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@fabriziobertoglio1987 any updates? 😊 |
fabOnReact
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Feb 1, 2021
Summary:
changelog: [internal]
Prevents 2 type converions:
1. int <-> size_t
2. int <-> int32_t
# Why is using size_t better when working with indexes.
## 1. Type conversion isn't for free.
Take this example
```
size_t calculate(int number) {
return number + 1;
}
```
It generates following assembly (generated with armv8-a clang 10.0.0):
```
calculate(int): // calculate(int)
sub sp, sp, facebook#16 // =16
str w0, [sp, facebook#12]
ldr w8, [sp, facebook#12]
add w9, w8, #1 // =1
mov w8, w9
sxtw x0, w8
add sp, sp, facebook#16 // =16
ret
```
That's 9 instructions.
If we get rid of type conversion:
```
size_t calculate(size_t number) {
return number + 1;
}
```
Assembly (generated with armv8-a clang 10.0.0):
```
calculate(unsigned long): // calculate(unsigned long)
sub sp, sp, facebook#16 // =16
str x0, [sp, #8]
ldr x8, [sp, #8]
add x0, x8, #1 // =1
add sp, sp, facebook#16 // =16
ret
```
Compiler now produces only 7 instructions.
## Semantics
When using int for indexing, the type doesn't say much. By using `size_t`, just by looking at the type, it gives the reader more information about where it is coming from.
Reviewed By: JoshuaGross
Differential Revision: D24332248
fbshipit-source-id: 87ef982829ec14906ed9e002ea2e875fda4a0cd8
|
@mariomurrent-softwaresolutions thanks a lot. Yes, you are right. I should push the master branch more often, but usually I use my local version .. because I'm busy. I can not merge this pr ... sorry.. I am very busy right now and this fork is not meant to be used for collaboration. Thanks a lot for the advice 🙏 |
fabOnReact
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Nov 29, 2023
Summary: Pull Request resolved: facebook#41466 ## Context In open source, all apps use the same turbomodulemanager delegate (i.e: the default delegate). This diff introduces the buck infra that makes the oss default delegate work for meta apps. Concretely, we are going to make React Native use the same delegate for **all** Meta apps. Each Meta app will: 1. At build time, generate a unique TMProvider map 2. At app init time, initialize the default delegate with the TMProvider map. ## Implementation **Step #1:** At build time, generate a unique TMProvider map **Insight:** Buck genrules can accept, as input, the output of a buck query. So, here's how we get this done: 1. Buck query (i.e: input to Genrule): Given the app's deps, query all the schemas in the app. 2. Genrule: Read the schemas to generate the TMProvider map. The TMProvider map will also contain **all** the app's C++ module codegen. Concretely: 1. This diff introduces a macro: rn_codegen_appmodules(deps). 2. rn_codegen_appmodules(deps) generates appmodules.so, which contains the TMProvider map. **Step #2:** At app init time, initialize the default delegate with the TMProvider map. This is how we'll initialize the DefaultTurboModuleManagerDelegate: 1. DefaultTurboModuleManagerDelegate will load appmodules.so during init. 2. When loaded, appmodules.so will assign the code-generated TMProvider map to DefaultTurboModuleManagerDelegate. ## Impact This should allow us to: 1. Get one step closer to getting rid of the `js1 build turbomodule-manager-delegates --target <app>` script 3. Remove the TurboModuleManagerDelegate from React Native's public API. (Because we use one delegate for all React Native apps in Meta and OSS) Changelog: [Internal] Reviewed By: mdvacca Differential Revision: D50988397 fbshipit-source-id: 0ca5dec14e2dae89ec97f5d39a182c7937c5c7bf
fabOnReact
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Feb 18, 2024
…gets Summary: Changelog: [Internal] # This diff 1. Provides all Targets with an `executorFromThis()` method, which can be used from within a Target to access a *`this`-scoped main thread executor* = a `std::function` that will execute a callback asynchronously iff the current Target isn't destroyed first. 2. Refactors how (all) Target objects are constructed and retained, from a plain constructor to `static shared_ptr create()`. This is because `executorFromThis()` relies internally on `enable_shared_from_this` plus two-phase construction to populate the executor. 3. Creates utilities for deriving scoped executors from other executors and `shared_ptr`s. The concept is very much like `RuntimeExecutor` in reverse: the #1 use case is moving from the JS thread back to the main thread - where "main thread" is defined loosely as "anywhere it's legal to call methods on Target/Agent objects, access session state, etc". The actual dispatching mechanism is left up to the owner of each `PageTarget` object; for now we only have an iOS integration, where we use `RCTExecuteOnMainQueue`. Coupling the ownership/lifetime semantics with task scheduling is helpful, because it avoids the footgun of accidentally/nondeterministically moving `shared_ptr`s (and destructors!) to a different thread/queue . # This stack I'm refactoring the way the Runtime concept works in the modern CDP backend to bring it in line with the Page/Instance concepts. Overall, this will let us: * Integrate with engines that require us to instantiate a shared Target-like object (e.g. Hermes AsyncDebuggingAPI) in addition to an per-session Agent-like object. * Access JSI in a CDP context (both at target setup/teardown time and during a CDP session) to implement our own engine-agnostic functionality (`console` interception, `Runtime.addBinding`, etc). * Manage CDP execution contexts natively in RN, and (down the line) enable first-class debugging support for multiple Runtimes in an Instance. The core diffs in this stack: * ~~Introduce a `RuntimeTarget` class similar to `{Page,Instance}Target`. ~~ * ~~Make runtime registration explicit (`InstanceTarget::registerRuntime` similar to `PageTarget::registerInstance`). ~~ * ~~Rename the existing `RuntimeAgent` interface to `RuntimeAgentDelegate`.~~ * ~~Create a new concrete `RuntimeAgent` class similar to `{Page,Instance}Agent`.~~ * ~~Provide `RuntimeTarget` and `RuntimeAgent` with primitives for safe JSI access, namely a `RuntimeExecutor` for scheduling work on the JS thread.~~ * Provide RuntimeTarget with mechanism for scheduling work on the "main" thread from the JS thread, for when we need to do more than just send a CDP message (which we can already do with the thread-safe `FrontendChannel`) in response to a JS event. *← This diff* ## Architecture diagrams Before this stack: https://pxl.cl/4h7m0 After this stack: https://pxl.cl/4h7m7 Reviewed By: hoxyq Differential Revision: D53356953 fbshipit-source-id: 152c784eb64e9b217fc2966743b33f61bd8fd97e
fabOnReact
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May 23, 2025
…tion for existing view (facebook#51294) Summary: Pull Request resolved: facebook#51294 changelog: [internal] Fix a crash where a node that is supposed to be culled doesn't get visited because culling context is not updated. The differentiator would generate a create instruction for a view that already exists. Stack trace for the crash: ``` * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT * frame #0: 0x0000000111740874 libsystem_kernel.dylib`__pthread_kill + 8 frame #1: 0x00000001117aa2ec libsystem_pthread.dylib`pthread_kill + 264 frame #2: 0x0000000180171ea8 libsystem_c.dylib`abort + 100 frame #3: 0x00000001802b0144 libc++abi.dylib`abort_message + 128 frame #4: 0x000000018029fe4c libc++abi.dylib`demangling_terminate_handler() + 296 frame #5: 0x000000018006f220 libobjc.A.dylib`_objc_terminate() + 124 frame #6: 0x00000001375d1964 INFRAFramework`meta_terminate() + 5468 frame #7: 0x00000001802af570 libc++abi.dylib`std::__terminate(void (*)()) + 12 frame #8: 0x00000001802b2498 libc++abi.dylib`__cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 32 frame #9: 0x00000001802b2478 libc++abi.dylib`__cxa_throw + 88 frame #10: 0x0000000180093904 libobjc.A.dylib`objc_exception_throw + 384 frame facebook#11: 0x0000000180e6999c Foundation`-[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] + 268 frame facebook#12: 0x000000031a3bcfc8 XPLAT_6_Framework`-[RCTComponentViewRegistry dequeueComponentViewWithComponentHandle:tag:] + 528 frame facebook#13: 0x000000031a3ccdec XPLAT_6_Framework`RCTPerformMountInstructions(std::__1::vector<facebook::react::ShadowViewMutation, std::__1::allocator<facebook::react::ShadowViewMutation>> const&, RCTComponentViewRegistry*, RCTMountingTransactionObserverCoordinator&, int) + 356 frame facebook#14: 0x000000031a3ccc7c XPLAT_6_Framework`-[RCTMountingManager performTransaction:]::$_1::operator()(facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) const + 80 frame facebook#15: 0x000000031a3ccc20 XPLAT_6_Framework`decltype(std::declval<-[RCTMountingManager performTransaction:]::$_1&>()(std::declval<facebook::react::MountingTransaction const&>(), std::declval<facebook::react::SurfaceTelemetry const&>())) std::__1::__invoke[abi:ne190102]<-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&>(-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 40 frame facebook#16: 0x000000031a3ccbc8 XPLAT_6_Framework`void std::__1::__invoke_void_return_wrapper<void, true>::__call[abi:ne190102]<-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&>(-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 40 frame facebook#17: 0x000000031a3ccb94 XPLAT_6_Framework`std::__1::__function::__alloc_func<-[RCTMountingManager performTransaction:]::$_1, std::__1::allocator<-[RCTMountingManager performTransaction:]::$_1>, void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()[abi:ne190102](facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 44 frame facebook#18: 0x000000031a3cba1c XPLAT_6_Framework`std::__1::__function::__func<-[RCTMountingManager performTransaction:]::$_1, std::__1::allocator<-[RCTMountingManager performTransaction:]::$_1>, void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()(facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 44 frame facebook#20: 0x000000032f219804 XPLAT_1_Framework`std::__1::function<void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()(this=0x000000016d4f0c78, __arg=0x000000016d4f0a10, __arg=0x000000016d4f0978) const at function.h:989:10 frame facebook#21: 0x000000032f219668 XPLAT_1_Framework`facebook::react::TelemetryController::pullTransaction(this=0x00000003f4680f00, willMount=0x000000016d4f0c98, doMount=0x000000016d4f0c78, didMount=0x000000016d4f0c58) const at TelemetryController.cpp:39:3 frame facebook#22: 0x000000031a3c5b28 XPLAT_6_Framework`-[RCTMountingManager performTransaction:] + 544 frame facebook#23: 0x000000031a3c5864 XPLAT_6_Framework`-[RCTMountingManager initiateTransaction:] + 456 frame facebook#24: 0x000000031a3c5240 XPLAT_6_Framework`__42-[RCTMountingManager scheduleTransaction:]_block_invoke + 308 frame facebook#25: 0x0000000131f81b84 BOTTOMFramework`__RCTExecuteOnMainQueue_block_invoke + 40 frame facebook#26: 0x000000018017c788 libdispatch.dylib`_dispatch_call_block_and_release + 24 frame facebook#27: 0x0000000180197278 libdispatch.dylib`_dispatch_client_callout + 12 frame facebook#28: 0x00000001801b2fcc libdispatch.dylib`_dispatch_main_queue_drain.cold.7 + 24 frame facebook#29: 0x000000018018c1c4 libdispatch.dylib`_dispatch_main_queue_drain + 1184 frame facebook#30: 0x000000018018bd14 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 40 frame facebook#31: 0x0000000180427fec CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12 frame facebook#32: 0x00000001804229f8 CoreFoundation`__CFRunLoopRun + 1920 frame facebook#33: 0x0000000180421e3c CoreFoundation`CFRunLoopRunSpecific + 536 frame facebook#34: 0x0000000190f62d00 GraphicsServices`GSEventRunModal + 164 frame facebook#35: 0x0000000185bcec98 UIKitCore`-[UIApplication _run] + 796 frame facebook#36: 0x0000000185bd3064 UIKitCore`UIApplicationMain + 124 frame facebook#37: 0x0000000115fbf0bc PRODUCTFramework`main + 200 frame facebook#38: 0x00000001114293d8 dyld_sim`start_sim + 20 frame facebook#39: 0x0000000111506b4c dyld`start + 6000 ``` Reviewed By: rubennorte Differential Revision: D74654157 fbshipit-source-id: 9181bcd28524c71d0ca4620bd630dc0baa172386
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Merged changes from React-Native master into numpad-keypress-not-logging branch
@fabriziobertoglio1987