mirror of https://gitee.com/openkylin/linux.git
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
#ifndef __TRACE_AGENT_H__
|
|
#define __TRACE_AGENT_H__
|
|
#include <pthread.h>
|
|
#include <stdbool.h>
|
|
|
|
#define MAX_CPUS 256
|
|
#define PIPE_INIT (1024*1024)
|
|
|
|
/*
|
|
* agent_info - structure managing total information of guest agent
|
|
* @pipe_size: size of pipe (default 1MB)
|
|
* @use_stdout: set to true when o option is added (default false)
|
|
* @cpus: total number of CPUs
|
|
* @ctl_fd: fd of control path, /dev/virtio-ports/agent-ctl-path
|
|
* @rw_ti: structure managing information of read/write threads
|
|
*/
|
|
struct agent_info {
|
|
unsigned long pipe_size;
|
|
bool use_stdout;
|
|
int cpus;
|
|
int ctl_fd;
|
|
struct rw_thread_info *rw_ti[MAX_CPUS];
|
|
};
|
|
|
|
/*
|
|
* rw_thread_info - structure managing a read/write thread a cpu
|
|
* @cpu_num: cpu number operating this read/write thread
|
|
* @in_fd: fd of reading trace data path in cpu_num
|
|
* @out_fd: fd of writing trace data path in cpu_num
|
|
* @read_pipe: fd of read pipe
|
|
* @write_pipe: fd of write pipe
|
|
* @pipe_size: size of pipe (default 1MB)
|
|
*/
|
|
struct rw_thread_info {
|
|
int cpu_num;
|
|
int in_fd;
|
|
int out_fd;
|
|
int read_pipe;
|
|
int write_pipe;
|
|
unsigned long pipe_size;
|
|
};
|
|
|
|
/* use for stopping rw threads */
|
|
extern bool global_sig_receive;
|
|
|
|
/* use for notification */
|
|
extern bool global_run_operation;
|
|
extern pthread_mutex_t mutex_notify;
|
|
extern pthread_cond_t cond_wakeup;
|
|
|
|
/* for controller of read/write threads */
|
|
extern int rw_ctl_init(const char *ctl_path);
|
|
extern void *rw_ctl_loop(int ctl_fd);
|
|
|
|
/* for trace read/write thread */
|
|
extern void *rw_thread_info_new(void);
|
|
extern void *rw_thread_init(int cpu, const char *in_path, const char *out_path,
|
|
bool stdout_flag, unsigned long pipe_size,
|
|
struct rw_thread_info *rw_ti);
|
|
extern pthread_t rw_thread_run(struct rw_thread_info *rw_ti);
|
|
|
|
static inline void *zalloc(size_t size)
|
|
{
|
|
return calloc(1, size);
|
|
}
|
|
|
|
#define pr_err(format, ...) fprintf(stderr, format, ## __VA_ARGS__)
|
|
#define pr_info(format, ...) fprintf(stdout, format, ## __VA_ARGS__)
|
|
#ifdef DEBUG
|
|
#define pr_debug(format, ...) fprintf(stderr, format, ## __VA_ARGS__)
|
|
#else
|
|
#define pr_debug(format, ...) do {} while (0)
|
|
#endif
|
|
|
|
#endif /*__TRACE_AGENT_H__*/
|