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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/KBuffer.h>
#include <Kernel/KResult.h>
namespace Kernel {
class KBufferBuilder;
struct [[gnu::packed]] MallocPerformanceEvent {
size_t size;
FlatPtr ptr;
};
struct [[gnu::packed]] FreePerformanceEvent {
size_t size;
FlatPtr ptr;
};
struct [[gnu::packed]] MmapPerformanceEvent {
size_t size;
FlatPtr ptr;
char name[64];
};
struct [[gnu::packed]] MunmapPerformanceEvent {
size_t size;
FlatPtr ptr;
};
struct [[gnu::packed]] ProcessCreatePerformanceEvent {
pid_t parent_pid;
char executable[64];
};
struct [[gnu::packed]] ProcessExecPerformanceEvent {
char executable[64];
};
struct [[gnu::packed]] ThreadCreatePerformanceEvent {
pid_t parent_tid;
};
struct [[gnu::packed]] PerformanceEvent {
u8 type { 0 };
u8 stack_size { 0 };
u32 pid { 0 };
u32 tid { 0 };
u64 timestamp;
union {
MallocPerformanceEvent malloc;
FreePerformanceEvent free;
MmapPerformanceEvent mmap;
MunmapPerformanceEvent munmap;
ProcessCreatePerformanceEvent process_create;
ProcessExecPerformanceEvent process_exec;
ThreadCreatePerformanceEvent thread_create;
} data;
static constexpr size_t max_stack_frame_count = 64;
FlatPtr stack[max_stack_frame_count];
};
enum class ProcessEventType {
Create,
Exec
};
class PerformanceEventBuffer {
public:
static OwnPtr<PerformanceEventBuffer> try_create_with_size(size_t buffer_size);
KResult append(int type, FlatPtr arg1, FlatPtr arg2, const StringView& arg3, Thread* current_thread = Thread::current());
KResult append_with_eip_and_ebp(ProcessID pid, ThreadID tid, u32 eip, u32 ebp,
int type, FlatPtr arg1, FlatPtr arg2, const StringView& arg3);
void clear()
{
m_count = 0;
}
size_t capacity() const { return m_buffer->size() / sizeof(PerformanceEvent); }
size_t count() const { return m_count; }
const PerformanceEvent& at(size_t index) const
{
return const_cast<PerformanceEventBuffer&>(*this).at(index);
}
bool to_json(KBufferBuilder&) const;
void add_process(const Process&, ProcessEventType event_type);
private:
explicit PerformanceEventBuffer(NonnullOwnPtr<KBuffer>);
template<typename Serializer>
bool to_json_impl(Serializer&) const;
PerformanceEvent& at(size_t index);
size_t m_count { 0 };
NonnullOwnPtr<KBuffer> m_buffer;
};
extern bool g_profiling_all_threads;
extern PerformanceEventBuffer* g_global_perf_events;
}
|
