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// Copyright 2006-2008 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "checks.h"
#if V8_LIBC_GLIBC || V8_OS_BSD
# include <cxxabi.h>
# include <execinfo.h>
#elif V8_OS_QNX
# include <backtrace.h>
#endif // V8_LIBC_GLIBC || V8_OS_BSD
#include <stdio.h>
#include "platform.h"
#include "v8.h"
namespace v8 {
namespace internal {
intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; }
// Attempts to dump a backtrace (if supported).
void DumpBacktrace() {
#if V8_LIBC_GLIBC || V8_OS_BSD
void* trace[100];
int size = backtrace(trace, ARRAY_SIZE(trace));
char** symbols = backtrace_symbols(trace, size);
OS::PrintError("\n==== C stack trace ===============================\n\n");
if (size == 0) {
OS::PrintError("(empty)\n");
} else if (symbols == NULL) {
OS::PrintError("(no symbols)\n");
} else {
for (int i = 1; i < size; ++i) {
OS::PrintError("%2d: ", i);
char mangled[201];
if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) { // NOLINT
int status;
size_t length;
char* demangled = abi::__cxa_demangle(mangled, NULL, &length, &status);
OS::PrintError("%s\n", demangled != NULL ? demangled : mangled);
free(demangled);
} else {
OS::PrintError("??\n");
}
}
}
free(symbols);
#elif V8_OS_QNX
char out[1024];
bt_accessor_t acc;
bt_memmap_t memmap;
bt_init_accessor(&acc, BT_SELF);
bt_load_memmap(&acc, &memmap);
bt_sprn_memmap(&memmap, out, sizeof(out));
OS::PrintError(out);
bt_addr_t trace[100];
int size = bt_get_backtrace(&acc, trace, ARRAY_SIZE(trace));
OS::PrintError("\n==== C stack trace ===============================\n\n");
if (size == 0) {
OS::PrintError("(empty)\n");
} else {
bt_sprnf_addrs(&memmap, trace, size, const_cast<char*>("%a\n"),
out, sizeof(out), NULL);
OS::PrintError(out);
}
bt_unload_memmap(&memmap);
bt_release_accessor(&acc);
#endif // V8_LIBC_GLIBC || V8_OS_BSD
}
} } // namespace v8::internal
// Contains protection against recursive calls (faults while handling faults).
extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
fflush(stdout);
fflush(stderr);
i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line);
va_list arguments;
va_start(arguments, format);
i::OS::VPrintError(format, arguments);
va_end(arguments);
i::OS::PrintError("\n#\n");
v8::internal::DumpBacktrace();
fflush(stderr);
i::OS::Abort();
}
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) {
if (!expected->Equals(value)) {
v8::String::Utf8Value value_str(value);
v8::String::Utf8Value expected_str(expected);
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n# Expected: %s\n# Found: %s",
expected_source, value_source, *expected_str, *value_str);
}
}
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) {
if (unexpected->Equals(value)) {
v8::String::Utf8Value value_str(value);
V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %s",
unexpected_source, value_source, *value_str);
}
}
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