public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if (name != null)
{
#if PLATFORM_UNIX
throw new PlatformNotSupportedException(Environment.GetResourceString("PlatformNotSupported_NamedSynchronizationPrimitives"));
#else
if (System.IO.Path.MaxPath < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", name));
}
#endif
}
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.Memcpy(pSecDescriptor, 0, sd, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
CreateMutexWithGuaranteedCleanup(initiallyOwned, name, out createdNew, secAttrs);
}
public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if (name == string.Empty)
{
// Empty name is treated as an unnamed mutex. Set to null, and we will check for null from now on.
name = null;
}
#if !PLATFORM_UNIX
if (name != null && System.IO.Path.MaxPath < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", Path.MaxPath), "name");
}
#endif
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.Memcpy(pSecDescriptor, 0, sd, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
CreateMutexWithGuaranteedCleanup(initiallyOwned, name, out createdNew, secAttrs);
}
public unsafe Mutex(bool initiallyOwned, string name, out bool createdNew, MutexSecurity mutexSecurity)
{
if ((name != null) && (260 < name.Length))
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", new object[] { name }));
}
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
if (mutexSecurity != null)
{
secAttrs = new Win32Native.SECURITY_ATTRIBUTES {
nLength = Marshal.SizeOf(secAttrs)
};
byte[] securityDescriptorBinaryForm = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pDest = stackalloc byte[1 * securityDescriptorBinaryForm.Length];
Buffer.memcpy(securityDescriptorBinaryForm, 0, pDest, 0, securityDescriptorBinaryForm.Length);
secAttrs.pSecurityDescriptor = pDest;
}
SafeWaitHandle mutexHandle = null;
bool newMutex = false;
RuntimeHelpers.CleanupCode backoutCode = new RuntimeHelpers.CleanupCode(this.MutexCleanupCode);
MutexCleanupInfo cleanupInfo = new MutexCleanupInfo(mutexHandle, false);
RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(delegate (object userData) {
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
if (initiallyOwned)
{
cleanupInfo.inCriticalRegion = true;
Thread.BeginThreadAffinity();
Thread.BeginCriticalRegion();
}
}
int errorCode = 0;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
errorCode = CreateMutexHandle(initiallyOwned, name, secAttrs, out mutexHandle);
}
if (mutexHandle.IsInvalid)
{
mutexHandle.SetHandleAsInvalid();
if (((name != null) && (name.Length != 0)) && (6 == errorCode))
{
throw new WaitHandleCannotBeOpenedException(Environment.GetResourceString("Threading.WaitHandleCannotBeOpenedException_InvalidHandle", new object[] { name }));
}
__Error.WinIOError(errorCode, name);
}
newMutex = errorCode != 0xb7;
this.SetHandleInternal(mutexHandle);
this.hasThreadAffinity = true;
}, backoutCode, cleanupInfo);
createdNew = newMutex;
}
public unsafe Mutex(bool initiallyOwned, string name, out bool createdNew, MutexSecurity mutexSecurity)
{
if ((name != null) && (260 < name.Length))
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong", new object[] { name }));
}
Win32Native.SECURITY_ATTRIBUTES structure = null;
if (mutexSecurity != null)
{
structure = new Win32Native.SECURITY_ATTRIBUTES {
nLength = Marshal.SizeOf(structure)
};
byte[] securityDescriptorBinaryForm = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pDest = stackalloc byte[(IntPtr) securityDescriptorBinaryForm.Length];
Buffer.memcpy(securityDescriptorBinaryForm, 0, pDest, 0, securityDescriptorBinaryForm.Length);
structure.pSecurityDescriptor = pDest;
}
RuntimeHelpers.CleanupCode backoutCode = new RuntimeHelpers.CleanupCode(this.MutexCleanupCode);
MutexCleanupInfo cleanupInfo = new MutexCleanupInfo(null, false);
MutexTryCodeHelper helper = new MutexTryCodeHelper(initiallyOwned, cleanupInfo, name, structure, this);
RuntimeHelpers.TryCode code = new RuntimeHelpers.TryCode(helper.MutexTryCode);
RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(code, backoutCode, cleanupInfo);
createdNew = helper.m_newMutex;
}
internal static unsafe void AcquireReservedMutex(ref bool bHandleObtained)
{
#if FEATURE_MACL
SafeWaitHandle mutexHandle = null;
int errorCode;
bHandleObtained = false;
if (!Environment.IsW2k3) {
return;
}
if (s_ReservedMutex == null) {
// Create a maximally-permissive security descriptor, to ensure we never get an
// ACCESS_DENIED error when calling CreateMutex
MutexSecurity sec = new MutexSecurity();
SecurityIdentifier everyoneSid = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
sec.AddAccessRule(new MutexAccessRule(everyoneSid, MutexRights.FullControl, AccessControlType.Allow));
// For ACL's, get the security descriptor from the MutexSecurity.
Win32Native.SECURITY_ATTRIBUTES secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = sec.GetSecurityDescriptorBinaryForm();
byte * bytesOnStack = stackalloc byte[sd.Length];
Buffer.Memcpy(bytesOnStack, 0, sd, 0, sd.Length);
secAttrs.pSecurityDescriptor = bytesOnStack;
RuntimeHelpers.PrepareConstrainedRegions();
try {}
finally {
mutexHandle = Win32Native.CreateMutex(secAttrs, false, c_ReservedMutexName);
// need to set specially, since this mutex cannot lock on itself while closing itself.
mutexHandle.SetAsReservedMutex();
}
errorCode = Marshal.GetLastWin32Error();
if (mutexHandle.IsInvalid) {
mutexHandle.SetHandleAsInvalid();
__Error.WinIOError(errorCode, c_ReservedMutexName);
}
Mutex m = new Mutex(mutexHandle);
Interlocked.CompareExchange(ref s_ReservedMutex, m, null);
}
RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally {
try {
s_ReservedMutex.WaitOne();
bHandleObtained = true;
}
catch (AbandonedMutexException)
{
// we don't care if another process holding the Mutex was killed
bHandleObtained = true;
}
}
#else
bHandleObtained = true;
#endif
}
public unsafe Mutex(bool initiallyOwned, String name, out bool createdNew, MutexSecurity mutexSecurity)
{
if(null != name && System.IO.Path.MAX_PATH < name.Length)
{
throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong",name));
}
Contract.EndContractBlock();
Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
#if !FEATURE_PAL && FEATURE_MACL
// For ACL's, get the security descriptor from the MutexSecurity.
if (mutexSecurity != null) {
secAttrs = new Win32Native.SECURITY_ATTRIBUTES();
secAttrs.nLength = (int)Marshal.SizeOf(secAttrs);
byte[] sd = mutexSecurity.GetSecurityDescriptorBinaryForm();
byte* pSecDescriptor = stackalloc byte[sd.Length];
Buffer.memcpy(sd, 0, pSecDescriptor, 0, sd.Length);
secAttrs.pSecurityDescriptor = pSecDescriptor;
}
#endif
RuntimeHelpers.CleanupCode cleanupCode = new RuntimeHelpers.CleanupCode(MutexCleanupCode);
MutexCleanupInfo cleanupInfo = new MutexCleanupInfo(null, false);
MutexTryCodeHelper tryCodeHelper = new MutexTryCodeHelper(initiallyOwned, cleanupInfo, name, secAttrs, this);
RuntimeHelpers.TryCode tryCode = new RuntimeHelpers.TryCode(tryCodeHelper.MutexTryCode);
RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(
tryCode,
cleanupCode,
cleanupInfo);
createdNew = tryCodeHelper.m_newMutex;
}
internal static unsafe void AcquireReservedMutex(ref bool bHandleObtained)
{
SafeWaitHandle handle = null;
bHandleObtained = false;
if (Environment.IsW2k3)
{
if (s_ReservedMutex == null)
{
Win32Native.SECURITY_ATTRIBUTES security_attributes;
MutexSecurity security = new MutexSecurity();
SecurityIdentifier identity = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
security.AddAccessRule(new MutexAccessRule(identity, MutexRights.FullControl, AccessControlType.Allow));
security_attributes = new Win32Native.SECURITY_ATTRIBUTES {
nLength = Marshal.SizeOf(security_attributes)
};
byte[] securityDescriptorBinaryForm = security.GetSecurityDescriptorBinaryForm();
byte* pDest = stackalloc byte[(IntPtr) securityDescriptorBinaryForm.Length];
Buffer.memcpy(securityDescriptorBinaryForm, 0, pDest, 0, securityDescriptorBinaryForm.Length);
security_attributes.pSecurityDescriptor = pDest;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
handle = Win32Native.CreateMutex(security_attributes, false, @"Global\CLR_RESERVED_MUTEX_NAME");
handle.SetAsReservedMutex();
}
int errorCode = Marshal.GetLastWin32Error();
if (handle.IsInvalid)
{
handle.SetHandleAsInvalid();
__Error.WinIOError(errorCode, @"Global\CLR_RESERVED_MUTEX_NAME");
}
Mutex mutex = new Mutex(handle);
Interlocked.CompareExchange<Mutex>(ref s_ReservedMutex, mutex, null);
}
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
try
{
s_ReservedMutex.WaitOne();
bHandleObtained = true;
}
catch (AbandonedMutexException)
{
bHandleObtained = true;
}
}
}
}
