Resolve multiple-applet deadlock issue in JNLPClassLoader New lock used for synchronizing JNLPClassLoader#loadClass(String) to avoid deadlock condition when multiple applets are being loaded simultaneously. Regression test included. * netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java: (loadClassLock) private member for locking of loadClass method. (loadClass) synchronizes using new lock rather than instance intrinsic lock to avoid RH976833 deadlock * tests/reproducers/custom/JNLPClassLoaderDeadlock/testcases/JNLPClassLoaderDeadlockTest.java: new test for multiple applet deadlock condition * tests/reproducers/custom/JNLPClassLoaderDeadlock/resources/JNLPClassLoaderDeadlock.html: same * tests/reproducers/custom/JNLPClassLoaderDeadlock/srcs/JNLPClassLoaderDeadlock_1.java: same * tests/reproducers/custom/JNLPClassLoaderDeadlock/srcs/JNLPClassLoaderDeadlock_2.java: same * tests/reproducers/custom/JNLPClassLoaderDeadlock/srcs/Makefile: same

TESTNAME=JNLPClassLoaderDeadlock

SRC_FILES=JNLPClassLoaderDeadlock_1.java JNLPClassLoaderDeadlock_2.java
RESOURCE_FILES=JNLPClassLoaderDeadlock.html
ENTRYPOINT_CLASSES=JNLPClassLoaderDeadlock_1 JNLPClassLoaderDeadlock_2

JAVAC_CLASSPATH=$(TEST_EXTENSIONS_DIR):$(NETX_DIR)/lib/classes.jar
JAVAC=$(BOOT_DIR)/bin/javac
JAR=$(BOOT_DIR)/bin/jar

TMPDIR:=$(shell mktemp -d)

prepare-reproducer:
	echo PREPARING REPRODUCER $(TESTNAME)

	$(JAVAC) -d $(TMPDIR) -classpath $(JAVAC_CLASSPATH) $(SRC_FILES)

	cd ../resources; \
	cp $(RESOURCE_FILES) $(REPRODUCERS_TESTS_SERVER_DEPLOYDIR); \
	cd -; \
	for CLASS in $(ENTRYPOINT_CLASSES); \
	do \
		mv $(TMPDIR)/"$$CLASS.class" $(REPRODUCERS_TESTS_SERVER_DEPLOYDIR); \
	done; \

	echo PREPARED REPRODUCER $(TESTNAME), removing $(TMPDIR)
	rm -rf $(TMPDIR)

clean-reproducer:
	echo NOTHING TO CLEAN FOR $(TESTNAME)