debug.h

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extern int dbg_printf(const char *format, ...);

#if defined(NDEBUG)
        #define NEED_LOCK_TEST_BEGIN
        #define NEED_LOCK_TEST_END
#else
        #define NEED_LOCK_TEST_BEGIN \
                static int __need_lock = 0; \
                if (__need_lock) { \
                        dbg_printf("[%s:%d] need_lock <<<<<<<<<<<<<\n", __func__, __LINE__); \
                        while (1) { \
                        } \
                } \
                __need_lock = 1;


        #define NEED_LOCK_TEST_END \
                __need_lock = 0;
#endif