Summary:
changelog: [internal]
Rename method so it does not collide with immediates that already exist in React Native.
Reviewed By: javache
Differential Revision: D34041418
fbshipit-source-id: 0ae75b683983c3be50320b195a7068d7178b0ed8
Summary:
changelog: [internal]
With multiple requests to the runtime, we need to make sure they are all granted before React continues with rendering. A boolean is not enough to track this. The first lambda that has VM will set it to false and subsequent requests will have to wait for React to finish rendering.
To prevent this, we can count how many lambdas are pending access to the runtime.
Reviewed By: ShikaSD
Differential Revision: D33792734
fbshipit-source-id: f785fae3575470179dd69acc6a466211b79b633b
Summary:
D33740360 (https://github.com/facebook/react-native/commit/16ed62a850dd81bd9cc7f77ab3e77f42ed64b177) broke Explore VR on React Native. The app would go into a loop on boot and not finish mounting. This is probably a product code issue, but it's not a trivial issue to solve. Unlanding to unblock the RN migration.
Changelog:
[internal] internal
Reviewed By: mdvacca
Differential Revision: D33918026
fbshipit-source-id: cc77c70ece9994d82c91f7ae8783e959629e9cfb
Summary:
changelog: [internal]
React on web uses microtasks to schedule a synchronous update for discrete event. Microtasks are not yet available in React Native and as a fallback, React uses native scheduler and task with immediate priority. Until Microtasks are in place, React Native needs to make sure all immediate tasks are executed after it dispatches each event.
I tried to stay as close to [microtask standard](https://developer.mozilla.org/en-US/docs/Web/API/queueMicrotask) as I reasonably could.
Once microtasks on RN are shipped, this code can be removed.
Reviewed By: mdvacca
Differential Revision: D33742583
fbshipit-source-id: eddebb1bd5131ee056252faad48327a70de78a4a
Summary:
Changelog: [internal]
Add comments and avoid using shared_ptr unnecessarily.
Why note shared_ptr? Using shared_ptr suggests we are transferring ownership of object, which we are not.
Reviewed By: javache
Differential Revision: D33741836
fbshipit-source-id: 56ebb098e6185793f05e2bb587005bb0f093c0c9
Summary:
changelog: [internal]
Yielding in RuntimeScheduler is shipped. This diff removes the gating around it.
Reviewed By: sshic
Differential Revision: D33740360
fbshipit-source-id: 267372e81e66dda96e451435954a7c3546cc6fbe
Summary:
changelog: [internal]
You can read more about this rule on https://clang.llvm.org/extra/clang-tidy/checks/modernize-pass-by-value.html
# Isn't it wasteful to copy? Isn't reference more efficient?
This rule of thumb is no longer true since C++11 with move semantics. Let's look at some examples.
# Option one
```
class TextHolder
{
public:
TextBox(std::string const &text) : text_(text) {}
private:
std::string text_;
};
```
By using reference here, we prevent the caller from using rvalue to and avoiding copy. Regardless of what the caller passes in, copy always happens.
# Option two
```
class TextHolder
{
public:
TextBox(std::string const &text) : text_(text) {}
TextBox(std::string &&text) : text_(std::move(text)) {}
private:
std::string text_;
};
```
Here, we provide two constructors, one for const reference and one for rvalue reference. This gives the caller option to avoid copy. But now we have two constructors, which is not ideal.
# Option three (what we do in this diff)
```
class TextHolder
{
public:
TextBox(std::string text) : text_(std::move(text)) {}
private:
std::string text_;
};
```
Here, the caller has option to avoid copy and we only have single constructor.
Reviewed By: fkgozali, JoshuaGross
Differential Revision: D33276841
fbshipit-source-id: 619d5123d2e28937b22874650366629f24f20a63
Summary:
changelog: [internal]
Only execute tasks that are expired when in synchronous mode.
Reviewed By: philIip
Differential Revision: D33062746
fbshipit-source-id: 1825cb572202d1f5dc18eb2b481dd3c20e8e91ba
Summary:
changelog: [internal]
Exposes a new flag on RuntimeScheduler: `unstable_getIsSynchronous`. Flag indicates if the current code is run synchronously and therefore commit phase should be synchronous.
Unit tests will be added later, to keep this diff short. This code path is not executed yet.
Reviewed By: mdvacca, ShikaSD
Differential Revision: D32677814
fbshipit-source-id: e01d4fff7e716d627ff99fe104965851138c3aef
Summary:
changelog: [internal]
Catch JavaScript errors and forward them to `ErrorUtils` in *RuntimeScheduler*. This makes sure that JS errors are handled by ErrorUtils and do not bubble up to bridge.
Reviewed By: philIip
Differential Revision: D31429001
fbshipit-source-id: 50f865872e4cd3ba180056099ff40f5962ee7a77
Summary:
changelog: [internal]
Don't use C++ 17 features in RuntimeScheduler module as it needs to be imported into C++14 module.
Also removes redundant dependency.
Reviewed By: ShikaSD
Differential Revision: D30485642
fbshipit-source-id: 0a20f85c596eebe193affc815c8ca851fc72e46d
Summary:
Changelog: [internal]
If task that is being executed schedules a new task with higher priority, the new task will be dropped from the queue. To fix this, we always check if the top of the queue is what was executed and only then remove it.
Example:
Let's say there is task A with priority "normal".
When we execute task A (which is not removed from the queue until later), it adds a task B with "immediate" priority.
So priority queue now has two tasks: [1: B, 2: A]
After task A finishes, inside workLoop, it will pop from top of the priority queue. But task A is no longer top of the priority queue (this is the bug) and it pops B. B is never executed and A is executed twice.
Reviewed By: ShikaSD
Differential Revision: D29841433
fbshipit-source-id: b2f1474fdfc7b3e2d42bae5b7f4ac7e6c3a37b54
Summary:
Changelog: [internal]
Introduces synchronous access to the runtime from RuntimeScheduler.
At the moment, this is not used anywhere.
In case RuntimeScheduler isn't defined (controlled by MC), falls back to RuntimeExecutor.
Reviewed By: mdvacca
Differential Revision: D28024380
fbshipit-source-id: 90be36dd390202540ed51940a4396040f043cd90
Summary:
Changelog: [internal]
Only moves methods around so public and private methods are grouped together.
Reviewed By: JoshuaGross
Differential Revision: D28381588
fbshipit-source-id: dae7f493b99845f66070689270bc7aef958fbecd
Summary:
Changelog: [internal]
This diff moves all calls to RuntimeExecutor to RuntimeScheduler. The calls are still immediately dispatched. Timing of events will not change.
The goal of this diff is to prepare infrastructure for Concurrent Mode.
Reviewed By: JoshuaGross
Differential Revision: D27937665
fbshipit-source-id: 434d78c95ccf23d8da41186d0dae91bff4eda384
Summary:
Changelog: [internal]
Scheduler's callback have option to add more work inside callback. This work stays on top of the priority queue and gives React ability to flush all work synchronously if need.
This diff adds use of `shouldYield_` to the workLoop. For now, it always evaluates to false. In the future when we allow access to the scheduler to native, it will allow yielding.
Relevant code in JavaScript:
https://github.com/facebook/react/blob/master/packages/scheduler/src/forks/SchedulerNoDOM.js#L190
Reviewed By: mdvacca
Differential Revision: D27823528
fbshipit-source-id: 016101e41eb7c41c2ac5abb55f803814867b8517
Summary:
Changelog: [internal]
This brings native scheduler close to React's scheduler. React's scheduler executes all tasks in the queue within a single dispatch (they use setTimeout(0) for dispatch) and makes sure to not schedule two dispatches.
Relevant JS code:
https://github.com/facebook/react/blob/master/packages/scheduler/src/forks/SchedulerNoDOM.js#L359
Reviewed By: JoshuaGross
Differential Revision: D27793200
fbshipit-source-id: 4af13d95cfe4d33d0945f25929ccbea5f9ce5710
Summary:
Changelog: [internal]
To prevent starvation, this diff implements expiration time as a way to order tasks in priority queue. This stops higher priority tasks from preventing lower priority tasks from running. The same mechanism is implemented in [JavaScript's scheduler](https://github.com/facebook/react/blob/master/packages/scheduler/src/forks/SchedulerNoDOM.js).
Reviewed By: mdvacca
Differential Revision: D27707887
fbshipit-source-id: 3dc734c856a166ef5c17c5045ebd429565ba79f0
Summary:
Changelog: [internal]
Implement RuntimeScheduler::getShouldYield and expose it through JSI.
For now we are only returning `false`. The value is backed by atomic_bool and in the future we will be able to indicate that React should yield to native.
JavaScript implementation:
https://github.com/facebook/react/blob/master/packages/scheduler/src/forks/SchedulerNoDOM.js#L439-L441
Reviewed By: JoshuaGross
Differential Revision: D27648579
fbshipit-source-id: b9313e2efbd9daae8975357df9de803f24a35e89
Summary:
Changelog: [internal]
Add minimal implementation of schedule task. More features and proper scheduling will be added later.
Reviewed By: mdvacca
Differential Revision: D27622138
fbshipit-source-id: b2e4623d38e7217290a6a3c59ccc10a1c13e3a4f
Summary:
Changelog: [internal[
Introducing RuntimeScheduler. A coordinator of work between native and React.
Reviewed By: mdvacca
Differential Revision: D27616818
fbshipit-source-id: e90d3d9ca8907be99e61f69e62e83cece8155050
Samuel Susla
Felipe Perez
Andres Suarez