[GR-18163] Add mx ruby_from_classpath

PullRequest: truffleruby/4558

Author: eregon

mx.truffleruby/mx_truffleruby.py

@@ -84,6 +84,7 @@ def __init__(self):
     def apply(self, config):
         vmArgs, mainClass, mainClassArgs = config
         mx_truffle.enable_truffle_native_access(vmArgs)
+        mx_truffle.enable_sun_misc_unsafe(vmArgs)
         return (vmArgs, mainClass, mainClassArgs)
 
 mx_unittest.register_unittest_config(TruffleRubyUnittestConfig())
@@ -153,6 +154,7 @@ def contents(self, result):
         classpath_deps = [dep for dep in self.subject.buildDependencies if isinstance(dep, mx.ClasspathDependency)]
         jvm_args = [shlex.quote(arg) for arg in mx.get_runtime_jvm_args(classpath_deps)]
         mx_truffle.enable_truffle_native_access(jvm_args)
+        mx_truffle.enable_sun_misc_unsafe(jvm_args)
 
         debug_args = mx.java_debug_args()
         jvm_args.extend(debug_args)
@@ -219,6 +221,7 @@ def ruby_check_heap_dump(input_args, out=None):
     vm_args, truffleruby_args = mx.extract_VM_args(args, useDoubleDash=True, defaultAllVMArgs=False)
     vm_args += mx.get_runtime_jvm_args(dists)
     mx_truffle.enable_truffle_native_access(vm_args)
+    mx_truffle.enable_sun_misc_unsafe(vm_args)
     # vm_args.append("-agentlib:jdwp=transport=dt_socket,server=y,address=8000,suspend=y")
     vm_args.append("org.truffleruby.test.internal.LeakTest")
     out = mx.OutputCapture() if out is None else out
@@ -251,6 +254,19 @@ def ruby_run_ruby(args):
     ruby = join(standalone_home, 'bin/ruby')
     os.execlp(ruby, ruby, *args)
 
+def ruby_run_ruby_from_classpath(args):
+    """run TruffleRuby from the classpath"""
+    dists = ['RUBY_COMMUNITY', 'TRUFFLERUBY-LAUNCHER']
+    if '--skip-build' in args:
+        args.remove('--skip-build')
+    else:
+        mx.command_function('build')(['--dependencies', ','.join(dists)])
+    classpath = mx.classpath(dists)
+    jvm_args = ['-cp', classpath]
+    mx_truffle.enable_truffle_native_access(jvm_args)
+    mx_truffle.enable_sun_misc_unsafe(jvm_args)
+    mx.run_java([*jvm_args, 'org.truffleruby.launcher.RubyLauncher', *args], jdk=jdk, nonZeroIsFatal=True)
+
 def ruby_run_specs(ruby, args):
     with VerboseMx():
         jt('--use', ruby, 'test', 'specs', *args)
@@ -375,6 +391,7 @@ def ruby_maven_deploy_public_repo_dir(args):
 
 mx.update_commands(_suite, {
     'ruby': [ruby_run_ruby, ''],
+    'ruby_from_classpath': [ruby_run_ruby_from_classpath, ''],
     'build_truffleruby': [build_truffleruby, ''],
     'ruby_check_heap_dump': [ruby_check_heap_dump, ''],
     'ruby_testdownstream_aot': [ruby_testdownstream_aot, 'aot_bin'],