windows/JackWinThread.cpp

   1 /*
   2  Copyright (C) 2004-2008 Grame
   3
   4  This program is free software; you can redistribute it and/or modify
   5  it under the terms of the GNU Lesser General Public License as published by
   6  the Free Software Foundation; either version 2.1 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public License
  15  along with this program; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18  */
  19
  20 #include "JackWinThread.h"
  21 #include "JackError.h"
  22 #include "JackTime.h"
  23 #include <assert.h>
  24 #include <stdio.h>
  25
  26 namespace Jack
  27 {
  28
  29 DWORD WINAPI JackWinThread::ThreadHandler(void* arg)
  30 {
  31     JackWinThread* obj = (JackWinThread*)arg;
  32     JackRunnableInterface* runnable = obj->fRunnable;
  33
  34     // Signal creation thread when started with StartSync
  35     jack_log("JackWinThread::ThreadHandler : start");
  36     obj->fStatus = kIniting;
  37
  38     // Call Init method
  39     if (!runnable->Init()) {
  40         jack_error("Thread init fails: thread quits");
  41         return 0;
  42     }
  43
  44     obj->fStatus = kRunning;
  45
  46     // If Init succeed, start the thread loop
  47     bool res = true;
  48     while (obj->fStatus == kRunning && res) {
  49         res = runnable->Execute();
  50     }
  51
  52     SetEvent(obj->fEvent);
  53     jack_log("JackWinThread::ThreadHandler : exit");
  54     return 0;
  55 }
  56
  57 JackWinThread::JackWinThread(JackRunnableInterface* runnable)
  58         : JackMMCSS(), JackThreadInterface(runnable, 0, false, 0)
  59 {
  60     fEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
  61     fThread = (HANDLE)NULL;
  62     assert(fEvent);
  63 }
  64
  65 JackWinThread::~JackWinThread()
  66 {
  67     CloseHandle(fEvent);
  68     CloseHandle(fThread);
  69 }
  70
  71 int JackWinThread::Start()
  72 {
  73     fStatus = kStarting;
  74
  75     // Check if the thread was correctly started
  76     if (StartImp(&fThread, fPriority, fRealTime, ThreadHandler, this) < 0) {
  77         fStatus = kIdle;
  78         return -1;
  79     } else {
  80         return 0;
  81     }
  82 }
  83
  84 int JackWinThread::StartSync()
  85 {
  86     fStatus = kStarting;
  87
  88     if (StartImp(&fThread, fPriority, fRealTime, ThreadHandler, this) < 0) {
  89         fStatus = kIdle;
  90         return -1;
  91     } else {
  92         int count = 0;
  93         while (fStatus == kStarting && ++count < 1000) {
  94             JackSleep(1000);
  95         }
  96         return (count == 1000) ? -1 : 0;
  97     }
  98 }
  99
 100 int JackWinThread::StartImp(jack_native_thread_t* thread, int priority, int realtime, ThreadCallback start_routine, void* arg)
 101 {
 102     DWORD id;
 103     *thread = CreateThread(NULL, 0, start_routine, arg, 0, &id);
 104
 105     if (*thread == NULL) {
 106         jack_error("Cannot create thread error = %d", GetLastError());
 107         return -1;
 108     }
 109
 110     if (realtime) {
 111
 112         jack_log("JackWinThread::StartImp : create RT thread");
 113         if (!SetThreadPriority(*thread, THREAD_PRIORITY_TIME_CRITICAL)) {
 114             jack_error("Cannot set priority class = %d", GetLastError());
 115             return -1;
 116         }
 117
 118     } else {
 119         jack_log("JackWinThread::StartImp : create non RT thread");
 120     }
 121
 122     return 0;
 123 }
 124
 125 // voir http://www.microsoft.com/belux/msdn/nl/community/columns/ldoc/multithread1.mspx
 126
 127 int JackWinThread::Kill()
 128 {
 129     if (fThread != (HANDLE)NULL) { // If thread has been started
 130         TerminateThread(fThread, 0);
 131         WaitForSingleObject(fThread, INFINITE);
 132         CloseHandle(fThread);
 133         jack_log("JackWinThread::Kill");
 134         fThread = (HANDLE)NULL;
 135         fStatus = kIdle;
 136         return 0;
 137     } else {
 138         return -1;
 139     }
 140 }
 141
 142 int JackWinThread::Stop()
 143 {
 144     if (fThread != (HANDLE)NULL) { // If thread has been started
 145         jack_log("JackWinThread::Stop");
 146         fStatus = kIdle; // Request for the thread to stop
 147         WaitForSingleObject(fEvent, INFINITE);
 148         CloseHandle(fThread);
 149         fThread = (HANDLE)NULL;
 150         return 0;
 151     } else {
 152         return -1;
 153     }
 154 }
 155
 156 int JackWinThread::KillImp(jack_native_thread_t thread)
 157 {
 158     if (thread != (HANDLE)NULL) { // If thread has been started
 159         TerminateThread(thread, 0);
 160         WaitForSingleObject(thread, INFINITE);
 161         CloseHandle(thread);
 162         return 0;
 163     } else {
 164         return -1;
 165     }
 166 }
 167
 168 int JackWinThread::StopImp(jack_native_thread_t thread)
 169 {
 170     if (thread) { // If thread has been started
 171         WaitForSingleObject(thread, INFINITE);
 172         CloseHandle(thread);
 173         return 0;
 174     } else {
 175         return -1;
 176     }
 177 }
 178
 179 int JackWinThread::AcquireRealTime()
 180 {
 181     return (fThread != (HANDLE)NULL) ? AcquireRealTimeImp(fThread, fPriority) : -1;
 182 }
 183
 184 int JackWinThread::AcquireSelfRealTime()
 185 {
 186     return AcquireRealTimeImp(GetCurrentThread(), fPriority);
 187 }
 188
 189 int JackWinThread::AcquireRealTime(int priority)
 190 {
 191     fPriority = priority;
 192     return AcquireRealTime();
 193 }
 194
 195 int JackWinThread::AcquireSelfRealTime(int priority)
 196 {
 197     fPriority = priority;
 198     return AcquireSelfRealTime();
 199 }
 200
 201 int JackWinThread::AcquireRealTimeImp(jack_native_thread_t thread, int priority)
 202 {
 203     jack_log("JackWinThread::AcquireRealTimeImp priority = %d", priority);
 204
 205     if (priority >= 90 && MMCSSAcquireRealTime(thread) == 0) {
 206         jack_info("MMCSS API used to acquire RT for thread");
 207         return 0;
 208     } else {
 209         jack_info("MMCSS API not used...");
 210         if (SetThreadPriority(thread, THREAD_PRIORITY_TIME_CRITICAL)) {
 211             return 0;
 212         } else {
 213             jack_error("Cannot set thread priority = %d", GetLastError());
 214             return -1;
 215         }
 216     }
 217 }
 218
 219 int JackWinThread::DropRealTime()
 220 {
 221     return (fThread != (HANDLE)NULL) ? DropRealTimeImp(fThread) : -1;
 222 }
 223
 224 int JackWinThread::DropSelfRealTime()
 225 {
 226     return DropRealTimeImp(GetCurrentThread());
 227 }
 228
 229 int JackWinThread::DropRealTimeImp(jack_native_thread_t thread)
 230 {
 231     if (MMCSSDropRealTime(thread) == 0 ) {
 232         jack_info("MMCSS API used to drop RT for thread");
 233         return 0;
 234     } else if (SetThreadPriority(thread, THREAD_PRIORITY_NORMAL)) {
 235         return 0;
 236     } else {
 237         jack_error("Cannot set thread priority = %d", GetLastError());
 238         return -1;
 239     }
 240 }
 241
 242 jack_native_thread_t JackWinThread::GetThreadID()
 243 {
 244     return fThread;
 245 }
 246
 247 bool JackWinThread::IsThread()
 248 {
 249     return GetCurrentThread() == fThread;
 250 }
 251
 252 void JackWinThread::Terminate()
 253 {
 254     jack_log("JackWinThread::Terminate");
 255     ExitThread(0);
 256 }
 257
 258 SERVER_EXPORT void ThreadExit()
 259 {
 260     jack_log("ThreadExit");
 261     ExitThread(0);
 262 }
 263
 264 } // end of namespace
 265
 266 bool jack_get_thread_realtime_priority_range(int * min_ptr, int * max_ptr)
 267 {
 268     return false;
 269 }
 270
 271 bool jack_tls_allocate_key(jack_tls_key *key_ptr)
 272 {
 273     DWORD key;
 274
 275     key = TlsAlloc();
 276     if (key == TLS_OUT_OF_INDEXES)
 277     {
 278         jack_error("TlsAlloc() failed. Error is %d", (unsigned int)GetLastError());
 279         return false;
 280     }
 281
 282     *key_ptr = key;
 283     return true;
 284 }
 285
 286 bool jack_tls_free_key(jack_tls_key key)
 287 {
 288     if (!TlsFree(key))
 289     {
 290         jack_error("TlsFree() failed. Error is %d", (unsigned int)GetLastError());
 291         return false;
 292     }
 293
 294     return true;
 295 }
 296
 297 bool jack_tls_set(jack_tls_key key, void *data_ptr)
 298 {
 299     if (!TlsSetValue(key, data_ptr))
 300     {
 301         jack_error("TlsSetValue() failed. Error is %d", (unsigned int)GetLastError());
 302         return false;
 303     }
 304
 305     return true;
 306 }
 307
 308 void *jack_tls_get(jack_tls_key key)
 309 {
 310     return TlsGetValue(key);
 311 }