v8  3.14.5(node0.10.28)
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checks.cc
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
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5 //
6 // * Redistributions of source code must retain the above copyright
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8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
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11 // with the distribution.
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14 // from this software without specific prior written permission.
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16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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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 
106 
107  intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; }
108 
109 } } // namespace v8::internal
110 
void API_Fatal(const char *location, const char *format,...)
Definition: checks.cc:92
bool FLAG_enable_slow_asserts
const intptr_t kHeapObjectTagMask
Definition: v8.h:4011
V8EXPORT bool Equals(Handle< Value > that) const
Definition: api.cc:2684
void V8_Fatal(const char *file, int line, const char *format,...)
Definition: checks.cc:38
static void Abort()
static void VPrintError(const char *format, va_list args)
intptr_t HeapObjectTagMask()
Definition: checks.cc:107
bool EnableSlowAsserts()
Definition: checks.cc:105
static void PrintError(const char *format,...)
void CheckNonEqualsHelper(const char *file, int line, const char *unexpected_source, v8::Handle< v8::Value > unexpected, const char *value_source, v8::Handle< v8::Value > value)
Definition: checks.cc:78
void CheckEqualsHelper(const char *file, int line, const char *expected_source, v8::Handle< v8::Value > expected, const char *value_source, v8::Handle< v8::Value > value)
Definition: checks.cc:62