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from jpype import *
import time
remote_pack="c:/tools/netbeean-remote-pack"
profiler_options = [
"-agentpath:%s/lib/deployed/jdk15/windows/profilerinterface.dll=%s/lib,5140" % (remote_pack, remote_pack)
]
options = [
#'-verbose:gc',
'-Xmx64m',
'-Djava.class.path=classes'
] #+ profiler_options
cnt = 0
#setUsePythonThreadForDeamon(True)
startJVM(getDefaultJVMPath(), *options)
class MyStr(str):
def __init__ (self, val):
str.__init__(self, val)
global cnt
cnt += 1
print 'created string', cnt
def __del__(self):
global cnt
cnt -= 1
print 'deleted string', cnt
receive = JClass("jpype.nio.NioReceive")
while True:
# everything runs great with this line uncommented
#p = JString('5' * 1024 * 1024)
# with this line uncommented, the python strings aren't GC'd
p = java.lang.StringBuffer(MyStr('5' * 1024 * 1024))
# with this line uncommented, the JVM throws an OutOfMemoryError (not GC'ing the proxied java objects?),
# but the python strings are being GC'd
#p = java.lang.StringBuffer(JString(MyStr('5' * 1024 * 1024)))
#
# forget the direct buffer for now....
#
buf = nio.convertToDirectBuffer(MyStr('5' * 1024 * 1024 * 5))
try :
receive.receiveBufferWithException(buf)
except :
pass
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