/*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 EfficiOS Inc.
* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* SPDX-License-Identifier: GPL-2.0-only
})
#endif
-
-/*
- * The min and max macros are not needed in C++ (std::min and std::max are
- * preferred) and they conflict with some C++ header file. Don't define them
- * when compiling C++ source.
- */
-#ifndef __cplusplus
-
-# ifndef max
-# define max(a, b) ((a) > (b) ? (a) : (b))
-# endif
-
-# ifndef min
-# define min(a, b) ((a) < (b) ? (a) : (b))
-# endif
-
-# ifndef max_t
-# define max_t(type, a, b) max((type) a, (type) b)
-# endif
-
-# ifndef min_t
-# define min_t(type, a, b) min((type) a, (type) b)
-# endif
-
-#endif
-
#ifndef LTTNG_PACKED
#define LTTNG_PACKED __attribute__((__packed__))
#endif
#endif
#endif
-#define is_signed(type) (((type) -1) < (type) 1)
-
#define member_sizeof(type, field) sizeof(((type *) 0)->field)
#define ASSERT_LOCKED(lock) LTTNG_ASSERT(pthread_mutex_trylock(&lock))
+#define ASSERT_RCU_READ_LOCKED(lock) LTTNG_ASSERT(rcu_read_ongoing())
-/*
- * Get an aligned pointer to a value. This is meant
- * as a helper to pass an aligned pointer to a member in a packed structure
- * to a function.
- */
-#define ALIGNED_CONST_PTR(value) (((const typeof(value) []) { value }))
+/* Attribute suitable to tag functions as having printf()-like arguments. */
+#define ATTR_FORMAT_PRINTF(_string_index, _first_to_check) \
+ __attribute__((format(printf, _string_index, _first_to_check)))
+
+/* Attribute suitable to tag functions as having strftime()-like arguments. */
+#define ATTR_FORMAT_STRFTIME(_string_index) \
+ __attribute__((format(strftime, _string_index, 0)))
+
+/* Macros used to ignore specific compiler diagnostics. */
+
+#define DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+#define DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+
+#if defined(__clang__)
+ /* Clang */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+# define DIAGNOSTIC_IGNORE_LOGICAL_OP
+#else
+ /* GCC */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT \
+ _Pragma("GCC diagnostic ignored \"-Wsuggest-attribute=format\"")
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+# define DIAGNOSTIC_IGNORE_LOGICAL_OP \
+ _Pragma("GCC diagnostic ignored \"-Wlogical-op\"")
+#endif
+
+/* Used to make specific C++ functions to C code. */
+#ifdef __cplusplus
+#define C_LINKAGE extern "C"
+#else
+#define C_LINKAGE
+#endif
/*
* lttng_strncpy returns 0 on success, or nonzero on failure.
* It checks that the @src string fits into @dst_len before performing
* the copy. On failure, no copy has been performed.
*
+ * Assumes that 'src' is null-terminated.
+ *
* dst_len includes the string's trailing NULL.
*/
static inline
int lttng_strncpy(char *dst, const char *src, size_t dst_len)
{
- if (lttng_strnlen(src, dst_len) >= dst_len) {
+ if (strlen(src) >= dst_len) {
/* Fail since copying would result in truncation. */
return -1;
}