Comment #2 on issue 307 by [email protected]: Print stack trace to a string
instead of on a FILE.
http://code.google.com/p/v8/issues/detail?id=307
(Although I work for Google, I am not a v8 or chrome developer and do not
speak for
them)
A workaround for this is to use v8::Debug::Call() and look through the
exe_state
object. There is an array of frames and each frame has a reference to a
function
object through the func() property you can look at. Here's a C++ string
constant
with a script used to grab a stacktrace as a formatted string:
"function frameBackTrace_(exec_state, fromFrame, toFrame) {"
" var result = undefined;"
" try {"
" var total_frames = exec_state.frameCount();"
" if (total_frames === 0) return result;"
" var from_index = fromFrame ? fromFrame : 0;"
" var to_index = toFrame ? toFrame : 10;"
" to_index = Math.min(total_frames, to_index);"
" var frames = [];"
" for (var i = from_index; i < to_index; i++) {"
" var frame = exec_state.frame(i);"
" var sourceLineNumber = frame.sourceLine();"
" var sourceColumnNumber = frame.sourceColumn();"
" var func = frame.func();"
" var name = func ? func.name() : '';"
" var inferredName = func ? func.inferredName() : '';"
" var script = func.resolved() ? func.script() : undefined;"
" var sourceName = script ? script.name() : '(unresolved)';"
" var comma = ',';"
" frames.push(String(i) + comma + sourceName + comma +
String(sourceLineNumber)"
" + comma + String(sourceColumnNumber) + comma + name + comma +
inferredName);"
" }"
" if (frames.length > 0)"
" result = frames.join(';');"
" } catch (ex) {"
" result = String(ex);"
" }"
" return result;"
"}"
"function frameBackTrace(exec_state) {"
" return frameBackTrace_(exec_state, 0, 10);"
"}"));
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