Files
react-native/React/Base/RCTBridge.m
Tadeu Zagallo 3d6ffcf903 [ReactNative][Profiler] Fix initialize extra call + add popup
Summary:
@public

When the profile is initialized, it automatically hooks into every method of
the bridge modules, that was causing `+initialize` to be called twice.

Also add a popup to notify the user that the profile has been created.

Test Plan:
Run the UIExplorer, start the profiler, try to rage shake to open the dev menu
again. It should now work, and show an alertview with some information once the
profile is stopped.
2015-06-22 13:33:21 -08:00

1546 lines
50 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTBridge.h"
#import <dlfcn.h>
#import <objc/message.h>
#import <objc/runtime.h>
#import "RCTContextExecutor.h"
#import "RCTConvert.h"
#import "RCTEventDispatcher.h"
#import "RCTJavaScriptLoader.h"
#import "RCTKeyCommands.h"
#import "RCTLog.h"
#import "RCTPerfStats.h"
#import "RCTPerformanceLogger.h"
#import "RCTProfile.h"
#import "RCTRedBox.h"
#import "RCTRootView.h"
#import "RCTSourceCode.h"
#import "RCTSparseArray.h"
#import "RCTUtils.h"
NSString *const RCTReloadNotification = @"RCTReloadNotification";
NSString *const RCTJavaScriptDidLoadNotification = @"RCTJavaScriptDidLoadNotification";
NSString *const RCTJavaScriptDidFailToLoadNotification = @"RCTJavaScriptDidFailToLoadNotification";
/**
* Must be kept in sync with `MessageQueue.js`.
*/
typedef NS_ENUM(NSUInteger, RCTBridgeFields) {
RCTBridgeFieldRequestModuleIDs = 0,
RCTBridgeFieldMethodIDs,
RCTBridgeFieldParamss,
};
typedef NS_ENUM(NSUInteger, RCTJavaScriptFunctionKind) {
RCTJavaScriptFunctionKindNormal,
RCTJavaScriptFunctionKindAsync,
};
#define RCTAssertJSThread() \
RCTAssert(![NSStringFromClass([_javaScriptExecutor class]) isEqualToString:@"RCTContextExecutor"] || \
[[[NSThread currentThread] name] isEqualToString:@"com.facebook.React.JavaScript"], \
@"This method must be called on JS thread")
NSString *const RCTEnqueueNotification = @"RCTEnqueueNotification";
NSString *const RCTDequeueNotification = @"RCTDequeueNotification";
static NSDictionary *RCTModuleIDsByName;
static NSArray *RCTModuleNamesByID;
static NSArray *RCTModuleClassesByID;
void RCTRegisterModule(Class moduleClass)
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
RCTModuleIDsByName = [[NSMutableDictionary alloc] init];
RCTModuleNamesByID = [[NSMutableArray alloc] init];
RCTModuleClassesByID = [[NSMutableArray alloc] init];
});
RCTAssert([moduleClass conformsToProtocol:@protocol(RCTBridgeModule)],
@"%@ does not conform to the RCTBridgeModule protocol",
NSStringFromClass(moduleClass));
// Register module
NSString *moduleName = RCTBridgeModuleNameForClass(moduleClass);
((NSMutableDictionary *)RCTModuleIDsByName)[moduleName] = @(RCTModuleNamesByID.count);
[(NSMutableArray *)RCTModuleNamesByID addObject:moduleName];
[(NSMutableArray *)RCTModuleClassesByID addObject:moduleClass];
}
/**
* This function returns the module name for a given class.
*/
NSString *RCTBridgeModuleNameForClass(Class cls)
{
NSString *name = nil;
if ([cls respondsToSelector:@selector(moduleName)]) {
name = [cls valueForKey:@"moduleName"];
}
if ([name length] == 0) {
name = NSStringFromClass(cls);
}
if ([name hasPrefix:@"RK"]) {
name = [name stringByReplacingCharactersInRange:(NSRange){0,@"RK".length} withString:@"RCT"];
}
return name;
}
// TODO: Can we just replace RCTMakeError with this function instead?
static NSDictionary *RCTJSErrorFromNSError(NSError *error)
{
NSString *errorMessage;
NSArray *stackTrace = [NSThread callStackSymbols];
NSMutableDictionary *errorInfo =
[NSMutableDictionary dictionaryWithObject:stackTrace forKey:@"nativeStackIOS"];
if (error) {
errorMessage = error.localizedDescription ?: @"Unknown error from a native module";
errorInfo[@"domain"] = error.domain ?: RCTErrorDomain;
errorInfo[@"code"] = @(error.code);
} else {
errorMessage = @"Unknown error from a native module";
errorInfo[@"domain"] = RCTErrorDomain;
errorInfo[@"code"] = @-1;
}
return RCTMakeError(errorMessage, nil, errorInfo);
}
@class RCTBatchedBridge;
@interface RCTBridge ()
@property (nonatomic, strong) RCTBatchedBridge *batchedBridge;
@property (nonatomic, strong) RCTBridgeModuleProviderBlock moduleProvider;
- (void)_invokeAndProcessModule:(NSString *)module
method:(NSString *)method
arguments:(NSArray *)args
context:(NSNumber *)context;
@end
@interface RCTBatchedBridge : RCTBridge <RCTInvalidating>
@property (nonatomic, weak) RCTBridge *parentBridge;
- (instancetype)initWithParentBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
- (void)_actuallyInvokeAndProcessModule:(NSString *)module
method:(NSString *)method
arguments:(NSArray *)args
context:(NSNumber *)context;
@end
/**
* This private class is used as a container for exported method info
*/
@interface RCTModuleMethod : NSObject
@property (nonatomic, copy, readonly) NSString *moduleClassName;
@property (nonatomic, copy, readonly) NSString *JSMethodName;
@property (nonatomic, assign, readonly) SEL selector;
@property (nonatomic, assign, readonly) RCTJavaScriptFunctionKind functionKind;
@end
@implementation RCTModuleMethod
{
Class _moduleClass;
SEL _selector;
NSMethodSignature *_methodSignature;
NSArray *_argumentBlocks;
}
- (instancetype)initWithObjCMethodName:(NSString *)objCMethodName
JSMethodName:(NSString *)JSMethodName
moduleClass:(Class)moduleClass
{
if ((self = [super init])) {
static NSRegularExpression *typeRegex;
static NSRegularExpression *selectorRegex;
if (!typeRegex) {
NSString *unusedPattern = @"(?:(?:__unused|__attribute__\\(\\(unused\\)\\)))";
NSString *constPattern = @"(?:const)";
NSString *constUnusedPattern = [NSString stringWithFormat:@"(?:(?:%@|%@)\\s*)", unusedPattern, constPattern];
NSString *pattern = [NSString stringWithFormat:@"\\(%1$@?(\\w+?)(?:\\s*\\*)?%1$@?\\)", constUnusedPattern];
typeRegex = [[NSRegularExpression alloc] initWithPattern:pattern options:0 error:NULL];
selectorRegex = [[NSRegularExpression alloc] initWithPattern:@"(?<=:).*?(?=[a-zA-Z_]+:|$)" options:0 error:NULL];
}
NSMutableArray *argumentNames = [NSMutableArray array];
[typeRegex enumerateMatchesInString:objCMethodName options:0 range:NSMakeRange(0, objCMethodName.length) usingBlock:^(NSTextCheckingResult *result, __unused NSMatchingFlags flags, __unused BOOL *stop) {
NSString *argumentName = [objCMethodName substringWithRange:[result rangeAtIndex:1]];
[argumentNames addObject:argumentName];
}];
// Remove the parameters' type and name
objCMethodName = [selectorRegex stringByReplacingMatchesInString:objCMethodName
options:0
range:NSMakeRange(0, objCMethodName.length)
withTemplate:@""];
// Remove any spaces since `selector : (Type)name` is a valid syntax
objCMethodName = [objCMethodName stringByReplacingOccurrencesOfString:@" " withString:@""];
_moduleClass = moduleClass;
_moduleClassName = NSStringFromClass(_moduleClass);
_selector = NSSelectorFromString(objCMethodName);
_JSMethodName = JSMethodName.length > 0 ? JSMethodName : ({
NSString *methodName = NSStringFromSelector(_selector);
NSRange colonRange = [methodName rangeOfString:@":"];
if (colonRange.length) {
methodName = [methodName substringToIndex:colonRange.location];
}
methodName;
});
// Get method signature
_methodSignature = [_moduleClass instanceMethodSignatureForSelector:_selector];
// Process arguments
NSUInteger numberOfArguments = _methodSignature.numberOfArguments;
NSMutableArray *argumentBlocks = [[NSMutableArray alloc] initWithCapacity:numberOfArguments - 2];
#define RCT_ARG_BLOCK(_logic) \
[argumentBlocks addObject:^(__unused RCTBridge *bridge, __unused NSNumber *context, NSInvocation *invocation, NSUInteger index, id json) { \
_logic \
[invocation setArgument:&value atIndex:index]; \
}]; \
void (^addBlockArgument)(void) = ^{
RCT_ARG_BLOCK(
if (RCT_DEBUG && json && ![json isKindOfClass:[NSNumber class]]) {
RCTLogError(@"Argument %tu (%@) of %@.%@ should be a number", index,
json, RCTBridgeModuleNameForClass(_moduleClass), _JSMethodName);
return;
}
// Marked as autoreleasing, because NSInvocation doesn't retain arguments
__autoreleasing id value = (json ? ^(NSArray *args) {
[bridge _invokeAndProcessModule:@"BatchedBridge"
method:@"invokeCallbackAndReturnFlushedQueue"
arguments:@[json, args]
context:context];
} : ^(__unused NSArray *unused) {});
)
};
void (^defaultCase)(const char *) = ^(const char *argumentType) {
static const char *blockType = @encode(typeof(^{}));
if (!strcmp(argumentType, blockType)) {
addBlockArgument();
} else {
RCT_ARG_BLOCK( id value = json; )
}
};
for (NSUInteger i = 2; i < numberOfArguments; i++) {
const char *argumentType = [_methodSignature getArgumentTypeAtIndex:i];
NSString *argumentName = argumentNames[i - 2];
SEL selector = NSSelectorFromString([argumentName stringByAppendingString:@":"]);
if ([RCTConvert respondsToSelector:selector]) {
switch (argumentType[0]) {
#define RCT_CONVERT_CASE(_value, _type) \
case _value: { \
_type (*convert)(id, SEL, id) = (typeof(convert))objc_msgSend; \
RCT_ARG_BLOCK( _type value = convert([RCTConvert class], selector, json); ) \
break; \
}
RCT_CONVERT_CASE(':', SEL)
RCT_CONVERT_CASE('*', const char *)
RCT_CONVERT_CASE('c', char)
RCT_CONVERT_CASE('C', unsigned char)
RCT_CONVERT_CASE('s', short)
RCT_CONVERT_CASE('S', unsigned short)
RCT_CONVERT_CASE('i', int)
RCT_CONVERT_CASE('I', unsigned int)
RCT_CONVERT_CASE('l', long)
RCT_CONVERT_CASE('L', unsigned long)
RCT_CONVERT_CASE('q', long long)
RCT_CONVERT_CASE('Q', unsigned long long)
RCT_CONVERT_CASE('f', float)
RCT_CONVERT_CASE('d', double)
RCT_CONVERT_CASE('B', BOOL)
RCT_CONVERT_CASE('@', id)
RCT_CONVERT_CASE('^', void *)
case '{': {
[argumentBlocks addObject:^(__unused RCTBridge *bridge, __unused NSNumber *context, NSInvocation *invocation, NSUInteger index, id json) {
NSMethodSignature *methodSignature = [RCTConvert methodSignatureForSelector:selector];
void *returnValue = malloc(methodSignature.methodReturnLength);
NSInvocation *_invocation = [NSInvocation invocationWithMethodSignature:methodSignature];
[_invocation setTarget:[RCTConvert class]];
[_invocation setSelector:selector];
[_invocation setArgument:&json atIndex:2];
[_invocation invoke];
[_invocation getReturnValue:returnValue];
[invocation setArgument:returnValue atIndex:index];
free(returnValue);
}];
break;
}
default:
defaultCase(argumentType);
}
} else if ([argumentName isEqualToString:@"RCTResponseSenderBlock"]) {
addBlockArgument();
} else if ([argumentName isEqualToString:@"RCTPromiseResolveBlock"]) {
RCTAssert(i == numberOfArguments - 2,
@"The RCTPromiseResolveBlock must be the second to last parameter in -[%@ %@]",
_moduleClassName, objCMethodName);
RCT_ARG_BLOCK(
if (RCT_DEBUG && ![json isKindOfClass:[NSNumber class]]) {
RCTLogError(@"Argument %tu (%@) of %@.%@ must be a promise resolver ID", index,
json, RCTBridgeModuleNameForClass(_moduleClass), _JSMethodName);
return;
}
// Marked as autoreleasing, because NSInvocation doesn't retain arguments
__autoreleasing RCTPromiseResolveBlock value = (^(id result) {
NSArray *arguments = result ? @[result] : @[];
[bridge _invokeAndProcessModule:@"BatchedBridge"
method:@"invokeCallbackAndReturnFlushedQueue"
arguments:@[json, arguments]
context:context];
});
)
_functionKind = RCTJavaScriptFunctionKindAsync;
} else if ([argumentName isEqualToString:@"RCTPromiseRejectBlock"]) {
RCTAssert(i == numberOfArguments - 1,
@"The RCTPromiseRejectBlock must be the last parameter in -[%@ %@]",
_moduleClassName, objCMethodName);
RCT_ARG_BLOCK(
if (RCT_DEBUG && ![json isKindOfClass:[NSNumber class]]) {
RCTLogError(@"Argument %tu (%@) of %@.%@ must be a promise rejecter ID", index,
json, RCTBridgeModuleNameForClass(_moduleClass), _JSMethodName);
return;
}
// Marked as autoreleasing, because NSInvocation doesn't retain arguments
__autoreleasing RCTPromiseRejectBlock value = (^(NSError *error) {
NSDictionary *errorJSON = RCTJSErrorFromNSError(error);
[bridge _invokeAndProcessModule:@"BatchedBridge"
method:@"invokeCallbackAndReturnFlushedQueue"
arguments:@[json, @[errorJSON]]
context:context];
});
)
_functionKind = RCTJavaScriptFunctionKindAsync;
} else {
// Unknown argument type
RCTLogError(@"Unknown argument type '%@' in method %@. Extend RCTConvert"
" to support this type.", argumentName, [self methodName]);
}
}
_argumentBlocks = [argumentBlocks copy];
}
return self;
}
- (void)invokeWithBridge:(RCTBridge *)bridge
module:(id)module
arguments:(NSArray *)arguments
context:(NSNumber *)context
{
if (RCT_DEBUG) {
// Sanity check
RCTAssert([module class] == _moduleClass, @"Attempted to invoke method \
%@ on a module of class %@", [self methodName], [module class]);
// Safety check
if (arguments.count != _argumentBlocks.count) {
NSInteger actualCount = arguments.count;
NSInteger expectedCount = _argumentBlocks.count;
// Subtract the implicit Promise resolver and rejecter functions for implementations of async functions
if (_functionKind == RCTJavaScriptFunctionKindAsync) {
actualCount -= 2;
expectedCount -= 2;
}
RCTLogError(@"%@.%@ was called with %zd arguments, but expects %zd",
RCTBridgeModuleNameForClass(_moduleClass), _JSMethodName,
actualCount, expectedCount);
return;
}
}
// Create invocation (we can't re-use this as it wouldn't be thread-safe)
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:_methodSignature];
[invocation setArgument:&_selector atIndex:1];
[invocation retainArguments];
// Set arguments
NSUInteger index = 0;
for (id json in arguments) {
id arg = RCTNilIfNull(json);
void (^block)(RCTBridge *, NSNumber *, NSInvocation *, NSUInteger, id) = _argumentBlocks[index];
block(bridge, context, invocation, index + 2, arg);
index++;
}
// Invoke method
[invocation invokeWithTarget:module];
}
- (NSString *)methodName
{
return [NSString stringWithFormat:@"-[%@ %@]", _moduleClass,
NSStringFromSelector(_selector)];
}
- (NSString *)description
{
return [NSString stringWithFormat:@"<%@: %p; exports %@ as %@();>",
[self class], self, [self methodName], _JSMethodName];
}
@end
/**
* This function parses the exported methods inside RCTBridgeModules and
* generates an array of arrays of RCTModuleMethod objects, keyed
* by module index.
*/
static RCTSparseArray *RCTExportedMethodsByModuleID(void)
{
static RCTSparseArray *methodsByModuleID;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
methodsByModuleID = [[RCTSparseArray alloc] initWithCapacity:[RCTModuleClassesByID count]];
[RCTModuleClassesByID enumerateObjectsUsingBlock:
^(Class moduleClass, NSUInteger moduleID, __unused BOOL *stop) {
methodsByModuleID[moduleID] = [[NSMutableArray alloc] init];
unsigned int methodCount;
Method *methods = class_copyMethodList(object_getClass(moduleClass), &methodCount);
for (unsigned int i = 0; i < methodCount; i++) {
Method method = methods[i];
SEL selector = method_getName(method);
if ([NSStringFromSelector(selector) hasPrefix:@"__rct_export__"]) {
IMP imp = method_getImplementation(method);
NSArray *entries = ((NSArray *(*)(id, SEL))imp)(moduleClass, selector);
RCTModuleMethod *moduleMethod =
[[RCTModuleMethod alloc] initWithObjCMethodName:entries[1]
JSMethodName:entries[0]
moduleClass:moduleClass];
[methodsByModuleID[moduleID] addObject:moduleMethod];
}
}
free(methods);
}];
});
return methodsByModuleID;
}
/**
* This constructs the remote modules configuration data structure,
* which represents the native modules and methods that will be called
* by JS. A numeric ID is assigned to each module and method, which will
* be used to communicate via the bridge. The structure of each
* module is as follows:
*
* "ModuleName1": {
* "moduleID": 0,
* "methods": {
* "methodName1": {
* "methodID": 0,
* "type": "remote"
* },
* "methodName2": {
* "methodID": 1,
* "type": "remoteAsync"
* },
* etc...
* },
* "constants": {
* ...
* }
* },
* etc...
*/
static NSDictionary *RCTRemoteModulesConfig(NSDictionary *modulesByName)
{
static NSMutableDictionary *remoteModuleConfigByClassName;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
remoteModuleConfigByClassName = [[NSMutableDictionary alloc] init];
[RCTModuleClassesByID enumerateObjectsUsingBlock:
^(Class moduleClass, NSUInteger moduleID, __unused BOOL *stop) {
NSArray *methods = RCTExportedMethodsByModuleID()[moduleID];
NSMutableDictionary *methodsByName = [NSMutableDictionary dictionaryWithCapacity:methods.count];
[methods enumerateObjectsUsingBlock:
^(RCTModuleMethod *method, NSUInteger methodID, __unused BOOL *_stop) {
methodsByName[method.JSMethodName] = @{
@"methodID": @(methodID),
@"type": method.functionKind == RCTJavaScriptFunctionKindAsync ? @"remoteAsync" : @"remote",
};
}];
NSDictionary *module = @{
@"moduleID": @(moduleID),
@"methods": methodsByName
};
remoteModuleConfigByClassName[NSStringFromClass(moduleClass)] = module;
}];
});
// Create config
NSMutableDictionary *moduleConfig = [[NSMutableDictionary alloc] init];
[modulesByName enumerateKeysAndObjectsUsingBlock:
^(NSString *moduleName, id<RCTBridgeModule> module, __unused BOOL *stop) {
// Add constants
NSMutableDictionary *config = remoteModuleConfigByClassName[NSStringFromClass([module class])];
if ([module respondsToSelector:@selector(constantsToExport)]) {
NSDictionary *constants = [module constantsToExport];
if (constants) {
NSMutableDictionary *mutableConfig = [NSMutableDictionary dictionaryWithDictionary:config];
mutableConfig[@"constants"] = constants; // There's no real need to copy this
config = mutableConfig; // Nor this - receiver is unlikely to mutate it
}
}
moduleConfig[moduleName] = config;
}];
return moduleConfig;
}
@interface RCTFrameUpdate (Private)
- (instancetype)initWithDisplayLink:(CADisplayLink *)displayLink;
@end
@implementation RCTFrameUpdate
- (instancetype)initWithDisplayLink:(CADisplayLink *)displayLink
{
if ((self = [super init])) {
_timestamp = displayLink.timestamp;
_deltaTime = displayLink.duration;
}
return self;
}
@end
@implementation RCTBridge
static id<RCTJavaScriptExecutor> _latestJSExecutor;
dispatch_queue_t RCTJSThread;
+ (void)initialize
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
// Set up JS thread
RCTJSThread = (id)kCFNull;
#if RCT_DEBUG
// Set up module classes
static unsigned int classCount;
Class *classes = objc_copyClassList(&classCount);
for (unsigned int i = 0; i < classCount; i++)
{
Class cls = classes[i];
Class superclass = cls;
while (superclass)
{
if (class_conformsToProtocol(superclass, @protocol(RCTBridgeModule)))
{
if (![RCTModuleClassesByID containsObject:cls]) {
RCTLogError(@"Class %@ was not exported. Did you forget to use "
"RCT_EXPORT_MODULE()?", NSStringFromClass(cls));
}
break;
}
superclass = class_getSuperclass(superclass);
}
}
free(classes);
#endif
});
}
- (instancetype)initWithBundleURL:(NSURL *)bundleURL
moduleProvider:(RCTBridgeModuleProviderBlock)block
launchOptions:(NSDictionary *)launchOptions
{
RCTAssertMainThread();
if ((self = [super init])) {
RCTPerformanceLoggerStart(RCTPLTTI);
_bundleURL = bundleURL;
_moduleProvider = block;
_launchOptions = [launchOptions copy];
[self bindKeys];
[self setUp];
}
return self;
}
RCT_NOT_IMPLEMENTED(-init)
- (void)dealloc
{
/**
* This runs only on the main thread, but crashes the subclass
* RCTAssertMainThread();
*/
[[NSNotificationCenter defaultCenter] removeObserver:self];
[self invalidate];
}
- (void)bindKeys
{
RCTAssertMainThread();
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(reload)
name:RCTReloadNotification
object:nil];
#if TARGET_IPHONE_SIMULATOR
__weak RCTBridge *weakSelf = self;
RCTKeyCommands *commands = [RCTKeyCommands sharedInstance];
// reload in current mode
[commands registerKeyCommandWithInput:@"r"
modifierFlags:UIKeyModifierCommand
action:^(__unused UIKeyCommand *command) {
[weakSelf reload];
}];
#endif
}
- (RCTEventDispatcher *)eventDispatcher
{
return self.modules[RCTBridgeModuleNameForClass([RCTEventDispatcher class])];
}
- (void)reload
{
/**
* AnyThread
*/
dispatch_async(dispatch_get_main_queue(), ^{
[self invalidate];
[self setUp];
});
}
- (void)setUp
{
RCTAssertMainThread();
_batchedBridge = [[RCTBatchedBridge alloc] initWithParentBridge:self];
}
- (BOOL)isLoading
{
return _batchedBridge.loading;
}
- (BOOL)isValid
{
return _batchedBridge.isValid;
}
- (void)invalidate
{
RCTAssertMainThread();
[_batchedBridge invalidate];
_batchedBridge = nil;
}
+ (void)logMessage:(NSString *)message level:(NSString *)level
{
dispatch_async(dispatch_get_main_queue(), ^{
if (!_latestJSExecutor.isValid) {
return;
}
[_latestJSExecutor executeJSCall:@"RCTLog"
method:@"logIfNoNativeHook"
arguments:@[level, message]
context:RCTGetExecutorID(_latestJSExecutor)
callback:^(__unused id json, __unused NSError *error) {}];
});
}
- (NSDictionary *)modules
{
return _batchedBridge.modules;
}
#define RCT_INNER_BRIDGE_ONLY(...) \
- (void)__VA_ARGS__ \
{ \
RCTLogMustFix(@"Called method \"%@\" on top level bridge. This method should \
only be called from bridge instance in a bridge module", @(__func__)); \
}
- (void)enqueueJSCall:(NSString *)moduleDotMethod args:(NSArray *)args
{
[self.batchedBridge enqueueJSCall:moduleDotMethod args:args];
}
RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
method:(__unused NSString *)method
arguments:(__unused NSArray *)args
context:(__unused NSNumber *)context)
@end
@implementation RCTBatchedBridge
{
BOOL _loading;
__weak id<RCTJavaScriptExecutor> _javaScriptExecutor;
RCTSparseArray *_modulesByID;
RCTSparseArray *_queuesByID;
NSDictionary *_modulesByName;
CADisplayLink *_mainDisplayLink;
CADisplayLink *_jsDisplayLink;
NSMutableSet *_frameUpdateObservers;
NSMutableArray *_scheduledCalls;
RCTSparseArray *_scheduledCallbacks;
}
@synthesize valid = _valid;
- (instancetype)initWithParentBridge:(RCTBridge *)bridge
{
RCTAssertMainThread();
RCTAssertParam(bridge);
if ((self = [super initWithBundleURL:bridge.bundleURL
moduleProvider:bridge.moduleProvider
launchOptions:bridge.launchOptions])) {
_parentBridge = bridge;
/**
* Set Initial State
*/
_valid = YES;
_loading = YES;
_frameUpdateObservers = [[NSMutableSet alloc] init];
_scheduledCalls = [[NSMutableArray alloc] init];
_scheduledCallbacks = [[RCTSparseArray alloc] init];
_queuesByID = [[RCTSparseArray alloc] init];
_jsDisplayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(_jsThreadUpdate:)];
if (RCT_DEV) {
_mainDisplayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(_mainThreadUpdate:)];
[_mainDisplayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes];
}
/**
* Initialize and register bridge modules *before* adding the display link
* so we don't have threading issues
*/
[self registerModules];
/**
* Start the application script
*/
[self initJS];
}
return self;
}
- (instancetype)initWithBundleURL:(__unused NSURL *)bundleURL
moduleProvider:(__unused RCTBridgeModuleProviderBlock)block
launchOptions:(__unused NSDictionary *)launchOptions
{
return [self initWithParentBridge:nil];
}
/**
* Override to ensure that we won't create another nested bridge
*/
- (void)setUp {}
- (void)reload
{
[_parentBridge reload];
}
- (Class)executorClass
{
return _parentBridge.executorClass ?: [RCTContextExecutor class];
}
- (void)setExecutorClass:(Class)executorClass
{
RCTAssertMainThread();
_parentBridge.executorClass = executorClass;
}
- (BOOL)isLoading
{
return _loading;
}
- (BOOL)isValid
{
return _valid;
}
- (void)registerModules
{
RCTAssertMainThread();
// Register passed-in module instances
NSMutableDictionary *preregisteredModules = [[NSMutableDictionary alloc] init];
for (id<RCTBridgeModule> module in self.moduleProvider ? self.moduleProvider() : nil) {
preregisteredModules[RCTBridgeModuleNameForClass([module class])] = module;
}
// Instantiate modules
_modulesByID = [[RCTSparseArray alloc] init];
NSMutableDictionary *modulesByName = [preregisteredModules mutableCopy];
[RCTModuleClassesByID enumerateObjectsUsingBlock:
^(Class moduleClass, NSUInteger moduleID, __unused BOOL *stop) {
NSString *moduleName = RCTModuleNamesByID[moduleID];
// Check if module instance has already been registered for this name
id<RCTBridgeModule> module = modulesByName[moduleName];
if (module) {
// Preregistered instances takes precedence, no questions asked
if (!preregisteredModules[moduleName]) {
// It's OK to have a name collision as long as the second instance is nil
RCTAssert([[moduleClass alloc] init] == nil,
@"Attempted to register RCTBridgeModule class %@ for the name "
"'%@', but name was already registered by class %@", moduleClass,
moduleName, [modulesByName[moduleName] class]);
}
if ([module class] != moduleClass) {
RCTLogInfo(@"RCTBridgeModule of class %@ with name '%@' was encountered "
"in the project, but name was already registered by class %@."
"That's fine if it's intentional - just letting you know.",
moduleClass, moduleName, [modulesByName[moduleName] class]);
}
} else {
// Module name hasn't been used before, so go ahead and instantiate
module = [[moduleClass alloc] init];
}
if (module) {
// Store module instance
_modulesByID[moduleID] = modulesByName[moduleName] = module;
}
}];
// Store modules
_modulesByName = [modulesByName copy];
/**
* The executor is a bridge module, wait for it to be created and set it before
* any other module has access to the bridge
*/
_javaScriptExecutor = _modulesByName[RCTBridgeModuleNameForClass(self.executorClass)];
_latestJSExecutor = _javaScriptExecutor;
RCTSetExecutorID(_javaScriptExecutor);
[_javaScriptExecutor setUp];
// Set bridge
for (id<RCTBridgeModule> module in _modulesByName.allValues) {
if ([module respondsToSelector:@selector(setBridge:)]) {
module.bridge = self;
}
}
// Set/get method queues
[_modulesByID enumerateObjectsUsingBlock:^(id<RCTBridgeModule> module, NSNumber *moduleID, __unused BOOL *stop) {
dispatch_queue_t queue = nil;
BOOL implementsMethodQueue = [module respondsToSelector:@selector(methodQueue)];
if (implementsMethodQueue) {
queue = [module methodQueue];
}
if (!queue) {
// Need to cache queueNames because they aren't retained by dispatch_queue
static NSMutableDictionary *queueNames;
if (!queueNames) {
queueNames = [[NSMutableDictionary alloc] init];
}
NSString *moduleName = RCTBridgeModuleNameForClass([module class]);
NSString *queueName = queueNames[moduleName];
if (!queueName) {
queueName = [NSString stringWithFormat:@"com.facebook.React.%@Queue", moduleName];
queueNames[moduleName] = queueName;
}
// Create new queue
queue = dispatch_queue_create(queueName.UTF8String, DISPATCH_QUEUE_SERIAL);
// assign it to the module
if (implementsMethodQueue) {
@try {
[(id)module setValue:queue forKey:@"methodQueue"];
}
@catch (NSException *exception) {
RCTLogError(@"%@ is returning nil for it's methodQueue, which is not "
"permitted. You must either return a pre-initialized "
"queue, or @synthesize the methodQueue to let the bridge "
"create a queue for you.", moduleName);
}
}
}
_queuesByID[moduleID] = queue;
if ([module conformsToProtocol:@protocol(RCTFrameUpdateObserver)]) {
[_frameUpdateObservers addObject:module];
}
}];
}
- (void)initJS
{
RCTAssertMainThread();
// Inject module data into JS context
NSString *configJSON = RCTJSONStringify(@{
@"remoteModuleConfig": RCTRemoteModulesConfig(_modulesByName),
}, NULL);
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
[_javaScriptExecutor injectJSONText:configJSON
asGlobalObjectNamed:@"__fbBatchedBridgeConfig" callback:
^(__unused id err) {
dispatch_semaphore_signal(semaphore);
}];
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_NOW);
NSURL *bundleURL = _parentBridge.bundleURL;
if (_javaScriptExecutor == nil) {
/**
* HACK (tadeu): If it failed to connect to the debugger, set loading to NO
* so we can attempt to reload again.
*/
_loading = NO;
} else if (!bundleURL) {
// Allow testing without a script
dispatch_async(dispatch_get_main_queue(), ^{
_loading = NO;
[[NSNotificationCenter defaultCenter] postNotificationName:RCTJavaScriptDidLoadNotification
object:_parentBridge
userInfo:@{ @"bridge": self }];
});
} else {
RCTProfileBeginEvent();
RCTPerformanceLoggerStart(RCTPLScriptDownload);
RCTJavaScriptLoader *loader = [[RCTJavaScriptLoader alloc] initWithBridge:self];
[loader loadBundleAtURL:bundleURL onComplete:^(NSError *error, NSString *script) {
RCTPerformanceLoggerEnd(RCTPLScriptDownload);
RCTProfileEndEvent(@"JavaScript dowload", @"init,download", @[]);
_loading = NO;
if (!self.isValid) {
return;
}
[[RCTRedBox sharedInstance] dismiss];
RCTSourceCode *sourceCodeModule = self.modules[RCTBridgeModuleNameForClass([RCTSourceCode class])];
sourceCodeModule.scriptURL = bundleURL;
sourceCodeModule.scriptText = script;
if (error) {
NSArray *stack = [error userInfo][@"stack"];
if (stack) {
[[RCTRedBox sharedInstance] showErrorMessage:[error localizedDescription]
withStack:stack];
} else {
[[RCTRedBox sharedInstance] showErrorMessage:[error localizedDescription]
withDetails:[error localizedFailureReason]];
}
NSDictionary *userInfo = @{@"bridge": self, @"error": error};
[[NSNotificationCenter defaultCenter] postNotificationName:RCTJavaScriptDidFailToLoadNotification
object:_parentBridge
userInfo:userInfo];
} else {
[self enqueueApplicationScript:script url:bundleURL onComplete:^(NSError *loadError) {
if (!loadError) {
/**
* Register the display link to start sending js calls after everything
* is setup
*/
NSRunLoop *targetRunLoop = [_javaScriptExecutor isKindOfClass:[RCTContextExecutor class]] ? [NSRunLoop currentRunLoop] : [NSRunLoop mainRunLoop];
[_jsDisplayLink addToRunLoop:targetRunLoop forMode:NSRunLoopCommonModes];
[[NSNotificationCenter defaultCenter] postNotificationName:RCTJavaScriptDidLoadNotification
object:_parentBridge
userInfo:@{ @"bridge": self }];
} else {
[[RCTRedBox sharedInstance] showErrorMessage:[loadError localizedDescription]
withDetails:[loadError localizedFailureReason]];
}
}];
}
}];
}
}
- (NSDictionary *)modules
{
RCTAssert(!self.isValid || _modulesByName != nil, @"Bridge modules have not yet been initialized. "
"You may be trying to access a module too early in the startup procedure.");
return _modulesByName;
}
#pragma mark - RCTInvalidating
- (void)invalidate
{
if (!self.isValid) {
return;
}
RCTAssertMainThread();
_valid = NO;
if (_latestJSExecutor == _javaScriptExecutor) {
_latestJSExecutor = nil;
}
void (^mainThreadInvalidate)(void) = ^{
RCTAssertMainThread();
[_mainDisplayLink invalidate];
_mainDisplayLink = nil;
// Invalidate modules
dispatch_group_t group = dispatch_group_create();
for (id target in _modulesByID.allObjects) {
if ([target respondsToSelector:@selector(invalidate)]) {
[self dispatchBlock:^{
[(id<RCTInvalidating>)target invalidate];
} forModule:target dispatchGroup:group];
}
_queuesByID[RCTModuleIDsByName[RCTBridgeModuleNameForClass([target class])]] = nil;
}
dispatch_group_notify(group, dispatch_get_main_queue(), ^{
_queuesByID = nil;
_modulesByID = nil;
_modulesByName = nil;
_frameUpdateObservers = nil;
});
};
if (!_javaScriptExecutor) {
// No JS thread running
mainThreadInvalidate();
return;
}
[_javaScriptExecutor executeBlockOnJavaScriptQueue:^{
/**
* JS Thread deallocations
*/
[_javaScriptExecutor invalidate];
_javaScriptExecutor = nil;
[_jsDisplayLink invalidate];
_jsDisplayLink = nil;
/**
* Main Thread deallocations
*/
dispatch_async(dispatch_get_main_queue(), mainThreadInvalidate);
}];
}
#pragma mark - RCTBridge methods
/**
* Public. Can be invoked from any thread.
*/
- (void)enqueueJSCall:(NSString *)moduleDotMethod args:(NSArray *)args
{
NSArray *ids = [moduleDotMethod componentsSeparatedByString:@"."];
[self _invokeAndProcessModule:@"BatchedBridge"
method:@"callFunctionReturnFlushedQueue"
arguments:@[ids[0], ids[1], args ?: @[]]
context:RCTGetExecutorID(_javaScriptExecutor)];
}
/**
* Private hack to support `setTimeout(fn, 0)`
*/
- (void)_immediatelyCallTimer:(NSNumber *)timer
{
RCTAssertJSThread();
dispatch_block_t block = ^{
[self _actuallyInvokeAndProcessModule:@"BatchedBridge"
method:@"callFunctionReturnFlushedQueue"
arguments:@[@"JSTimersExecution", @"callTimers", @[@[timer]]]
context:RCTGetExecutorID(_javaScriptExecutor)];
};
if ([_javaScriptExecutor respondsToSelector:@selector(executeAsyncBlockOnJavaScriptQueue:)]) {
[_javaScriptExecutor executeAsyncBlockOnJavaScriptQueue:block];
} else {
[_javaScriptExecutor executeBlockOnJavaScriptQueue:block];
}
}
- (void)enqueueApplicationScript:(NSString *)script url:(NSURL *)url onComplete:(RCTJavaScriptCompleteBlock)onComplete
{
RCTAssert(onComplete != nil, @"onComplete block passed in should be non-nil");
RCTProfileBeginFlowEvent();
[_javaScriptExecutor executeApplicationScript:script sourceURL:url onComplete:^(NSError *scriptLoadError) {
RCTProfileEndFlowEvent();
RCTAssertJSThread();
if (scriptLoadError) {
onComplete(scriptLoadError);
return;
}
RCTProfileBeginEvent();
NSNumber *context = RCTGetExecutorID(_javaScriptExecutor);
[_javaScriptExecutor executeJSCall:@"BatchedBridge"
method:@"flushedQueue"
arguments:@[]
context:context
callback:^(id json, NSError *error) {
RCTProfileEndEvent(@"FetchApplicationScriptCallbacks", @"js_call,init", @{
@"json": RCTNullIfNil(json),
@"error": RCTNullIfNil(error),
});
[self _handleBuffer:json context:context];
onComplete(error);
}];
}];
}
#pragma mark - Payload Generation
- (void)dispatchBlock:(dispatch_block_t)block
forModule:(id<RCTBridgeModule>)module
{
[self dispatchBlock:block forModule:module dispatchGroup:NULL];
}
- (void)dispatchBlock:(dispatch_block_t)block
forModule:(id<RCTBridgeModule>)module
dispatchGroup:(dispatch_group_t)group
{
[self dispatchBlock:block
forModuleID:RCTModuleIDsByName[RCTBridgeModuleNameForClass([module class])]
dispatchGroup:group];
}
- (void)dispatchBlock:(dispatch_block_t)block
forModuleID:(NSNumber *)moduleID
{
[self dispatchBlock:block forModuleID:moduleID dispatchGroup:NULL];
}
- (void)dispatchBlock:(dispatch_block_t)block
forModuleID:(NSNumber *)moduleID
dispatchGroup:(dispatch_group_t)group
{
RCTAssertJSThread();
id queue = nil;
if (moduleID) {
queue = _queuesByID[moduleID];
}
if (queue == RCTJSThread) {
[_javaScriptExecutor executeBlockOnJavaScriptQueue:block];
} else if (queue) {
if (group != NULL) {
dispatch_group_async(group, queue, block);
} else {
dispatch_async(queue, block);
}
}
}
/**
* Called by enqueueJSCall from any thread, or from _immediatelyCallTimer,
* on the JS thread, but only in non-batched mode.
*/
- (void)_invokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args context:(NSNumber *)context
{
/**
* AnyThread
*/
RCTProfileBeginFlowEvent();
__weak RCTBatchedBridge *weakSelf = self;
[_javaScriptExecutor executeBlockOnJavaScriptQueue:^{
RCTProfileEndFlowEvent();
RCTProfileBeginEvent();
RCTBatchedBridge *strongSelf = weakSelf;
if (!strongSelf.isValid || !strongSelf->_scheduledCallbacks || !strongSelf->_scheduledCalls) {
return;
}
RCT_IF_DEV(NSNumber *callID = _RCTProfileBeginFlowEvent();)
id call = @{
@"js_args": @{
@"module": module,
@"method": method,
@"args": args,
},
@"context": context ?: @0,
RCT_IF_DEV(@"call_id": callID,)
};
if ([method isEqualToString:@"invokeCallbackAndReturnFlushedQueue"]) {
strongSelf->_scheduledCallbacks[args[0]] = call;
} else {
[strongSelf->_scheduledCalls addObject:call];
}
RCTProfileEndEvent(@"enqueue_call", @"objc_call", call);
}];
}
- (void)_actuallyInvokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args context:(NSNumber *)context
{
RCTAssertJSThread();
[[NSNotificationCenter defaultCenter] postNotificationName:RCTEnqueueNotification object:nil userInfo:nil];
RCTJavaScriptCallback processResponse = ^(id json, __unused NSError *error) {
if (!self.isValid) {
return;
}
[[NSNotificationCenter defaultCenter] postNotificationName:RCTDequeueNotification object:nil userInfo:nil];
[self _handleBuffer:json context:context];
};
[_javaScriptExecutor executeJSCall:module
method:method
arguments:args
context:context
callback:processResponse];
}
#pragma mark - Payload Processing
- (void)_handleBuffer:(id)buffer context:(NSNumber *)context
{
RCTAssertJSThread();
if (buffer == nil || buffer == (id)kCFNull) {
return;
}
NSArray *requestsArray = [RCTConvert NSArray:buffer];
#if RCT_DEBUG
if (![buffer isKindOfClass:[NSArray class]]) {
RCTLogError(@"Buffer must be an instance of NSArray, got %@", NSStringFromClass([buffer class]));
return;
}
for (NSUInteger fieldIndex = RCTBridgeFieldRequestModuleIDs; fieldIndex <= RCTBridgeFieldParamss; fieldIndex++) {
id field = [requestsArray objectAtIndex:fieldIndex];
if (![field isKindOfClass:[NSArray class]]) {
RCTLogError(@"Field at index %zd in buffer must be an instance of NSArray, got %@", fieldIndex, NSStringFromClass([field class]));
return;
}
}
#endif
NSArray *moduleIDs = requestsArray[RCTBridgeFieldRequestModuleIDs];
NSArray *methodIDs = requestsArray[RCTBridgeFieldMethodIDs];
NSArray *paramsArrays = requestsArray[RCTBridgeFieldParamss];
NSUInteger numRequests = [moduleIDs count];
if (RCT_DEBUG && (numRequests != methodIDs.count || numRequests != paramsArrays.count)) {
RCTLogError(@"Invalid data message - all must be length: %zd", numRequests);
return;
}
NSMapTable *buckets = [[NSMapTable alloc] initWithKeyOptions:NSPointerFunctionsStrongMemory valueOptions:NSPointerFunctionsStrongMemory capacity:_queuesByID.count];
for (NSUInteger i = 0; i < numRequests; i++) {
id queue = RCTNullIfNil(_queuesByID[moduleIDs[i]]);
NSMutableOrderedSet *set = [buckets objectForKey:queue];
if (!set) {
set = [[NSMutableOrderedSet alloc] init];
[buckets setObject:set forKey:queue];
}
[set addObject:@(i)];
}
for (id queue in buckets) {
RCTProfileBeginFlowEvent();
dispatch_block_t block = ^{
RCTProfileEndFlowEvent();
RCTProfileBeginEvent();
NSOrderedSet *calls = [buckets objectForKey:queue];
@autoreleasepool {
for (NSNumber *indexObj in calls) {
NSUInteger index = indexObj.unsignedIntegerValue;
[self _handleRequestNumber:index
moduleID:[moduleIDs[index] integerValue]
methodID:[methodIDs[index] integerValue]
params:paramsArrays[index]
context:context];
}
}
RCTProfileEndEvent(RCTCurrentThreadName(), @"objc_call,dispatch_async", @{ @"calls": @(calls.count) });
};
if (queue == RCTJSThread) {
[_javaScriptExecutor executeBlockOnJavaScriptQueue:block];
} else if (queue) {
dispatch_async(queue, block);
}
}
// TODO: batchDidComplete is only used by RCTUIManager - can we eliminate this special case?
[_modulesByID enumerateObjectsUsingBlock:
^(id<RCTBridgeModule> module, NSNumber *moduleID, __unused BOOL *stop) {
if ([module respondsToSelector:@selector(batchDidComplete)]) {
[self dispatchBlock:^{
[module batchDidComplete];
} forModuleID:moduleID];
}
}];
}
- (BOOL)_handleRequestNumber:(NSUInteger)i
moduleID:(NSUInteger)moduleID
methodID:(NSUInteger)methodID
params:(NSArray *)params
context:(NSNumber *)context
{
if (!self.isValid) {
return NO;
}
if (RCT_DEBUG && ![params isKindOfClass:[NSArray class]]) {
RCTLogError(@"Invalid module/method/params tuple for request #%zd", i);
return NO;
}
// Look up method
NSArray *methods = RCTExportedMethodsByModuleID()[moduleID];
if (RCT_DEBUG && methodID >= methods.count) {
RCTLogError(@"Unknown methodID: %zd for module: %zd (%@)", methodID, moduleID, RCTModuleNamesByID[moduleID]);
return NO;
}
RCTProfileBeginEvent();
RCTModuleMethod *method = methods[methodID];
// Look up module
id module = self->_modulesByID[moduleID];
if (RCT_DEBUG && !module) {
RCTLogError(@"No module found for name '%@'", RCTModuleNamesByID[moduleID]);
return NO;
}
@try {
[method invokeWithBridge:self module:module arguments:params context:context];
}
@catch (NSException *exception) {
RCTLogError(@"Exception thrown while invoking %@ on target %@ with params %@: %@", method.JSMethodName, module, params, exception);
if (!RCT_DEBUG && [exception.name rangeOfString:@"Unhandled JS Exception"].location != NSNotFound) {
@throw exception;
}
}
RCTProfileEndEvent(@"Invoke callback", @"objc_call", @{
@"module": method.moduleClassName,
@"method": method.JSMethodName,
@"selector": NSStringFromSelector(method.selector),
@"args": RCTJSONStringify(RCTNullIfNil(params), NULL),
});
return YES;
}
- (void)_jsThreadUpdate:(CADisplayLink *)displayLink
{
RCTAssertJSThread();
RCTProfileBeginEvent();
RCTFrameUpdate *frameUpdate = [[RCTFrameUpdate alloc] initWithDisplayLink:displayLink];
for (id<RCTFrameUpdateObserver> observer in _frameUpdateObservers) {
if (![observer respondsToSelector:@selector(isPaused)] || ![observer isPaused]) {
RCT_IF_DEV(NSString *name = [NSString stringWithFormat:@"[%@ didUpdateFrame:%f]", observer, displayLink.timestamp];)
RCTProfileBeginFlowEvent();
[self dispatchBlock:^{
RCTProfileEndFlowEvent();
RCTProfileBeginEvent();
[observer didUpdateFrame:frameUpdate];
RCTProfileEndEvent(name, @"objc_call,fps", nil);
} forModule:(id<RCTBridgeModule>)observer];
}
}
NSArray *calls = [_scheduledCallbacks.allObjects arrayByAddingObjectsFromArray:_scheduledCalls];
NSNumber *currentExecutorID = RCTGetExecutorID(_javaScriptExecutor);
calls = [calls filteredArrayUsingPredicate:
[NSPredicate predicateWithBlock:
^BOOL(NSDictionary *call, __unused NSDictionary *bindings) {
return [call[@"context"] isEqualToNumber:currentExecutorID];
}]];
RCT_IF_DEV(
RCTProfileImmediateEvent(@"JS Thread Tick", displayLink.timestamp, @"g");
for (NSDictionary *call in calls) {
_RCTProfileEndFlowEvent(call[@"call_id"]);
}
)
if (calls.count > 0) {
_scheduledCalls = [[NSMutableArray alloc] init];
_scheduledCallbacks = [[RCTSparseArray alloc] init];
[self _actuallyInvokeAndProcessModule:@"BatchedBridge"
method:@"processBatch"
arguments:@[[calls valueForKey:@"js_args"]]
context:RCTGetExecutorID(_javaScriptExecutor)];
}
RCTProfileEndEvent(@"DispatchFrameUpdate", @"objc_call", nil);
dispatch_async(dispatch_get_main_queue(), ^{
[self.perfStats.jsGraph tick:displayLink.timestamp];
});
}
- (void)_mainThreadUpdate:(CADisplayLink *)displayLink
{
RCTAssertMainThread();
RCTProfileImmediateEvent(@"VSYNC", displayLink.timestamp, @"g");
[self.perfStats.uiGraph tick:displayLink.timestamp];
}
- (void)startProfiling
{
RCTAssertMainThread();
if (![_parentBridge.bundleURL.scheme isEqualToString:@"http"]) {
RCTLogError(@"To run the profiler you must be running from the dev server");
return;
}
[_javaScriptExecutor executeBlockOnJavaScriptQueue:^{
RCTProfileInit(self);
}];
}
- (void)stopProfiling
{
RCTAssertMainThread();
[_javaScriptExecutor executeBlockOnJavaScriptQueue:^{
NSString *log = RCTProfileEnd(self);
NSURL *bundleURL = _parentBridge.bundleURL;
NSString *URLString = [NSString stringWithFormat:@"%@://%@:%@/profile", bundleURL.scheme, bundleURL.host, bundleURL.port];
NSURL *URL = [NSURL URLWithString:URLString];
NSMutableURLRequest *URLRequest = [NSMutableURLRequest requestWithURL:URL];
URLRequest.HTTPMethod = @"POST";
[URLRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
NSURLSessionTask *task =
[[NSURLSession sharedSession] uploadTaskWithRequest:URLRequest
fromData:[log dataUsingEncoding:NSUTF8StringEncoding]
completionHandler:
^(__unused NSData *data, __unused NSURLResponse *response, NSError *error) {
if (error) {
RCTLogError(@"%@", error.localizedDescription);
} else {
[[[UIAlertView alloc] initWithTitle:@"Profile"
message:@"The profile has been generated, check the dev server log for instructions."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil] show];
}
}];
[task resume];
}];
}
@end