private void SetPdbEntry(HashSet <PdbEntry> missing, PdbEntry entry, string value)
{
if (value == null)
{
missing.Add(entry);
}
else
{
_pdbCache[entry] = value;
}
}
private string GetPdbEntry(PdbEntry entry)
{
lock (s_pdbs)
{
if (s_pdbs.TryGetValue(entry, out Task <string> task))
{
return(task.Result);
}
}
return(null);
}
private string GetPdbEntry(PdbEntry entry)
{
string result;
if (!_pdbCache.TryGetValue(entry, out result))
{
return(null);
}
Debug.Assert(result != null);
if (File.Exists(result))
{
return(result);
}
_pdbCache.Remove(entry);
return(null);
}
private void SetPdbEntry(HashSet <PdbEntry> missing, PdbEntry entry, string value)
{
if (value != null)
{
lock (s_pdbs)
{
if (!s_pdbs.ContainsKey(entry))
{
Task <string> task = new Task <string>(() => value);
s_pdbs[entry] = task;
task.Start();
}
}
}
else
{
lock (missing)
missing.Add(entry);
}
}
/// <summary>
/// Attempts to locate a pdb based on its name, guid, and revision number.
/// </summary>
/// <param name="pdbName">The name the pdb is indexed under.</param>
/// <param name="pdbIndexGuid">The guid the pdb is indexed under.</param>
/// <param name="pdbIndexAge">The age of the pdb.</param>
/// <returns>A full path on disk (local) of where the pdb was copied to.</returns>
public async override Task <string> FindPdbAsync(string pdbName, Guid pdbIndexGuid, int pdbIndexAge)
{
if (string.IsNullOrWhiteSpace(pdbName))
{
throw new ArgumentNullException(nameof(pdbName));
}
// Ensure we don't attempt to download the same pdb multiple times.
string pdbSimpleName = Path.GetFileName(pdbName);
PdbEntry pdbEntry = new PdbEntry(pdbSimpleName, pdbIndexGuid, pdbIndexAge);
var missingPdbs = _missingPdbs;
Task <string> task = null;
lock (s_pdbs)
{
if (IsMissing(missingPdbs, pdbEntry))
{
return(null);
}
if (!s_pdbs.TryGetValue(pdbEntry, out task))
{
task = s_pdbs[pdbEntry] = DownloadPdbWorker(pdbName, pdbSimpleName, pdbIndexGuid, pdbIndexAge);
}
}
// If we failed to find the file, we need to clear out the empty task, since the user could
// change symbol paths and we need s_files to only contain positive results.
string result = await task;
if (result == null)
{
ClearFailedTask(s_pdbs, task, missingPdbs, pdbEntry);
}
return(result);
}
/// <summary>
/// Default implementation of finding a pdb.
/// </summary>
/// <param name="pdbName">The name the pdb is indexed under.</param>
/// <param name="pdbIndexGuid">The guid the pdb is indexed under.</param>
/// <param name="pdbIndexAge">The age of the pdb.</param>
/// <returns>A full path on disk (local) of where the pdb was copied to.</returns>
public override string FindPdb(string pdbName, Guid pdbIndexGuid, int pdbIndexAge)
{
if (string.IsNullOrEmpty(pdbName))
{
return(null);
}
string pdbSimpleName = Path.GetFileName(pdbName);
if (pdbName != pdbSimpleName)
{
if (ValidatePdb(pdbName, pdbIndexGuid, pdbIndexAge))
{
return(pdbName);
}
}
// Check to see if it's already cached.
PdbEntry entry = new PdbEntry(pdbSimpleName, pdbIndexGuid, pdbIndexAge);
string result = GetPdbEntry(entry);
if (result != null)
{
return(result);
}
HashSet <PdbEntry> missingPdbs = _missingPdbs;
if (IsMissing(missingPdbs, entry))
{
return(null);
}
string pdbIndexPath = GetIndexPath(pdbSimpleName, pdbIndexGuid, pdbIndexAge);
foreach (SymPathElement element in SymPathElement.GetElements(SymbolPath))
{
if (element.IsSymServer)
{
string targetPath = TryGetFileFromServer(element.Target, pdbIndexPath, element.Cache ?? SymbolCache);
if (targetPath != null)
{
Trace("Found pdb {0} from server '{1}' on path '{2}'. Copied to '{3}'.", pdbSimpleName, element.Target, pdbIndexPath, targetPath);
SetPdbEntry(missingPdbs, entry, targetPath);
return(targetPath);
}
Trace("No matching pdb found on server '{0}' on path '{1}'.", element.Target, pdbIndexPath);
}
else
{
string fullPath = Path.Combine(element.Target, pdbSimpleName);
if (ValidatePdb(fullPath, pdbIndexGuid, pdbIndexAge))
{
Trace($"Found pdb '{pdbSimpleName}' at '{fullPath}'.");
SetPdbEntry(missingPdbs, entry, fullPath);
return(fullPath);
}
Trace($"Mismatched pdb found at '{fullPath}'.");
}
}
SetPdbEntry(missingPdbs, entry, null);
return(null);
}
public string FindPdb(string pdbName, Guid pdbIndexGuid, int pdbIndexAge)
{
if (string.IsNullOrEmpty(pdbName))
{
return(null);
}
string pdbSimpleName = Path.GetFileName(pdbName);
if (pdbName != pdbSimpleName)
{
if (PdbMatches(pdbName, pdbIndexGuid, pdbIndexAge))
{
return(pdbName);
}
}
PdbEntry entry = new PdbEntry(pdbSimpleName, pdbIndexGuid, pdbIndexAge);
string result = null;
if (_pdbCache.TryGetValue(entry, out result))
{
return(result);
}
string pdbIndexPath = null;
foreach (SymPathElement element in SymbolElements)
{
if (element.IsSymServer)
{
if (pdbIndexPath == null)
{
pdbIndexPath = GetIndexPath(pdbSimpleName, pdbIndexGuid, pdbIndexAge);
}
string targetPath = TryGetFileFromServer(element.Target, pdbIndexPath, element.Cache ?? SymbolCache);
if (targetPath != null)
{
WriteLine("Found pdb {0} from server '{1}' on path '{2}'. Copied to '{3}'.", pdbSimpleName, element.Target, pdbIndexPath, targetPath);
_pdbCache[entry] = targetPath;
return(targetPath);
}
else
{
WriteLine("No matching pdb found on server '{0}' on path '{1}'.", element.Target, pdbIndexPath);
}
}
else
{
string fullPath = Path.Combine(element.Target, pdbSimpleName);
if (PdbMatches(fullPath, pdbIndexGuid, pdbIndexAge))
{
_pdbCache[entry] = fullPath;
return(fullPath);
}
}
}
return(null);
}