objc2_multipeer_connectivity examples or any other "tutorial" resources on memory, NSAutoreleasePool, ... mgmt

[adiibanez]

Made some small steps of progress ... but having some most probably quite basic questions regarding how to use the rust / objc "bridge". Are there any examples available showing how to use NSAutoreleasePool / retained / properly. Preferably mpc related but anything will help.

cargo(34374) MallocStackLogging: could not tag MSL-related memory as no_footprint, so those pages will be included in process footprint - (null)
cargo(34374) MallocStackLogging: stack logs being written to /private/tmp/stack-logs.34374.10516c000.cargo.SYMfJZ.index
cargo(34374) MallocStackLogging: recording malloc and VM allocation stacks to disk using standard recorder
cargo(34374) MallocStackLogging: process 34293 no longer exists, stack logs deleted from /tmp/stack-logs.34293.102d60000.iroh_mpc_discovery.89jxkv.index
objc[34374]: MISSING POOLS: (0x1f310c840) Object 0x6000004ec140 of class _NSSwiftProcessInfo autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
objc[34374]: MISSING POOLS: (0x1f310c840) Object 0x6000011e6960 of class Swift.__SwiftDeferredNSArray autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
cargo(34374) MallocStackLogging: could not tag MSL-related memory as no_footprint, so those pages will be included in process footprint - (null)
cargo(34374) MallocStackLogging: stack logs being written to /private/tmp/stack-logs.34374.1047d4000.cargo.IvGvyC.index
cargo(34374) MallocStackLogging: recording malloc and VM allocation stacks to disk using standard recorder
cargo(34374) MallocStackLogging: stack logs deleted from /tmp/stack-logs.34374.10516c000.cargo.SYMfJZ.index
objc[34374]: MISSING POOLS: (0x1f310c840) Object 0x600002c602c0 of class _NSSwiftProcessInfo autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
objc[34374]: MISSING POOLS: (0x1f310c840) Object 0x60000396f8a0 of class Swift.__SwiftDeferredNSArray autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
   Compiling iroh_mpc_discovery v0.1.0 (/Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/iroh_mpc_discovery)
cargo(34379) MallocStackLogging: turning off stack logging (had been recording malloc and VM allocation stacks to disk using standard recorder)
cargo(34383) MallocStackLogging: turning off stack logging (had been recording malloc and VM allocation stacks to disk using standard recorder)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.16s
     Running `target/debug/iroh_mpc_discovery`
iroh_mpc_discovery(34374) MallocStackLogging: could not tag MSL-related memory as no_footprint, so those pages will be included in process footprint - (null)
iroh_mpc_discovery(34374) MallocStackLogging: stack logs being written to /private/tmp/stack-logs.34374.1028ac000.iroh_mpc_discovery.1u2B5f.index
iroh_mpc_discovery(34374) MallocStackLogging: recording malloc and VM allocation stacks to disk using standard recorder
iroh_mpc_discovery(34374) MallocStackLogging: stack logs deleted from /tmp/stack-logs.34374.1047d4000.cargo.IvGvyC.index
run-mpc.sh: line 5: 34374 Segmentation fault: 11  MallocStackLogging=1 OBJC_DEBUG_MISSING_POOLS=YES RUST_BACKTRACE=full RUST_LOG=trace cargo run

[adiibanez]

https://github.com/adiibanez/iroh_discovery_playground

[madsmtm]

Sorry for the late answer, this must have slipped by my GH notifications.

I tried running the example repo you provided, but once I change to your second main, I'm not getting the crash?

memory, NSAutoreleasePool, ... mgmt

I've been planning a tutorial for a long time, see #494, but am kinda bad at writing that kind of stuff... In any case, you shouldn't need to use autorelease pools, and memory management should be done (fairly) automatically already?