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76 lines
2.1 KiB
76 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __TRACE_AGENT_H__ |
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#define __TRACE_AGENT_H__ |
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#include <pthread.h> |
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#include <stdbool.h> |
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#define MAX_CPUS 256 |
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#define PIPE_INIT (1024*1024) |
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/* |
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* agent_info - structure managing total information of guest agent |
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* @pipe_size: size of pipe (default 1MB) |
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* @use_stdout: set to true when o option is added (default false) |
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* @cpus: total number of CPUs |
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* @ctl_fd: fd of control path, /dev/virtio-ports/agent-ctl-path |
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* @rw_ti: structure managing information of read/write threads |
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*/ |
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struct agent_info { |
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unsigned long pipe_size; |
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bool use_stdout; |
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int cpus; |
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int ctl_fd; |
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struct rw_thread_info *rw_ti[MAX_CPUS]; |
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}; |
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/* |
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* rw_thread_info - structure managing a read/write thread a cpu |
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* @cpu_num: cpu number operating this read/write thread |
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* @in_fd: fd of reading trace data path in cpu_num |
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* @out_fd: fd of writing trace data path in cpu_num |
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* @read_pipe: fd of read pipe |
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* @write_pipe: fd of write pipe |
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* @pipe_size: size of pipe (default 1MB) |
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*/ |
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struct rw_thread_info { |
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int cpu_num; |
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int in_fd; |
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int out_fd; |
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int read_pipe; |
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int write_pipe; |
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unsigned long pipe_size; |
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}; |
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/* use for stopping rw threads */ |
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extern bool global_sig_receive; |
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/* use for notification */ |
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extern bool global_run_operation; |
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extern pthread_mutex_t mutex_notify; |
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extern pthread_cond_t cond_wakeup; |
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/* for controller of read/write threads */ |
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extern int rw_ctl_init(const char *ctl_path); |
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extern void *rw_ctl_loop(int ctl_fd); |
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/* for trace read/write thread */ |
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extern void *rw_thread_info_new(void); |
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extern void *rw_thread_init(int cpu, const char *in_path, const char *out_path, |
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bool stdout_flag, unsigned long pipe_size, |
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struct rw_thread_info *rw_ti); |
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extern pthread_t rw_thread_run(struct rw_thread_info *rw_ti); |
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static inline void *zalloc(size_t size) |
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{ |
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return calloc(1, size); |
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} |
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#define pr_err(format, ...) fprintf(stderr, format, ## __VA_ARGS__) |
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#define pr_info(format, ...) fprintf(stdout, format, ## __VA_ARGS__) |
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#ifdef DEBUG |
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#define pr_debug(format, ...) fprintf(stderr, format, ## __VA_ARGS__) |
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#else |
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#define pr_debug(format, ...) do {} while (0) |
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#endif |
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#endif /*__TRACE_AGENT_H__*/
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