1 // System.Runtime.CompilerServices.RuntimeHelpers
3 // Sean MacIsaac (macisaac@ximian.com)
4 // Paolo Molaro (lupus@ximian.com)
6 // (C) Ximian, Inc. 2001
9 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System
.Runtime
.ConstrainedExecution
;
32 using System
.Reflection
;
34 namespace System
.Runtime
.CompilerServices
36 public static class RuntimeHelpers
38 public delegate void TryCode (Object userData
);
40 public delegate void CleanupCode (Object userData
, bool exceptionThrown
);
42 [MethodImplAttribute(MethodImplOptions
.InternalCall
)]
43 static extern void InitializeArray (Array array
, IntPtr fldHandle
);
45 public static void InitializeArray (Array array
, RuntimeFieldHandle fldHandle
)
47 if ((array
== null) || (fldHandle
.Value
== IntPtr
.Zero
))
48 throw new ArgumentNullException ();
50 InitializeArray (array
, fldHandle
.Value
);
53 public static extern int OffsetToStringData
{
54 [MethodImpl (MethodImplOptions
.InternalCall
)]
58 public static int GetHashCode (object o
) {
59 return Object
.InternalGetHashCode (o
);
62 public static new bool Equals (object o1
, object o2
) {
63 // LAMESPEC: According to MSDN, this is equivalent to
64 // Object::Equals (). But the MS version of Object::Equals()
65 // includes the functionality of ValueType::Equals(), while
66 // our version does not.
69 if ((o1
== null) || (o2
== null))
72 return ValueType
.DefaultEquals (o1
, o2
);
74 return Object
.Equals (o1
, o2
);
77 [MethodImplAttribute(MethodImplOptions
.InternalCall
)]
78 public static extern object GetObjectValue (object obj
);
80 [MethodImplAttribute(MethodImplOptions
.InternalCall
)]
81 static extern void RunClassConstructor (IntPtr type
);
83 public static void RunClassConstructor (RuntimeTypeHandle type
)
85 if (type
.Value
== IntPtr
.Zero
)
86 throw new ArgumentException ("Handle is not initialized.", "type");
88 RunClassConstructor (type
.Value
);
92 [MethodImplAttribute (MethodImplOptions
.InternalCall
)]
93 static extern bool SufficientExecutionStack ();
95 [ReliabilityContract (Consistency
.WillNotCorruptState
, Cer
.MayFail
)]
96 public static void EnsureSufficientExecutionStack ()
98 if (SufficientExecutionStack ())
100 throw new InsufficientExecutionStackException ();
104 [MonoTODO("Currently a no-op")]
105 public static void ExecuteCodeWithGuaranteedCleanup (TryCode code
, CleanupCode backoutCode
, Object userData
)
109 [MonoTODO("Currently a no-op")]
110 [ReliabilityContract (Consistency
.WillNotCorruptState
, Cer
.MayFail
)]
111 public static void PrepareConstrainedRegions ()
115 [MonoTODO("Currently a no-op")]
116 [ReliabilityContract (Consistency
.WillNotCorruptState
, Cer
.MayFail
)]
117 public static void PrepareConstrainedRegionsNoOP ()
121 [MonoTODO("Currently a no-op")]
122 [ReliabilityContract (Consistency
.WillNotCorruptState
, Cer
.MayFail
)]
123 public static void ProbeForSufficientStack()
127 [MonoTODO("Currently a no-op")]
128 public static void PrepareDelegate (Delegate d
)
131 throw new ArgumentNullException ("d");
134 [MonoTODO("Currently a no-op")]
135 public static void PrepareMethod (RuntimeMethodHandle method
)
139 [MonoTODO("Currently a no-op")]
140 public static void PrepareMethod (RuntimeMethodHandle method
, RuntimeTypeHandle
[] instantiation
)
144 public static void RunModuleConstructor (ModuleHandle module
)
146 if (module
== ModuleHandle
.EmptyHandle
)
147 throw new ArgumentException ("Handle is not initialized.", "module");
149 RunModuleConstructor (module
.Value
);
152 [MethodImplAttribute (MethodImplOptions
.InternalCall
)]
153 public static extern void RunModuleConstructor (IntPtr module
);