debug_stream.cpp

#include <cassert>
#include "smaug/utility/debug_stream.h"
 
namespace smaug {
 
static int globalDebugLevel = -1;
static DebugStream nullStream(false);
static DebugStream debugStream(true);
 
void initDebugStream(int debugLevel) {
    assert(globalDebugLevel == -1 &&
           "Debug stream cannot initialized more than once!");
    globalDebugLevel = debugLevel;
}
 
const DebugStream& dout(int debugLevel) {
    if (debugLevel >= 0 && debugLevel <= globalDebugLevel)
        return debugStream;
    return nullStream;
}
 
}  // namespace smaug