Signed-off-by: Mathieu Desnoyers <[email protected]> --- drivers/staging/lttng/lib/bug.h | 29 +++++++++++++++++++++++++++++ 1 files changed, 29 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/lttng/lib/bug.h
diff --git a/drivers/staging/lttng/lib/bug.h b/drivers/staging/lttng/lib/bug.h new file mode 100644 index 0000000..8243cc9 --- /dev/null +++ b/drivers/staging/lttng/lib/bug.h @@ -0,0 +1,29 @@ +#ifndef _LTTNG_BUG_H +#define _LTTNG_BUG_H + +/* + * lib/bug.h + * + * (C) Copyright 2010-2011 - Mathieu Desnoyers <[email protected]> + * + * Dual LGPL v2.1/GPL v2 license. + */ + +/** + * BUILD_RUNTIME_BUG_ON - check condition at build (if constant) or runtime + * @condition: the condition which should be false. + * + * If the condition is a constant and true, the compiler will generate a build + * error. If the condition is not constant, a BUG will be triggered at runtime + * if the condition is ever true. If the condition is constant and false, no + * code is emitted. + */ +#define BUILD_RUNTIME_BUG_ON(condition) \ + do { \ + if (__builtin_constant_p(condition)) \ + BUILD_BUG_ON(condition); \ + else \ + BUG_ON(condition); \ + } while (0) + +#endif -- 1.7.2.5 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
