Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* log-for-trace.h: logging basics required by the trace.h generated
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* by the log trace backend.
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*
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* This should not be included directly by any .c file: if you
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* need to use the logging functions include "qemu/log.h".
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*
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* The purpose of splitting these parts out into their own header
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* is to catch the easy mistake where a .c file includes trace.h
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* but forgets to include qemu/log.h. Without this split, that
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* would result in the .c file compiling fine when the default
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* trace backend is in use but failing to compile with any other
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* backend.
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*
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* This code is licensed under the GNU General Public License,
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* version 2 or (at your option) any later version.
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*/
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#ifndef QEMU_LOG_FOR_TRACE_H
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#define QEMU_LOG_FOR_TRACE_H
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/* Private global variable, don't use */
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extern unsigned qemu_loglevel;
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#define LOG_TRACE (1u << 15)
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/* Returns true if a bit is set in the current loglevel mask */
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static inline bool qemu_loglevel_mask(int mask)
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{
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return (qemu_loglevel & mask) != 0;
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}
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/**
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* qemu_log: report a log message
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* @fmt: the format string for the message
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* @...: the format string arguments
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*
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* This will emit a log message to the current output stream.
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*
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* The @fmt string should normally represent a complete line
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* of text, and thus end with a newline character.
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*
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* While it is possible to incrementally output fragments of
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* a complete line using qemu_log, this is inefficient and
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* races with other threads. For outputting fragments it is
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* strongly preferred to use the qemu_log_trylock() method
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* combined with fprintf().
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*/
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void G_GNUC_PRINTF(1, 2) qemu_log(const char *fmt, ...);
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#endif
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