Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / util / usage.c

diff --git a/kernel/tools/perf/util/usage.c b/kernel/tools/perf/util/usage.c
new file mode 100644 (file)
index 0000000..4007aca
--- /dev/null
+++ b/kernel/tools/perf/util/usage.c
@@ -0,0 +1,84 @@
+/*
+ * usage.c
+ *
+ * Various reporting routines.
+ * Originally copied from GIT source.
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "util.h"
+#include "debug.h"
+
+static void report(const char *prefix, const char *err, va_list params)
+{
+       char msg[1024];
+       vsnprintf(msg, sizeof(msg), err, params);
+       fprintf(stderr, " %s%s\n", prefix, msg);
+}
+
+static NORETURN void usage_builtin(const char *err)
+{
+       fprintf(stderr, "\n Usage: %s\n", err);
+       exit(129);
+}
+
+static NORETURN void die_builtin(const char *err, va_list params)
+{
+       report(" Fatal: ", err, params);
+       exit(128);
+}
+
+static void error_builtin(const char *err, va_list params)
+{
+       report(" Error: ", err, params);
+}
+
+static void warn_builtin(const char *warn, va_list params)
+{
+       report(" Warning: ", warn, params);
+}
+
+/* If we are in a dlopen()ed .so write to a global variable would segfault
+ * (ugh), so keep things static. */
+static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
+static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
+static void (*error_routine)(const char *err, va_list params) = error_builtin;
+static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
+
+void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN)
+{
+       die_routine = routine;
+}
+
+void usage(const char *err)
+{
+       usage_routine(err);
+}
+
+void die(const char *err, ...)
+{
+       va_list params;
+
+       va_start(params, err);
+       die_routine(err, params);
+       va_end(params);
+}
+
+int error(const char *err, ...)
+{
+       va_list params;
+
+       va_start(params, err);
+       error_routine(err, params);
+       va_end(params);
+       return -1;
+}
+
+void warning(const char *warn, ...)
+{
+       va_list params;
+
+       va_start(params, warn);
+       warn_routine(warn, params);
+       va_end(params);
+}