72 строки
3.1 KiB
C#
72 строки
3.1 KiB
C#
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT License - see LICENSE file in this repo.
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namespace Microsoft.SqlServer.Utils.Misc.SQLCallStackResolver {
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Diagnostics.Contracts;
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using System.Globalization;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Text;
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public static class SymSrvHelpers {
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static readonly int processId = Process.GetCurrentProcess().Id;
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/// Wrapper around the symsrv.dll functionality to initialize the symbol load handler for this process.
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private static bool InitSymSrv(string symPath) {
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return SafeNativeMethods.SymInitialize((IntPtr)processId, symPath, false);
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}
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/// Un-initialize the symbol load handler for this process.
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private static bool CleanupSymSrv() {
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return SafeNativeMethods.SymCleanup((IntPtr)processId);
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}
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/// Private method to locate the local path for a matching PDB. Implicitly handles symbol download if needed.
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private static string GetLocalSymbolFolderForModule(string pdbFilename, string pdbGuid, int pdbAge) {
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const int MAX_PATH = 4096;
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StringBuilder outPath = new StringBuilder(MAX_PATH);
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var guid = Guid.Parse(pdbGuid);
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int rawsize = Marshal.SizeOf(guid);
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IntPtr buffer = Marshal.AllocHGlobal(rawsize);
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Marshal.StructureToPtr(guid, buffer, false);
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bool success = SafeNativeMethods.SymFindFileInPath((IntPtr)processId, null, pdbFilename, buffer, pdbAge, 0, 8, outPath, IntPtr.Zero, IntPtr.Zero);
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if (!success) {
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return String.Empty;
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}
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return outPath.ToString();
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}
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/// <summary>
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/// Public method to return local PDB file paths for specified symbols.
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/// </summary>
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public static List<string> GetFolderPathsForPDBs(StackResolver parent, string symPath, List<Symbol> syms) {
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var retval = new List<string>();
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Contract.Requires(null != syms);
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Contract.Requires(null != parent);
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if (!InitSymSrv(symPath)) {
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return retval;
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}
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int progress = 0;
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foreach (var sym in syms) {
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parent.StatusMessage = string.Format(CultureInfo.CurrentCulture, $"Finding local PDB path for {sym.PDBName}");
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var path = GetLocalSymbolFolderForModule(sym.PDBName, sym.PDBGuid, sym.PDBAge);
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if (!string.IsNullOrEmpty(path)) {
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retval.Add(Path.GetDirectoryName(path));
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parent.StatusMessage = string.Format(CultureInfo.CurrentCulture, $"Successfully found local PDB at {path}");
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}
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else {
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parent.StatusMessage = string.Format(CultureInfo.CurrentCulture, $"Could not find local PDB for {sym.PDBName}");
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}
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progress++;
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parent.PercentComplete = (int)((double)progress / syms.Count * 100.0);
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}
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CleanupSymSrv();
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return retval;
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}
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}
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}
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