Siva Annamalai
159a5ab366
We have a racy read of the object header in the stack frame walker called from the profiler (in this case the gc marker is running at the same time). It is appropriate to avoid this even though we think the access is safe as the objects are in old space and never forwarded and only the mark bits are manipulated while marking BUG= R=johnmccutchan@google.com Review URL: https://codereview.chromium.org/2517473002 .
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/assert.h"
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#include "platform/globals.h"
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#include "vm/os.h"
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#include "vm/profiler.h"
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namespace dart {
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bool DynamicAssertionHelper::failed_ = false;
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void DynamicAssertionHelper::Fail(const char* format, ...) {
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// Take only the last 1KB of the file name if it is longer.
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const intptr_t file_len = strlen(file_);
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const intptr_t file_offset = (file_len > (1 * KB)) ? file_len - (1 * KB) : 0;
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const char* file = file_ + file_offset;
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// Print the file and line number into the buffer.
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char buffer[4 * KB];
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MSAN_UNPOISON(buffer, sizeof(buffer));
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intptr_t file_and_line_length =
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snprintf(buffer, sizeof(buffer), "%s: %d: error: ", file, line_);
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// Print the error message into the buffer.
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va_list arguments;
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va_start(arguments, format);
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vsnprintf(buffer + file_and_line_length,
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sizeof(buffer) - file_and_line_length, format, arguments);
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va_end(arguments);
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// Print the buffer on stderr and/or syslog.
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OS::PrintErr("%s\n", buffer);
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// In case of failed assertions, abort right away. Otherwise, wait
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// until the program is exiting before producing a non-zero exit
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// code through abort.
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if (kind_ == ASSERT) {
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NOT_IN_PRODUCT(Profiler::DumpStackTrace());
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OS::Abort();
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}
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failed_ = true;
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}
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} // namespace dart
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