91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
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// Copyright 2023 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef JNI_ZERO_LOGGING_H_
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#define JNI_ZERO_LOGGING_H_
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#include "third_party/jni_zero/jni_export.h"
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#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
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#define JNI_ZERO_DCHECK_IS_ON() false
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#else
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#define JNI_ZERO_DCHECK_IS_ON() true
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#endif
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// Simplified version of Google's logging. Adapted from perfetto's
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// implementation.
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namespace jni_zero {
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// Constexpr functions to extract basename(__FILE__), e.g.: ../foo/f.c -> f.c .
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constexpr const char* StrEnd(const char* s) {
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return *s ? StrEnd(s + 1) : s;
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}
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constexpr const char* BasenameRecursive(const char* s,
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const char* begin,
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const char* end) {
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return (*s == '/' && s < end)
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? (s + 1)
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: ((s > begin) ? BasenameRecursive(s - 1, begin, end) : s);
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}
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constexpr const char* Basename(const char* str) {
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return BasenameRecursive(StrEnd(str), str, StrEnd(str));
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}
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enum LogLev { kLogInfo = 0, kLogError, kLogFatal };
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struct LogMessageCallbackArgs {
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LogLev level;
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int line;
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const char* filename;
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const char* message;
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};
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using LogMessageCallback = void (*)(LogMessageCallbackArgs);
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// This is not thread safe and must be called before using tracing from other
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// threads.
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JNI_ZERO_COMPONENT_BUILD_EXPORT void SetLogMessageCallback(
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LogMessageCallback callback);
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JNI_ZERO_COMPONENT_BUILD_EXPORT void LogMessage(LogLev,
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const char* fname,
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int line,
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const char* fmt,
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...)
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__attribute__((__format__(__printf__, 4, 5)));
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#define JNI_ZERO_IMMEDIATE_CRASH() \
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do { \
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__builtin_trap(); \
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__builtin_unreachable(); \
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} while (0)
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#define JNI_ZERO_XLOG(level, fmt, ...) \
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::jni_zero::LogMessage(level, ::jni_zero::Basename(__FILE__), __LINE__, fmt, \
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##__VA_ARGS__)
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#define JNI_ZERO_ILOG(fmt, ...) \
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JNI_ZERO_XLOG(::jni_zero::kLogInfo, fmt, ##__VA_ARGS__)
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#define JNI_ZERO_ELOG(fmt, ...) \
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JNI_ZERO_XLOG(::jni_zero::kLogError, fmt, ##__VA_ARGS__)
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#define JNI_ZERO_FLOG(fmt, ...) \
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JNI_ZERO_XLOG(::jni_zero::kLogFatal, fmt, ##__VA_ARGS__)
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#define JNI_ZERO_CHECK(x) \
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do { \
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if (__builtin_expect(!(x), 0)) { \
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JNI_ZERO_FLOG("%s", "JNI_ZERO_CHECK(" #x ")"); \
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} \
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} while (0)
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#if JNI_ZERO_DCHECK_IS_ON()
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#define JNI_ZERO_DCHECK(x) JNI_ZERO_CHECK(x)
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#else
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#define JNI_ZERO_DCHECK(x) \
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do { \
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} while (false && (x))
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#endif
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} // namespace jni_zero
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#endif // JNI_ZERO_LOGGING_H_
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