GP-0: Force Java to run in headless mode when Ghidra is launched from

analyzeHeadless script

Ghidra/Framework/Utility/src/main/java/ghidra/Ghidra.java

@@ -41,7 +41,9 @@ public class Ghidra {
 		// fully qualified class name (with . replaced by -). If we don't do this here, the next 
 		// time it gets done is in a new thread, which results in the application name being set to 
 		// "java-lang-thread".
+		if (!Boolean.getBoolean("java.awt.headless")) {
 			Taskbar.isTaskbarSupported();
+		}
 		
 		// Forward args to GhidraLauncher, which will perform the launch
 		GhidraLauncher.launch(args);

Ghidra/RuntimeScripts/Linux/support/analyzeHeadless

@@ -15,10 +15,13 @@ LAUNCH_MODE=fg
 # NOTE: This variable is ignored if not launching in a debugging mode.
 DEBUG_ADDRESS=127.0.0.1:13002
 
+# Run Java in headless mode
+VMARG_LIST="-Djava.awt.headless=true "
+
 # Limit the # of garbage collection and JIT compiler threads in case many headless
 # instances are run in parallel.  By default, Java will assign one thread per core
 # which does not scale well on servers with many cores.
-VMARG_LIST="-XX:ParallelGCThreads=2 "
+VMARG_LIST+="-XX:ParallelGCThreads=2 "
 VMARG_LIST+="-XX:CICompilerCount=2 "
 
 # Resolve symbolic link if present and get the directory this script lives in.

Ghidra/RuntimeScripts/Windows/support/analyzeHeadless.bat

@@ -16,10 +16,13 @@ set LAUNCH_MODE=fg
 :: NOTE: This variable is ignored if not launching in a debugging mode.
 set DEBUG_ADDRESS=127.0.0.1:13002
 
+:: Run Java in headless mode
+set VMARG_LIST=-Djava.awt.headless=true
+
 :: Limit the # of garbage collection and JIT compiler threads in case many headless
 :: instances are run in parallel.  By default, Java will assign one thread per core
 :: which does not scale well on servers with many cores.
-set VMARG_LIST=-XX:ParallelGCThreads=2
+set VMARG_LIST=%VMARG_LIST% -XX:ParallelGCThreads=2
 set VMARG_LIST=%VMARG_LIST% -XX:CICompilerCount=2
 
 :: Store current path (%0 gets modified below by SHIFT)