//
//===----------------------------------------------------------------------===//
-#include "llvm/Support/Process.h"
#include "llvm/Config/config.h"
-#include <cstdlib>
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Process.h"
-namespace llvm {
+using namespace llvm;
using namespace sys;
//===----------------------------------------------------------------------===//
//=== independent code.
//===----------------------------------------------------------------------===//
-unsigned llvm::sys::Process::GetRandomNumber() {
-#if defined(HAVE_ARC4RANDOM)
- return arc4random();
-#else
- static int x = (::srand(::time(NULL)), 0);
- return ::rand();
-#endif
+// Empty virtual destructor to anchor the vtable for the process class.
+process::~process() {}
+
+self_process *process::get_self() {
+ // Use a function local static for thread safe initialization and allocate it
+ // as a raw pointer to ensure it is never destroyed.
+ static self_process *SP = new self_process();
+
+ return SP;
+}
+
+// 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
+// racy accesses during shutdown.
+self_process::~self_process() {
+ 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();
+}
+
+
+#define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m"
+
+#define ALLCOLORS(FGBG,BOLD) {\
+ COLOR(FGBG, "0", BOLD),\
+ COLOR(FGBG, "1", BOLD),\
+ COLOR(FGBG, "2", BOLD),\
+ COLOR(FGBG, "3", BOLD),\
+ COLOR(FGBG, "4", BOLD),\
+ COLOR(FGBG, "5", BOLD),\
+ COLOR(FGBG, "6", BOLD),\
+ COLOR(FGBG, "7", BOLD)\
+ }
+
+static const char colorcodes[2][2][8][10] = {
+ { ALLCOLORS("3",""), ALLCOLORS("3","1;") },
+ { ALLCOLORS("4",""), ALLCOLORS("4","1;") }
+};
+
// Include the platform-specific parts of this class.
#ifdef LLVM_ON_UNIX
#include "Unix/Process.inc"