include/lttng/ust-compiler.h

   1 #ifndef _LTTNG_UST_COMPILER_H
   2 #define _LTTNG_UST_COMPILER_H
   3
   4 /*
   5  * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *                       Paul Woegerer <paul_woegerer@mentor.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 #define lttng_ust_notrace __attribute__((no_instrument_function))
  28 #define LTTNG_PACKED    __attribute__((__packed__))
  29
  30 /*
  31  * Clang supports the no_sanitize variable attribute on global variables.
  32  * GCC only supports the no_sanitize_address function attribute, which is
  33  * not what we need.
  34  */
  35 #if defined(__clang__)
  36 # if __has_feature(address_sanitizer)
  37 #  define __lttng_ust_variable_attribute_no_sanitize_address \
  38         __attribute__((no_sanitize("address")))
  39 # else
  40 #  define __lttng_ust_variable_attribute_no_sanitize_address
  41 # endif
  42 #else
  43 #  define __lttng_ust_variable_attribute_no_sanitize_address
  44 #endif
  45
  46 #endif /* _LTTNG_UST_COMPILER_H */