1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/checks.h" 6 7 #if V8_LIBC_GLIBC || V8_OS_BSD 8 # include <cxxabi.h> 9 # include <execinfo.h> 10 #elif V8_OS_QNX 11 # include <backtrace.h> 12 #endif // V8_LIBC_GLIBC || V8_OS_BSD 13 #include <stdio.h> 14 15 #include "src/platform.h" 16 #include "src/v8.h" 17 18 namespace v8 { 19 namespace internal { 20 21 intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; } 22 23 // Attempts to dump a backtrace (if supported). 24 void DumpBacktrace() { 25 #if V8_LIBC_GLIBC || V8_OS_BSD 26 void* trace[100]; 27 int size = backtrace(trace, ARRAY_SIZE(trace)); 28 char** symbols = backtrace_symbols(trace, size); 29 OS::PrintError("\n==== C stack trace ===============================\n\n"); 30 if (size == 0) { 31 OS::PrintError("(empty)\n"); 32 } else if (symbols == NULL) { 33 OS::PrintError("(no symbols)\n"); 34 } else { 35 for (int i = 1; i < size; ++i) { 36 OS::PrintError("%2d: ", i); 37 char mangled[201]; 38 if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) { // NOLINT 39 int status; 40 size_t length; 41 char* demangled = abi::__cxa_demangle(mangled, NULL, &length, &status); 42 OS::PrintError("%s\n", demangled != NULL ? demangled : mangled); 43 free(demangled); 44 } else { 45 OS::PrintError("??\n"); 46 } 47 } 48 } 49 free(symbols); 50 #elif V8_OS_QNX 51 char out[1024]; 52 bt_accessor_t acc; 53 bt_memmap_t memmap; 54 bt_init_accessor(&acc, BT_SELF); 55 bt_load_memmap(&acc, &memmap); 56 bt_sprn_memmap(&memmap, out, sizeof(out)); 57 OS::PrintError(out); 58 bt_addr_t trace[100]; 59 int size = bt_get_backtrace(&acc, trace, ARRAY_SIZE(trace)); 60 OS::PrintError("\n==== C stack trace ===============================\n\n"); 61 if (size == 0) { 62 OS::PrintError("(empty)\n"); 63 } else { 64 bt_sprnf_addrs(&memmap, trace, size, const_cast<char*>("%a\n"), 65 out, sizeof(out), NULL); 66 OS::PrintError(out); 67 } 68 bt_unload_memmap(&memmap); 69 bt_release_accessor(&acc); 70 #endif // V8_LIBC_GLIBC || V8_OS_BSD 71 } 72 73 } } // namespace v8::internal 74 75 76 // Contains protection against recursive calls (faults while handling faults). 77 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) { 78 fflush(stdout); 79 fflush(stderr); 80 i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line); 81 va_list arguments; 82 va_start(arguments, format); 83 i::OS::VPrintError(format, arguments); 84 va_end(arguments); 85 i::OS::PrintError("\n#\n"); 86 v8::internal::DumpBacktrace(); 87 fflush(stderr); 88 i::OS::Abort(); 89 } 90 91 92 void CheckEqualsHelper(const char* file, 93 int line, 94 const char* expected_source, 95 v8::Handle<v8::Value> expected, 96 const char* value_source, 97 v8::Handle<v8::Value> value) { 98 if (!expected->Equals(value)) { 99 v8::String::Utf8Value value_str(value); 100 v8::String::Utf8Value expected_str(expected); 101 V8_Fatal(file, line, 102 "CHECK_EQ(%s, %s) failed\n# Expected: %s\n# Found: %s", 103 expected_source, value_source, *expected_str, *value_str); 104 } 105 } 106 107 108 void CheckNonEqualsHelper(const char* file, 109 int line, 110 const char* unexpected_source, 111 v8::Handle<v8::Value> unexpected, 112 const char* value_source, 113 v8::Handle<v8::Value> value) { 114 if (unexpected->Equals(value)) { 115 v8::String::Utf8Value value_str(value); 116 V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %s", 117 unexpected_source, value_source, *value_str); 118 } 119 } 120
