1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #include <stdarg.h> 29 30 #include "v8.h" 31 32 #include "platform.h" 33 34 // TODO(isolates): is it necessary to lift this? 35 static int fatal_error_handler_nesting_depth = 0; 36 37 // Contains protection against recursive calls (faults while handling faults). 38 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) { 39 fflush(stdout); 40 fflush(stderr); 41 fatal_error_handler_nesting_depth++; 42 // First time we try to print an error message 43 if (fatal_error_handler_nesting_depth < 2) { 44 i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line); 45 va_list arguments; 46 va_start(arguments, format); 47 i::OS::VPrintError(format, arguments); 48 va_end(arguments); 49 i::OS::PrintError("\n#\n\n"); 50 } 51 // First two times we may try to print a stack dump. 52 if (fatal_error_handler_nesting_depth < 3) { 53 if (i::FLAG_stack_trace_on_abort) { 54 // Call this one twice on double fault 55 i::Isolate::Current()->PrintStack(); 56 } 57 } 58 i::OS::Abort(); 59 } 60 61 62 void CheckEqualsHelper(const char* file, 63 int line, 64 const char* expected_source, 65 v8::Handle<v8::Value> expected, 66 const char* value_source, 67 v8::Handle<v8::Value> value) { 68 if (!expected->Equals(value)) { 69 v8::String::Utf8Value value_str(value); 70 v8::String::Utf8Value expected_str(expected); 71 V8_Fatal(file, line, 72 "CHECK_EQ(%s, %s) failed\n# Expected: %s\n# Found: %s", 73 expected_source, value_source, *expected_str, *value_str); 74 } 75 } 76 77 78 void CheckNonEqualsHelper(const char* file, 79 int line, 80 const char* unexpected_source, 81 v8::Handle<v8::Value> unexpected, 82 const char* value_source, 83 v8::Handle<v8::Value> value) { 84 if (unexpected->Equals(value)) { 85 v8::String::Utf8Value value_str(value); 86 V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %s", 87 unexpected_source, value_source, *value_str); 88 } 89 } 90 91 92 void API_Fatal(const char* location, const char* format, ...) { 93 i::OS::PrintError("\n#\n# Fatal error in %s\n# ", location); 94 va_list arguments; 95 va_start(arguments, format); 96 i::OS::VPrintError(format, arguments); 97 va_end(arguments); 98 i::OS::PrintError("\n#\n\n"); 99 i::OS::Abort(); 100 } 101 102 103 namespace v8 { namespace internal { 104 105 bool EnableSlowAsserts() { return FLAG_enable_slow_asserts; } 106 107 intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; } 108 109 } } // namespace v8::internal 110 111
