Add support for DragonFlyBSD to memsup

DragonFly was partially supported by os_mon already but when trying to
start the os_mon application it'd crash with an error about an unknown
operating system in memsup. This patch changes memsup to use the FreeBSD
sysctl method to get memory information when on DragonFly.

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/os_mon/src/memsup.erl b/lib/os_mon/src/memsup.erl
index 822e1f939c..6c677fae8e 100644
--- a/lib/os_mon/src/memsup.erl
+++ b/lib/os_mon/src/memsup.erl
@@ -176,6 +176,7 @@ init([]) ->
     PortMode = case OS of
 		   {unix, darwin} -> false;
 		   {unix, freebsd} -> false;
+		   {unix, dragonfly} -> false;
 		   % Linux supports this.
 		   {unix, linux} -> true;
 		   {unix, openbsd} -> true;
@@ -610,6 +611,7 @@ code_change(Vsn, PrevState, "1.8") ->
 	    PortMode = case OS of
 			   {unix, darwin} -> false;
 			   {unix, freebsd} -> false;
+			   {unix, dragonfly} -> false;
 			   {unix, linux} -> false;
 			   {unix, openbsd} -> true;
 			   {unix, sunos} -> true;
@@ -687,6 +689,7 @@ get_os_wordsize({unix, linux})   -> get_os_wordsize_with_uname();
 get_os_wordsize({unix, darwin})  -> get_os_wordsize_with_uname();
 get_os_wordsize({unix, netbsd})  -> get_os_wordsize_with_uname();
 get_os_wordsize({unix, freebsd}) -> get_os_wordsize_with_uname();
+get_os_wordsize({unix, dragonfly}) -> get_os_wordsize_with_uname();
 get_os_wordsize({unix, openbsd}) -> get_os_wordsize_with_uname();
 get_os_wordsize(_)               -> unsupported_os.
 
@@ -736,7 +739,7 @@ get_memory_usage({unix,darwin}) ->
 
 %% FreeBSD: Look in /usr/include/sys/vmmeter.h for the format of struct
 %% vmmeter
-get_memory_usage({unix,freebsd}) ->
+get_memory_usage({unix,OSname}) when OSname == freebsd; OSname == dragonfly ->
     PageSize  = freebsd_sysctl("vm.stats.vm.v_page_size"),
     PageCount = freebsd_sysctl("vm.stats.vm.v_page_count"),
     FreeCount = freebsd_sysctl("vm.stats.vm.v_free_count"),
@@ -779,6 +782,9 @@ get_ext_memory_usage(OS, {Alloc, Total}) ->
 	{unix, freebsd} ->
 	    [{total_memory, Total}, {free_memory, Total-Alloc},
 	     {system_total_memory, Total}];
+	{unix, dragonfly} ->
+	    [{total_memory, Total}, {free_memory, Total-Alloc},
+	     {system_total_memory, Total}];
 	{unix, darwin} ->
 	    [{total_memory, Total}, {free_memory, Total-Alloc},
 	     {system_total_memory, Total}];