350f597250
We're using two different functions to atomically decrement a reference count, the native `atomic_fetch_sub` and the managed `Interlocked.Decrement`. Unfortunately the return value is not the same: `atomic_fetch_sub` returns the original value before the subtraction, while `Interlocked.Decrement` returns the subtracted value, while our code assumed the functions behaved the same. This resulted in a memory leak, because we'd incorrectly expect `0` to be returned from `atomic_fetch_sub` when the reference count reaches zero, and thus not detect when the descriptor a block should be freed. The fix is to update the expected return value from `atomic_fetch_sub` to be `1` instead of `0`. Fixes https://github.com/xamarin/xamarin-macios/issues/20503. |
||
|---|---|---|
| .. | ||
| xamarin | ||
| .gitignore | ||
| COOP.md | ||
| Delegates.cs.t4 | ||
| EXCEPTIONS.md | ||
| Makefile | ||
| README.md | ||
| Xamarin.framework-iphoneos.Info.plist | ||
| Xamarin.framework-iphonesimulator.Info.plist | ||
| Xamarin.framework-tvos.Info.plist | ||
| Xamarin.framework-tvsimulator.Info.plist | ||
| Xamarin.framework-watchos.Info.plist | ||
| Xamarin.framework-watchsimulator.Info.plist | ||
| bindings-generator.cs | ||
| bindings-generator.csproj | ||
| bindings.h | ||
| bindings.m | ||
| coreclr-bridge.m | ||
| delegates.h.t4 | ||
| delegates.inc.t4 | ||
| delegates.t4 | ||
| exports.t4 | ||
| extension-main.m | ||
| frameworks.h | ||
| launcher.h | ||
| launcher.m | ||
| libmonotouch.csproj | ||
| libxammac.csproj | ||
| main-internal.h | ||
| mono-runtime.h.t4 | ||
| mono-runtime.m.t4 | ||
| monotouch-debug.h | ||
| monotouch-debug.m | ||
| monotouch-main.m | ||
| monotouch-support.h | ||
| monovm-bridge.m | ||
| nativeaot-bridge.m | ||
| nsstring-localization.m | ||
| product.in.h | ||
| runtime-generated.h.t4 | ||
| runtime-internal.h | ||
| runtime.m | ||
| shared.h | ||
| shared.m | ||
| slinked-list.h | ||
| trampolines-arm64-asm.s | ||
| trampolines-arm64-objc_msgSend.inc.s | ||
| trampolines-arm64-objc_msgSend.s | ||
| trampolines-arm64-objc_msgSendSuper.s | ||
| trampolines-arm64.h | ||
| trampolines-arm64.m | ||
| trampolines-i386-asm.s | ||
| trampolines-i386-objc_msgSend-copyframe.inc | ||
| trampolines-i386-objc_msgSend-post.inc | ||
| trampolines-i386-objc_msgSend-pre.inc | ||
| trampolines-i386-objc_msgSend.s | ||
| trampolines-i386-objc_msgSendSuper.s | ||
| trampolines-i386-objc_msgSendSuper_stret.s | ||
| trampolines-i386-objc_msgSend_stret.s | ||
| trampolines-i386.h | ||
| trampolines-i386.m | ||
| trampolines-internal.h | ||
| trampolines-invoke.m | ||
| trampolines-varargs.h | ||
| trampolines-varargs.m | ||
| trampolines-x86_64-asm.s | ||
| trampolines-x86_64-objc_msgSend-copyframe.inc | ||
| trampolines-x86_64-objc_msgSend-post.inc | ||
| trampolines-x86_64-objc_msgSend-pre.inc | ||
| trampolines-x86_64-objc_msgSend.s | ||
| trampolines-x86_64-objc_msgSendSuper.s | ||
| trampolines-x86_64-objc_msgSendSuper_stret.s | ||
| trampolines-x86_64-objc_msgSend_stret.s | ||
| trampolines-x86_64.h | ||
| trampolines-x86_64.m | ||
| trampolines.m | ||
| xamarin-support.m | ||
README.md
Native runtime
This directory contains the native runtime for Xamarin.iOS and Xamarin.Mac.
Cooperative GC
See COOP.md
Generated code
A few files are generated automatically:
delegates.h|inc, Delegates.cs
These files contain the code required to glue the native runtime and the managed runtime.
mono-runtime.m, xamarin/mono-runtime.h
These files contain code that makes other code, consumers of the mono runtime, oblivious to whether the mono runtime is linked statically, dynamically, or using dlopen at runtime.
If you need to use a new function from the Mono headers, add it to exports.t4.
If you need a new enum / constant / typedef / etc, add it to mono-runtime.h.t4.
Shipped headers
These are the headers shipped with XI/XM (they're not for public consumption, but we need them to build generated code on customers machine, in particular main.m and registrar.m)
xamarin/runtime.h xamarin/trampolines.h xamarin/main.h xamarin/xamarin.h