Refactor: use FFI/JNI for setUser

[buenaflor]

📜 Description

Part of JNI/FFI refactorings:

💡 Motivation and Context

Partly completes #3204

💚 How did you test it?

Manual, integration tests

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

[cursor]

Bug: Memory Leak in setUser Method

The setUser method creates Objective-C objects (dictionary and cUser) but never releases them. In the Cocoa FFI bindings, objects returned from methods like toNSDictionary() and userWithDictionary() must be explicitly released after use to prevent memory leaks. The method should call .release() on these objects in a finally block or use proper memory management patterns.

 

[buenaflor]

The setUser method creates Objective-C objects (dictionary and cUser) but never releases them

Bugbot is wrong here, it will auto-release when the Dart object is garbage collected (only for objc, in JNI you have to manually release)

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1248.15 ms	1250.48 ms	2.33 ms
Size	5.53 MiB	6.01 MiB	488.10 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
7b21e8b	1256.79 ms	1267.12 ms	10.33 ms
6f47800	1247.52 ms	1259.37 ms	11.85 ms
a10aff4	1241.67 ms	1255.02 ms	13.35 ms
4481076	1256.48 ms	1266.64 ms	10.17 ms
6bcdc99	1257.16 ms	1264.96 ms	7.79 ms
29e8ebe	1260.46 ms	1262.60 ms	2.14 ms
827bf09	1261.86 ms	1276.41 ms	14.55 ms
192b44c	1269.08 ms	1275.52 ms	6.44 ms
54acf91	1257.65 ms	1277.96 ms	20.31 ms
73a3c38	1263.37 ms	1277.90 ms	14.53 ms

App size

Revision	Plain	With Sentry	Diff
7b21e8b	5.53 MiB	6.00 MiB	479.96 KiB
6f47800	7.86 MiB	9.44 MiB	1.58 MiB
a10aff4	5.53 MiB	6.00 MiB	486.71 KiB
4481076	7.86 MiB	9.44 MiB	1.58 MiB
6bcdc99	5.53 MiB	6.00 MiB	479.95 KiB
29e8ebe	5.53 MiB	6.01 MiB	488.12 KiB
827bf09	7.86 MiB	9.44 MiB	1.58 MiB
192b44c	5.53 MiB	5.96 MiB	444.33 KiB
54acf91	20.70 MiB	22.46 MiB	1.75 MiB
73a3c38	7.86 MiB	9.44 MiB	1.58 MiB

Previous results on branch: enh/ffi-jni-set-user

Startup times

Revision	Plain	With Sentry	Diff
7a06bf5	1258.14 ms	1254.44 ms	-3.71 ms
773a959	1230.90 ms	1234.00 ms	3.10 ms
0cfd83f	1266.21 ms	1262.47 ms	-3.74 ms
e99dc61	1257.67 ms	1263.78 ms	6.10 ms
0319d40	1265.59 ms	1266.53 ms	0.94 ms
5ef5a4a	1268.94 ms	1276.78 ms	7.84 ms
21d97b1	1266.02 ms	1266.84 ms	0.82 ms
a9db6e3	1235.54 ms	1244.40 ms	8.86 ms
fff6d2e	1252.47 ms	1254.47 ms	2.00 ms
bf7b3dc	1240.61 ms	1235.23 ms	-5.38 ms

App size

Revision	Plain	With Sentry	Diff
7a06bf5	5.53 MiB	6.00 MiB	486.54 KiB
773a959	5.53 MiB	6.00 MiB	485.62 KiB
0cfd83f	5.53 MiB	6.01 MiB	487.42 KiB
e99dc61	5.53 MiB	6.00 MiB	486.45 KiB
0319d40	5.53 MiB	6.00 MiB	486.54 KiB
5ef5a4a	5.53 MiB	6.00 MiB	486.45 KiB
21d97b1	5.53 MiB	6.00 MiB	486.45 KiB
a9db6e3	5.53 MiB	6.01 MiB	488.10 KiB
fff6d2e	5.53 MiB	6.00 MiB	486.52 KiB
bf7b3dc	5.53 MiB	6.00 MiB	485.63 KiB

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	386.87 ms	392.98 ms	6.10 ms
Size	13.93 MiB	15.06 MiB	1.13 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
cf443d2	464.64 ms	479.04 ms	14.40 ms
2d34233	470.54 ms	558.90 ms	88.36 ms
9b99523	456.91 ms	490.55 ms	33.64 ms
0fb45d0	482.79 ms	554.02 ms	71.23 ms
aeb02f2	373.84 ms	437.00 ms	63.16 ms
eca355d	485.50 ms	569.85 ms	84.35 ms
ad121c0	353.85 ms	358.80 ms	4.95 ms
7cfbbd6	499.69 ms	592.24 ms	92.55 ms
75284dc	512.39 ms	530.87 ms	18.48 ms
fd88186	422.07 ms	469.10 ms	47.03 ms

App size

Revision	Plain	With Sentry	Diff
cf443d2	13.93 MiB	15.00 MiB	1.06 MiB
2d34233	6.54 MiB	7.55 MiB	1.01 MiB
9b99523	6.54 MiB	7.69 MiB	1.15 MiB
0fb45d0	6.54 MiB	7.70 MiB	1.17 MiB
aeb02f2	6.54 MiB	7.69 MiB	1.15 MiB
eca355d	6.54 MiB	7.70 MiB	1.16 MiB
ad121c0	13.93 MiB	15.06 MiB	1.13 MiB
7cfbbd6	6.54 MiB	7.70 MiB	1.17 MiB
75284dc	13.93 MiB	14.93 MiB	1.00 MiB
fd88186	13.93 MiB	15.00 MiB	1.06 MiB

Previous results on branch: enh/ffi-jni-set-user

Startup times

Revision	Plain	With Sentry	Diff
0319d40	486.80 ms	487.94 ms	1.14 ms
21d97b1	640.64 ms	646.81 ms	6.17 ms
5ef5a4a	476.94 ms	474.66 ms	-2.28 ms
a9db6e3	373.33 ms	371.28 ms	-2.05 ms
e99dc61	380.87 ms	370.87 ms	-10.00 ms
0cfd83f	493.25 ms	500.34 ms	7.09 ms
7a06bf5	445.70 ms	440.87 ms	-4.83 ms
fff6d2e	498.86 ms	520.20 ms	21.34 ms
bf7b3dc	525.71 ms	529.60 ms	3.89 ms
773a959	406.41 ms	414.14 ms	7.73 ms

App size

Revision	Plain	With Sentry	Diff
0319d40	13.93 MiB	15.06 MiB	1.13 MiB
21d97b1	13.93 MiB	15.06 MiB	1.13 MiB
5ef5a4a	13.93 MiB	15.06 MiB	1.13 MiB
a9db6e3	13.93 MiB	15.06 MiB	1.13 MiB
e99dc61	13.93 MiB	15.06 MiB	1.13 MiB
0cfd83f	13.93 MiB	15.06 MiB	1.13 MiB
7a06bf5	13.93 MiB	15.06 MiB	1.13 MiB
fff6d2e	13.93 MiB	15.06 MiB	1.13 MiB
bf7b3dc	13.93 MiB	15.06 MiB	1.13 MiB
773a959	13.93 MiB	15.06 MiB	1.13 MiB