configure: add '-Wlogical-op' to warning flags

[lttng-tools.git] / src / common / macros.h

diff --git a/src/common/macros.h b/src/common/macros.h
index 7530c912a98251160b608e0bc0b4bf4daefff42e..3e175735083a9df7d390cdad5cc5fa43a20c4c26 100644 (file)
--- a/src/common/macros.h
+++ b/src/common/macros.h
@@ -1,5 +1,5 @@
 /*
- * 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
@@ -57,32 +57,6 @@ void *zmalloc(size_t len)
        })
 #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
@@ -100,6 +74,43 @@ void *zmalloc(size_t len)
 #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())
+
+/* 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.