//===----------------------------------------------------------------------===//
#include "llvm/Config/config.h"
-#include "llvm/Support/Process.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Process.h"
-namespace llvm {
+using namespace llvm;
using namespace sys;
//===----------------------------------------------------------------------===//
return SP;
}
+#if defined(_MSC_VER)
+// Visual Studio complains that the self_process destructor never exits. This
+// doesn't make much sense, as that's the whole point of calling abort... Just
+// silence this warning.
+#pragma warning(push)
+#pragma warning(disable:4722)
+#endif
+
// The destructor for the self_process subclass must never actually be
// executed. There should be at most one instance of this class, and that
// instance should live until the process terminates to avoid the potential for
llvm_unreachable("This destructor must never be executed!");
}
+/// \brief A helper function to compute the elapsed wall-time since the program
+/// started.
+///
+/// Note that this routine actually computes the elapsed wall time since the
+/// first time it was called. However, we arrange to have it called during the
+/// startup of the process to get approximately correct results.
+static TimeValue getElapsedWallTime() {
+ static TimeValue &StartTime = *new TimeValue(TimeValue::now());
+ return TimeValue::now() - StartTime;
}
+/// \brief A special global variable to ensure we call \c getElapsedWallTime
+/// during global initialization of the program.
+///
+/// Note that this variable is never referenced elsewhere. Doing so could
+/// create race conditions during program startup or shutdown.
+static volatile TimeValue DummyTimeValue = getElapsedWallTime();
+
+// Implement this routine by using the static helpers above. They're already
+// portable.
+TimeValue self_process::get_wall_time() const {
+ return getElapsedWallTime();
+}
+
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+
// Include the platform-specific parts of this class.
#ifdef LLVM_ON_UNIX
#include "Unix/Process.inc"