| 1 | #pragma once |
| 2 | /* |
| 3 | * This file is part of the libCEC(R) library. |
| 4 | * |
| 5 | * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited. All rights reserved. |
| 6 | * libCEC(R) is an original work, containing original code. |
| 7 | * |
| 8 | * libCEC(R) is a trademark of Pulse-Eight Limited. |
| 9 | * |
| 10 | * This program is dual-licensed; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | * |
| 24 | * |
| 25 | * Alternatively, you can license this library under a commercial license, |
| 26 | * please contact Pulse-Eight Licensing for more information. |
| 27 | * |
| 28 | * For more information contact: |
| 29 | * Pulse-Eight Licensing <license@pulse-eight.com> |
| 30 | * http://www.pulse-eight.com/ |
| 31 | * http://www.pulse-eight.net/ |
| 32 | */ |
| 33 | |
| 34 | #include "../threads/mutex.h" |
| 35 | #include "../util/StdString.h" |
| 36 | |
| 37 | #if defined(__WINDOWS__) |
| 38 | #include "../windows/os-socket.h" |
| 39 | #else |
| 40 | #include "../posix/os-socket.h" |
| 41 | #endif |
| 42 | |
| 43 | // Common socket operations |
| 44 | |
| 45 | namespace PLATFORM |
| 46 | { |
| 47 | class ISocket : public PreventCopy |
| 48 | { |
| 49 | public: |
| 50 | ISocket(void) {}; |
| 51 | virtual ~ISocket(void) {} |
| 52 | |
| 53 | virtual bool Open(uint64_t iTimeoutMs = 0) = 0; |
| 54 | virtual void Close(void) = 0; |
| 55 | virtual void Shutdown(void) = 0; |
| 56 | virtual bool IsOpen(void) = 0; |
| 57 | virtual ssize_t Write(void* data, size_t len) = 0; |
| 58 | virtual ssize_t Read(void* data, size_t len, uint64_t iTimeoutMs = 0) = 0; |
| 59 | virtual CStdString GetError(void) = 0; |
| 60 | virtual int GetErrorNumber(void) = 0; |
| 61 | virtual CStdString GetName(void) = 0; |
| 62 | }; |
| 63 | |
| 64 | template <typename _SType> |
| 65 | class CCommonSocket : public ISocket |
| 66 | { |
| 67 | public: |
| 68 | CCommonSocket(_SType initialSocketValue, const CStdString &strName) : |
| 69 | m_socket(initialSocketValue), |
| 70 | m_strName(strName), |
| 71 | m_iError(0) {} |
| 72 | |
| 73 | virtual ~CCommonSocket(void) {} |
| 74 | |
| 75 | virtual CStdString GetError(void) |
| 76 | { |
| 77 | CStdString strError; |
| 78 | strError = m_strError.IsEmpty() && m_iError != 0 ? strerror(m_iError) : m_strError; |
| 79 | return strError; |
| 80 | } |
| 81 | |
| 82 | virtual int GetErrorNumber(void) |
| 83 | { |
| 84 | return m_iError; |
| 85 | } |
| 86 | |
| 87 | virtual CStdString GetName(void) |
| 88 | { |
| 89 | CStdString strName; |
| 90 | strName = m_strName; |
| 91 | return strName; |
| 92 | } |
| 93 | |
| 94 | protected: |
| 95 | _SType m_socket; |
| 96 | CStdString m_strError; |
| 97 | CStdString m_strName; |
| 98 | int m_iError; |
| 99 | CMutex m_mutex; |
| 100 | }; |
| 101 | |
| 102 | template <typename _Socket> |
| 103 | class CProtectedSocket : public ISocket |
| 104 | { |
| 105 | public: |
| 106 | CProtectedSocket(_Socket *socket) : |
| 107 | m_socket(socket), |
| 108 | m_iUseCount(0) {} |
| 109 | |
| 110 | virtual ~CProtectedSocket(void) |
| 111 | { |
| 112 | Close(); |
| 113 | delete m_socket; |
| 114 | } |
| 115 | |
| 116 | virtual bool Open(uint64_t iTimeoutMs = 0) |
| 117 | { |
| 118 | bool bReturn(false); |
| 119 | if (m_socket && WaitReady()) |
| 120 | { |
| 121 | bReturn = m_socket->Open(iTimeoutMs); |
| 122 | MarkReady(); |
| 123 | } |
| 124 | return bReturn; |
| 125 | } |
| 126 | |
| 127 | virtual void Close(void) |
| 128 | { |
| 129 | if (m_socket && WaitReady()) |
| 130 | { |
| 131 | m_socket->Close(); |
| 132 | MarkReady(); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | virtual void Shutdown(void) |
| 137 | { |
| 138 | if (m_socket && WaitReady()) |
| 139 | { |
| 140 | m_socket->Shutdown(); |
| 141 | MarkReady(); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | virtual bool IsOpen(void) |
| 146 | { |
| 147 | CLockObject lock(m_mutex); |
| 148 | return m_socket && m_socket->IsOpen(); |
| 149 | } |
| 150 | |
| 151 | virtual bool IsBusy(void) |
| 152 | { |
| 153 | CLockObject lock(m_mutex); |
| 154 | return m_socket && m_iUseCount > 0; |
| 155 | } |
| 156 | |
| 157 | virtual int GetUseCount(void) |
| 158 | { |
| 159 | CLockObject lock(m_mutex); |
| 160 | return m_iUseCount; |
| 161 | } |
| 162 | |
| 163 | virtual ssize_t Write(void* data, size_t len) |
| 164 | { |
| 165 | if (!m_socket || !WaitReady()) |
| 166 | return EINVAL; |
| 167 | |
| 168 | ssize_t iReturn = m_socket->Write(data, len); |
| 169 | MarkReady(); |
| 170 | |
| 171 | return iReturn; |
| 172 | } |
| 173 | |
| 174 | virtual ssize_t Read(void* data, size_t len, uint64_t iTimeoutMs = 0) |
| 175 | { |
| 176 | if (!m_socket || !WaitReady()) |
| 177 | return EINVAL; |
| 178 | |
| 179 | ssize_t iReturn = m_socket->Read(data, len, iTimeoutMs); |
| 180 | MarkReady(); |
| 181 | |
| 182 | return iReturn; |
| 183 | } |
| 184 | |
| 185 | virtual CStdString GetError(void) |
| 186 | { |
| 187 | CStdString strError; |
| 188 | CLockObject lock(m_mutex); |
| 189 | strError = m_socket ? m_socket->GetError() : ""; |
| 190 | return strError; |
| 191 | } |
| 192 | |
| 193 | virtual int GetErrorNumber(void) |
| 194 | { |
| 195 | CLockObject lock(m_mutex); |
| 196 | return m_socket ? m_socket->GetErrorNumber() : EINVAL; |
| 197 | } |
| 198 | |
| 199 | virtual CStdString GetName(void) |
| 200 | { |
| 201 | CStdString strName; |
| 202 | CLockObject lock(m_mutex); |
| 203 | strName = m_socket ? m_socket->GetName() : ""; |
| 204 | return strName; |
| 205 | } |
| 206 | |
| 207 | private: |
| 208 | bool WaitReady(void) |
| 209 | { |
| 210 | CLockObject lock(m_mutex); |
| 211 | if (m_iUseCount > 0) |
| 212 | m_condition.Wait(m_mutex); |
| 213 | |
| 214 | if (m_iUseCount > 0) |
| 215 | return false; |
| 216 | |
| 217 | ++m_iUseCount; |
| 218 | return true; |
| 219 | } |
| 220 | |
| 221 | void MarkReady(void) |
| 222 | { |
| 223 | CLockObject lock(m_mutex); |
| 224 | if (m_iUseCount > 0) |
| 225 | --m_iUseCount; |
| 226 | m_condition.Broadcast(); |
| 227 | } |
| 228 | |
| 229 | _Socket *m_socket; |
| 230 | CMutex m_mutex; |
| 231 | CCondition m_condition; |
| 232 | int m_iUseCount; |
| 233 | }; |
| 234 | }; |