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C Codegen - generating top funs when a top fun calls another top fun #116

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C Codegen - generating top funs when a top fun calls another top fun #116

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13 changes: 9 additions & 4 deletions src/main/scala/lms/core/codegen/c_codegen.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -294,15 +294,20 @@ class ExtendedCCodeGen extends CompactCodeGen with ExtendedCodeGen {
protected val ongoingFun = new mutable.HashSet[String]()
def registerTopLevelFunction(id: String, streamId: String = "general")(f: => Unit) =
if (!registeredFunctions(id)) {
if (ongoingFun(streamId)) ???
ongoingFun += streamId
var stream = streamId
if (ongoingFun(stream)) {
// create a new stream for the other function
// this happens when another top-level function is called while generating a top level function
stream += "-other"
}
ongoingFun += stream
registeredFunctions += id
withStream(functionsStreams.getOrElseUpdate(streamId, {
withStream(functionsStreams.getOrElseUpdate(stream, {
val functionsStream = new ByteArrayOutputStream()
val functionsWriter = new PrintStream(functionsStream)
(functionsWriter, functionsStream)
})._1)(f)
ongoingFun -= streamId
ongoingFun -= stream
}
protected val functionDeclsStreams = new mutable.LinkedHashMap[String, (PrintStream, ByteArrayOutputStream)]()
def registerTopLevelFunctionDecl(id: String, streamId: String = "general")(f: => Unit) = {
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