We need to call coreclr_initialize/monovm_initialize at startup, so do that.
This is a partial implementation, in that we're not setting all the properties
that we should, and also the PINVOKE_OVERRIDE callback is not doing everything
it should either yet.
Ref: #10504.
Move the creation of an uninitialized NSObject from native to managed, which:
* Removes the need for the mono_object_new Embedding API.
* Removes one location where we write to managed memory from native code (to
write the handle + flags in the uninitialized NSObject).
* Makes things easier for CoreCLR.
* We already switch to GC Safe mode anyway, so there were no benefits from
entering native code in a GC unsafe mode. In fact we used to switch to GC
Safe mode for every statement in xamarin_release_managed_ref, and now we can
execute everything in GC Safe mode without switching back and forth. This
also means there should be no difference in behavior.
* All parameters are blittable, so there's no extra marshalling cost.
* Easier for CoreCLR.
* Avoids a native->managed transition
* Avoids creating/destroying a GCHandle.
* Makes it possible to remove an argument from the call to
xamarin_release_managed_ref.
* Makes things easier for CoreCLR.
* [runtime] Port the is_user_type function from native to managed code.
* This is a straight forward port of native code to managed code, and
shouldn't have any significant side effects.
* Makes it possible to move more code from native to managed for
xamarin_create_managed_ref and xamarin_release_managed_ref in the future.
* Update xtro.
Any performance difference will be neglible compared to running the GC, so
there's no compelling reason to use the embedding API.
This makes things a bit easier with CoreCLR, since the new code works there too.
This also required a few changes in delegates.t4 to make code generation for
functions without arguments work correctly.
* Avoids one usage of xamarin_set_nsobject_flags (which pokes into managed
memory from native code, which won't be possible with CoreCLR).
* Makes it possible to move more code from native to managed for
xamarin_release_managed_ref in the future.
* Since the code order is exactly the same, it shouldn't have any other side
effects.
* Convert the GCHandles interface from 32-bit ints to pointer size types
This involves:
* Stop using some bits of the GCHandle to store extra flags, instead add an extra
field to store those flags.
* Define a INVALID_GCHANDLE constant and use it instead of 0/NULL. This is not
strictly required, but it makes the code more self-documenting.
* Define a GCHandle type (typedef'ed to void*) and change all variables and parameters
to use it instead of guint32.
* Use our own xamarin_gchandle_* methods (with pointer-sized types) that wraps
the mono_gchandle_* embedding API (which uses 32-bit types) everywhere.
* Update managed code (registrars, runtime code, etc) accordingly.
* [runtime] Make debug code compile.
* Fix typo.
* Fix signature of xamarin_create_gchandle.
Co-authored-by: Aaron R Robinson <arobins@microsoft.com>
* [dotnet] Fix install name for libxamarin[-debug].dylib on macOS
* When using DYNAMIC_MONO_RUNTIME pass down the bundle directory in MONO_PATH to the relaunched process. Also fix support for custom bundle names in the surrounding code.
* Fix pattern matching
* [runtime] Give a better error message if we can't load ObjCRuntime.Runtime.Initialize ()
Otherwise we'll get a SIGSEGV due to dereferencing NULL.
* Rework strings a bit to have fewer unique strings.
`strlen` is part of the list of C API banned by Microsoft.
Also rename a local variable in `Runtime.cs` so grepping the source
files won't show `strlen` outside the `tests` subdirectories.
The native methods xamarin_get_[generic_]method_from_token are a bit unusual
in that they return an actual GCHandle. This is for performance reasons, since
in some cases their return value is passed as parameters to other function
calls to managed code, in which case we need the GCHandle. This way we avoid
round-tripping a GCHandle multiple times.
Also print out something to the system log. In theory
xamarin_process_managed_exception should also end up terminating the process
in one way or another, but when something goes wrong it tend to go very, very
wrong, so this makes sure some info is printed somewhere.
* [mmp] Set 'disable_omit_fp' by default to provide better native stack traces in certain cases.
This may produce better stack traces when crashes occur, which could be
helpful for tracking down issues like
https://github.com/xamarin/maccore/issues/643.
Also add an mmp option to override the default behavior.
This is unlikely to cause any problems, because Visual Studio for Mac sets
MONO_DEBUG=disable_omit_fp at launch, which means that all processes launched
by VSMac will also have this variable set already.
* Fix lldb attach disabling.
Some of the fixes done for the warnings have breaking changes. Move back
to int and ensure that we do not have any compilation errors (we are
using -Werror).
Fixes: https://github.com/xamarin/xamarin-macios/issues/7509
`xamarin_notify_dealloc` can throw an exception (depending on the mode
used).
Throwing exception in a destructor is problematic in [Obj]C++ and can
abort the application. That might be fine in some cases but there's
not much point in doing so when we're about to forget everything about
that specific object.
* [Runtime] Enable the -Wshorten-64-to-32 flag and fix all warnings.
We want to enable the -Wconversion but that will raise too many warning
for a single commit. We are enabiling one by one the flags included in
-Wconversion so that we have smaller diffs.
-Wshorten-64-to-32 adds warnings when there is a implicit conversion that
loses integer precision. We are moving all the 32 to 64 conversions to
use 64. Expecially since most of the code changed is related with sizes,
legths and params counts that are never going to be negative.
Co-Authored-By: Rolf Bjarne Kvinge <rolf@xamarin.com>
Enable the -Wsign-compare which will raise issues when a comparison
between signed and unsigned values could produce an incorrect result
and fix all the raised warnings.
If `old_gchandle` is not set (0) then the function returns early,
so can't be 0 after the `MONO_THREAD_ATTACH` meaning:
* the `else` branch is never executed;
* the `exception_gchandle` is never set to something other than 0
* ` if (exception_gchandle == 0) {` is always `true` and can be removed (diff looks bigger than it is because of indentation change)
= the call to `xamarin_process_managed_exception_gchandle` is unneeded
It is the more common and optimized idiom to just substract two integer values rather than do conditional checks. This may yield better performance for the qsort function, improving a bit of the startup time in case of many items
* Use a better, non-overflowing version with bit twiddling hacks.
Credits to @mandel-macaque for the magic
* [runtime] Add an inner exception parameter to Runtime.CreateProductException.
This allows us to simplify code by using inner (and outer) exceptions as
a means to provide information instead of passing extra information
around in order to create decent exceptions.
One example is how we pass the selector and method name to the method
that converts from a native id to a managed NSObject instance: passing
this information is not necessary anymore if we can use two exceptions,
one for the failure to convert from an id to a NSObject instance,
wrapped in a second that tells which method/selector call ran into this
conversion problem.
* [runtime] Throw better exceptions when the dynamic registrar can't marshal something.
* [runtime] Throw a better exception when something goes wrong when trying to marshal a return value.
* [runtime] Use inner exceptions to convey failure information instead of trying to create a single exception with all we know.
* Fix merge problem.
* [runtime] Only print the stack trace if we have a stack trace.
* [runtime] Only print 'Unhandled managed exception' when it's actually an unhandled exception.
We render exceptions in several other circumstances, when they're not
unhandled, so this improves the output text in those scenarios a little bit.
* [runtime] Fix typo in logging message.
* [runtime] Improve abort message for managed exception marshalling a bit.
Rolf Bjarne Kvinge
Filip Navara
Sebastien Pouliot
Manuel de la Pena
Marius Ungureanu
Bernhard Urban