1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mozglue/linker/Logging.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,83 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef Logging_h
1.9 +#define Logging_h
1.10 +
1.11 +#include "mozilla/Likely.h"
1.12 +
1.13 +#ifdef ANDROID
1.14 +#include <android/log.h>
1.15 +#define LOG(...) __android_log_print(ANDROID_LOG_ERROR, "GeckoLinker", __VA_ARGS__)
1.16 +#else
1.17 +#include <cstdio>
1.18 +
1.19 +/* Expand to 1 or m depending on whether there is one argument or more
1.20 + * given. */
1.21 +#define MOZ_ONE_OR_MORE_ARGS_IMPL2(_1, _2, _3, _4, _5, _6, _7, _8, _9, N, ...) \
1.22 + N
1.23 +#define MOZ_ONE_OR_MORE_ARGS_IMPL(args) MOZ_ONE_OR_MORE_ARGS_IMPL2 args
1.24 +#define MOZ_ONE_OR_MORE_ARGS(...) \
1.25 + MOZ_ONE_OR_MORE_ARGS_IMPL((__VA_ARGS__, m, m, m, m, m, m, m, m, 1, 0))
1.26 +
1.27 +#define MOZ_MACRO_GLUE(a, b) a b
1.28 +#define MOZ_CONCAT2(a, b) a ## b
1.29 +#define MOZ_CONCAT1(a, b) MOZ_CONCAT2(a, b)
1.30 +#define MOZ_CONCAT(a, b) MOZ_CONCAT1(a, b)
1.31 +
1.32 +/* Some magic to choose between LOG1 and LOGm depending on the number of
1.33 + * arguments */
1.34 +#define MOZ_CHOOSE_LOG(...) \
1.35 + MOZ_MACRO_GLUE(MOZ_CONCAT(LOG, MOZ_ONE_OR_MORE_ARGS(__VA_ARGS__)), \
1.36 + (__VA_ARGS__))
1.37 +
1.38 +#define LOG1(format) fprintf(stderr, format "\n")
1.39 +#define LOGm(format, ...) fprintf(stderr, format "\n", __VA_ARGS__)
1.40 +#define LOG(...) MOZ_CHOOSE_LOG(__VA_ARGS__)
1.41 +
1.42 +#endif
1.43 +
1.44 +class Logging
1.45 +{
1.46 +public:
1.47 + static bool isVerbose()
1.48 + {
1.49 + return Singleton.verbose;
1.50 + }
1.51 +
1.52 +private:
1.53 + bool verbose;
1.54 +
1.55 +public:
1.56 + static void Init()
1.57 + {
1.58 + const char *env = getenv("MOZ_DEBUG_LINKER");
1.59 + if (env && *env == '1')
1.60 + Singleton.verbose = true;
1.61 + }
1.62 +
1.63 +private:
1.64 + static Logging Singleton;
1.65 +};
1.66 +
1.67 +#define DEBUG_LOG(...) \
1.68 + do { \
1.69 + if (MOZ_UNLIKELY(Logging::isVerbose())) { \
1.70 + LOG(__VA_ARGS__); \
1.71 + } \
1.72 + } while(0)
1.73 +
1.74 +#if defined(__LP64__)
1.75 +# define PRIxAddr "lx"
1.76 +# define PRIxSize "lx"
1.77 +# define PRIdSize "ld"
1.78 +# define PRIuSize "lu"
1.79 +#else
1.80 +# define PRIxAddr "x"
1.81 +# define PRIxSize "x"
1.82 +# define PRIdSize "d"
1.83 +# define PRIuSize "u"
1.84 +#endif
1.85 +
1.86 +#endif /* Logging_h */
