/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#ifndef FOLLY_EXCEPTION_H_
-#define FOLLY_EXCEPTION_H_
+#pragma once
#include <errno.h>
// The *Explicit functions take an explicit value for errno.
// Helper to throw std::system_error
-FOLLY_NORETURN void throwSystemErrorExplicit(int err, const char*);
-inline void throwSystemErrorExplicit(int err, const char* msg) {
+[[noreturn]] inline void throwSystemErrorExplicit(int err, const char* msg) {
throw std::system_error(err, std::system_category(), msg);
}
template <class... Args>
-FOLLY_NORETURN void throwSystemErrorExplicit(int, Args&&... args);
-template <class... Args>
-void throwSystemErrorExplicit(int err, Args&&... args) {
+[[noreturn]] void throwSystemErrorExplicit(int err, Args&&... args) {
throwSystemErrorExplicit(
err, to<fbstring>(std::forward<Args>(args)...).c_str());
}
// Helper to throw std::system_error from errno and components of a string
template <class... Args>
-FOLLY_NORETURN void throwSystemError(Args&&... args);
-template <class... Args>
-void throwSystemError(Args&&... args) {
+[[noreturn]] void throwSystemError(Args&&... args) {
throwSystemErrorExplicit(errno, std::forward<Args>(args)...);
}
template <class... Args>
void checkKernelError(ssize_t ret, Args&&... args) {
if (UNLIKELY(ret < 0)) {
- throwSystemErrorExplicit(-ret, std::forward<Args>(args)...);
+ throwSystemErrorExplicit(int(-ret), std::forward<Args>(args)...);
}
}
}
}
-} // namespace folly
-
-#endif /* FOLLY_EXCEPTION_H_ */
-
+/**
+ * If cond is not true, raise an exception of type E. E must have a ctor that
+ * works with const char* (a description of the failure).
+ */
+#define CHECK_THROW(cond, E) \
+ do { \
+ if (!(cond)) { \
+ throw E("Check failed: " #cond); \
+ } \
+ } while (0)
+
+} // namespace folly