GenTL Producer Memory Leak — ImageAcquirer create/destroy cycle

[jsiverskog]

Describe the Issue
the mv_gen_tl_producer leaks approximately 10 MB of native memory every time an ImageAcquirer is created and destroyed. memory is never reclaimed.

To Reproduce
run the below code.

Sample Code
I can show a piece of code that demonstrates the reported phenomenon:

• Yes
• No

import resource
from harvesters.core import Harvester

def rss_mb():
    return resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024

h = Harvester()
h.add_file("file.cti")
h.update()

for i in range(20):
    before = rss_mb()
    ia = h.create(0)
    ia.start()
    with ia.fetch(timeout=2) as buf:
        pass
    ia.stop()
    ia.destroy()
    after = rss_mb()
    print(f"iter={i} rss=+{after - before:.1f} MB  total={after:.1f} MB")

If applicable, please paste the actual output (its whole traceback, etc) here:

iter=0 rss=+27.3 MB  total=80.8 MB
iter=1 rss=+13.2 MB  total=93.9 MB
iter=2 rss=+8.3 MB  total=102.2 MB
iter=3 rss=+8.5 MB  total=110.7 MB
iter=4 rss=+8.2 MB  total=118.9 MB
iter=5 rss=+8.2 MB  total=127.0 MB
iter=6 rss=+6.2 MB  total=133.2 MB
iter=7 rss=+8.1 MB  total=141.3 MB
iter=8 rss=+8.2 MB  total=149.4 MB
iter=9 rss=+8.2 MB  total=157.6 MB
iter=10 rss=+8.2 MB  total=165.8 MB
iter=11 rss=+8.2 MB  total=173.9 MB
iter=12 rss=+8.2 MB  total=182.1 MB
iter=13 rss=+4.7 MB  total=186.8 MB
iter=14 rss=+8.5 MB  total=195.3 MB
iter=15 rss=+8.2 MB  total=203.5 MB
iter=16 rss=+8.2 MB  total=211.6 MB
iter=17 rss=+8.2 MB  total=219.8 MB
iter=18 rss=+8.2 MB  total=228.0 MB
iter=19 rss=+5.2 MB  total=233.1 MB

Expected Behavior
memory usage should stabilize and not increase.

Configuration

• OS: Linux 6.12.75+rpt-rpi-2712 [arm64]
• Python: 3.12.13
• Harvester: 1.4.3
• GenTL Producer: BAI BVA - Balluff Impact Acquire 3.6.3
• Camera: Hikrobot MV-CS050-10UM

Reproducibility

This phenomenon can be stably reproduced:

• Yes
• No.

i don't know where things happen, perhaps this issue is in the gentl producer?

• I've read the Harvester FAQ page.