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Re: [Qemu-devel] [PATCH v3] Sort the help info shown in monitor at runti


From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH v3] Sort the help info shown in monitor at runtime
Date: Tue, 01 Nov 2011 17:21:13 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.21) Gecko/20110831 Lightning/1.0b2 Thunderbird/3.1.13

On 10/11/2011 10:32 PM, Wayne Xia wrote:
This patch would try sort the command list in monitor at runtime. As a result,
command help and help info would show a more friendly sorted command list.
For eg:
(qemu)help
acl_add
acl_policy
acl_remove
acl_reset
acl_show
balloon
block_passwd
...
the command list is sorted.

v3: using qsort function to sort the command list.

Signed-off-by: Wayne Xia<address@hidden>

Applied.  Thanks.

Regards,

Anthony Liguori

---
  monitor.c |   30 ++++++++++++++++++++++++++----
  1 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/monitor.c b/monitor.c
index 31b212a..a172167 100644
--- a/monitor.c
+++ b/monitor.c
@@ -195,8 +195,8 @@ static inline int mon_print_count_get(const Monitor *mon) { 
return 0; }

  static QLIST_HEAD(mon_list, Monitor) mon_list;

-static const mon_cmd_t mon_cmds[];
-static const mon_cmd_t info_cmds[];
+static mon_cmd_t mon_cmds[];
+static mon_cmd_t info_cmds[];

  static const mon_cmd_t qmp_cmds[];
  static const mon_cmd_t qmp_query_cmds[];
@@ -2726,13 +2726,14 @@ int monitor_get_fd(Monitor *mon, const char *fdname)
      return -1;
  }

-static const mon_cmd_t mon_cmds[] = {
+/* mon_cmds and info_cmds would be sorted at runtime */
+static mon_cmd_t mon_cmds[] = {
  #include "hmp-commands.h"
      { NULL, NULL, },
  };

  /* Please update hmp-commands.hx when adding or changing commands */
-static const mon_cmd_t info_cmds[] = {
+static mon_cmd_t info_cmds[] = {
      {
          .name       = "version",
          .args_type  = "",
@@ -5068,6 +5069,25 @@ static void monitor_event(void *opaque, int event)
      }
  }

+static int
+compare_mon_cmd(const void *a, const void *b)
+{
+    return strcmp(((const mon_cmd_t *)a)->name,
+            ((const mon_cmd_t *)b)->name);
+}
+
+static void sortcmdlist(void)
+{
+    int array_num;
+    int elem_size = sizeof(mon_cmd_t);
+
+    array_num = sizeof(mon_cmds)/elem_size-1;
+    qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
+
+    array_num = sizeof(info_cmds)/elem_size-1;
+    qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
+}
+

  /*
   * Local variables:
@@ -5110,6 +5130,8 @@ void monitor_init(CharDriverState *chr, int flags)
      QLIST_INSERT_HEAD(&mon_list, mon, entry);
      if (!default_mon || (flags&  MONITOR_IS_DEFAULT))
          default_mon = mon;
+
+    sortcmdlist();
  }

  static void bdrv_password_cb(Monitor *mon, const char *password, void *opaque)




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