/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef Logging_h
#define Logging_h
#include <cstdlib>
#include "mozilla/Likely.h"
#include "mozilla/MacroArgs.h"
#ifdef ANDROID
# include <android/log.h>
# define LOG(...) \
__android_log_print(ANDROID_LOG_INFO,
"GeckoLinker", __VA_ARGS__)
# define WARN(...) \
__android_log_print(ANDROID_LOG_WARN,
"GeckoLinker", __VA_ARGS__)
# define ERROR(...) \
__android_log_print(ANDROID_LOG_ERROR,
"GeckoLinker", __VA_ARGS__)
#else
# include <cstdio>
/* Expand to 1 or m depending on whether there is one argument or more
* given. */
# define MOZ_ONE_OR_MORE_ARGS_IMPL2(_1, _2, _3, _4, _5, _6, _7, _8, _9, N, \
...) \
N
# define MOZ_ONE_OR_MORE_ARGS_IMPL(args) MOZ_ONE_OR_MORE_ARGS_IMPL2 args
# define MOZ_ONE_OR_MORE_ARGS(...) \
MOZ_ONE_OR_MORE_ARGS_IMPL((__VA_ARGS__, m, m, m, m, m, m, m, m, 1, 0))
# define MOZ_MACRO_GLUE(a, b) a b
/* Some magic to choose between LOG1 and LOGm depending on the number of
* arguments */
# define MOZ_CHOOSE_LOG(...) \
MOZ_MACRO_GLUE(MOZ_CONCAT(LOG, MOZ_ONE_OR_MORE_ARGS(__VA_ARGS__)), \
(__VA_ARGS__))
# define LOG1(format) fprintf(stderr, format
"\n")
# define LOGm(format, ...) fprintf(stderr, format
"\n", __VA_ARGS__)
# define LOG(...) MOZ_CHOOSE_LOG(__VA_ARGS__)
# define WARN(...) MOZ_CHOOSE_LOG(
"Warning: " __VA_ARGS__)
# define ERROR(...) MOZ_CHOOSE_LOG(
"Error: " __VA_ARGS__)
#endif
class Logging {
public:
static bool isVerbose() {
return Singleton.verbose; }
private:
bool verbose;
public:
static void Init() {
const char* env = getenv(
"MOZ_DEBUG_LINKER");
if (env && *env ==
'1') Singleton.verbose =
true;
}
private:
static Logging Singleton;
};
#define DEBUG_LOG(...) \
do { \
if (MOZ_UNLIKELY(Logging::isVerbose())) { \
LOG(__VA_ARGS__); \
} \
}
while (0)
#endif /* Logging_h */
