This repository has been archived by the owner on Jan 23, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2.7k
/
callcounter.h
110 lines (88 loc) · 3.13 KB
/
callcounter.h
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
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// ===========================================================================
// File: CallCounter.h
//
// ===========================================================================
#ifndef CALL_COUNTER_H
#define CALL_COUNTER_H
#ifdef FEATURE_TIERED_COMPILATION
// One entry in our dictionary mapping methods to the number of times they
// have been invoked
struct CallCounterEntry
{
CallCounterEntry() {}
CallCounterEntry(PTR_MethodDesc m, const int callCountLimit)
: pMethod(m), callCountLimit(callCountLimit) {}
PTR_MethodDesc pMethod;
int callCountLimit;
#ifndef DACCESS_COMPILE
static CallCounterEntry CreateWithCallCountingDisabled(MethodDesc *m);
#endif
bool IsCallCountingEnabled() const
{
LIMITED_METHOD_CONTRACT;
return callCountLimit != INT_MAX;
}
#ifndef DACCESS_COMPILE
void DisableCallCounting()
{
LIMITED_METHOD_CONTRACT;
callCountLimit = INT_MAX;
}
#endif
};
typedef DPTR(struct CallCounterEntry) PTR_CallCounterEntry;
class CallCounterHashTraits : public DefaultSHashTraits<CallCounterEntry>
{
public:
typedef typename DefaultSHashTraits<CallCounterEntry>::element_t element_t;
typedef typename DefaultSHashTraits<CallCounterEntry>::count_t count_t;
typedef PTR_MethodDesc key_t;
static key_t GetKey(element_t e)
{
LIMITED_METHOD_CONTRACT;
return e.pMethod;
}
static BOOL Equals(key_t k1, key_t k2)
{
LIMITED_METHOD_CONTRACT;
return k1 == k2;
}
static count_t Hash(key_t k)
{
LIMITED_METHOD_CONTRACT;
return (count_t)dac_cast<TADDR>(k);
}
static const element_t Null() { LIMITED_METHOD_CONTRACT; return element_t(PTR_NULL, 0); }
static const element_t Deleted() { LIMITED_METHOD_CONTRACT; return element_t((PTR_MethodDesc)-1, 0); }
static bool IsNull(const element_t &e) { LIMITED_METHOD_CONTRACT; return e.pMethod == PTR_NULL; }
static bool IsDeleted(const element_t &e) { return e.pMethod == (PTR_MethodDesc)-1; }
};
typedef SHash<NoRemoveSHashTraits<CallCounterHashTraits>> CallCounterHash;
// This is a per-appdomain cache of call counts for all code in that AppDomain.
// Each method invocation should trigger a call to OnMethodCalled (until it is disabled per-method)
// and the CallCounter will forward the call to the TieredCompilationManager including the
// current call count.
class CallCounter
{
public:
#ifdef DACCESS_COMPILE
CallCounter() {}
#else
CallCounter();
#endif
bool IsCallCountingEnabled(PTR_MethodDesc pMethodDesc);
#ifndef DACCESS_COMPILE
void DisableCallCounting(MethodDesc* pMethodDesc);
#endif
static bool OnMethodCodeVersionCalledSubsequently(NativeCodeVersion nativeCodeVersion, bool *doPublishRef);
bool IncrementCount(MethodDesc* pMethodDesc);
private:
// fields protected by lock
SpinLock m_lock;
CallCounterHash m_methodToCallCount;
};
#endif // FEATURE_TIERED_COMPILATION
#endif // CALL_COUNTER_H