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GP-6213: You can now set Ghidra MAXMEM via an assortment of environment

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variables
This commit is contained in:
Ryan Kurtz
2025-12-12 13:00:35 -05:00
parent f6274f373f
commit 082c04c545
13 changed files with 135 additions and 56 deletions
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17
Ghidra/RuntimeScripts/Windows/support/analyzeHeadless.bat
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@@ -18,10 +18,17 @@
@echo off
setlocal
:: Maximum heap memory size. For headless, it is recommended to not use the default value
:: because garbage collection could take too long on systems with a large amount of physical
:: memory.
set MAXMEM=2G
:: Optionally override the default Java heap memory, which is typically 1/4 of system RAM.
:: Supported values are of the regular expression form "\d+[gGmMkK]", allowing the value to be
:: specified in gigabytes, megabytes, or kilobytes (for example: 8G, 4096m, etc).
:: We override the default for headless in case users spin up many headless instances in parallel.
set MAXMEM_DEFAULT=2G
:: Allow the above MAXMEM_DEFAULT to be overridden by externally set environment variables
:: - GHIDRA_MAXMEM: Desired maximum heap memory for all Ghidra instances
:: - GHIDRA_HEADLESS_MAXMEM: Desired maximum heap memory only for headless Ghidra instances
if not defined GHIDRA_MAXMEM set "GHIDRA_MAXMEM=%MAXMEM_DEFAULT%"
if not defined GHIDRA_HEADLESS_MAXMEM set "GHIDRA_HEADLESS_MAXMEM=%GHIDRA_MAXMEM%"
:: Launch mode can be changed to one of the following:
:: fg, debug, debug-suspend
@@ -67,4 +74,4 @@ goto Loop
setlocal DisableDelayedExpansion
call "%SCRIPT_DIR%launch.bat" %LAUNCH_MODE% jdk Ghidra-Headless "%MAXMEM%" "%VMARG_LIST%" ghidra.app.util.headless.AnalyzeHeadless %params%
call "%SCRIPT_DIR%launch.bat" %LAUNCH_MODE% jdk Ghidra-Headless "%GHIDRA_HEADLESS_MAXMEM%" "%VMARG_LIST%" ghidra.app.util.headless.AnalyzeHeadless %params%

15
Ghidra/RuntimeScripts/Windows/support/bsim.bat
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@@ -18,9 +18,16 @@
@echo off
setlocal
:: Maximum heap memory may be changed if default is inadequate. This will generally be up to 1/4 of
:: the physical memory available to the OS. Uncomment MAXMEM setting if non-default value is needed.
::set MAXMEM=2G
:: Optionally override the default Java heap memory, which is typically 1/4 of system RAM.
:: Supported values are of the regular expression form "\d+[gGmMkK]", allowing the value to be
:: specified in gigabytes, megabytes, or kilobytes (for example: 8G, 4096m, etc).
set MAXMEM_DEFAULT=
:: Allow the above MAXMEM_DEFAULT to be overridden by externally set environment variables
:: - GHIDRA_MAXMEM: Desired maximum heap memory for all Ghidra instances
:: - GHIDRA_BSIM_MAXMEM: Desired maximum heap memory only for Ghidra BSim instances
if not defined GHIDRA_MAXMEM set "GHIDRA_MAXMEM=%MAXMEM_DEFAULT%"
if not defined GHIDRA_BSIM_MAXMEM set "GHIDRA_BSIM_MAXMEM=%GHIDRA_MAXMEM%"
:: launch mode (fg, bg, debug, debug-suspend)
set LAUNCH_MODE=fg
@@ -35,4 +42,4 @@ set LAUNCH_MODE=fg
set "LAUNCH_DIR=%~dp0"
set "LAUNCH_DIR=%LAUNCH_DIR:~0,-1%"
call "%LAUNCH_DIR%\launch.bat" %LAUNCH_MODE% jdk BSim "%MAXMEM%" "" ghidra.features.bsim.query.ingest.BSimLaunchable %*
call "%LAUNCH_DIR%\launch.bat" %LAUNCH_MODE% jdk BSim "%GHIDRA_BSIM_MAXMEM%" "" ghidra.features.bsim.query.ingest.BSimLaunchable %*

15
Ghidra/RuntimeScripts/Windows/support/ghidraDebug.bat
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@@ -18,9 +18,16 @@
@echo off
setlocal
:: Maximum heap memory may be changed if default is inadequate. This will generally be up to 1/4 of
:: the physical memory available to the OS. Uncomment MAXMEM setting if non-default value is needed.
::set MAXMEM=2G
:: Optionally override the default Java heap memory, which is typically 1/4 of system RAM.
:: Supported values are of the regular expression form "\d+[gGmMkK]", allowing the value to be
:: specified in gigabytes, megabytes, or kilobytes (for example: 8G, 4096m, etc).
set MAXMEM_DEFAULT=
:: Allow the above MAXMEM_DEFAULT to be overridden by externally set environment variables
:: - GHIDRA_MAXMEM: Desired maximum heap memory for all Ghidra instances
:: - GHIDRA_GUI_MAXMEM: Desired maximum heap memory only for Ghidra GUI instances
if not defined GHIDRA_MAXMEM set "GHIDRA_MAXMEM=%MAXMEM_DEFAULT%"
if not defined GHIDRA_GUI_MAXMEM set "GHIDRA_GUI_MAXMEM=%GHIDRA_MAXMEM%"
:: Debug launch mode can be changed to one of the following:
:: debug, debug-suspend
@@ -30,4 +37,4 @@ set LAUNCH_MODE=debug
:: NOTE: This variable is ignored if not launching in a debugging mode.
set DEBUG_ADDRESS=127.0.0.1:18001
call "%~dp0launch.bat" %LAUNCH_MODE% jdk Ghidra "%MAXMEM%" "" ghidra.GhidraRun %*
call "%~dp0launch.bat" %LAUNCH_MODE% jdk Ghidra "%GHIDRA_GUI_MAXMEM%" "" ghidra.GhidraRun %*

15
Ghidra/RuntimeScripts/Windows/support/jshellRun.bat
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@@ -18,9 +18,16 @@
@echo off
setlocal
:: Maximum heap memory may be changed if default is inadequate. This will generally be up to 1/4 of
:: the physical memory available to the OS. Uncomment MAXMEM setting if non-default value is needed.
::set MAXMEM=2G
:: Optionally override the default Java heap memory, which is typically 1/4 of system RAM.
:: Supported values are of the regular expression form "\d+[gGmMkK]", allowing the value to be
:: specified in gigabytes, megabytes, or kilobytes (for example: 8G, 4096m, etc).
set MAXMEM_DEFAULT=
call "%~dp0launch.bat" fg jdk Ghidra-JShell "%MAXMEM%" "" ghidra.JShellRun %*
:: Allow the above MAXMEM_DEFAULT to be overridden by externally set environment variables
:: - GHIDRA_MAXMEM: Desired maximum heap memory for all Ghidra instances
:: - GHIDRA_JSHELL_MAXMEM: Desired maximum heap memory only for JShell Ghidra instances
if not defined GHIDRA_MAXMEM set "GHIDRA_MAXMEM=%MAXMEM_DEFAULT%"
if not defined GHIDRA_JSHELL_MAXMEM set "GHIDRA_JSHELL_MAXMEM=%GHIDRA_MAXMEM%"
call "%~dp0launch.bat" fg jdk Ghidra-JShell "%GHIDRA_JSHELL_MAXMEM%" "" ghidra.JShellRun %*

18
Ghidra/RuntimeScripts/Windows/support/jythonRun.bat
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@@ -18,12 +18,16 @@
@echo off
setlocal
:: Maximum heap memory size
:: Default for Windows 32-bit is 768M and 64-bit is 1024M
:: Raising the value too high may cause a silent failure where
:: Ghidra fails to launch.
:: Uncomment MAXMEM setting if non-default value is needed
::set MAXMEM=768M
:: Optionally override the default Java heap memory, which is typically 1/4 of system RAM.
:: Supported values are of the regular expression form "\d+[gGmMkK]", allowing the value to be
:: specified in gigabytes, megabytes, or kilobytes (for example: 8G, 4096m, etc).
set MAXMEM_DEFAULT=
:: Allow the above MAXMEM_DEFAULT to be overridden by externally set environment variables
:: - GHIDRA_MAXMEM: Desired maximum heap memory for all Ghidra instances
:: - GHIDRA_JYTHON_MAXMEM: Desired maximum heap memory only for Ghidra Jython instances
if not defined GHIDRA_MAXMEM set "GHIDRA_MAXMEM=%MAXMEM_DEFAULT%"
if not defined GHIDRA_JYTHON_MAXMEM set "GHIDRA_JYTHON_MAXMEM=%GHIDRA_MAXMEM%"
:: Launch mode can be changed to one of the following:
:: fg, debug, debug-suspend
@@ -39,4 +43,4 @@ set DEBUG_ADDRESS=127.0.0.1:13002
set VMARG_LIST=-XX:ParallelGCThreads=2
set VMARG_LIST=%VMARG_LIST% -XX:CICompilerCount=2
call "%~dp0launch.bat" %LAUNCH_MODE% jdk Ghidra-Jython "%MAXMEM%" "%VMARG_LIST%" ghidra.jython.JythonRun %*
call "%~dp0launch.bat" %LAUNCH_MODE% jdk Ghidra-Jython "%GHIDRA_JYTHON_MAXMEM%" "%VMARG_LIST%" ghidra.jython.JythonRun %*

5
Ghidra/RuntimeScripts/Windows/support/sleigh.bat
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@@ -18,7 +18,4 @@
@echo off
setlocal
:: maximum heap memory may be change if inadequate
set MAXMEM=256M
call "%~dp0launch.bat" fg jdk Sleigh "%MAXMEM%" "" ghidra.pcodeCPort.slgh_compile.SleighCompileLauncher %*
call "%~dp0launch.bat" fg jdk Sleigh "" "" ghidra.pcodeCPort.slgh_compile.SleighCompileLauncher %*