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#ifndef __dbg_h__
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#define __dbg_h__
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#ifdef NDEBUG
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#define debug(M, ...)
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#else
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#define debug(M, ...) fprintf(stderr, "DEBUG %s:%d:%s: " M "\n", __FILE__, __LINE__, __func__, ##__VA_ARGS__)
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#endif
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#define clean_errno() (errno == 0 ? "None" : strerror(errno))
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#define log_err(M, ...) fprintf(stderr, "[ERROR] (%s:%d:%s: errno: %s) " M "\n", __FILE__, __LINE__, __func__, clean_errno(), ##__VA_ARGS__)
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#define log_warn(M, ...) fprintf(stderr, "[WARN] (%s:%d:%s: errno: %s) " M "\n", __FILE__, __LINE__, __func__, clean_errno(), ##__VA_ARGS__)
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#define log_info(M, ...) fprintf(stderr, "[INFO] (%s:%d:%s) " M "\n", __FILE__, __LINE__, __func__, ##__VA_ARGS__)
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#define check(A, M, ...) if(!(A)) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }
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#define sentinel(M, ...) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }
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#define check_mem(A) check((A), "Out of memory.")
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#define check_debug(A, M, ...) if(!(A)) { debug(M, ##__VA_ARGS__); errno=0; goto error; }
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#endif
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