internal async Task <SourceLineMap> GetLinesForFile(string file)
{
string fileKey = file;
lock (_mapFileToLinenums)
{
if (_mapFileToLinenums.ContainsKey(fileKey))
{
return(_mapFileToLinenums[fileKey]);
}
}
SourceLineMap linesMap = null;
linesMap = await LinesForFile(fileKey);
lock (_mapFileToLinenums)
{
if (_mapFileToLinenums.ContainsKey(fileKey))
{
return(_mapFileToLinenums[fileKey]);
}
if (linesMap != null)
{
_mapFileToLinenums.Add(fileKey, linesMap);
}
else
{
_mapFileToLinenums.Add(fileKey, new SourceLineMap(0)); // empty list to prevent requerying. Release this list on dynamic library loading
}
return(_mapFileToLinenums[fileKey]);
}
}
private async Task <SourceLineMap> LinesForFile(string file)
{
string cmd = "-symbol-list-lines " + _process.EscapePath(file);
Results results = await _process.CmdAsync(cmd, ResultClass.None);
if (results.ResultClass != ResultClass.done)
{
return(null);
}
ValueListValue lines = results.Find <ValueListValue>("lines");
SourceLineMap linesMap = new SourceLineMap(lines.Content.Length);
for (int i = 0; i < lines.Content.Length; ++i)
{
ulong addr = lines.Content[i].FindAddr("pc");
uint line = lines.Content[i].FindUint("line");
linesMap.Add(addr, line);
}
return(linesMap);
}
private async Task <SourceLineMap> LinesForFile(string file)
{
string cmd = "-symbol-list-lines " + _process.EscapeSymbolPath(file);
Results results = await _process.CmdAsync(cmd, ResultClass.None);
if (results.ResultClass != ResultClass.done)
{
return(null);
}
ValueListValue lines = results.Find <ValueListValue>("lines");
SourceLineMap linesMap = new SourceLineMap(lines.Content.Length);
for (int i = 0; i < lines.Content.Length; ++i)
{
ulong addr = lines.Content[i].FindAddr("pc");
uint line = lines.Content[i].FindUint("line");
if (linesMap.ContainsKey(addr))
{
// It is actually fairly common for an address to map to more than one line. For instance,
// in debug builds destructors can have an entry to line 0 as well as one to the correct line.
// Release builds with inlining will hit this very often.
// Unforunately, without more context, it is impossible to know which line is the "right" line.
// For the inline case, any line will be acceptable. For the destructor case, we should prefer
// a non-zero line.
if (linesMap[addr].Line == 0)
{
linesMap.Replace(addr, line);
}
}
else
{
linesMap.Add(addr, line);
}
}
return(linesMap);
}