#include <stdlib.h>
#include <string.h>
+#include <memory>
+#include <pthread.h>
#include <type_traits>
/*
template <typename T>
struct can_malloc
{
+ /*
+ * gcc versions before 5.0 lack some type traits defined in C++11.
+ * Since in this instance we use the trait to prevent misuses
+ * of malloc (and statically assert) and not to generate different
+ * code based on this property, simply set value to true and allow
+ * the code to compile. Anyone using a contemporary compiler will
+ * catch the error.
+ */
+#if __GNUG__ && __GNUC__ < 5
+ static constexpr bool value = true;
+#else
static constexpr bool value = std::is_trivially_constructible<T>::value;
+#endif
};
/*
*/
template<typename T>
-struct is_pod_or_void
+struct can_free
{
- static constexpr bool value = std::is_pod<T>::value || std::is_void<T>::value;
+ /*
+ * gcc versions before 5.0 lack some type traits defined in C++11.
+ * Since in this instance we use the trait to prevent misuses
+ * of free (and statically assert) and not to generate different
+ * code based on this property, simply set value to true and allow
+ * the code to compile. Anyone using a contemporary compiler will
+ * catch the error.
+ */
+#if __GNUG__ && __GNUC__ < 5
+ static constexpr bool value = true;
+#else
+ static constexpr bool value = std::is_trivially_destructible<T>::value || std::is_void<T>::value;
+#endif
};
-template<typename T, typename = typename std::enable_if<!is_pod_or_void<T>::value>::type>
+template<typename T, typename = typename std::enable_if<!can_free<T>::value>::type>
void free(T *p) = delete;
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(array) (sizeof(array) / (sizeof((array)[0])))
+template<typename T>
+struct can_memset
+{
+ static constexpr bool value = std::is_pod<T>::value || std::is_void<T>::value;
+};
+
+template <typename T, typename = typename std::enable_if<!can_memset<T>::value>::type>
+void *memset(T *s, int c, size_t n) = delete;
+
+template<typename T>
+struct can_memcpy
+{
+ /*
+ * gcc versions before 5.0 lack some type traits defined in C++11.
+ * Since in this instance we use the trait to prevent misuses
+ * of memcpy (and statically assert) and not to generate different
+ * code based on this property, simply set value to true and allow
+ * the code to compile. Anyone using a contemporary compiler will
+ * catch the error.
+ */
+#if __GNUG__ && __GNUC__ < 5
+ static constexpr bool value = true;
+#else
+ static constexpr bool value = std::is_trivially_copyable<T>::value;
#endif
+};
+
+template <typename T, typename U,
+ typename = typename std::enable_if<!can_memcpy<T>::value>::type,
+ typename = typename std::enable_if<!can_memcpy<U>::value>::type>
+void *memcpy(T *d, const U *s, size_t n) = delete;
+
+template<typename T>
+struct can_memmove
+{
+ /*
+ * gcc versions before 5.0 lack some type traits defined in C++11.
+ * Since in this instance we use the trait to prevent misuses
+ * of memmove (and statically assert) and not to generate different
+ * code based on this property, simply set value to true and allow
+ * the code to compile. Anyone using a contemporary compiler will
+ * catch the error.
+ */
+#if __GNUG__ && __GNUC__ < 5
+ static constexpr bool value = true;
+#else
+ static constexpr bool value = std::is_trivially_copyable<T>::value;
+#endif
+};
-#ifndef container_of
-#define container_of(ptr, type, member) \
- ({ \
- const typeof(((type *)NULL)->member) * __ptr = (ptr); \
- (type *)((char *)__ptr - offsetof(type, member)); \
- })
+template <typename T, typename U,
+ typename = typename std::enable_if<!can_memmove<T>::value>::type,
+ typename = typename std::enable_if<!can_memmove<U>::value>::type>
+void *memmove(T *d, const U *s, size_t n) = delete;
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(array) (sizeof(array) / (sizeof((array)[0])))
#endif
#ifndef LTTNG_PACKED
# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
_Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
# define DIAGNOSTIC_IGNORE_LOGICAL_OP
+# define DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
+# define DIAGNOSTIC_IGNORE_INVALID_OFFSETOF
+ _Pragma("GCC diagnostic ignored \"-Winvalid-offsetof\"")
#else
/* GCC */
# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT \
_Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
# define DIAGNOSTIC_IGNORE_LOGICAL_OP \
_Pragma("GCC diagnostic ignored \"-Wlogical-op\"")
+#if __GNUG__ && __GNUC__ >= 7
+# define DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES \
+ _Pragma("GCC diagnostic ignored \"-Wduplicated-branches\"")
+#else
+# define DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
+#endif /* __GNUG__ && __GNUC__ >= 7 */
+# define DIAGNOSTIC_IGNORE_INVALID_OFFSETOF \
+ _Pragma("GCC diagnostic ignored \"-Winvalid-offsetof\"")
#endif
/* Used to make specific C++ functions to C code. */
return 0;
}
+namespace lttng {
+namespace utils {
+template <class Parent, class Member>
+Parent *container_of(const Member *member, const Member Parent::*ptr_to_member)
+{
+ const Parent *dummy_parent = nullptr;
+ auto *offset_of_member = reinterpret_cast<const char *>(&(dummy_parent->*ptr_to_member));
+ auto address_of_parent = reinterpret_cast<const char *>(member) - offset_of_member;
+
+ return reinterpret_cast<Parent *>(address_of_parent);
+}
+} /* namespace utils */
+} /* namespace lttng */
+
#endif /* _MACROS_H */
projects / lttng-tools.git / blobdiff