LXR qemu/qemu-log.h

   1#ifndef QEMU_LOG_H
   2#define QEMU_LOG_H
   3
   4/* The deprecated global variables: */
   5extern FILE *logfile;
   6extern int loglevel;
   7
   8
   9/* 
  10 * The new API:
  11 *
  12 */
  13
  14/* Log settings checking macros: */
  15
  16/* Returns true if qemu_log() will really write somewhere
  17 */
  18#define qemu_log_enabled() (logfile != NULL)
  19
  20/* Returns true if a bit is set in the current loglevel mask
  21 */
  22#define qemu_loglevel_mask(b) ((loglevel & (b)) != 0)
  23
  24
  25/* Logging functions: */
  26
  27/* main logging function
  28 */
  29#define qemu_log(...) do {                 \
  30        if (logfile)                       \
  31            fprintf(logfile, ## __VA_ARGS__); \
  32    } while (0)
  33
  34/* vfprintf-like logging function
  35 */
  36#define qemu_log_vprintf(fmt, va) do {     \
  37        if (logfile)                       \
  38            vfprintf(logfile, fmt, va);    \
  39    } while (0)
  40
  41/* log only if a bit is set on the current loglevel mask
  42 */
  43#define qemu_log_mask(b, ...) do {         \
  44        if (loglevel & (b))                \
  45            fprintf(logfile, ## __VA_ARGS__); \
  46    } while (0)
  47
  48
  49
  50
  51/* Special cases: */
  52
  53/* cpu_dump_state() logging functions: */
  54#define log_cpu_state(env, f) cpu_dump_state((env), logfile, fprintf, (f));
  55#define log_cpu_state_mask(b, env, f) do {           \
  56      if (loglevel & (b)) log_cpu_state((env), (f)); \
  57  } while (0)
  58
  59/* disas() and target_disas() to logfile: */
  60#define log_target_disas(start, len, flags) \
  61        target_disas(logfile, (start), (len), (flags))
  62#define log_disas(start, len) \
  63        disas(logfile, (start), (len))
  64
  65/* page_dump() output to the log file: */
  66#define log_page_dump() page_dump(logfile)
  67
  68
  69
  70/* Maintenance: */
  71
  72/* fflush() the log file */
  73#define qemu_log_flush() fflush(logfile)
  74
  75/* Close the log file */
  76#define qemu_log_close() do { \
  77        fclose(logfile);      \
  78        logfile = NULL;       \
  79    } while (0)
  80
  81/* Set up a new log file */
  82#define qemu_log_set_file(f) do { \
  83        logfile = (f);            \
  84    } while (0)
  85
  86/* Set up a new log file, only if none is set */
  87#define qemu_log_try_set_file(f) do { \
  88        if (!logfile)                 \
  89            logfile = (f);            \
  90    } while (0)
  91
  92
  93#endif
  94