Log EVMC trace messages to vmtrace channel

ethereum · Aug 2, 2018 · 0e83df0 · 0e83df0
1 parent 86801a9
commit 0e83df0
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Showing 2 changed files with 10 additions and 5 deletions.
diff --git a/libevm/EVMC.cpp b/libevm/EVMC.cpp
@@ -35,14 +35,17 @@ EVMC::EVMC(evmc_instance* _instance) : EVM(_instance)
         // TODO: It might be easier to just pass instruction from VM.
         char const* name = evmc->m_instructionNames[evmc->m_code[_codeOffset]];
 
-        std::cerr << "EVMC "
-                  << " " << evmc->m_step++ << " " << _codeOffset << " " << name << " "
-                  << _statusCode << " " << _gasLeft << " " << _stackNumItems;
+        std::ostringstream logMessage;
+        logMessage << "EVMC "
+                   << " " << evmc->m_step++ << " " << _codeOffset << " " << name << " "
+                   << _statusCode << " " << _gasLeft << " " << _stackNumItems;
 
         if (_pushedStackItem)
-            std::cerr << " +[" << fromEvmC(*_pushedStackItem) << "]";
+            logMessage << " +[" << fromEvmC(*_pushedStackItem) << "]";
 
-        std::cerr << " " << _memorySize << "\n";
+        logMessage << " " << _memorySize;
+
+        LOG(evmc->m_vmTraceLogger) << logMessage.str();
     };
 
     _instance->set_tracer(_instance, tracer, reinterpret_cast<evmc_tracer_context*>(this));

diff --git a/libevm/EVMC.h b/libevm/EVMC.h
@@ -99,6 +99,8 @@ class EVMC : public EVM, public VMFace
     bytesConstRef m_code;
     int m_step = 0;
     char const* const* m_instructionNames = nullptr;
+
+    Logger m_vmTraceLogger{createLogger(VerbosityTrace, "vmtrace")};
 };
 }
 }