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 i::AllowHandleDereference allow_deref; 40 i::AllowDeferredHandleDereference allow_deferred_deref; 41 fflush(stdout); 42 fflush(stderr); 43 fatal_error_handler_nesting_depth++; 44 // First time we try to print an error message 45 if (fatal_error_handler_nesting_depth < 2) { 46 i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line); 47 va_list arguments; 48 va_start(arguments, format); 49 i::OS::VPrintError(format, arguments); 50 va_end(arguments); 51 i::OS::PrintError("\n#\n"); 52 i::OS::DumpBacktrace(); 53 } 54 // First two times we may try to print a stack dump. 55 if (fatal_error_handler_nesting_depth < 3) { 56 if (i::FLAG_stack_trace_on_abort) { 57 // Call this one twice on double fault 58 i::Isolate::Current()->PrintStack(stderr); 59 } 60 } 61 i::OS::Abort(); 62 } 63 64 65 void CheckEqualsHelper(const char* file, 66 int line, 67 const char* expected_source, 68 v8::Handle<v8::Value> expected, 69 const char* value_source, 70 v8::Handle<v8::Value> value) { 71 if (!expected->Equals(value)) { 72 v8::String::Utf8Value value_str(value); 73 v8::String::Utf8Value expected_str(expected); 74 V8_Fatal(file, line, 75 "CHECK_EQ(%s, %s) failed\n# Expected: %s\n# Found: %s", 76 expected_source, value_source, *expected_str, *value_str); 77 } 78 } 79 80 81 void CheckNonEqualsHelper(const char* file, 82 int line, 83 const char* unexpected_source, 84 v8::Handle<v8::Value> unexpected, 85 const char* value_source, 86 v8::Handle<v8::Value> value) { 87 if (unexpected->Equals(value)) { 88 v8::String::Utf8Value value_str(value); 89 V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %s", 90 unexpected_source, value_source, *value_str); 91 } 92 } 93 94 95 void API_Fatal(const char* location, const char* format, ...) { 96 i::OS::PrintError("\n#\n# Fatal error in %s\n# ", location); 97 va_list arguments; 98 va_start(arguments, format); 99 i::OS::VPrintError(format, arguments); 100 va_end(arguments); 101 i::OS::PrintError("\n#\n\n"); 102 i::OS::Abort(); 103 } 104 105 106 namespace v8 { namespace internal { 107 108 bool EnableSlowAsserts() { return FLAG_enable_slow_asserts; } 109 110 intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; } 111 112 } } // namespace v8::internal 113 114
