GP-6350: You can now set Ghidra Java options via an assortment of environment variables

Ghidra/RuntimeScripts/Linux/support/analyzeHeadless

@@ -16,6 +16,14 @@ MAXMEM_DEFAULT=2G
 GHIDRA_MAXMEM=${GHIDRA_MAXMEM:=${MAXMEM_DEFAULT}}
 GHIDRA_HEADLESS_MAXMEM=${GHIDRA_HEADLESS_MAXMEM:=${GHIDRA_MAXMEM}}
 
+# 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 -XX:CICompilerCount=2 -Djava.awt.headless=true"
+
+# Apply Java options from externally set environment variables
+VMARG_LIST="${VMARG_LIST} ${GHIDRA_JAVA_OPTIONS} ${GHIDRA_HEADLESS_JAVA_OPTIONS}"
+
 # Launch mode can be changed to one of the following: fg, debug, debug-suspend
 LAUNCH_MODE=fg
 
@@ -23,11 +31,6 @@ LAUNCH_MODE=fg
 # NOTE: This variable is ignored if not launching in a debugging mode.
 DEBUG_ADDRESS=127.0.0.1:13002
 
-# 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 -XX:CICompilerCount=2 -Djava.awt.headless=true "
-
 # Resolve symbolic link if present and get the directory this script lives in.
 # NOTE: "readlink -f" is best but works on Linux only, "readlink" will only work if your PWD
 # contains the link you are calling (which is the best we can do on macOS), and the "echo" is the 

Ghidra/RuntimeScripts/Linux/support/bsim

@@ -13,11 +13,15 @@ MAXMEM_DEFAULT=
 GHIDRA_MAXMEM=${GHIDRA_MAXMEM:=${MAXMEM_DEFAULT}}
 GHIDRA_BSIM_MAXMEM=${GHIDRA_BSIM_MAXMEM:=${GHIDRA_MAXMEM}}
 
+# Force Java headless mode
+VMARG_LIST="-Djava.awt.headless=true"
+
+# Apply Java options from externally set environment variables
+VMARG_LIST="${VMARG_LIST} ${GHIDRA_JAVA_OPTIONS} ${GHIDRA_BSIM_JAVA_OPTIONS}"
+
 # launch mode  (fg, bg, debug, debug-suspend)
 LAUNCH_MODE=fg
 
-VMARG_LIST="-Djava.awt.headless=true "
-
 # Resolve symbolic link if present and get the directory this script lives in.
 # NOTE: "readlink -f" is best but works on Linux only, "readlink" will only work if your PWD
 # contains the link you are calling (which is the best we can do on macOS), and the "echo" is the 

Ghidra/RuntimeScripts/Linux/support/ghidraDebug

@@ -15,6 +15,9 @@ MAXMEM_DEFAULT=
 GHIDRA_MAXMEM=${GHIDRA_MAXMEM:=${MAXMEM_DEFAULT}}
 GHIDRA_GUI_MAXMEM=${GHIDRA_GUI_MAXMEM:=${GHIDRA_MAXMEM}}
 
+# Apply Java options from externally set environment variables
+VMARG_LIST="${GHIDRA_JAVA_OPTIONS} ${GHIDRA_GUI_JAVA_OPTIONS} "
+
 # Debug launch mode can be changed to one of the following: debug, debug-suspend
 LAUNCH_MODE=debug
 
@@ -31,4 +34,4 @@ SCRIPT_DIR="${SCRIPT_FILE%/*}"
 
 # Launch Ghidra in debug mode
 # DEBUG_ADDRESS set via environment for launch.sh
-DEBUG_ADDRESS=${DEBUG_ADDRESS} "${SCRIPT_DIR}"/launch.sh "${LAUNCH_MODE}" jdk Ghidra "${GHIDRA_GUI_MAXMEM}" "" ghidra.GhidraRun "$@"
+DEBUG_ADDRESS=${DEBUG_ADDRESS} "${SCRIPT_DIR}"/launch.sh "${LAUNCH_MODE}" jdk Ghidra "${GHIDRA_GUI_MAXMEM}" "${VMARG_LIST}" ghidra.GhidraRun "$@"

Ghidra/RuntimeScripts/Linux/support/jshellRun

@@ -15,6 +15,9 @@ MAXMEM_DEFAULT=
 GHIDRA_MAXMEM=${GHIDRA_MAXMEM:=${MAXMEM_DEFAULT}}
 GHIDRA_JSHELL_MAXMEM=${GHIDRA_JSHELL_MAXMEM:=${GHIDRA_MAXMEM}}
 
+# Apply Java options from externally set environment variables
+VMARG_LIST="${GHIDRA_JAVA_OPTIONS} ${GHIDRA_JSHELL_JAVA_OPTIONS} "
+
 # Resolve symbolic link if present and get the directory this script lives in.
 # NOTE: "readlink -f" is best but works on Linux only, "readlink" will only work if your PWD
 # contains the link you are calling (which is the best we can do on macOS), and the "echo" is the 
@@ -23,4 +26,4 @@ SCRIPT_FILE="$(readlink -f "$0" 2>/dev/null || readlink "$0" 2>/dev/null || echo
 SCRIPT_DIR="${SCRIPT_FILE%/*}"
 
 # Launch Ghidra
-"${SCRIPT_DIR}"/launch.sh fg jdk Ghidra-JShell "${GHIDRA_JSHELL_MAXMEM}" "" ghidra.JShellRun "$@"
+"${SCRIPT_DIR}"/launch.sh fg jdk Ghidra-JShell "${GHIDRA_JSHELL_MAXMEM}" "${VMARG_LIST}" ghidra.JShellRun "$@"

Ghidra/RuntimeScripts/Linux/support/jythonRun

@@ -15,6 +15,14 @@ MAXMEM_DEFAULT=
 GHIDRA_MAXMEM=${GHIDRA_MAXMEM:=${MAXMEM_DEFAULT}}
 GHIDRA_JYTHON_MAXMEM=${GHIDRA_JYTHON_MAXMEM:=${GHIDRA_MAXMEM}}
 
+# Limit the # of garbage collection and JIT compiler threads in case many python
+# 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 -XX:CICompilerCount=2 -Djava.awt.headless=true"
+
+# Apply Java options from externally set environment variables
+VMARG_LIST="${VMARG_LIST} ${GHIDRA_JAVA_OPTIONS} ${GHIDRA_JYTHON_JAVA_OPTIONS}"
+
 # Launch mode can be changed to one of the following: fg, debug, debug-suspend
 LAUNCH_MODE=fg
 
@@ -22,15 +30,6 @@ LAUNCH_MODE=fg
 # NOTE: This variable is ignored if not launching in a debugging mode.
 DEBUG_ADDRESS=127.0.0.1:13002
 
-# Limit the # of garbage collection and JIT compiler threads in case many python
-# 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:CICompilerCount=2 "
-
-# Prevent the shell losing focus when Ghidra initializes
-VMARG_LIST+="-Djava.awt.headless=true "
-
 # Resolve symbolic link if present and get the directory this script lives in.
 # NOTE: "readlink -f" is best but works on Linux only, "readlink" will only work if your PWD
 # contains the link you are calling (which is the best we can do on macOS), and the "echo" is the