX 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 COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include /**************************************************************************** * Definitions ****************************************************************************/ /**************************************************************************** * Private Types ****************************************************************************/ /**************************************************************************** * Private Function Prototypes ****************************************************************************/ /**************************************************************************** * 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", "--?-- " }; /**************************************************************************** * 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. */ /* static */ void show_task(FAR _TCB *tcb, FAR void *arg) { int i; /* Show task status */ printf("%5d %3d %4s %7s%c%c %8s ", tcb->pid, tcb->sched_priority, tcb->flags & TCB_FLAG_ROUND_ROBIN ? "RR " : "FIFO", 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]); /* Show task name and arguments */ printf("%s(", tcb->argv[0]); /* Special case 1st argument (no comma) */ if (tcb->argv[1]) { printf("%p", tcb->argv[1]); } /* Then any additional arguments */ #if CONFIG_MAX_TASK_ARGS > 2 for (i = 2; i <= CONFIG_MAX_TASK_ARGS && tcb->argv[i]; i++) { printf(", %p", tcb->argv[i]); } #endif printf(")\n"); } /**************************************************************************** * Public Functions ****************************************************************************/ int main(int argc, char *argv[]) { puts( "Content-type: text/html\r\n" "Status: 200/html\r\n" "\r\n" "\r\n" "\r\n" "NuttX Tasks\r\n" "\r\n" "\r\n" "\r\n" "
\r\n" "\r\n" "\r\n" "\r\n" "\r\n" "
\r\n" "
\r\n" "
\r\n" "
\r\n"
        "PID   PRI SCHD TYPE   NP STATE    NAME\r\n");

  sched_foreach(show_task, NULL);

  puts(
        "
\r\n" "\r\n" "\r\n"); return 0; }