1 #ifndef __TRACE_AGENT_H__ 2 #define __TRACE_AGENT_H__ 3 #include <pthread.h> 4 #include <stdbool.h> 5 6 #define MAX_CPUS 256 7 #define PIPE_INIT (1024*1024) 8 9 /* 10 * agent_info - structure managing total information of guest agent 11 * @pipe_size: size of pipe (default 1MB) 12 * @use_stdout: set to true when o option is added (default false) 13 * @cpus: total number of CPUs 14 * @ctl_fd: fd of control path, /dev/virtio-ports/agent-ctl-path 15 * @rw_ti: structure managing information of read/write threads 16 */ 17 struct agent_info { 18 unsigned long pipe_size; 19 bool use_stdout; 20 int cpus; 21 int ctl_fd; 22 struct rw_thread_info *rw_ti[MAX_CPUS]; 23 }; 24 25 /* 26 * rw_thread_info - structure managing a read/write thread a cpu 27 * @cpu_num: cpu number operating this read/write thread 28 * @in_fd: fd of reading trace data path in cpu_num 29 * @out_fd: fd of writing trace data path in cpu_num 30 * @read_pipe: fd of read pipe 31 * @write_pipe: fd of write pipe 32 * @pipe_size: size of pipe (default 1MB) 33 */ 34 struct rw_thread_info { 35 int cpu_num; 36 int in_fd; 37 int out_fd; 38 int read_pipe; 39 int write_pipe; 40 unsigned long pipe_size; 41 }; 42 43 /* use for stopping rw threads */ 44 extern bool global_sig_receive; 45 46 /* use for notification */ 47 extern bool global_run_operation; 48 extern pthread_mutex_t mutex_notify; 49 extern pthread_cond_t cond_wakeup; 50 51 /* for controller of read/write threads */ 52 extern int rw_ctl_init(const char *ctl_path); 53 extern void *rw_ctl_loop(int ctl_fd); 54 55 /* for trace read/write thread */ 56 extern void *rw_thread_info_new(void); 57 extern void *rw_thread_init(int cpu, const char *in_path, const char *out_path, 58 bool stdout_flag, unsigned long pipe_size, 59 struct rw_thread_info *rw_ti); 60 extern pthread_t rw_thread_run(struct rw_thread_info *rw_ti); 61 62 static inline void *zalloc(size_t size) 63 { 64 return calloc(1, size); 65 } 66 67 #define pr_err(format, ...) fprintf(stderr, format, ## __VA_ARGS__) 68 #define pr_info(format, ...) fprintf(stdout, format, ## __VA_ARGS__) 69 #ifdef DEBUG 70 #define pr_debug(format, ...) fprintf(stderr, format, ## __VA_ARGS__) 71 #else 72 #define pr_debug(format, ...) do {} while (0) 73 #endif 74 75 #endif /*__TRACE_AGENT_H__*/ 76