mcs/class/referencesource/System/net/System/Net/_Semaphore.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="Semaphore.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //------------------------------------------------------------------------------
   6
   7 #pragma warning disable 618
   8
   9 namespace System.Net
  10 {
  11
  12
  13         using System;
  14         using System.Threading;
  15     using System.Security.Permissions;
  16
  17
  18     // used for Connection Pooling
  19     internal sealed class Semaphore : WaitHandle
  20     {
  21         internal Semaphore(int initialCount, int maxCount) : base() {
  22             lock (this) {
  23 #if MONO
  24                 int errorCode;
  25                 Handle = System.Threading.Semaphore.CreateSemaphore_internal(initialCount, maxCount, null, out errorCode);
  26 #else
  27                 //
  28                 Handle = UnsafeNclNativeMethods.CreateSemaphore(IntPtr.Zero, initialCount, maxCount, IntPtr.Zero);
  29 #endif
  30             }
  31         }
  32
  33         /*
  34         // Consider removing.
  35         public Semaphore(int initialCount, int maxCount, string name) : base() {
  36             lock (this) {
  37                 //
  38
  39
  40
  41 */
  42
  43         internal bool ReleaseSemaphore() {
  44 #if MONO
  45             int previousCount;
  46             return System.Threading.Semaphore.ReleaseSemaphore_internal (Handle, 1, out previousCount);
  47 #else
  48 #if DEBUG
  49             int previousCount;
  50             bool success = UnsafeNclNativeMethods.ReleaseSemaphore(Handle, 1, out previousCount);
  51             GlobalLog.Print("ReleaseSemaphore#"+ValidationHelper.HashString(this)+" success:"+success+" previousCount:"+previousCount.ToString());
  52             return success;
  53 #else
  54             return UnsafeNclNativeMethods.ReleaseSemaphore(Handle, 1, IntPtr.Zero);
  55 #endif
  56 #endif
  57         }
  58
  59         /*
  60         // Consider removing.
  61         internal bool ReleaseSemaphore(int releaseCount, out int previousCount) {
  62             return UnsafeNclNativeMethods.ReleaseSemaphore(Handle, releaseCount, out previousCount);
  63         }
  64         */
  65     }
  66 }