diff options
author | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-04-26 15:00:35 +0000 |
---|---|---|
committer | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-04-26 15:00:35 +0000 |
commit | 305cf084d4c7b4bdbc4160b3ecaed1bdeb72471b (patch) | |
tree | b23f5485d292150d73b40bd01730a22b1677a574 /nuttx/sched | |
parent | 414af0aef26871f7e38df5c69bcc0e619ef25c95 (diff) | |
download | px4-firmware-305cf084d4c7b4bdbc4160b3ecaed1bdeb72471b.tar.gz px4-firmware-305cf084d4c7b4bdbc4160b3ecaed1bdeb72471b.tar.bz2 px4-firmware-305cf084d4c7b4bdbc4160b3ecaed1bdeb72471b.zip |
Add interfaces to support getting/setting of thread/task names
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4658 7fd9a85b-ad96-42d3-883c-3090e2eb8679
Diffstat (limited to 'nuttx/sched')
-rw-r--r-- | nuttx/sched/Makefile | 2 | ||||
-rw-r--r-- | nuttx/sched/prctl.c | 138 |
2 files changed, 139 insertions, 1 deletions
diff --git a/nuttx/sched/Makefile b/nuttx/sched/Makefile index b8a1bb519..dfdc6f68b 100644 --- a/nuttx/sched/Makefile +++ b/nuttx/sched/Makefile @@ -43,7 +43,7 @@ MISC_SRCS = os_start.c os_bringup.c errno_getptr.c errno_get.c errno_set.c \ sched_getstreams.c sched_setupidlefiles.c sched_setuptaskfiles.c \ sched_setuppthreadfiles.c sched_releasefiles.c -TSK_SRCS = task_create.c task_init.c task_setup.c task_activate.c \ +TSK_SRCS = prctl.c task_create.c task_init.c task_setup.c task_activate.c \ task_start.c task_delete.c task_deletecurrent.c task_exithook.c \ task_restart.c exit.c getpid.c sched_addreadytorun.c \ sched_removereadytorun.c sched_addprioritized.c sched_mergepending.c \ diff --git a/nuttx/sched/prctl.c b/nuttx/sched/prctl.c new file mode 100644 index 000000000..93d69ee02 --- /dev/null +++ b/nuttx/sched/prctl.c @@ -0,0 +1,138 @@ +/************************************************************************ + * sched/prctl.c + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 <nuttx/config.h> + +#include <sys/prctl.h> +#include <stdarg.h> +#include <string.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/sched.h> +#include "os_internal.h" + +/************************************************************************ + * Private Functions + ************************************************************************/ + +/************************************************************************ + * Public Functions + ************************************************************************/ + +/**************************************************************************** + * Name: prctl + * + * Description: + * prctl() is called with a first argument describing what to do (with + * values PR_* defined above) and with additional arguments depending on + * the specific command. + * + * Returned Value: + * The returned value may depend on the specific commnand. For PR_SET_NAME + * and PR_GET_NAME, the returned value of 0 indicates successful operation. + * On any failure, -1 is retruend and the errno value is set appropriately. + * + * EINVAL The value of 'option' is not recognized. + * EFAULT optional arg1 is not a valid address. + * ESRCH No task/thread can be found corresponding to that specified + * by optional arg1. + * + ****************************************************************************/ + +int prctl(int option, ...) +{ + va_list ap; + int err; + + va_start(ap, option); + switch (option) + { + case PR_SET_NAME: + case PR_GET_NAME: +#if CONFIG_TASK_NAME_SIZE > 0 + { + int pid = va_arg(ap, int); + char *name = va_arg(ap, char *); + FAR _TCB *tcb = sched_gettcb(pid); + if (!tcb) + { + sdbg("Pid does not correspond to a task: %d\n", pid); + err = ESRCH; + goto errout; + } + + if (!name) + { + sdbg("No name provide\n"); + err = EFAULT; + goto errout; + } + + if (option == PR_SET_NAME) + { + strncpy(tcb->name, name, CONFIG_TASK_NAME_SIZE); + } + else + { + strncpy(name, tcb->name, CONFIG_TASK_NAME_SIZE-1); + name[CONFIG_TASK_NAME_SIZE-1]; + } + } + break; +#else + sdbg("Option not enabled: %d\n", option); + err = ENOSYS; + goto errout; +#endif + + default: + sdbg("Unrecognized option: %d\n", option); + err = EINVAL; + goto errout; + } + + va_end(ap); + return OK; + +errout: + va_end(ap); + set_errno(err); + return ERROR; +} |