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- /* Copyright 2015 Pierre Ossman for Cendio AB
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- #ifdef WIN32
- #include <windows.h>
- #else
- #include <pthread.h>
- #include <signal.h>
- #include <unistd.h>
- #endif
-
- #include <rdr/Exception.h>
-
- #include <os/Mutex.h>
- #include <os/Thread.h>
-
- using namespace os;
-
- Thread::Thread() : running(false), threadId(NULL)
- {
- mutex = new Mutex;
-
- #ifdef WIN32
- threadId = new HANDLE;
- #else
- threadId = new pthread_t;
- #endif
- }
-
- Thread::~Thread()
- {
- #ifdef WIN32
- delete (HANDLE*)threadId;
- #else
- if (isRunning())
- pthread_cancel(*(pthread_t*)threadId);
- delete (pthread_t*)threadId;
- #endif
-
- delete mutex;
- }
-
- void Thread::start()
- {
- AutoMutex a(mutex);
-
- #ifdef WIN32
- *(HANDLE*)threadId = CreateThread(NULL, 0, startRoutine, this, 0, NULL);
- if (*(HANDLE*)threadId == NULL)
- throw rdr::SystemException("Failed to create thread", GetLastError());
- #else
- int ret;
- sigset_t all, old;
-
- // Creating threads from libraries is a bit evil, so mitigate the
- // issue by at least avoiding signals on these threads
- sigfillset(&all);
- ret = pthread_sigmask(SIG_SETMASK, &all, &old);
- if (ret != 0)
- throw rdr::SystemException("Failed to mask signals", ret);
-
- ret = pthread_create((pthread_t*)threadId, NULL, startRoutine, this);
-
- pthread_sigmask(SIG_SETMASK, &old, NULL);
-
- if (ret != 0)
- throw rdr::SystemException("Failed to create thread", ret);
- #endif
-
- running = true;
- }
-
- void Thread::wait()
- {
- if (!isRunning())
- return;
-
- #ifdef WIN32
- DWORD ret;
-
- ret = WaitForSingleObject(*(HANDLE*)threadId, INFINITE);
- if (ret != WAIT_OBJECT_0)
- throw rdr::SystemException("Failed to join thread", GetLastError());
- #else
- int ret;
-
- ret = pthread_join(*(pthread_t*)threadId, NULL);
- if (ret != 0)
- throw rdr::SystemException("Failed to join thread", ret);
- #endif
- }
-
- bool Thread::isRunning()
- {
- AutoMutex a(mutex);
-
- return running;
- }
-
- size_t Thread::getSystemCPUCount()
- {
- #ifdef WIN32
- SYSTEM_INFO si;
- size_t count;
- DWORD mask;
-
- GetSystemInfo(&si);
-
- count = 0;
- for (mask = si.dwActiveProcessorMask;mask != 0;mask >>= 1) {
- if (mask & 0x1)
- count++;
- }
-
- if (count > si.dwNumberOfProcessors)
- count = si.dwNumberOfProcessors;
-
- return count;
- #else
- long ret;
-
- ret = sysconf(_SC_NPROCESSORS_ONLN);
- if (ret == -1)
- return 0;
-
- return ret;
- #endif
- }
-
- #ifdef WIN32
- long unsigned __stdcall Thread::startRoutine(void* data)
- #else
- void* Thread::startRoutine(void* data)
- #endif
- {
- Thread *self;
-
- self = (Thread*)data;
-
- try {
- self->worker();
- } catch(...) {
- }
-
- self->mutex->lock();
- self->running = false;
- self->mutex->unlock();
-
- return 0;
- }
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