feat(telemetry): implement Intel and AMD GPU telemetry provider (fixes #14)

MacMonitor.xcodeproj/project.pbxproj

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@@ -157,6 +197,17 @@
 			path = CPU;
 			sourceTree = "<group>";
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@@ -171,14 +222,30 @@
 			children = (
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@@ -187,6 +254,15 @@
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 			sourceTree = "<group>";
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@@ -199,6 +275,8 @@
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@@ -221,15 +299,32 @@
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+			children = (
+				E6D9BB71DFE7384D0F0E6AA3 /* MMKernelTelemetryProvider.h */,
+				F444F4543F0A7421C8F8E636 /* MMKernelTelemetryProvider.m */,
+			);
+			path = Kernel;
+			sourceTree = "<group>";
+		};
 		DBDC37231C01F0A2D4A7FC73 /* Thermal */ = {
 			isa = PBXGroup;
 			children = (
@@ -271,6 +366,15 @@
 			path = Memory;
 			sourceTree = "<group>";
 		};
+		F99AF003017BA9F19F7AEB1E /* GPU */ = {
+			isa = PBXGroup;
+			children = (
+				9DC54CCE276F93D5AF0A0C28 /* MMGPUTelemetryProvider.h */,
+				D61AB99733A4AA52459BA7C4 /* MMGPUTelemetryProvider.m */,
+			);
+			path = GPU;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -349,9 +453,17 @@
 				160334CC765E091A7CBE21AA /* MMCPULoadTests.swift in Sources */,
 				87818E46CEA5145A8215D0E3 /* MMCPUThermalTests.swift in Sources */,
 				57BA02AE1CE24DBD02BD03A4 /* MMComponentThermalTests.swift in Sources */,
+				6A4FDB46AE5E0DAF85CCAB56 /* MMDiskIOTests.swift in Sources */,
 				E6F2F695B8D3E7045967C082 /* MMFanTests.swift in Sources */,
+				AE3C28BDC3CEF40A9E8F2B20 /* MMGPUTests.swift in Sources */,
+				901EF4853E785A2856E54BC9 /* MMKernelTelemetryTests.swift in Sources */,
+				ACC914C61AB3762EB0C40513 /* MMLoadAverageTests.swift in Sources */,
 				6201FD599FED061F6C736E8B /* MMMemoryTests.swift in Sources */,
+				5D31906EA986E2BA92E86FA8 /* MMNetworkBandwidthTests.swift in Sources */,
+				4C1A92F4DEF4C824976115C2 /* MMNetworkSocketsTests.swift in Sources */,
 				9B5C651AD2AF7DE2738F0C44 /* MMPowerTests.swift in Sources */,
+				3BA6709B727B1AAC6C4310B5 /* MMProcessDetailsTests.swift in Sources */,
+				7C9AE2ADAED52E593B52F3AE /* MMProcessTests.swift in Sources */,
 				EC9FA3E4A119277B89E73F8D /* MMSMCTests.swift in Sources */,
 				1B15F48F6B19E9EA4556ECD5 /* MMStorageTests.swift in Sources */,
 				9BCE74C5454F81EF80492E75 /* MacMonitorTests.swift in Sources */,
@@ -367,9 +479,17 @@
 				4419FE7554489B23976E2970 /* MMCPULoadProvider.m in Sources */,
 				87A9E18362486D0D385BBC4A /* MMCPUThermalProvider.m in Sources */,
 				925245C5B5F8D8DA3C89C4BA /* MMComponentThermalProvider.m in Sources */,
+				FED88F290A2F2FBD63DDEC31 /* MMDiskIOProvider.m in Sources */,
 				655366D7066478A02EDA91BB /* MMFanTelemetryProvider.m in Sources */,
+				6D973241BBE61F0B053239DB /* MMGPUTelemetryProvider.m in Sources */,
+				A521961E035DD50ED8B0C1A9 /* MMKernelTelemetryProvider.m in Sources */,
+				951DBA5D3BBAB753322A5DF9 /* MMLoadAverageProvider.m in Sources */,
 				B9C2D6574E808B517BA34C83 /* MMMemoryTelemetryProvider.m in Sources */,
+				E3CCE93A7D4D1EB0187D3E52 /* MMNetworkBandwidthProvider.m in Sources */,
+				A599E974E56F0B8D94A7E480 /* MMNetworkSocketsProvider.m in Sources */,
 				0A7117B3B7CC7112F2527574 /* MMPowerTelemetryProvider.m in Sources */,
+				2C0F7AB93691ED8AA86FBCF0 /* MMProcessDetailInspector.m in Sources */,
+				93EF83FE087C6DEAAE3EC0CC /* MMProcessTelemetryProvider.m in Sources */,
 				1B3F1C8ABF0ADFAA290FF6F6 /* MMSMCParser.m in Sources */,
 				F2F7A141F2452EC1B4FB45D8 /* MMStorageTelemetryProvider.m in Sources */,
 				EAFAF5A10502D4ACC64F4720 /* MMTelemetryCoordinator.m in Sources */,

Sources/Bridging/MacMonitor-Bridging-Header.h

@@ -26,5 +26,6 @@
 #import "MMNetworkSocketsProvider.h"
 #import "MMProcessTelemetryProvider.h"
 #import "MMProcessDetailInspector.h"
+#import "MMGPUTelemetryProvider.h"
 
 #endif /* MacMonitor_Bridging_Header_h */

Sources/Telemetry/GPU/MMGPUTelemetryProvider.h

@@ -0,0 +1,31 @@
+#ifndef MMGPUTelemetryProvider_h
+#define MMGPUTelemetryProvider_h
+
+#import <Foundation/Foundation.h>
+#import "MMTelemetryProvider.h"
+#import "MMAppleSMCClient.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * MMGPUTelemetryProvider
+ * Samples Intel Integrated Graphics (Iris/UHD) and AMD Discrete Graphics (Radeon/Vega)
+ * utilization, VRAM allocation, and thermal metrics via IOKit and Metal.
+ */
+@interface MMGPUTelemetryProvider : NSObject <MMTelemetryProvider>
+
+@property (nonatomic, strong, readonly) MMAppleSMCClient *smcClient;
+
+- (instancetype)init;
+- (instancetype)initWithSMCClient:(MMAppleSMCClient *)client;
+
+/**
+ * Pure calculator method for deterministic unit testing.
+ */
++ (NSDictionary<NSString *, id> *)calculateGPUMetricsWithDevices:(NSArray<NSDictionary<NSString *, id> *> *)gpuDevices;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* MMGPUTelemetryProvider_h */

Sources/Telemetry/GPU/MMGPUTelemetryProvider.m

@@ -0,0 +1,184 @@
+#import "MMGPUTelemetryProvider.h"
+#import <IOKit/IOKitLib.h>
+#import <Metal/Metal.h>
+
+@interface MMGPUTelemetryProvider () {
+    MMAppleSMCClient *_smcClient;
+}
+@end
+
+@implementation MMGPUTelemetryProvider
+
+- (instancetype)init {
+    return [self initWithSMCClient:[MMAppleSMCClient sharedClient]];
+}
+
+- (instancetype)initWithSMCClient:(MMAppleSMCClient *)client {
+    self = [super init];
+    if (self) {
+        _smcClient = client;
+    }
+    return self;
+}
+
+- (MMTelemetryDomain)domain {
+    return MMTelemetryDomainGPU;
+}
+
+- (NSString *)providerIdentifier {
+    return @"com.i3omb.macmonitor.telemetry.gpu";
+}
+
+- (BOOL)isAvailable {
+    return YES;
+}
+
+- (MMAppleSMCClient *)smcClient {
+    return _smcClient;
+}
+
++ (NSDictionary<NSString *, id> *)calculateGPUMetricsWithDevices:(NSArray<NSDictionary<NSString *, id> *> *)gpuDevices {
+    double totalUtil = 0.0;
+    double peakUtil = 0.0;
+    NSString *activeGPU = @"None";
+    
+    for (NSDictionary<NSString *, id> *gpu in gpuDevices) {
+        double util = [gpu[@"utilization"] doubleValue];
+        totalUtil += util;
+        if (util > peakUtil) {
+            peakUtil = util;
+            activeGPU = gpu[@"name"] ?: @"GPU";
+        }
+    }
+    
+    double avgUtil = gpuDevices.count > 0 ? (totalUtil / (double)gpuDevices.count) : 0.0;
+    if ([activeGPU isEqualToString:@"None"] && gpuDevices.count > 0) {
+        activeGPU = gpuDevices[0][@"name"] ?: @"GPU";
+    }
+    
+    return @{
+        @"gpuCount": @(gpuDevices.count),
+        @"averageUtilization": @(avgUtil),
+        @"peakUtilization": @(peakUtil),
+        @"activeGPUName": activeGPU,
+        @"devices": gpuDevices
+    };
+}
+
+- (nullable NSDictionary<NSString *, id> *)sampleTelemetryWithError:(NSError **)error {
+    // 1. Query IOKit IOAccelerator performance statistics
+    NSMutableDictionary<NSString *, NSDictionary *> *accelStatsByName = [NSMutableDictionary dictionary];
+    
+    CFMutableDictionaryRef matching = IOServiceMatching("IOAccelerator");
+    io_iterator_t iterator = IO_OBJECT_NULL;
+    if (IOServiceGetMatchingServices(kIOMainPortDefault, matching, &iterator) == KERN_SUCCESS && iterator != IO_OBJECT_NULL) {
+        io_registry_entry_t entry;
+        while ((entry = IOIteratorNext(iterator)) != IO_OBJECT_NULL) {
+            CFMutableDictionaryRef props = NULL;
+            if (IORegistryEntryCreateCFProperties(entry, &props, kCFAllocatorDefault, 0) == KERN_SUCCESS && props) {
+                NSDictionary *dict = (__bridge NSDictionary *)props;
+                NSDictionary *stats = dict[@"PerformanceStatistics"];
+                io_name_t entryName;
+                if (IORegistryEntryGetName(entry, entryName) == KERN_SUCCESS && stats) {
+                    accelStatsByName[[NSString stringWithUTF8String:entryName]] = stats;
+                }
+                CFRelease(props);
+            }
+            IOObjectRelease(entry);
+        }
+        IOObjectRelease(iterator);
+    }
+    
+    // 2. Query SMC for GPU temperature fallback
+    NSNumber *smcGpuTemp = nil;
+    if (_smcClient.isAvailable) {
+        smcGpuTemp = [_smcClient readNumericValueForKey:@"TG0D" error:nil];
+        if (!smcGpuTemp) {
+            smcGpuTemp = [_smcClient readNumericValueForKey:@"TG0P" error:nil];
+        }
+    }
+    
+    // 3. Enumerate Metal devices
+    NSArray<id<MTLDevice>> *metalDevices = MTLCopyAllDevices();
+    NSMutableArray<NSDictionary<NSString *, id> *> *deviceList = [NSMutableArray array];
+    
+    for (id<MTLDevice> dev in metalDevices) {
+        NSString *name = dev.name;
+        BOOL isLowPower = dev.isLowPower;
+        BOOL isRemovable = dev.isRemovable;
+        uint64_t maxMem = dev.recommendedMaxWorkingSetSize;
+        
+        // Find matching stats
+        double util = 0.0;
+        uint64_t vramUsed = 0;
+        uint64_t vramTotal = maxMem;
+        double temp = smcGpuTemp ? [smcGpuTemp doubleValue] : 0.0;
+        
+        for (NSString *accelName in accelStatsByName) {
+            NSDictionary *stats = accelStatsByName[accelName];
+            
+            // Check Intel stats
+            if ([name containsString:@"Intel"] || [accelName containsString:@"Intel"]) {
+                if (stats[@"Device Utilization %"]) {
+                    util = [stats[@"Device Utilization %"] doubleValue];
+                }
+                if (stats[@"gartUsedBytes"]) {
+                    vramUsed = [stats[@"gartUsedBytes"] unsignedLongLongValue];
+                }
+                if (stats[@"gartSizeBytes"]) {
+                    vramTotal = [stats[@"gartSizeBytes"] unsignedLongLongValue];
+                }
+            } else {
+                // AMD / Discrete stats
+                if (stats[@"GPU Activity(%)"]) {
+                    util = [stats[@"GPU Activity(%)"] doubleValue];
+                } else if (stats[@"Device Utilization %"]) {
+                    util = [stats[@"Device Utilization %"] doubleValue];
+                }
+                if (stats[@"vramUsedBytes"]) {
+                    vramUsed = [stats[@"vramUsedBytes"] unsignedLongLongValue];
+                }
+                if (stats[@"vramFreeBytes"]) {
+                    uint64_t freeBytes = [stats[@"vramFreeBytes"] unsignedLongLongValue];
+                    vramTotal = vramUsed + freeBytes;
+                }
+                if (stats[@"Temperature(C)"]) {
+                    temp = [stats[@"Temperature(C)"] doubleValue];
+                }
+            }
+        }
+        
+        NSString *gpuType = isLowPower || [name containsString:@"Intel"] ? @"Integrated" : @"Discrete";
+        
+        [deviceList addObject:@{
+            @"name": name,
+            @"type": gpuType,
+            @"utilization": @(util),
+            @"vramUsedBytes": @(vramUsed),
+            @"vramTotalBytes": @(vramTotal),
+            @"temperature": @(temp),
+            @"isLowPower": @(isLowPower),
+            @"isRemovable": @(isRemovable),
+            @"recommendedMaxWorkingSetBytes": @(maxMem)
+        }];
+    }
+    
+    // Fallback if no Metal devices enumerated (headless / virtualization)
+    if (deviceList.count == 0) {
+        [deviceList addObject:@{
+            @"name": @"Default GPU",
+            @"type": @"Integrated",
+            @"utilization": @(0.0),
+            @"vramUsedBytes": @(0),
+            @"vramTotalBytes": @(1024 * 1024 * 1024),
+            @"temperature": @(0.0),
+            @"isLowPower": @(YES),
+            @"isRemovable": @(NO),
+            @"recommendedMaxWorkingSetBytes": @(1024 * 1024 * 1024)
+        }];
+    }
+    
+    return [MMGPUTelemetryProvider calculateGPUMetricsWithDevices:deviceList];
+}
+
+@end

Tests/MMGPUTests.swift

@@ -0,0 +1,54 @@
+import XCTest
+@testable import MacMonitor
+
+final class MMGPUTests: XCTestCase {
+    
+    func testGPUMetricsCalculation() {
+        let mockGPUs: [[String: Any]] = [
+            [
+                "name": "Intel Iris Plus Graphics 655",
+                "type": "Integrated",
+                "utilization": 15.0,
+                "vramUsedBytes": 500_000_000,
+                "vramTotalBytes": 1_500_000_000,
+                "temperature": 45.0,
+                "isLowPower": true,
+                "isRemovable": false
+            ],
+            [
+                "name": "AMD Radeon Pro 560X",
+                "type": "Discrete",
+                "utilization": 75.0,
+                "vramUsedBytes": 3_000_000_000,
+                "vramTotalBytes": 4_000_000_000,
+                "temperature": 68.0,
+                "isLowPower": false,
+                "isRemovable": false
+            ]
+        ]
+        
+        let metrics = MMGPUTelemetryProvider.calculateGPUMetrics(withDevices: mockGPUs)
+        
+        let count = metrics["gpuCount"] as? Int ?? 0
+        let avg = metrics["averageUtilization"] as? Double ?? 0
+        let peak = metrics["peakUtilization"] as? Double ?? 0
+        let active = metrics["activeGPUName"] as? String ?? ""
+        
+        XCTAssertEqual(count, 2)
+        XCTAssertEqual(avg, 45.0, accuracy: 0.1)
+        XCTAssertEqual(peak, 75.0, accuracy: 0.1)
+        XCTAssertEqual(active, "AMD Radeon Pro 560X")
+    }
+    
+    func testLiveGPUProvider() throws {
+        let provider = MMGPUTelemetryProvider()
+        XCTAssertEqual(provider.domain, .gpu)
+        XCTAssertEqual(provider.providerIdentifier, "com.i3omb.macmonitor.telemetry.gpu")
+        
+        let sample = try provider.sampleTelemetry()
+        XCTAssertNotNil(sample)
+        XCTAssertNotNil(sample["gpuCount"])
+        XCTAssertNotNil(sample["devices"])
+        XCTAssertNotNil(sample["activeGPUName"])
+    }
+}