Rename our allwpilib (which is now 2020) to not have 2019 in the name
Change-Id: I3c07f85ed32ab8b97db765a9b43f2a6ce7da964a
diff --git a/wpiutil/src/main/native/unix/StackTrace.cpp b/wpiutil/src/main/native/unix/StackTrace.cpp
new file mode 100644
index 0000000..be28080
--- /dev/null
+++ b/wpiutil/src/main/native/unix/StackTrace.cpp
@@ -0,0 +1,37 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2008-2019 FIRST. All Rights Reserved. */
+/* Open Source Software - may be modified and shared by FRC teams. The code */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project. */
+/*----------------------------------------------------------------------------*/
+
+#include "wpi/StackTrace.h"
+
+#include <execinfo.h>
+
+#include "wpi/Demangle.h"
+#include "wpi/SmallString.h"
+#include "wpi/raw_ostream.h"
+
+namespace wpi {
+
+std::string GetStackTrace(int offset) {
+ void* stackTrace[128];
+ int stackSize = backtrace(stackTrace, 128);
+ char** mangledSymbols = backtrace_symbols(stackTrace, stackSize);
+ wpi::SmallString<1024> buf;
+ wpi::raw_svector_ostream trace(buf);
+
+ for (int i = offset; i < stackSize; i++) {
+ // Only print recursive functions once in a row.
+ if (i == 0 || stackTrace[i] != stackTrace[i - 1]) {
+ trace << "\tat " << Demangle(mangledSymbols[i]) << "\n";
+ }
+ }
+
+ std::free(mangledSymbols);
+
+ return trace.str();
+}
+
+} // namespace wpi