xref: /illumos-kvm-cmd/qemu-log.h (revision 68396ea9)
1 #ifndef QEMU_LOG_H
2 #define QEMU_LOG_H
3 
4 /* The deprecated global variables: */
5 extern FILE *logfile;
6 extern 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