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// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "FirebasePerformance/Sources/Instrumentation/FPRInstrument.h"
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#import "FirebasePerformance/Sources/Instrumentation/FPRInstrument_Private.h"
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#import "FirebasePerformance/Sources/Common/FPRDiagnostics.h"
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#import "FirebasePerformance/Sources/Instrumentation/FPRClassInstrumentor.h"
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#import "FirebasePerformance/Sources/Instrumentation/FPRObjectInstrumentor.h"
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@implementation FPRInstrument {
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NSMutableArray<FPRClassInstrumentor *> *_classInstrumentors;
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NSMutableSet<Class> *_instrumentedClasses;
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}
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- (instancetype)init {
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self = [super init];
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if (self) {
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_classInstrumentors = [[NSMutableArray<FPRClassInstrumentor *> alloc] init];
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_instrumentedClasses = [[NSMutableSet<Class> alloc] init];
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}
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return self;
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}
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- (NSMutableArray<FPRClassInstrumentor *> *)classInstrumentors {
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return _classInstrumentors;
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}
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- (NSMutableSet<Class> *)instrumentedClasses {
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return _instrumentedClasses;
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}
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- (void)registerInstrumentors {
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FPRAssert(NO, @"registerInstrumentors should be implemented in a concrete subclass.");
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}
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- (BOOL)isObjectInstrumentable:(id)object {
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if ([object isKindOfClass:[NSOperation class]]) {
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return NO;
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}
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return YES;
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}
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- (BOOL)registerClassInstrumentor:(FPRClassInstrumentor *)instrumentor {
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@synchronized(self) {
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if ([_instrumentedClasses containsObject:instrumentor.instrumentedClass] ||
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[instrumentor.instrumentedClass instancesRespondToSelector:@selector(gul_class)]) {
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return NO;
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}
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[_instrumentedClasses addObject:instrumentor.instrumentedClass];
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[_classInstrumentors addObject:instrumentor];
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return YES;
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}
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}
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- (void)deregisterInstrumentors {
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@synchronized(self) {
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for (FPRClassInstrumentor *classInstrumentor in self.classInstrumentors) {
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[classInstrumentor unswizzle];
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}
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[_classInstrumentors removeAllObjects];
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[_instrumentedClasses removeAllObjects];
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}
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}
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@end
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