1 #ifndef __DALI_COMMON_H__
2 #define __DALI_COMMON_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
26 #include <emscripten/emscripten.h>
29 * Definitions for shared library support
31 * If a library is configured with --enable-exportall or --enable-debug
32 * then HIDE_DALI_INTERNALS is not defined, and nothing is hidden.
33 * If it is configured without these options (the default), then HIDE_INTERNALS
34 * is defined when building the library, visibility is automatically hidden, and the explicit
35 * defines below come into use.
36 * When building a library that uses DALI, HIDE_DALI_INTERNALS
39 # ifndef HIDE_DALI_INTERNALS
40 # define DALI_EXPORT_API
41 # define DALI_IMPORT_API
42 # define DALI_INTERNAL
44 # define DALI_EXPORT_API __attribute__ ((visibility ("default")))
45 # define DALI_IMPORT_API __attribute__ ((visibility ("default")))
46 # define DALI_INTERNAL __attribute__ ((visibility ("hidden")))
49 /** Visibility attribute to show method definitions */
50 # define DALI_EXPORT_API
51 /** Visibility attribute to show declarations */
52 # define DALI_IMPORT_API
53 /** Visibility attribute to hide declarations */
54 # define DALI_INTERNAL
57 #if defined (__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103L)
61 // C++0x not supported
70 // clang cpp11 check is per feature
71 #if !__has_feature(cxx_constexpr)
72 # error constexpr needed for compile-time-math. Use -std=c+11
80 * @brief The DALi namespace
86 * @brief Method to log assertion message in DALI_ASSERT_ALWAYS macro below.
88 * @param[in] condition The assertion condition
89 * @param[in] file The file in which the assertion occurred
90 * @param[in] line The line number at which the assertion occured
92 DALI_IMPORT_API void DaliAssertMessage(const char* condition, const char* file, int line);
95 * @brief Exception class for Dali Core library - Raised by assertions in codebase.
97 class DALI_IMPORT_API DaliException
101 * @brief Constructor.
103 * Will always display a backtrace when raised in a debug build.
105 * @param[in] location - the location of the assertion
106 * @param[in] condition - The assertion condition
108 DALI_IMPORT_API DaliException(const char *location, const char* condition);
110 std::string mLocation; ///< Location in code of the assertion
111 std::string mCondition; ///< The assertion string
117 * @brief An invariant concurrent assertion to ensure its argument always evaluates TRUE.
119 * Use this for rules that must always be true regardless of build options.
120 * For example, Actor must only ever have one parent.
121 * To be clear, this test remains compiled into release builds that are deployed
123 * Semantically, a failure of this test is signalling that dali is giving up and
125 * Since we don't catch the exception, a failure on any thread other than event
126 * will propagate up the call stack and kill that thread.
127 * A failure on the event thread may give the application an opportunity to
128 * recover if there is an application-written exception handler on the call
129 * stack between the throw site and the thread root and the application is built
130 * with a compatible ABI.
131 * Handle this macro with care at the level you would if it expanded to:
132 * if(!cond) { exit(EXIT_FAILURE); }
133 * (which it is often equivalent to in effect).
134 * It should not be used for simple parameter validation for instance.
138 #define DALI_ASSERT_ALWAYS(cond) \
141 Dali::DaliAssertMessage(#cond, __FILE__, __LINE__); \
142 throw Dali::DaliException(__PRETTY_FUNCTION__, #cond); \
143 EM_ASM(print(new Error().stack)); \
148 #define DALI_ASSERT_ALWAYS(cond) \
151 Dali::DaliAssertMessage(#cond, __FILE__, __LINE__); \
152 throw Dali::DaliException(__PRETTY_FUNCTION__, #cond); \
158 * @brief An invariant concurrent assertion to ensure its argument evaluates TRUE in debug builds.
160 * Use this to sanity check algorithms and prevent internal programming errors
162 #if defined(DEBUG_ENABLED)
163 #define DALI_ASSERT_DEBUG(cond) DALI_ASSERT_ALWAYS(cond)
165 #define DALI_ASSERT_DEBUG(cond)
168 #endif // __DALI_COMMON_H__