Toward resurrecting ctrl feature to give runtime info about stuff that

isn't in the DB.  Step one: comment out the stuff that doesn't compile
and add ability to print all registered devices with their ages.

xwords4/relay/Makefile

@@ -19,22 +19,23 @@
 CXX = g++
 CC=$(CXX)
 SRC = \
+	addrinfo.cpp \
+	cidlock.cpp \
 	configs.cpp \
 	cref.cpp \
 	crefmgr.cpp \
+	ctrl.cpp \
 	dbmgr.cpp \
+	devmgr.cpp \
 	http.cpp \
 	lstnrmgr.cpp \
 	permid.cpp \
 	states.cpp \
 	timermgr.cpp \
 	tpool.cpp \
-	cidlock.cpp \
-	addrinfo.cpp \
-	devmgr.cpp \
-	udpqueue.cpp \
 	udpack.cpp \
 	udpager.cpp \
+	udpqueue.cpp \
 	xwrelay.cpp \
 
 # STATIC ?= -static

xwords4/relay/ctrl.cpp

@@ -47,6 +47,7 @@
 #include "configs.h"
 #include "lstnrmgr.h"
 #include "tpool.h"
+#include "devmgr.h"
 
 #define MAX_ARGS 10
 
@@ -67,11 +68,11 @@ pthread_mutex_t g_ctrlSocksMutex = PTHREAD_MUTEX_INITIALIZER;
 
 static bool cmd_quit( int socket, const char** args );
 static bool cmd_print( int socket, const char** args );
-static bool cmd_lock( int socket, const char** args );
+/* static bool cmd_lock( int socket, const char** args ); */
 static bool cmd_help( int socket, const char** args );
 static bool cmd_start( int socket, const char** args );
 static bool cmd_stop( int socket, const char** args );
-static bool cmd_kill_eject( int socket, const char** args );
+/* static bool cmd_kill_eject( int socket, const char** args ); */
 static bool cmd_get( int socket, const char** args );
 static bool cmd_set( int socket, const char** args );
 static bool cmd_shutdown( int socket, const char** args );
@@ -123,11 +124,11 @@ print_to_sock( int sock, bool addCR, const char* what, ... )
 static const FuncRec gFuncs[] = {
     { "?", cmd_help },
     { "crash", cmd_crash },
-    { "eject", cmd_kill_eject },
+    /* { "eject", cmd_kill_eject }, */
     { "get", cmd_get },
     { "help", cmd_help },
-    { "kill", cmd_kill_eject },
-    { "lock", cmd_lock },
+    /* { "kill", cmd_kill_eject }, */
+    /* { "lock", cmd_lock }, */
     { "print", cmd_print },
     { "quit", cmd_quit },
     { "rev", cmd_rev },
@@ -182,6 +183,7 @@ cmd_stop( int socket, const char** args )
     return false;
 }
 
+#if 0
 static bool
 cmd_kill_eject( int socket, const char** args )
 {
@@ -226,6 +228,7 @@ cmd_kill_eject( int socket, const char** args )
     }
     return false;
 } /* cmd_kill_eject */
+#endif
 
 static bool
 cmd_get( int socket, const char** args )
@@ -441,6 +444,7 @@ print_cookies( int socket, const char* cookie, const char* connName )
     }
 }
 
+#if 0
 static void
 print_socket_info( int out, int which )
 {
@@ -448,17 +452,18 @@ print_socket_info( int out, int which )
     CRefMgr::Get()->PrintSocketInfo( which, s );
     print_to_sock( out, 1, s.c_str() );
 }
+#endif
 
 static void
 print_sockets( int out, int sought )
 {
-    SocketsIterator iter = CRefMgr::Get()->MakeSocketsIterator();
-    int sock;
-    while ( (sock = iter.Next()) != 0 ) {
-        if ( sought == 0 || sought == sock ) {
-            print_socket_info( out, sock );
-        }
-    }
+    /* SocketsIterator iter = CRefMgr::Get()->MakeSocketsIterator(); */
+    /* int sock; */
+    /* while ( (sock = iter.Next()) != 0 ) { */
+    /*     if ( sought == 0 || sought == sock ) { */
+    /*         print_socket_info( out, sock ); */
+    /*     } */
+    /* } */
 }
 
 static bool
@@ -488,6 +493,13 @@ cmd_print( int socket, const char** args )
             print_sockets( socket, atoi(args[3]) );
             found = true;
         }
+    } else if ( 0 == strcmp( "dev", args[1] ) ) {
+        if ( 0 == strcmp( "all", args[2] ) ) {
+            string str;
+            DevMgr::Get()->printDevices( str );
+            print_to_sock( socket, true, str.c_str() );
+            found = true;
+        }
     }
 
     if ( !found ) {
@@ -496,14 +508,16 @@ cmd_print( int socket, const char** args )
             "  %s cref name <name>\n"
             "  %s cref connName <name>\n"
             "  %s cref id <id>\n"
+            "  %s dev all -- list all known devices (by how recently connected)\n"
             "  %s socket all\n"
             "  %s socket <num>  -- print info about crefs and sockets";
-        print_to_sock( socket, true, str, 
-                       args[0], args[0], args[0], args[0], args[0], args[0] );
+        print_to_sock( socket, true, str, args[0], args[0], args[0], 
+                       args[0], args[0], args[0], args[0] );
     }
     return false;
 } /* cmd_print */
 
+#if 0
 static bool
 cmd_lock( int socket, const char** args )
 {
@@ -519,6 +533,7 @@ cmd_lock( int socket, const char** args )
     
     return 0;
 } /* cmd_lock */
+#endif
 
 static bool
 cmd_help( int socket, const char** args )

xwords4/relay/devmgr.cpp

@@ -19,6 +19,7 @@
  */
 
 #include <glib.h>
+#include <algorithm>
 
 #include "devmgr.h"
 #include "mlock.h"
@@ -60,6 +61,7 @@ DevMgr::Remember( DevIDRelay devid, const AddrInfo::AddrUnion* saddr )
             result.first->second = rec;
         }
 
+        // Don't think we need m_addrDevMap anymore
         map<AddrInfo::AddrUnion, DevIDRelay>::iterator iter = 
             m_addrDevMap.find(*saddr); 
         if ( m_addrDevMap.end() != iter && devid != iter->second ) {
@@ -100,3 +102,40 @@ DevMgr::get( DevIDRelay devid )
     return result;
 }
 
+// Print info about every device, ordered by how old they are (how long since
+// last remembered).  Build a separate array with the mutex held, then release
+// it, so that as much work as possible is done on the calling thread without
+// holding up more important stuff.
+void
+DevMgr::printDevices( string& str )
+{
+    map<uint32_t, DevIDRelay> agedDevs;
+    {
+        MutexLock ml( &m_mapLock );
+        map<DevIDRelay,UDPAddrRec>::const_iterator iter;
+        for ( iter = m_devAddrMap.begin(); iter != m_devAddrMap.end(); ++iter ) {
+            DevIDRelay devid = iter->first;
+            uint32_t added = iter->second.m_added;
+            agedDevs.insert( pair<uint32_t, DevIDRelay>(added, devid) );
+        }
+    }
+
+    // Now sort by age and print
+    vector<uint32_t> keys;
+    map<uint32_t, DevIDRelay>::const_iterator iter1;
+    for ( iter1 = agedDevs.begin(); agedDevs.end() != iter1; ++iter1 ) {
+        keys.push_back( iter1->first );
+    }
+
+    std::sort( keys.begin(), keys.end() );
+
+    time_t now = time(NULL);
+    vector<uint32_t>::const_iterator keysIter;
+    for ( keysIter = keys.begin(); keys.end() != keysIter; ++keysIter ) {
+        uint32_t age = *keysIter;
+        DevIDRelay devid = agedDevs.find( age )->second;
+        age = now - age;
+        string_printf( str, "devid: %d; age: %d seconds\n", devid, age );
+    }
+
+}

xwords4/relay/devmgr.h

@@ -35,6 +35,8 @@ class DevMgr {
     void Remember( DevIDRelay devid, const AddrInfo* addr );
     const AddrInfo::AddrUnion* get( DevIDRelay devid );
 
+    void printDevices( string& str );
+
  private:
     DevMgr() { pthread_mutex_init( &m_mapLock, NULL ); }
     /* destructor's never called.... 

xwords4/relay/xwrelay.cpp

@@ -1537,7 +1537,7 @@ read_udp_packet( int udpsock )
 
 /* From stack overflow, toward a snprintf with an expanding buffer.
  */
-void
+string&
 string_printf( string& str, const char* fmt, ... )
 {
     const int origsiz = str.size();
@@ -2042,8 +2042,7 @@ main( int argc, char** argv )
                 }
             }
             if ( FD_ISSET( g_control, &rfds ) ) {
-                assert(0);      // not working; don't use until fixed
-                // run_ctrl_thread( g_control );
+                run_ctrl_thread( g_control );
                 --retval;
             }
             if ( -1 != g_udpsock && FD_ISSET( g_udpsock, &rfds ) ) {

xwords4/relay/xwrelay_priv.h

@@ -58,7 +58,7 @@ int GetNSpawns(void);
 
 int make_socket( unsigned long addr, unsigned short port );
 
-void string_printf( std::string& str, const char* fmt, ... );
+std::string& string_printf( std::string& str, const char* fmt, ... );
 
 int read_packet( int sock, unsigned char* buf, int buflen );