85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
// Copyright (c) 2012 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "client/linux/log/log.h"
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#if defined(__ANDROID__)
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#include <android/log.h>
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#include <dlfcn.h>
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#else
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#include "third_party/lss/linux_syscall_support.h"
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#endif
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namespace logger {
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#if defined(__ANDROID__)
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namespace {
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// __android_log_buf_write() is not exported in the NDK and is being used by
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// dynamic runtime linking. Its declaration is taken from Android's
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// system/core/include/log/log.h.
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using AndroidLogBufferWriteFunc = int (*)(int bufID, int prio, const char *tag,
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const char *text);
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const int kAndroidCrashLogId = 4; // From LOG_ID_CRASH in log.h.
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const char kAndroidLogTag[] = "google-breakpad";
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bool g_crash_log_initialized = false;
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AndroidLogBufferWriteFunc g_android_log_buf_write = nullptr;
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} // namespace
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void initializeCrashLogWriter() {
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if (g_crash_log_initialized)
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return;
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g_android_log_buf_write = reinterpret_cast<AndroidLogBufferWriteFunc>(
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dlsym(RTLD_DEFAULT, "__android_log_buf_write"));
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g_crash_log_initialized = true;
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}
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int writeToCrashLog(const char* buf) {
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// Try writing to the crash log ring buffer. If not available, fall back to
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// the standard log buffer.
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if (g_android_log_buf_write) {
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return g_android_log_buf_write(kAndroidCrashLogId, ANDROID_LOG_FATAL,
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kAndroidLogTag, buf);
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}
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return __android_log_write(ANDROID_LOG_FATAL, kAndroidLogTag, buf);
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}
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#endif
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int write(const char* buf, size_t nbytes) {
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#if defined(__ANDROID__)
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return __android_log_write(ANDROID_LOG_WARN, kAndroidLogTag, buf);
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#else
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return sys_write(2, buf, nbytes);
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#endif
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}
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} // namespace logger
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