blob: fd7984275969baee24527c8bd789bc8019c7c043 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
#ifndef SRC_TRACING_AGENT_H_
#define SRC_TRACING_AGENT_H_
#include "libplatform/v8-tracing.h"
#include "uv.h"
#include "v8.h"
#include <set>
#include <string>
#include <unordered_map>
namespace node {
namespace tracing {
using v8::platform::tracing::TraceConfig;
using v8::platform::tracing::TraceObject;
class AsyncTraceWriter {
public:
virtual ~AsyncTraceWriter() {}
virtual void AppendTraceEvent(TraceObject* trace_event) = 0;
virtual void Flush(bool blocking) = 0;
};
class TracingController : public v8::platform::tracing::TracingController {
public:
TracingController() : v8::platform::tracing::TracingController() {}
int64_t CurrentTimestampMicroseconds() override {
return uv_hrtime() / 1000;
}
};
class Agent {
public:
// Resetting the pointer disconnects client
using ClientHandle = std::unique_ptr<std::pair<Agent*, int>,
void (*)(std::pair<Agent*, int>*)>;
static ClientHandle EmptyClientHandle() {
return ClientHandle(nullptr, DisconnectClient);
}
explicit Agent(const std::string& log_file_pattern);
void Stop();
TracingController* GetTracingController() { return tracing_controller_; }
// Destroying the handle disconnects the client
ClientHandle AddClient(const std::set<std::string>& categories,
std::unique_ptr<AsyncTraceWriter> writer);
// These 3 methods operate on a "default" client, e.g. the file writer
void Enable(const std::string& categories);
void Enable(const std::set<std::string>& categories);
void Disable(const std::set<std::string>& categories);
std::string GetEnabledCategories();
void AppendTraceEvent(TraceObject* trace_event);
void Flush(bool blocking);
TraceConfig* CreateTraceConfig();
private:
static void ThreadCb(void* arg);
static void DisconnectClient(std::pair<Agent*, int>* id_agent) {
id_agent->first->Disconnect(id_agent->second);
delete id_agent;
}
void Start();
void StopTracing();
void Disconnect(int client);
const std::string& log_file_pattern_;
uv_thread_t thread_;
uv_loop_t tracing_loop_;
bool started_ = false;
std::unordered_map<int, std::set<std::string>> categories_;
TracingController* tracing_controller_ = nullptr;
ClientHandle file_writer_;
int next_writer_id_ = 1;
std::unordered_map<int, std::unique_ptr<AsyncTraceWriter>> writers_;
std::multiset<std::string> file_writer_categories_;
};
} // namespace tracing
} // namespace node
#endif // SRC_TRACING_AGENT_H_
|
