Add Image Diagnostics Metrics Tracking to MAUI Applications #31497
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jsuarezruiz
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Description of Change
This PR implements a comprehensive image loading performance metrics infrastructure for .NET MAUI, following the established diagnostics pattern used by layout metrics. The implementation provides zero-allocation, struct-based instrumentation to monitor image loading performance across all platforms with success and failure monitoring.
Metrics
maui.image.load_duration(Histogram, ms): Total duration of image loading operationsmaui.image.file_size(Histogram, bytes): Original file size of loaded imagesmaui.image.width(Histogram, pixels): Width of loaded imagesmaui.image.height(Histogram, pixels): Height of loaded imagesmaui.image.load_success(Counter): Number of successful image load operationsmaui.image.load_failures(Counter): Number of failed image load operationsTags
Each metric supports contextual tags for richer analysis:
image.source: The source type (e.g., "File", "Uri", "Stream", "EmbeddedResource")image.format: File format such as "png", "jpeg", "gif", etc.control.type: The consuming control type ("Image", "ImageButton", etc.)error.type: (on failures) The classification of the error (e.g., "FileNotFound", "DecodeError")error.message: (on failures) Optional descriptive error messageIssues Fixed
Related with #29065