From 6d2c51466e694895ed6cfe4b4bc8cd40300947bd Mon Sep 17 00:00:00 2001 From: aliguori Date: Thu, 15 Jan 2009 21:52:11 +0000 Subject: Define macros that will become the new logging API (Eduardo Habkost) 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 Signed-off-by: Anthony Liguori git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6333 c046a42c-6fe2-441c-8c8c-71466251a162 --- qemu-log.h | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) diff --git a/qemu-log.h b/qemu-log.h index 1ebea81c54..fccfb1100e 100644 --- a/qemu-log.h +++ b/qemu-log.h @@ -1,7 +1,93 @@ #ifndef QEMU_LOG_H #define QEMU_LOG_H +/* The deprecated global variables: */ extern FILE *logfile; extern int loglevel; + +/* + * The new API: + * + */ + +/* Log settings checking macros: */ + +/* Returns true if qemu_log() will really write somewhere + */ +#define qemu_log_enabled() (logfile != NULL) + +/* Returns true if a bit is set in the current loglevel mask + */ +#define qemu_loglevel_mask(b) ((loglevel & (b)) != 0) + + +/* Logging functions: */ + +/* main logging function + */ +#define qemu_log(...) do { \ + if (logfile) \ + fprintf(logfile, ## __VA_ARGS__); \ + } while (0) + +/* vfprintf-like logging function + */ +#define qemu_log_vprintf(fmt, va) do { \ + if (logfile) \ + vfprintf(logfile, fmt, va); \ + } while (0) + +/* log only if a bit is set on the current loglevel mask + */ +#define qemu_log_mask(b, ...) do { \ + if (loglevel & (b)) \ + fprintf(logfile, ## __VA_ARGS__); \ + } while (0) + + + + +/* Special cases: */ + +/* cpu_dump_state() logging functions: */ +#define log_cpu_state(env, f) cpu_dump_state((env), logfile, fprintf, (f)); +#define log_cpu_state_mask(b, env, f) do { \ + if (loglevel & (b)) log_cpu_state((env), (f)); \ + } while (0) + +/* disas() and target_disas() to logfile: */ +#define log_target_disas(start, len, flags) \ + target_disas(logfile, (start), (len), (flags)) +#define log_disas(start, len) \ + disas(logfile, (start), (len)) + +/* page_dump() output to the log file: */ +#define log_page_dump() page_dump(logfile) + + + +/* Maintenance: */ + +/* fflush() the log file */ +#define qemu_log_flush() fflush(logfile) + +/* Close the log file */ +#define qemu_log_close() do { \ + fclose(logfile); \ + logfile = NULL; \ + } while (0) + +/* Set up a new log file */ +#define qemu_log_set_file(f) do { \ + logfile = (f); \ + } while (0) + +/* Set up a new log file, only if none is set */ +#define qemu_log_try_set_file(f) do { \ + if (!logfile) \ + logfile = (f); \ + } while (0) + + #endif -- cgit v1.2.3