Add mem command to NSH

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@843 42af7a65-404d-4744-a932-0658087f49c3

ChangeLog

@@ -423,6 +423,7 @@
 	* NSH: Add cd and pwd commands and current working directory to all NSH
 	  commands that refer to paths.
 	* Fix errors and warnings introduced into Linux sim build because of recent
-	  Cygwin-related changes
+	  Cygwin-based sim changes
+	* NSH: Add mem command to display heap usage
 
 

Documentation/NuttX.html

@@ -1057,7 +1057,8 @@ nuttx-0.3.13 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 	* NSH: Add cd and pwd commands and current working directory to all NSH
 	  commands that refer to paths.
 	* Fix errors and warnings introduced into Linux sim build because of recent
-	  Cygwin-related changes
+	  Cygwin-based sim changes
+	* NSH: Add mem command to display heap usage
 
 pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 

arch/sim/src/up_initialize.c

@@ -41,6 +41,7 @@
 #include <sys/types.h>
 #include <nuttx/arch.h>
 #include <nuttx/fs.h>
+#include <debug.h>
 #include "up_internal.h"
 
 /****************************************************************************

examples/README.txt

@@ -47,6 +47,7 @@ examples/nsh
   ifconfig   CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS > 0
   ls         CONFIG_NFILE_DESCRIPTORS > 0
   mb,mh,mw   ---
+  mem        ---
   mkdir      !CONFIG_DISABLE_MOUNTPOINT && CONFIG_NFILE_DESCRIPTORS > 0
   mkfatfs    !CONFIG_DISABLE_MOUNTPOINT && CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_FS_FAT
   mkfifo     !CONFIG_DISABLE_MOUNTPOINT && CONFIG_NFILE_DESCRIPTORS > 0

examples/nsh/nsh.h

@@ -239,6 +239,7 @@ extern int cmd_exec(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
 extern int cmd_mb(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
 extern int cmd_mh(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
 extern int cmd_mw(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
+extern int cmd_mem(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
 extern int cmd_ps(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
 
 #if CONFIG_NFILE_DESCRIPTORS > 0

examples/nsh/nsh_dbgcmds.c

@@ -277,3 +277,24 @@ int cmd_mw(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
   return ret;
 }
 
+/****************************************************************************
+ * Name: cmd_mem
+ ****************************************************************************/
+
+int cmd_mem(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
+{
+  struct mallinfo mem;
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+  mem = mallinfo();
+#else
+  (void)mallinfo(&mem);
+#endif
+
+  nsh_output(vtbl, "  arena:    %8x\n", mem.arena);
+  nsh_output(vtbl, "  ordblks:  %8d\n", mem.ordblks);
+  nsh_output(vtbl, "  mxordblk: %8x\n", mem.mxordblk);
+  nsh_output(vtbl, "  uordblks: %8x\n", mem.uordblks);
+  nsh_output(vtbl, "  fordblks: %8x\n", mem.fordblks);
+  return OK;
+}

examples/nsh/nsh_main.c

@@ -111,6 +111,7 @@ static const struct cmdmap_s g_cmdmap[] =
   { "ls",       cmd_ls,       1, 5, "[-lRs] <dir-path>" },
 #endif
   { "mb",       cmd_mb,       2, 3, "<hex-address>[=<hex-value>][ <hex-byte-count>]" },
+  { "mem",      cmd_mem,      1, 1, NULL },
 #if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0
   { "mkdir",    cmd_mkdir,    2, 2, "<path>" },
 #ifdef CONFIG_FS_FAT