include/qemu/log.h

   1 #ifndef QEMU_LOG_H
   2 #define QEMU_LOG_H
   3
   4 #include <stdarg.h>
   5 #include <stdbool.h>
   6 #include <stdio.h>
   7 #include "qemu/compiler.h"
   8
   9 /* Private global variables, don't use */
  10 extern FILE *qemu_logfile;
  11 extern int qemu_loglevel;
  12
  13 /*
  14  * The new API:
  15  *
  16  */
  17
  18 /* Log settings checking macros: */
  19
  20 /* Returns true if qemu_log() will really write somewhere
  21  */
  22 static inline bool qemu_log_enabled(void)
  23 {
  24     return qemu_logfile != NULL;
  25 }
  26
  27 /* Returns true if qemu_log() will write somewhere else than stderr
  28  */
  29 static inline bool qemu_log_separate(void)
  30 {
  31     return qemu_logfile != NULL && qemu_logfile != stderr;
  32 }
  33
  34 #define CPU_LOG_TB_OUT_ASM (1 << 0)
  35 #define CPU_LOG_TB_IN_ASM  (1 << 1)
  36 #define CPU_LOG_TB_OP      (1 << 2)
  37 #define CPU_LOG_TB_OP_OPT  (1 << 3)
  38 #define CPU_LOG_INT        (1 << 4)
  39 #define CPU_LOG_EXEC       (1 << 5)
  40 #define CPU_LOG_PCALL      (1 << 6)
  41 #define CPU_LOG_TB_CPU     (1 << 8)
  42 #define CPU_LOG_RESET      (1 << 9)
  43 #define LOG_UNIMP          (1 << 10)
  44 #define LOG_GUEST_ERROR    (1 << 11)
  45 #define CPU_LOG_MMU        (1 << 12)
  46 #define CPU_LOG_TB_NOCHAIN (1 << 13)
  47 #define CPU_LOG_PAGE       (1 << 14)
  48 #define LOG_TRACE          (1 << 15)
  49
  50 /* Returns true if a bit is set in the current loglevel mask
  51  */
  52 static inline bool qemu_loglevel_mask(int mask)
  53 {
  54     return (qemu_loglevel & mask) != 0;
  55 }
  56
  57 /* Logging functions: */
  58
  59 /* main logging function
  60  */
  61 void GCC_FMT_ATTR(1, 2) qemu_log(const char *fmt, ...);
  62
  63 /* vfprintf-like logging function
  64  */
  65 static inline void GCC_FMT_ATTR(1, 0)
  66 qemu_log_vprintf(const char *fmt, va_list va)
  67 {
  68     if (qemu_logfile) {
  69         vfprintf(qemu_logfile, fmt, va);
  70     }
  71 }
  72
  73 /* log only if a bit is set on the current loglevel mask
  74  */
  75 void GCC_FMT_ATTR(2, 3) qemu_log_mask(int mask, const char *fmt, ...);
  76
  77
  78 /* Maintenance: */
  79
  80 /* fflush() the log file */
  81 static inline void qemu_log_flush(void)
  82 {
  83     fflush(qemu_logfile);
  84 }
  85
  86 /* Close the log file */
  87 static inline void qemu_log_close(void)
  88 {
  89     if (qemu_logfile) {
  90         if (qemu_logfile != stderr) {
  91             fclose(qemu_logfile);
  92         }
  93         qemu_logfile = NULL;
  94     }
  95 }
  96
  97 /* Set up a new log file */
  98 static inline void qemu_log_set_file(FILE *f)
  99 {
 100     qemu_logfile = f;
 101 }
 102
 103 /* define log items */
 104 typedef struct QEMULogItem {
 105     int mask;
 106     const char *name;
 107     const char *help;
 108 } QEMULogItem;
 109
 110 extern const QEMULogItem qemu_log_items[];
 111
 112 /* This is the function that actually does the work of
 113  * changing the log level; it should only be accessed via
 114  * the qemu_set_log() wrapper.
 115  */
 116 void do_qemu_set_log(int log_flags, bool use_own_buffers);
 117
 118 static inline void qemu_set_log(int log_flags)
 119 {
 120 #ifdef CONFIG_USER_ONLY
 121     do_qemu_set_log(log_flags, true);
 122 #else
 123     do_qemu_set_log(log_flags, false);
 124 #endif
 125 }
 126
 127 void qemu_set_log_filename(const char *filename);
 128 int qemu_str_to_log_mask(const char *str);
 129
 130 /* Print a usage message listing all the valid logging categories
 131  * to the specified FILE*.
 132  */
 133 void qemu_print_log_usage(FILE *f);
 134
 135 #endif