summaryrefslogtreecommitdiffstats
path: root/tools/virtio/virtio-trace/trace-agent.h
diff options
context:
space:
mode:
Diffstat (limited to 'tools/virtio/virtio-trace/trace-agent.h')
-rw-r--r--tools/virtio/virtio-trace/trace-agent.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/tools/virtio/virtio-trace/trace-agent.h b/tools/virtio/virtio-trace/trace-agent.h
new file mode 100644
index 000000000..e67885969
--- /dev/null
+++ b/tools/virtio/virtio-trace/trace-agent.h
@@ -0,0 +1,76 @@
+/* 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__*/