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

nuttx/include/sys/prctl.h

@@ -0,0 +1,115 @@
+/****************************************************************************
+ * include/sys/prctl.h
+ *
+ *   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.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_SYS_PRCTL_H
+#define __INCLUDE_SYS_PRCTL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Supported prctl() commands.
+ *
+ *
+ *  PR_SET_NAME
+ *    Set the task (or thread) name for the thread whose ID is in required
+ *    arg2 (int), using the value in the location pointed to by required arg1
+ *    (char*).  The name can be up to CONFIG_TASK_NAME_SIZE long (including
+ *    any null termination).  The thread ID of 0 will set the name of the
+ *    calling thread. As an example:
+ *
+ *      prctl(PR_SET_NAME, "MyName", 0);
+ *
+ *  PR_GET_NAME
+ *    Return the task (or thread) name for the for the thread whose ID is
+ *    optional arg2 (int), in the buffer pointed to by optional arg1 (char *).
+ *    The buffer must be CONFIG_TASK_NAME_SIZE long (including any null
+ *    termination). As an example:
+ *
+ *      char myname[CONFIG_TASK_NAME_SIZE];
+ *      prctl(PR_GET_NAME, myname, 0);
+ */
+
+ #define PR_SET_NAME 1
+ #define PR_GET_NAME 2
+ 
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+ 
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * 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. 
+ *   
+ ****************************************************************************/
+
+EXTERN int prctl(int option, ...);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_PRCTL_H */

nuttx/include/sys/syscall.h

@@ -2,8 +2,8 @@
  * include/sys/syscall.h
  * This file contains the system call numbers.
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *   Copyright (C) 2011-2012 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
@@ -315,9 +315,18 @@
 #  define SYS_sendto                   (__SYS_network+8)
 #  define SYS_setsockopt               (__SYS_network+9)
 #  define SYS_socket                   (__SYS_network+10)
-#  define SYS_maxsyscall               (__SYS_network+11)
+#  define SYS_nnetsocket               (__SYS_network+11)
 #else
-#  define SYS_maxsyscall               __SYS_network
+#  define SYS_nnetsocket               __SYS_network
+#endif
+
+/* The following is defined only if CONFIG_TASK_NAME_SIZE > 0 */
+
+#if CONFIG_TASK_NAME_SIZE > 0
+#  define SYS_prctl                    (SYS_nnetsocket+0)
+#  define SYS_maxsyscall               (SYS_nnetsocket+1)
+#else
+#  define SYS_maxsyscall               SYS_nnetsocket
 #endif
 
 /* Note that the reported number of system calls does *NOT* include the