Summary:
Continuing the adding of a "cause" field for logging to GCs.
This allows embedders of Hermes (such as React Native) to specify
the cause of a call to `collectGarbage`.
Notably, this allows Hermes to know when a GC is triggered by a memory warning.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D23742099
fbshipit-source-id: 99453e632328c00045b92a72f789d41c898dc518
Summary:
This pull request tweaks the build script for `jsiruntime` to ensure that `RN_FABRIC_ENABLED` is defined when building for Android with Fabric enabled, and using the JavascriptCore JS engine. Without it, the `createWeakObject` and `lockWeakObject` methods in `JSCRuntime.cpp` will throw an exception.
## Changelog
[Internal] [Changed] - Android: Ensure RN_FABRIC_ENABLED is defined when building with Fabric
Pull Request resolved: https://github.com/facebook/react-native/pull/29939
Test Plan: RNTester with JSC now builds and runs on Android with Fabric enabled.
Reviewed By: hramos
Differential Revision: D23671070
Pulled By: fkgozali
fbshipit-source-id: 27e69364a9f709615543be7c20b72b5536443cd8
Summary:
Microsoft’s RN for macOS fork supports the Hermes engine nowadays https://github.com/microsoft/react-native-macos/pull/473. As a longer term work item, we’ve started moving bits that are not invasive for iOS but _are_ a maintenance burden on us—mostly when merging—upstream. Seeing as this one is a recent addition, it seemed like a good candidate to start with.
As to the actual changes, these include:
* Sharing Android’s Hermes executor with the objc side of the codebase.
* Adding a CocoaPods subspec to build the Hermes inspector source and its dependencies (`Folly/Futures`, `libevent`).
* Adding the bits to the Xcode build phase script that creates the JS bundle for release builds to compile Hermes bytecode and source-maps…
* …coincidentally it turns out that the Xcode build phase script did _not_ by default output source-maps for iOS, which is now fixed too.
All of the Hermes bits are automatically enabled, on macOS, when providing the `hermes-engine-darwin` [npm package](https://www.npmjs.com/package/hermes-engine-darwin) and enabling the Hermes pods.
## Changelog
[General] [Added] - Upstream RN macOS Hermes integration bits
Pull Request resolved: https://github.com/facebook/react-native/pull/29748
Test Plan:
Building RNTester for iOS and Android still works as before.
To test the actual changes themselves, you’ll have to use the macOS target in RNTester in the macOS fork, or create a new application from `master`:
<img width="812" alt="Screenshot 2020-08-18 at 16 55 06" src="https://user-images.githubusercontent.com/2320/90547606-160f6480-e18c-11ea-9a98-edbbaa755800.png">
Reviewed By: TheSavior
Differential Revision: D23304618
Pulled By: fkgozali
fbshipit-source-id: 4ef0e0f60d909f3c59f9cfc87c667189df656a3b
Summary:
The change in the hermes repository fixes the security vulnerability
CVE-2020-1911. This vulnerability only affects applications which
allow evaluation of uncontrolled, untrusted JavaScript code not
shipped with the app, so React Native apps will generally not be affected.
This revision includes a test for the bug. The test is generic JSI
code, so it is included in the hermes and react-native repositories.
Changelog: [Internal]
Reviewed By: tmikov
Differential Revision: D23322992 (0dee0e6036)
fbshipit-source-id: 4e88c974afe1ad33a263f9cac03e9dc98d33649a
Summary:
On windows it is required to explicitly specify what symbols need to be exported from a DLL to make them accessible (using `__declspec(dllexport)`). I have added and expanded on existing macros to do this and added exports that were previously missing.
Changelog:
[Internal][Changed] - Allow Hermes to be compiled to a single DLL on windows
Reviewed By: mhorowitz
Differential Revision: D23084343
fbshipit-source-id: 832cb17b9e637e4c04dad479aae6c1fc190f968e
Summary:
JSError creation can lead to further errors. Make sure these cases
are handled and don't cause weird crashes or other issues.
This solution has a few parts:
* include a ScopedNativeDepthTracker in checkStatus
* If an exception object message or stack property is already a String, don't
call JS String ctor on it
* Verify that a jsi::Value is a String before calling getString on it.
* Add more tests for JSError construction
Changelog: [Internal]
Reviewed By: dulinriley
Differential Revision: D21851645
fbshipit-source-id: 2d10da0e741ad4ede93cd806320f68ad512e5138
Summary:
A key difference in WeakRefs with the Hades GC is that they are mutable,
in the sense that reading the value of a WeakRef while a GC is active might
clear the WeakRef.
For this reason, attempting to lock the WeakObject might mutate the backing
reference.
I preferred to communicate this change in behavior via the API rather than
`const_cast` it away inside the implementation.
Changelog: [Internal] Change jsi::WeakObject to be mutable in lockWeakObject
Reviewed By: mhorowitz
Differential Revision: D21485758
fbshipit-source-id: 3618928be8f8791aed56cb20673896ff5b786ded
Summary:
We consume Hermes through multiple .so's, which means we have multiple (weak) typeinfo definitions of facebook::jsi::JSError. Previously we were using gnustl, which would strcmp typeinfo to decide whether a certain exception handler applies, which meant this didn't cause any major issues. However since this is deprecated, we recently switched to libc++, which does not have this by behaviour (or it does, but behind a flag I'm not sure how to enable). This causes any JS exceptions to fall through from our exception handlers and fatal the app.
This problem is actually documented in the common Android NDK problems page: https://android.googlesource.com/platform/ndk/+/master/docs/user/common_problems.md#rtti_exceptions-not-working-across-library-boundaries
The suggested solution is to ensure that any exception types have a key function defined (a non-pure, out-of-line virtual function). The simplest one to add is a virtual destructor. This makes the object file that holds the implementation of the destructor export a non-weak typeinfo definition which will at load time override the other weak versions.
I'm not sure why we're the first to hit this. RN's JSIExecutor doesn't explicitly reference JSError which probably helps (https://github.com/facebook/react-native/blob/master/ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp#L256-L258) and they also don't use unguarded callbacks like we do.
Changelog: [Internal]
Reviewed By: mhorowitz
Differential Revision: D21426524
fbshipit-source-id: 474284ada1ca2810045dc4402c420879447f9308
Summary:
Previously, a derived class, WithTuple, was used. This ran
into bugs in MSVC (see https://github.com/microsoft/STL/issues/121).
Instead, use specialization to get the same result using std::tuple
directly. This avoids the bug, and is a cleaner API.
Changelog: [Internal]
Reviewed By: dulinriley
Differential Revision: D21233677
fbshipit-source-id: 1d75991847164e525b4ba70f65a90627e5f8cd56
Summary:
I'm trying to use JSI for a React Native custom module. I saw these existing examples where the JSI API is used in the context of a CMakeLists.txt:
https://github.com/terrysahaidak/host-object-test/blob/master/libs/android-jsi/test-jsi/src/main/cpp/CMakeLists.txthttps://github.com/ericlewis/react-native-hostobject-demo/pull/4/files#diff-834320be1b4e4016bac27c05dcd17fb9
In both cases, they manually grab the include directories and jsi.cpp from node_modules/react-native, but I also saw that node_modules/react-native/ReactCommon/jsi/jsi already has a CMakeLists.txt that appears to be intended to provide a jsi static lib, so I tried to pull this into my own CMakeLists.txt like this:
```
add_subdirectory(${RN_DIR}/ReactCommon/jsi/jsi ${CMAKE_CURRENT_BINARY_DIR}/jsi)
...
target_link_libraries(MyLib jsi)
```
Unfortunately when doing this, the consuming project still doesn't see the correct include directories. The change I'm proposing here is to use `target_include_directories` and declare that `..` is a public (to consumers) include directory for the library named `jsi`. With this change, you can do what I showed above to consume the jsi lib by just pulling in the CMakeLists.txt file into your own CMakeLists.txt file.
Changelog: [General][Fixed] Fix jsi cmake include dirs
Pull Request resolved: https://github.com/facebook/hermes/pull/207
Reviewed By: willholen
Differential Revision: D21074270
Pulled By: tmikov
fbshipit-source-id: 7d9ec3255f57a16c0b2be489dffa4540727738a1
Summary:
If name is passed in as part of RuntimeConfig, that is included
in the description, too.
Changelog: [Internal]
Reviewed By: dulinriley
Differential Revision: D20716320
fbshipit-source-id: f2fba6df32f496090dee787d8b7f55a6a4dd8ed8
Summary:
`fbsource//xplat` and `//xplat` are equivalent for FB BUCK targets. Removing extra prefix for consistency.
Changelog: [Internal]
Reviewed By: scottrice
Differential Revision: D20495655
fbshipit-source-id: a57b72f694c533e2e16dffe74eccb8fdec1f55f5
Summary:
This was causing an exception cascade leading to production
errors. Added a test which repros the problem and passes with the
fix.
Changelog: [Internal]
Reviewed By: tmikov
Differential Revision: D20408858
fbshipit-source-id: 3fa9b8669bf3bf7617bfc05ef8f23d52bc969b4e
Summary:
I was unsure how, or if, DecoratedHostObjects worked. Marc had created the linked task to make sure that things worked right with multiple levels of decorated host objects. I decided to do that, thinking it would show a bug; instead it showed me that the pattern did work, and let me figure out how.
Changelog: [Internal]
Reviewed By: mhorowitz
Differential Revision: D20263797
fbshipit-source-id: 8bbe71cba1b6ef5b2673566759112320dd1894b8
Summary:
We are moving towards 100%-prettified files. That's the first step when we apply Clang Format for `ReactCommon`.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D20110895
fbshipit-source-id: 0a0ce4997cf1c3721b0b07ef78c1a57ce87d20f9
Summary: The `Function::call` method says it leaves the JS `this` object undefined. According to my tests, that's not completely true: if the function is defined to use strict mode via `"use strict"` either inside itself or in the file it was defined in, it does leave it `undefined`, but if the function is defined in non-strict mode, it sets `this` to the global object instead. This diff updates the documentation to reflect this.
Reviewed By: mhorowitz
Differential Revision: D19613483
fbshipit-source-id: 4b9ecf81c6318592be05a216748dcb22e32989f8
Summary:
We recently updated React Native's docs site to have its own domain reactnative.dev and needed to update the URLs in the source code
CHANGELOG:
[INTERNAL]
Reviewed By: hramos
Differential Revision: D20072842
fbshipit-source-id: 1970d9214c872a6e7abf697d99f8f5360b3b308e
Summary:
[A recent change to JSStringToSTLString](https://github.com/facebook/react-native/pull/26955) causes a crash when the function is invoked with invalid UTF-16 data. The old behaviour, restored here, was to truncate the string before the first invalid character.
Here's how [the original code](aee88b6843/ReactCommon/jsi/JSCRuntime.cpp (L287)) handled this case:
```
std::string JSStringToSTLString(JSStringRef str) {
size_t maxBytes = JSStringGetMaximumUTF8CStringSize(str);
// ^ maxBytes >= 1 regardless of str's contents
std::vector<char> buffer(maxBytes);
// ^ vector is zero initialised
JSStringGetUTF8CString(str, buffer.data(), maxBytes);
// ^ writes '\0' at the first invalid character and returns early (see JSC source code)
return std::string(buffer.data());
// ^ copies the string up to the first '\0'
}
```
See the JSC implementations of [`JSStringGetUTF8CString`](https://opensource.apple.com/source/JavaScriptCore/JavaScriptCore-7600.8.7/API/JSStringRef.cpp.auto.html) and [`convertUTF16ToUTF8`](https://opensource.apple.com/source/WTF/WTF-7600.7.2/wtf/unicode/UTF8.cpp.auto.html).
Based on the fact that `JSStringGetUTF8CString` *always* null-terminates the buffer - even when it bails out of converting an invalid string - here we're able to both
1. keep the fast path (not zero-initialising, not scanning for the null terminator) for the common case when the data is valid and JSStringGetUTF8CString returns a nonzero length; and
2. return the truncated string when JSStringGetUTF8CString returns an error code of 0, by scanning for the null terminator.
Changelog: [General] [Fixed] - Fix crash when passing invalid UTF-16 data from JSC into native code
Differential Revision: D19902751
fbshipit-source-id: 06bace2719800e921ec115ad6a29251eafd473f6
Summary:
In all other areas of JSI, std::string is treated as potentially
containing UTF-8 bytes (instead of ASCII). This fixes the inconsistency.
Changelog: [Internal]
Reviewed By: mhorowitz
Differential Revision: D19871520
fbshipit-source-id: c703f07e10bedbf2518d0bec903f85f43bbcbdf5
Summary:
If we're using synth traces in production, we probably don't want to accumulate the trace in memory, and write it to a file in one big step when an error happens. Rather, we'd like to write the trace incrementally, to a file: file system space is less scarse than memory, and doing it incrementally means less to do in the error handler.
This diff is the first step towards writing the synth trace incrementally. The most difficult aspect of this is that in the existing code, on Android, the trace is written in the handler of an Intent. Java-level operations on the Intent yielded a temporary filename under the application (so if the application is uninstalled, these temporary files are deleted). We must do something similar, but choose the filename within native code, on construction of the SynthTrace object. We copy what profiling does for this: assume the tmp dir is /data/data/<app>, where <app> can be found from reading /proc/self/cmdLine.
The SynthTrace constructor now takes a new argument: a unique_pointer to a stream. If null, no trace file is written, and the SynthTrace just accumulates records in memory. (This functionality is used during trace replay.) . If non-null, the trace is written to that stream.
The "write{BridgeTraffic}Trace..." methods become "flushAndDisable{BridgeTrafficTrace}" methods.
This diff is the first step towards incremental traces: the trace is still written at the end, but we've arranged that the place to write it is available at construction of the SynthTrace object. Later diffs will move recording of static things (e.g., the RuntimeConfig) into the ctor, then actually make us write the trace to the file incrementally.
For ReactNative:
Changelog: [Internal]
Reviewed By: haozhun, dulinriley
Differential Revision: D19471297
fbshipit-source-id: c1de4d2d9f44a87c7ff6fea38a1ce67de593940c
Summary:
Instead of returning a `bool` which gives no information about the cause of the error,
return `void` and throw when there's some error.
Another alternative is returning `std::error_code`, but that's less flexible than throwing, and
this API already supports throwing.
Changelog: [Internal]
Reviewed By: jbower-fb
Differential Revision: D19170033
fbshipit-source-id: 870cd996a1a53c94524455f31765c1da99f57a1d
Summary:
The documentation in two out of the three variants of `Function::callWithThis` incorrectly stated that the `this` value was to be `undefined` instead of set to `jsThis`, which contradicts the point of the `callWithThis` method existing in the first place. This diff fixes that issue.
Changelog: [General] [Fixed] - Fix documentation comments for HermesJS's `Function::callWithThis` method to accurately reflect how `this` is handled.
Reviewed By: jbower-fb
Differential Revision: D19714074
fbshipit-source-id: 123688c1f7e578d6356bec54604fb6e30f06b0b1
Summary:
Adding a `.clang-tidy` to a bunch of dirs under `react-native-github/ReactAndroid` and `react-native-github/ReactCommon`.
I don't want to add a single `.clang-tidy` at the root because we'll need more fine-grained control over what checks are enabled in different parts of the codebase; for example, fabric will and TM will probably have more checks enabled than older parts of the codebase that we're not actively modernizing, and the Hermes team probably wants its own config to be consistent with the rest of their codebase.
Starting off each `.clang-tidy` by only enabling clang-diagnostic; this is just to test that it's working. In the future, we'll work with the community to gradually enable more checks.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D19705749
fbshipit-source-id: 979cea053b645ac4a9790340033bfcfb49ca0f97
Summary:
In my app I have a case where I need to pass a very large string (45MB) between JS and native. This is obviously suboptimal, but… this is where I'm at.
The main bottleneck to doing this turned out to be `jsi`'s `JSStringToSTLString()`, which was extremely slow. In my case, 4.7s to execute. After this change, 204ms.
I don't really know C++, so I'm not sure this code is 100% correct and safe, and I bet it could be done even better by avoiding the extra memory allocation (would shave off another 70ms).
## Changelog
[General] [Changed] - Make JSStringToSTLString 23x faster
Pull Request resolved: https://github.com/facebook/react-native/pull/26955
Reviewed By: shergin
Differential Revision: D19578728
Pulled By: motiz88
fbshipit-source-id: 2fbce83166953ce928f0a6aa36eed710bfe05383
Summary:
This change will keep project consistency.
This change repeat the previous commit 582738bdc8.
That was created by sammy-SC and reviewed by shergin
That changed
* `ASSERT_TRUE` -> `EXPECT_TRUE`
* `ASSERT_NEAR` -> `EXPECT_NEAR`
* `ASSERT_EQ` -> `EXPECT_EQ`
That said
> 1. Replace ASSERT_* with EXPECT_*. Assert is a fatal assertion. Expect is non-fatal assertion. So if assert fails, tests do not continue and therefore provide less information.
>
> 2. Rename tests in `RawPropsTest.cpp` from `ShadowNodeTest` to `RawPropsTest`.
>
> Source: https://github.com/google/googletest/blob/master/googletest/docs/primer.md#basic-assertions
## Changelog
[CATEGORY] [TYPE] - Message
Pull Request resolved: https://github.com/facebook/react-native/pull/27850
Differential Revision: D19568014
Pulled By: shergin
fbshipit-source-id: 7c22cd1c7ec919675e834a060bd5e681d43a8baf
Summary:
The reason for this change is that it is the primary root that we want people to be using and the naming should reflect that.
#nocancel
build-break
overriding_review_checks_triggers_an_audit_and_retroactive_review
Changelog: [Internal]
Oncall Short Name: fbobjc_sheriff
Differential Revision: D19431128
fbshipit-source-id: c7208e20ed0f5f5eb6c2849428c09a6d4af9b6f3
Summary:
This fixes a crash caused by a `JSError` exception not being successfully caught in a different dynamic library from where it was thrown. Since the libraries were compiled with hidden symbols and loaded with `RTLD_LOCAL`, the exception typeinfo becomes unique to each module.
Reading on this subject:
https://gcc.gnu.org/wiki/Visibilityhttps://stackoverflow.com/questions/14268736/symbol-visibility-exceptions-runtime-error
Reviewed By: mhorowitz
Differential Revision: D19343161
fbshipit-source-id: 4eb3bc2576bbcca2c3aef4f52b5a27dfde214c6a
Summary:
It is time to target SDK version 10.0+.
Changelog: [iOS] [Deprecated] - Deprecating support for iOS/tvOS SDK 9.x, 10.0+ is now required
Reviewed By: mdvacca
Differential Revision: D19265731
fbshipit-source-id: 93b6f9e8f61c5b36ff69e80d3f18256aa96cc2c0
Summary:
If building a JSError causes a JSError, this would lead to infinite recursion. This changes the error handling path so the problem is visible to JS. There's also a few related cleanups included, and a new test case.
Changelog: [General] [Fixed] - If Error global is not callable when building an error, jsi will throw a JS exception back to JS code. #158
Reviewed By: tmikov, dulinriley
Differential Revision: D18796269
fbshipit-source-id: 57a45d144fa2ea5e78d18c27d3130611737dda96
Summary:
This parameter used to be useful for a custom format hermes was developing,
but since Hermes now outputs the Chrome format it isn't useful.
Chrome actually disallows prettified JSON, and requires a special version that is faster to parse.
Therefore, `compact` was the only supported mode.
Changelog: [Internal] Remove compact parameter from `createSnapshotToFile`
Reviewed By: willholen
Differential Revision: D17726742
fbshipit-source-id: 6f39af9046dff2f3b4fba822312a9a89c939ed89
Summary:
`xplat` targets add different deps based on what platform the target is being built for.
for anything using `fb_xplat`, we can put all ios supermodules in `fbobjc_labels` and all android sms in `fbandroid_labels`
There's some weirdness with python targets like `thrift_gen` in `/xplat/mobileconfig/tools/generator/gen-py/BUCK` that don't have platform-specific labels because the except_for list for `fbandroid` doesn't need the `fbsource//` prefix (see changes in `/ios/isolation/infra.mobileconfig.sm`)
Changelog: [Internal]
Reviewed By: shergin, joshleibsly
Differential Revision: D17884952
fbshipit-source-id: e245364cf515b75682990094d24f789d53b1f3f5
Summary: Make it possible for a Runtime implementation to provide its own JSON parsing, by making the method on Value call through Runtime, which now has the default implementation.
Reviewed By: tmikov
Differential Revision: D17637395
fbshipit-source-id: b8997f7d1721a7790326417f3abfa86c875923c9
Riley Dulin
empyrical
Eloy Durán
Marc Horowitz
Martin Sherburn
Ryan Tremblay
Christoph Purrer
Kevin Gozali
Pieter De Baets
Jacob Bower
David Detlefs
Valentin Shergin
Gabriel Nunes
Rachel Nabors
Radek Pietruszewski
Janette Cheng
Moti Zilberman
Haozhun Jin
Josh Leibsly
Emily Janzer
Yuki Ueda
Kudo Chien
Scott Kyle
Andres Suarez
Adam Ernst
Daniel Andersson
