-
Notifications
You must be signed in to change notification settings - Fork 2.2k
Expand file tree
/
Copy pathCorpseSnapshot.h
More file actions
101 lines (83 loc) · 3.75 KB
/
Copy pathCorpseSnapshot.h
File metadata and controls
101 lines (83 loc) · 3.75 KB
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
/*
* Copyright (C) 2026 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if (OS(MACOS) || USE(APPLE_INTERNAL_SDK)) && !PLATFORM(MACCATALYST) && !PLATFORM(IOS_FAMILY_SIMULATOR)
#include <JavaScriptCore/CorpseAddress.h>
#include <JavaScriptCore/CorpseProcess.h>
#include <JavaScriptCore/CorpseSymbol.h>
#include <JavaScriptCore/CorpseThread.h>
#include <mach/mach.h>
#include <memory>
#include <optional>
#include <utility>
#include <wtf/DoublyLinkedList.h>
#include <wtf/HashMap.h>
#include <wtf/RefPtr.h>
#include <wtf/StdLibExtras.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/StringView.h>
#include <wtf/text/WTFString.h>
namespace JSC {
namespace Corpse {
// Owns a corpse (a read-only Mach snapshot of a process)
// Check isValid() to see whether acquisition succeeded.
//
// Snapshots are linked into a DoublyLinkedList by their owner. The list is
// intrusive and does not own its nodes: whoever appends a Snapshot must remove
// it from the list before destroying it.
class Snapshot : public DoublyLinkedListNode<Snapshot> {
WTF_MAKE_TZONE_ALLOCATED(Snapshot);
public:
explicit Snapshot(RefPtr<Process>);
~Snapshot();
Snapshot(const Snapshot&) = delete;
Snapshot& operator=(const Snapshot&) = delete;
Snapshot(Snapshot&& other) = delete;
bool isValid() const { return MACH_PORT_VALID(m_corpsePort); }
// A monotonically increasing identifier assigned at construction. IDs are
// never reused, so they stay stable as snapshots are added and removed.
unsigned id() const { return m_id; }
Process* process() const { return m_process.get(); }
mach_port_t corpsePort() const { return m_corpsePort; }
// The threads captured in this corpse, read and cached on the first call.
const Vector<Thread>& threads();
// The address of `name` in this corpse, null if it is not there.
Address symbol(const char* name);
private:
static unsigned s_nextId;
RefPtr<Process> m_process;
mach_port_t m_corpsePort { MACH_PORT_NULL };
unsigned m_id;
std::optional<Vector<Thread>> m_threads;
HashMap<String, std::unique_ptr<Symbol>> m_symbols;
Snapshot* m_prev { nullptr }; // Required by DoublyLinkedListNode.
Snapshot* m_next { nullptr }; // Required by DoublyLinkedListNode.
friend class WTF::DoublyLinkedListNode<Snapshot>;
};
} // namespace Corpse
} // namespace JSC
#endif // (OS(MACOS) || USE(APPLE_INTERNAL_SDK)) && !PLATFORM(MACCATALYST) && !PLATFORM(IOS_FAMILY_SIMULATOR)