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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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libc/log/log.h Normal file
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#ifndef COSMOPOLITAN_LIBC_LOG_LOG_H_
#define COSMOPOLITAN_LIBC_LOG_LOG_H_
#include "libc/dce.h"
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § liblog ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
#define kLogFatal 0u
#define kLogError 1u
#define kLogWarn 2u
#define kLogInfo 3u
#define kLogDebug 4u
/**
* Log level for compile-time DCE.
*/
#ifndef LOGGABLELEVEL
#ifndef NDEBUG
#define LOGGABLELEVEL kLogDebug
#elif IsTiny()
#define LOGGABLELEVEL kLogFatal
#else
#define LOGGABLELEVEL kLogInfo
#endif
#endif
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct sigset;
struct winsize;
struct StackFrame;
typedef struct FILE FILE;
extern FILE *g_logfile;
void backtrace(FILE *) relegated; /* shows fn backtrace and args */
void perror(const char *) relegated; /* print the last system error */
void die(void) relegated noreturn; /* print backtrace and abort() */
void meminfo(FILE *); /* shows malloc statistics &c. */
void memsummary(FILE *); /* light version of same thing */
uint16_t getttycols(uint16_t);
int getttysize(int, struct winsize *) paramsnonnull();
bool cancolor(void) nothrow nocallback;
bool isterminalinarticulate(void) nosideeffect;
char *commandvenv(const char *, const char *) nodiscard;
void showmappings(FILE *);
void showcrashreports(void);
void callexitontermination(struct sigset *);
bool32 IsDebuggerPresent(bool);
bool isrunningundermake(void);
void showbacktrace(FILE *, const struct StackFrame *);
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § liblog » logging ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
extern unsigned g_loglevel; /* log level for runtime check */
#define LOGGABLE(LEVEL) \
((!isconstant(LEVEL) || (LEVEL) <= LOGGABLELEVEL) && (LEVEL) <= g_loglevel)
#define LOGF(FMT, ...) \
do { \
if (LOGGABLE(kLogInfo)) { \
flogf(kLogInfo, __FILE__, __LINE__, NULL, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VFLOG(FMT, VA) \
do { \
if (LOGGABLE(kLogInfo)) { \
vflogf(kLogInfo, __FILE__, __LINE__, NULL, FMT, VA); \
} \
} while (0)
#define FLOGF(F, FMT, ...) \
do { \
if (LOGGABLE(kLogInfo)) { \
flogf(kLogInfo, __FILE__, __LINE__, F, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VFLOGF(F, FMT, VA) \
do { \
if (LOGGABLE(kLogInfo)) { \
vflogf(kLogInfo, __FILE__, __LINE__, F, FMT, VA); \
} \
} while (0)
#define WARNF(FMT, ...) \
do { \
if (LOGGABLE(kLogWarn)) { \
flogf(kLogWarn, __FILE__, __LINE__, NULL, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VWARNF(FMT, VA) \
do { \
if (LOGGABLE(kLogWarn)) { \
vflogf(kLogWarn, __FILE__, __LINE__, NULL, FMT, VA); \
} \
} while (0)
#define FWARNF(F, FMT, ...) \
do { \
if (LOGGABLE(kLogWarn)) { \
flogf(kLogWarn, __FILE__, __LINE__, F, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VFWARNF(F, FMT, VA) \
do { \
if (LOGGABLE(kLogWarn)) { \
vflogf(kLogWarn, __FILE__, __LINE__, F, FMT, VA); \
} \
} while (0)
#define FATALF(FMT, ...) \
do { \
ffatalf(kLogFatal, __FILE__, __LINE__, NULL, FMT, ##__VA_ARGS__); \
unreachable; \
} while (0)
#define VFATALF(FMT, VA) \
do { \
vffatalf(kLogFatal, __FILE__, __LINE__, NULL, FMT, VA); \
unreachable; \
} while (0)
#define FFATALF(F, FMT, ...) \
do { \
ffatalf(kLogFatal, __FILE__, __LINE__, F, FMT, ##__VA_ARGS__); \
unreachable; \
} while (0)
#define VFFATALF(F, FMT, VA) \
do { \
vffatalf(kLogFatal, __FILE__, __LINE__, F, FMT, VA); \
unreachable; \
} while (0)
#define DEBUGF(FMT, ...) \
do { \
if (LOGGABLE(kLogDebug)) { \
fdebugf(kLogDebug, __FILE__, __LINE__, NULL, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VDEBUGF(FMT, VA) \
do { \
if (LOGGABLE(kLogDebug)) { \
vfdebugf(kLogDebug, __FILE__, __LINE__, NULL, FMT, VA); \
} \
} while (0)
#define FDEBUGF(F, FMT, ...) \
do { \
if (LOGGABLE(kLogDebug)) { \
fdebugf(kLogDebug, __FILE__, __LINE__, F, FMT, ##__VA_ARGS__); \
} \
} while (0)
#define VFDEBUGF(F, FMT, VA) \
do { \
if (LOGGABLE(kLogDebug)) { \
vfdebugf(kLogDebug, __FILE__, __LINE__, F, FMT, VA); \
} \
} while (0)
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § liblog » on error resume next ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
#define LOGIFNEG1(FORM) \
({ \
autotype(FORM) Ax = (FORM); \
if (Ax == (typeof(Ax))(-1) && LOGGABLE(kLogWarn)) { \
__logerrno(__FILE__, __LINE__, #FORM); \
} \
Ax; \
})
#define LOGIFNULL(FORM) \
({ \
autotype(FORM) Ax = (FORM); \
if (Ax == NULL && LOGGABLE(kLogWarn)) { \
__logerrno(__FILE__, __LINE__, #FORM); \
} \
Ax; \
})
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § liblog » implementation details ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
void __logerrno(const char *, int, const char *) relegated;
#define ARGS unsigned, const char *, int, FILE *, const char *
#define ATTR paramsnonnull((5)) printfesque(5)
#define ATTRV paramsnonnull((5, 6))
void flogf(ARGS, ...) ATTR libcesque;
void vflogf(ARGS, va_list) ATTRV libcesque;
void fdebugf(ARGS, ...) asm("flogf") ATTR relegated libcesque;
void vfdebugf(ARGS, va_list) asm("vflogf") ATTRV relegated libcesque;
void ffatalf(ARGS, ...) asm("flogf") ATTR relegated noreturn libcesque;
void vffatalf(ARGS, va_list) asm("vflogf") ATTRV relegated noreturn libcesque;
#undef ARGS
#undef ATTR
#undef ATTRV
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_LOG_LOG_H_ */