2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/public-api/common/dali-common.h>
26 #ifndef EMSCRIPTEN // cxxabi not supported
27 # include <execinfo.h>
34 #include <dali/integration-api/debug.h>
38 const int MAX_NUM_STACK_FRAMES = 25;
39 const size_t C_SYMBOL_LENGTH = 4096;
45 #if defined(BACKTRACE_ENABLED)
47 std::string Demangle(const char* symbol)
51 // backtrace ::= <filename>'('['_'<mangled-symbol>'_']['+'<offset>]')'
52 // Only want <mangled-symbol>:
53 const char* openParen = strchr(symbol, '(');
56 const char* startOfToken = openParen + 1;
57 const char* plus = strchr(startOfToken, '+');
58 const char* closeParen = strchr(startOfToken, ')');
59 const char* endOfToken = NULL;
64 else if(closeParen != NULL)
66 endOfToken = closeParen;
68 if(endOfToken != NULL)
70 size_t tokenLength = endOfToken - startOfToken;
72 // Allocate space for symbol
73 char *mangledSymbol = (char*)malloc(tokenLength+1u);
74 strncpy(mangledSymbol, startOfToken, tokenLength);
75 mangledSymbol[tokenLength] = '\0';
80 demangled = abi::__cxa_demangle( mangledSymbol, NULL, &size, &status );
81 if( demangled != NULL )
84 free(demangled); // demangle() allocates returned string, so free it
97 DALI_EXPORT_API DaliException::DaliException(const char *location, const char* condition)
98 : mLocation(location), mCondition(condition)
100 // Note, if a memory error has occured, then the backtrace won't work - backtrace_symbols relies on
101 // allocating memory.
103 // Initial dlog error message is output in DALI_ASSERT_ALWAYS macro
104 // Also output on stderr
105 fprintf(stderr, "Exception: \n%s\n thrown at %s\nSee dlog for backtrace\n", mCondition.c_str(), mLocation.c_str());
107 DALI_LOG_ERROR_NOFN("Backtrace:\n");
109 void* frameArray[MAX_NUM_STACK_FRAMES];
110 int nSize = backtrace(frameArray, MAX_NUM_STACK_FRAMES);
111 char** symbols = backtrace_symbols(frameArray, nSize);
112 for(int i=1; i< nSize; i++)
114 std::string demangled_symbol = Demangle(symbols[i]);
115 DALI_LOG_ERROR_NOFN("[%02d] %s\n", i, demangled_symbol.c_str() );
121 #else // BACKTRACE_ENABLED
124 DALI_EXPORT_API DaliException::DaliException(const char *location, const char* condition)
125 : mLocation(location), mCondition(condition)
127 printf("Exception: \n%s\n thrown at %s\nSee dlog for backtrace\n", mCondition.c_str(), mLocation.c_str());
131 #endif // BACKTRACE_ENABLED
134 DALI_EXPORT_API void DaliAssertMessage(const char* condition, const char* file, int line)
136 DALI_LOG_ERROR_NOFN( "Assertion (%s) failed in: %s:%d\n", condition, file, line );