feat(launch profiling): use dedicated traces instead of auto perf traces

Samples/iOS-Swift/iOS-Swift.xcodeproj/project.pbxproj

@@ -38,6 +38,7 @@
 		84B527BD28DD25E400475E8D /* SentryDevice.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84B527BC28DD25E400475E8D /* SentryDevice.mm */; };
 		84BE546F287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 84BE546E287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m */; };
 		84BE547E287645B900ACC735 /* SentryProcessInfo.m in Sources */ = {isa = PBXBuildFile; fileRef = 84BE54792876451D00ACC735 /* SentryProcessInfo.m */; };
+		84DEE88E2B6A4D1200A7BC17 /* AppStartup.m in Sources */ = {isa = PBXBuildFile; fileRef = 84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */; };
 		84FB812A284001B800F3A94A /* SentryBenchmarking.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84FB8129284001B800F3A94A /* SentryBenchmarking.mm */; };
 		84FB812B284001B800F3A94A /* SentryBenchmarking.mm in Sources */ = {isa = PBXBuildFile; fileRef = 84FB8129284001B800F3A94A /* SentryBenchmarking.mm */; };
 		8E8C57AF25EF16E6001CEEFA /* TraceTestViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8E8C57AE25EF16E6001CEEFA /* TraceTestViewController.swift */; };
@@ -314,6 +315,8 @@
 		84BE546E287503F100ACC735 /* SentrySDKPerformanceBenchmarkTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SentrySDKPerformanceBenchmarkTests.m; sourceTree = "<group>"; };
 		84BE54782876451D00ACC735 /* SentryProcessInfo.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SentryProcessInfo.h; sourceTree = "<group>"; };
 		84BE54792876451D00ACC735 /* SentryProcessInfo.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SentryProcessInfo.m; sourceTree = "<group>"; };
+		84DEE88C2B6A4D1200A7BC17 /* AppStartup.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppStartup.h; sourceTree = "<group>"; };
+		84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppStartup.m; sourceTree = "<group>"; };
 		84FB8125284001B800F3A94A /* SentryBenchmarking.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SentryBenchmarking.h; sourceTree = "<group>"; };
 		84FB8129284001B800F3A94A /* SentryBenchmarking.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = SentryBenchmarking.mm; sourceTree = "<group>"; };
 		84FB812C2840021B00F3A94A /* iOS-Swift-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "iOS-Swift-Bridging-Header.h"; sourceTree = "<group>"; };
@@ -475,6 +478,8 @@
 				D8DBDA73274D4DF900007380 /* ViewControllers */,
 				63F93AA9245AC91600A500DB /* iOS-Swift.entitlements */,
 				637AFDA9243B02760034958B /* AppDelegate.swift */,
+				84DEE88C2B6A4D1200A7BC17 /* AppStartup.h */,
+				84DEE88D2B6A4D1200A7BC17 /* AppStartup.m */,
 				637AFDAD243B02760034958B /* TransactionsViewController.swift */,
 				84AB90782A50031B0054C99A /* Profiling */,
 				D80D021229EE93630084393D /* ErrorsViewController.swift */,
@@ -953,6 +958,7 @@
 				7B79000429028C7300A7F467 /* MetricKitManager.swift in Sources */,
 				D8D7BB4A2750067900044146 /* UIAssert.swift in Sources */,
 				D8F3D057274E574200B56F8C /* LoremIpsumViewController.swift in Sources */,
+				84DEE88E2B6A4D1200A7BC17 /* AppStartup.m in Sources */,
 				629EC8AD2B0B537400858855 /* ANRs.swift in Sources */,
 				D8DBDA78274D5FC400007380 /* SplitViewController.swift in Sources */,
 				84ACC43C2A73CB5900932A18 /* ProfilingNetworkScanner.swift in Sources */,

Samples/iOS-Swift/iOS-Swift.xcodeproj/xcshareddata/xcschemes/iOS-Swift.xcscheme

@@ -23,7 +23,7 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
@@ -73,6 +73,18 @@
             argument = "--disable-file-io-tracing"
             isEnabled = "NO">
          </CommandLineArgument>
+         <CommandLineArgument
+            argument = "--disable-watchdog-tracking"
+            isEnabled = "NO">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "--disable-tracing"
+            isEnabled = "NO">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "--io.sentry.test.profilesAppLaunches"
+            isEnabled = "NO">
+         </CommandLineArgument>
          <CommandLineArgument
             argument = "--disable-crash-handler"
             isEnabled = "NO">

Samples/iOS-Swift/iOS-Swift.xcodeproj/xcshareddata/xcschemes/iOS-SwiftUITests.xcscheme

@@ -25,7 +25,7 @@
       </Testables>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"

Samples/iOS-Swift/iOS-Swift/AppDelegate.swift

@@ -34,7 +34,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             }
             options.tracesSampleRate = tracesSampleRate
 
-            if let tracesSamplerValue = env["--io.sentry.tracersSamplerValue"] {
+            if let tracesSamplerValue = env["--io.sentry.tracesSamplerValue"] {
                 options.tracesSampler = { _ in
                     return NSNumber(value: (tracesSamplerValue as NSString).integerValue)
                 }
@@ -51,7 +51,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
                     return NSNumber(value: (profilesSamplerValue as NSString).integerValue)
                 }
             }
-
+
+            options.enableAppLaunchProfiling = args.contains("--profile-app-launches")
+
             options.sessionTrackingIntervalMillis = 5_000
             options.attachScreenshot = true
             options.attachViewHierarchy = true
@@ -81,9 +83,11 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             options.enableNetworkBreadcrumbs = !args.contains("--disable-network-breadcrumbs")
             options.enableSwizzling = !args.contains("--disable-swizzling")
             options.enableCrashHandler = !args.contains("--disable-crash-handler")
+            options.enableTracing = !args.contains("--disable-tracing")
 
             // because we run CPU for 15 seconds at full throttle, we trigger ANR issues being sent. disable such during benchmarks.
             options.enableAppHangTracking = !isBenchmarking && !args.contains("--disable-anr-tracking")
+            options.enableWatchdogTerminationTracking = !isBenchmarking && !args.contains("--disable-watchdog-tracking")
             options.appHangTimeoutInterval = 2
             options.enableCaptureFailedRequests = true
             let httpStatusCodeRange = HttpStatusCodeRange(min: 400, max: 599)
@@ -96,7 +100,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             }
 
             options.initialScope = { scope in
-                let processInfoEnvironment = ProcessInfo.processInfo.environment["io.sentry.sdk-environment"]
+                let processInfoEnvironment = env["io.sentry.sdk-environment"]
 
                 if processInfoEnvironment != nil {
                     scope.setEnvironment(processInfoEnvironment)
@@ -129,7 +133,6 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         print("[iOS-Swift] launch arguments: \(ProcessInfo.processInfo.arguments)")
         print("[iOS-Swift] environment: \(ProcessInfo.processInfo.environment)")
 
-        maybeWipeData()
         AppDelegate.startSentry()
 
         if #available(iOS 15.0, *) {
@@ -159,18 +162,3 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // swiftlint:enable force_cast
     }
 }
-
-private extension AppDelegate {
-    func maybeWipeData() {
-        if ProcessInfo.processInfo.arguments.contains("--io.sentry.wipe-data") {
-            print("[iOS-Swift] removing app data")
-            let appSupport = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true).first!
-            let cache = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first!
-            for path in [appSupport, cache] {
-                for item in FileManager.default.enumerator(atPath: path)! {
-                    try! FileManager.default.removeItem(atPath: (path as NSString).appendingPathComponent((item as! String)))
-                }
-            }
-        }
-    }
-}

Samples/iOS-Swift/iOS-Swift/AppStartup.h

@@ -0,0 +1,17 @@
+//
+//  AppStartup.h
+//  iOS-Swift
+//
+//  Created by Andrew McKnight on 1/31/24.
+//  Copyright © 2024 Sentry. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AppStartup : NSObject
+
+@end
+
+NS_ASSUME_NONNULL_END

Samples/iOS-Swift/iOS-Swift/AppStartup.m

@@ -0,0 +1,26 @@
+#import "AppStartup.h"
+
+@implementation AppStartup
+
+// we must do this in objective c, because it's not permitted to be overridden in Swift
++ (void)load
+{
+    if ([NSProcessInfo.processInfo.arguments containsObject:@"--io.sentry.wipe-data"]) {
+        NSLog(@"[iOS-Swift] removing app data");
+        NSString *appSupport = [NSSearchPathForDirectoriesInDomains(
+            NSApplicationSupportDirectory, NSUserDomainMask, true) firstObject];
+        NSString *cache = [NSSearchPathForDirectoriesInDomains(
+            NSCachesDirectory, NSUserDomainMask, true) firstObject];
+        NSFileManager *fm = NSFileManager.defaultManager;
+        for (NSString *dir in @[ appSupport, cache ]) {
+            for (NSString *file in [fm enumeratorAtPath:dir]) {
+                NSError *error;
+                if (![fm removeItemAtPath:[dir stringByAppendingPathComponent:file] error:&error]) {
+                    NSLog(@"[iOS-Swift] failed to remove data at app startup.");
+                }
+            }
+        }
+    }
+}
+
+@end