[SERVER] Get rid of alt-servers thread, per-uplink rtt history

Alt-Server checks are now run using the threadpool, so we don't need a
queue and dedicated thread anymore. The rtt history is now kept per
uplink, so many uplinks won't overwhelm the history, making its time
window very short.
Also the fail counter is now split up; a global one for when the server
actually isn't reachable, a local (per-uplink) one for when the server
is reachable but doesn't serve the requested image.

1 files changed, 5 insertions, 3 deletions

diff --git a/src/server/server.c b/src/server/server.c
index 838aec2..640048a 100644
--- a/src/server/server.c
+++ b/src/server/server.c
@@ -121,9 +121,6 @@ void dnbd3_cleanup()
 	// Disable threadpool
 	threadpool_close();
 
-	// Terminate the altserver checking thread
-	altservers_shutdown();
-
 	// Terminate all uplinks
 	image_killUplinks();
 
@@ -198,6 +195,11 @@ int main(int argc, char *argv[])
 		case LONGOPT_CRC4:
 			return image_generateCrcFile( optarg ) ? 0 : EXIT_FAILURE;
 		case LONGOPT_ASSERT:
+			printf( "Testing use after free:\n" );
+			volatile char * volatile test = malloc( 10 );
+			test[0] = 1;
+			free( test );
+			test[1] = 2;
 			printf( "Testing a failing assertion:\n" );
 			assert( 4 == 5 );
 			printf( "Assertion 4 == 5 seems to hold. ;-)\n" );