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Add experimental Windows support for the Mesh memory allocator: Platform abstraction: - Add Windows implementations for virtual memory operations (VirtualAlloc2, MapViewOfFile3) - Add vectored exception handler for meshing fault handling - Add Windows memory stats via GetProcessMemoryInfo - Abstract file handle type for cross-platform memfd/pagefile support Compiler compatibility (MSVC): - Replace GCC builtins with MSVC intrinsics (__popcnt64, _BitScanForward64, etc.) - Add Windows type definitions (ssize_t, pid_t) - Handle attribute syntax differences between compilers - Add pthread compatibility layer using Windows TLS API Build system: - Add Windows targets to Bazel BUILD file (mesh.dll, mesh_static_windows) - Add Windows configuration to CMakeLists.txt - Link against kernel32, psapi, advapi32 Debug infrastructure: - Add malloc-free debug printf using vendored printf library - Guard all debug instrumentation with MESH_DEBUG_VERBOSE Meshing on Windows requires Windows 10 version 1803+ for page-granular file mapping. Older versions fall back to allocation-only mode. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
This PR adds Windows platform support to the Mesh allocator. The port includes:
src/platform/) for cross-platform memory operationsNew Files
src/platform/vmem_windows.cc- Modern Windows memory APIs with fallback for older Windowssrc/platform/exception_handler_windows.cc- VEH for meshing page faultssrc/runtime_windows.cc- Windows-specific runtime initializationsrc/memory_stats_windows.cc- RSS measurement via PSAPIsrc/testing/fragmenter_windows.cc- Windows fragmentation testsrc/debug_printf.h,printf.c,putchar.c- Malloc-free debug outputBuild Instructions
Requirements
Test plan
🤖 Generated with Claude Code