improvements

Signed-off-by: Marino Faggiana <8616947+marinofaggiana@users.noreply.github.com>

iOSClient/Media/NCMediaManager.swift

@@ -8,6 +8,7 @@
 
 import UIKit
 import LRUCache
+import NextcloudKit
 
 class NCMediaManager {
 
@@ -36,7 +37,8 @@ class NCMediaManager {
         var files: [FileInfo] = []
 
         let startDate = Date()
-        print("--------- start ThumbnailLRUCache image process ---------")
+        let startMemory = NCUtility.shared.getMemoryUsedAndDeviceTotalInMegabytes()
+        NextcloudKit.shared.nkCommonInstance.writeLog("--------- start ThumbnailLRUCache image process ---------")
 
         // Get files only image / video
         if let enumerator = manager.enumerator(at: URL(fileURLWithPath: directory), includingPropertiesForKeys: [.isRegularFileKey], options: [.skipsHiddenFiles]) {
@@ -56,8 +58,8 @@ class NCMediaManager {
         // Sort for most recent
         files.sort(by: { $0.date > $1.date })
         if let firstDate = files.first?.date, let lastDate = files.last?.date {
-            print("First date: \(firstDate)")
-            print("Last date: \(lastDate)")
+            NextcloudKit.shared.nkCommonInstance.writeLog("First date: \(firstDate)")
+            NextcloudKit.shared.nkCommonInstance.writeLog("Last date: \(lastDate)")
         }
 
         // Insert in cache
@@ -72,9 +74,12 @@ class NCMediaManager {
 
         let endDate = Date()
         let diffDate = endDate.timeIntervalSinceReferenceDate - startDate.timeIntervalSinceReferenceDate
-        print("Counter process: \(cache.count)")
-        print("Time process: \(diffDate)")
-        print("--------- stop ThumbnailLRUCache image process ---------")
+        let endMemory = NCUtility.shared.getMemoryUsedAndDeviceTotalInMegabytes()
+        let usedMemory = endMemory.0 - startMemory.0
+        NextcloudKit.shared.nkCommonInstance.writeLog("Counter process: \(cache.count)")
+        NextcloudKit.shared.nkCommonInstance.writeLog("Time process: \(diffDate)")
+        NextcloudKit.shared.nkCommonInstance.writeLog("Memory used for cache in MB: \(usedMemory)")
+        NextcloudKit.shared.nkCommonInstance.writeLog("--------- stop ThumbnailLRUCache image process ---------")
     }
 
     func getImage(ocId: String) -> UIImage? {

iOSClient/Utility/NCUtility.swift

@@ -809,4 +809,36 @@ class NCUtility: NSObject {
             }
         }
     }
+
+    // https://stackoverflow.com/questions/5887248/ios-app-maximum-memory-budget/19692719#19692719
+    // https://stackoverflow.com/questions/27556807/swift-pointer-problems-with-mach-task-basic-info/27559770#27559770
+
+    func getMemoryUsedAndDeviceTotalInMegabytes() -> (Float, Float) {
+
+        var usedmegabytes: Float = 0
+
+        let totalbytes = Float(ProcessInfo.processInfo.physicalMemory)
+        let totalmegabytes = totalbytes / 1024.0 / 1024.0
+
+        var info = mach_task_basic_info()
+        var count = mach_msg_type_number_t(MemoryLayout<mach_task_basic_info>.size) / 4
+
+        let kerr: kern_return_t = withUnsafeMutablePointer(to: &info) {
+            $0.withMemoryRebound(to: integer_t.self, capacity: 1) {
+                task_info(
+                    mach_task_self_,
+                    task_flavor_t(MACH_TASK_BASIC_INFO),
+                    $0,
+                    &count
+                )
+            }
+        }
+
+        if kerr == KERN_SUCCESS {
+            let usedbytes: Float = Float(info.resident_size)
+            usedmegabytes = usedbytes / 1024.0 / 1024.0
+        }
+
+        return (usedmegabytes, totalmegabytes)
+    }
 }