#ifndef __TRACE_AGENT_H__ #define __TRACE_AGENT_H__ #include #include #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__*/ /td>
path: root/include/xen/interface/io/ring.h
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