12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576 |
- /* SPDX-License-Identifier: GPL-2.0 */
- #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__*/
|