CoreMedia.cpp
3.03 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
//===-- CoreMedia.cpp -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "CoreMedia.h"
#include "lldb/Utility/Flags.h"
#include "lldb/Utility/Log.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Target/Target.h"
#include <inttypes.h>
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
bool lldb_private::formatters::CMTimeSummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
CompilerType type = valobj.GetCompilerType();
if (!type.IsValid())
return false;
auto type_system_or_err =
valobj.GetExecutionContextRef()
.GetTargetSP()
->GetScratchTypeSystemForLanguage(lldb::eLanguageTypeC);
if (auto err = type_system_or_err.takeError()) {
LLDB_LOG_ERROR(
lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DATAFORMATTERS),
std::move(err), "Failed to get scratch type system");
return false;
}
// fetch children by offset to compensate for potential lack of debug info
auto int64_ty = type_system_or_err->GetBuiltinTypeForEncodingAndBitSize(
eEncodingSint, 64);
auto int32_ty = type_system_or_err->GetBuiltinTypeForEncodingAndBitSize(
eEncodingSint, 32);
auto value_sp(valobj.GetSyntheticChildAtOffset(0, int64_ty, true));
auto timescale_sp(valobj.GetSyntheticChildAtOffset(8, int32_ty, true));
auto flags_sp(valobj.GetSyntheticChildAtOffset(12, int32_ty, true));
if (!value_sp || !timescale_sp || !flags_sp)
return false;
auto value = value_sp->GetValueAsUnsigned(0);
auto timescale = (int32_t)timescale_sp->GetValueAsUnsigned(
0); // the timescale specifies the fraction of a second each unit in the
// numerator occupies
auto flags = Flags(flags_sp->GetValueAsUnsigned(0) &
0x00000000000000FF); // the flags I need sit in the LSB
const unsigned int FlagPositiveInf = 4;
const unsigned int FlagNegativeInf = 8;
const unsigned int FlagIndefinite = 16;
if (flags.AnySet(FlagIndefinite)) {
stream.Printf("indefinite");
return true;
}
if (flags.AnySet(FlagPositiveInf)) {
stream.Printf("+oo");
return true;
}
if (flags.AnySet(FlagNegativeInf)) {
stream.Printf("-oo");
return true;
}
if (timescale == 0)
return false;
switch (timescale) {
case 0:
return false;
case 1:
stream.Printf("%" PRId64 " seconds", value);
return true;
case 2:
stream.Printf("%" PRId64 " half seconds", value);
return true;
case 3:
stream.Printf("%" PRId64 " third%sof a second", value,
value == 1 ? " " : "s ");
return true;
default:
stream.Printf("%" PRId64 " %" PRId32 "th%sof a second", value, timescale,
value == 1 ? " " : "s ");
return true;
}
}