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#ifndef QEMU_LOG_H
#define QEMU_LOG_H
/* A small part of this API is split into its own header */
#include "qemu/log-for-trace.h"
#include "qemu/rcu.h"
typedef struct QemuLogFile {
struct rcu_head rcu;
FILE *fd;
} QemuLogFile;
/* Private global variable, don't use */
extern QemuLogFile *qemu_logfile;
/*
* The new API:
*
*/
/* Log settings checking macros: */
/* Returns true if qemu_log() will really write somewhere
*/
static inline bool qemu_log_enabled(void)
{
return qemu_logfile != NULL;
}
/* Returns true if qemu_log() will write somewhere else than stderr
*/
static inline bool qemu_log_separate(void)
{
QemuLogFile *logfile;
bool res = false;
rcu_read_lock();
logfile = qatomic_rcu_read(&qemu_logfile);
if (logfile && logfile->fd != stderr) {
res = true;
}
rcu_read_unlock();
return res;
}
#define CPU_LOG_TB_OUT_ASM (1 << 0)
#define CPU_LOG_TB_IN_ASM (1 << 1)
#define CPU_LOG_TB_OP (1 << 2)
#define CPU_LOG_TB_OP_OPT (1 << 3)
#define CPU_LOG_INT (1 << 4)
#define CPU_LOG_EXEC (1 << 5)
#define CPU_LOG_PCALL (1 << 6)
#define CPU_LOG_TB_CPU (1 << 8)
#define CPU_LOG_RESET (1 << 9)
#define LOG_UNIMP (1 << 10)
#define LOG_GUEST_ERROR (1 << 11)
#define CPU_LOG_MMU (1 << 12)
#define CPU_LOG_TB_NOCHAIN (1 << 13)
#define CPU_LOG_PAGE (1 << 14)
/* LOG_TRACE (1 << 15) is defined in log-for-trace.h */
#define CPU_LOG_TB_OP_IND (1 << 16)
#define CPU_LOG_TB_FPU (1 << 17)
#define CPU_LOG_PLUGIN (1 << 18)
/* LOG_STRACE is used for user-mode strace logging. */
#define LOG_STRACE (1 << 19)
/* Lock output for a series of related logs. Since this is not needed
* for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we
* assume that qemu_loglevel_mask has already been tested, and that
* qemu_loglevel is never set when qemu_logfile is unset.
*/
static inline FILE *qemu_log_lock(void)
{
QemuLogFile *logfile;
rcu_read_lock();
logfile = qatomic_rcu_read(&qemu_logfile);
if (logfile) {
qemu_flockfile(logfile->fd);
return logfile->fd;
} else {
return NULL;
}
}
static inline void qemu_log_unlock(FILE *fd)
{
if (fd) {
qemu_funlockfile(fd);
}
rcu_read_unlock();
}
/* Logging functions: */
/* vfprintf-like logging function
*/
static inline void GCC_FMT_ATTR(1, 0)
qemu_log_vprintf(const char *fmt, va_list va)
{
QemuLogFile *logfile;
rcu_read_lock();
logfile = qatomic_rcu_read(&qemu_logfile);
if (logfile) {
vfprintf(logfile->fd, fmt, va);
}
rcu_read_unlock();
}
/* log only if a bit is set on the current loglevel mask:
* @mask: bit to check in the mask
* @fmt: printf-style format string
* @args: optional arguments for format string
*/
#define qemu_log_mask(MASK, FMT, ...) \
do { \
if (unlikely(qemu_loglevel_mask(MASK))) { \
qemu_log(FMT, ## __VA_ARGS__); \
} \
} while (0)
/* log only if a bit is set on the current loglevel mask
* and we are in the address range we care about:
* @mask: bit to check in the mask
* @addr: address to check in dfilter
* @fmt: printf-style format string
* @args: optional arguments for format string
*/
#define qemu_log_mask_and_addr(MASK, ADDR, FMT, ...) \
do { \
if (unlikely(qemu_loglevel_mask(MASK)) && \
qemu_log_in_addr_range(ADDR)) { \
qemu_log(FMT, ## __VA_ARGS__); \
} \
} while (0)
/* Maintenance: */
/* define log items */
typedef struct QEMULogItem {
int mask;
const char *name;
const char *help;
} QEMULogItem;
extern const QEMULogItem qemu_log_items[];
void qemu_set_log(int log_flags);
void qemu_log_needs_buffers(void);
void qemu_set_log_filename(const char *filename, Error **errp);
void qemu_set_dfilter_ranges(const char *ranges, Error **errp);
bool qemu_log_in_addr_range(uint64_t addr);
int qemu_str_to_log_mask(const char *str);
/* Print a usage message listing all the valid logging categories
* to the specified FILE*.
*/
void qemu_print_log_usage(FILE *f);
/* fflush() the log file */
void qemu_log_flush(void);
/* Close the log file */
void qemu_log_close(void);
#endif
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