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[ReactNative] Fix racing conditions on reload 

Summary:
@public

That was eventually being released before all the queues had been cleared.
Update it so the each modules' queue is immediately invalidated after sending
the `-invalidate` message to it, and introduce an intentional retain cycle so
the bridge is only released together with all modules, when all the messages
have been dispatched.

Test Plan: Launch the UIExplorer, and reload it, like, a lot.
This commit is contained in:
Tadeu Zagallo 2015-06-22 04:55:55 -07:00
parent 2cb0546d15
commit 9228873fb4
1 changed files with 36 additions and 17 deletions
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47
React/Base/RCTBridge.m
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@ -1042,11 +1042,7 @@ RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
- (NSDictionary *)modules
{
if (!self.isValid) {
return nil;
}
RCTAssert(_modulesByName != nil, @"Bridge modules have not yet been initialized. "
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;
@ -1074,19 +1070,21 @@ RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
_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];
} forModule:target dispatchGroup:group];
}
_queuesByID[RCTModuleIDsByName[RCTBridgeModuleNameForClass([target class])]] = nil;
}
// Release modules (breaks retain cycle if module has strong bridge reference)
_frameUpdateObservers = nil;
_modulesByID = nil;
dispatch_group_notify(group, dispatch_get_main_queue(), ^{
_queuesByID = nil;
_modulesByID = nil;
_modulesByName = nil;
_frameUpdateObservers = nil;
});
};
if (!_javaScriptExecutor) {
@ -1185,13 +1183,30 @@ RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
}
#pragma mark - Payload Generation
- (void)dispatchBlock:(dispatch_block_t)block forModule:(id<RCTBridgeModule>)module
- (void)dispatchBlock:(dispatch_block_t)block
forModule:(id<RCTBridgeModule>)module
{
[self dispatchBlock:block forModuleID:RCTModuleIDsByName[RCTBridgeModuleNameForClass([module class])]];
[self dispatchBlock:block forModule:module dispatchGroup:NULL];
}
- (void)dispatchBlock:(dispatch_block_t)block forModuleID:(NSNumber *)moduleID
- (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();
@ -1203,8 +1218,12 @@ RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
if (queue == RCTJSThread) {
[_javaScriptExecutor executeBlockOnJavaScriptQueue:block];
} else if (queue) {
if (group != NULL) {
dispatch_group_async(group, queue, block);
} else {
dispatch_async(queue, block);
}
}
}
/**