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6d2c51466e
These macros are NOT a proposal for a definitive new logging API. They are just a step for it: a way to mark all usage patterns of the logfile/loglevel variables on a single place. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6333 c046a42c-6fe2-441c-8c8c-71466251a162
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
#ifndef QEMU_LOG_H
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#define QEMU_LOG_H
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/* The deprecated global variables: */
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extern FILE *logfile;
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extern int loglevel;
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/*
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* The new API:
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*
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*/
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/* Log settings checking macros: */
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/* Returns true if qemu_log() will really write somewhere
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*/
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#define qemu_log_enabled() (logfile != NULL)
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/* Returns true if a bit is set in the current loglevel mask
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*/
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#define qemu_loglevel_mask(b) ((loglevel & (b)) != 0)
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/* Logging functions: */
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/* main logging function
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*/
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#define qemu_log(...) do { \
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if (logfile) \
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fprintf(logfile, ## __VA_ARGS__); \
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} while (0)
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/* vfprintf-like logging function
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*/
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#define qemu_log_vprintf(fmt, va) do { \
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if (logfile) \
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vfprintf(logfile, fmt, va); \
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} while (0)
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/* log only if a bit is set on the current loglevel mask
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*/
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#define qemu_log_mask(b, ...) do { \
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if (loglevel & (b)) \
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fprintf(logfile, ## __VA_ARGS__); \
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} while (0)
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/* Special cases: */
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/* cpu_dump_state() logging functions: */
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#define log_cpu_state(env, f) cpu_dump_state((env), logfile, fprintf, (f));
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#define log_cpu_state_mask(b, env, f) do { \
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if (loglevel & (b)) log_cpu_state((env), (f)); \
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} while (0)
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/* disas() and target_disas() to logfile: */
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#define log_target_disas(start, len, flags) \
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target_disas(logfile, (start), (len), (flags))
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#define log_disas(start, len) \
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disas(logfile, (start), (len))
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/* page_dump() output to the log file: */
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#define log_page_dump() page_dump(logfile)
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/* Maintenance: */
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/* fflush() the log file */
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#define qemu_log_flush() fflush(logfile)
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/* Close the log file */
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#define qemu_log_close() do { \
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fclose(logfile); \
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logfile = NULL; \
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} while (0)
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/* Set up a new log file */
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#define qemu_log_set_file(f) do { \
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logfile = (f); \
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} while (0)
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/* Set up a new log file, only if none is set */
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#define qemu_log_try_set_file(f) do { \
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if (!logfile) \
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logfile = (f); \
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} while (0)
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#endif
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