1 files changed, 226 insertions, 0 deletions
diff --git a/gruel/src/lib/thread.cc b/gruel/src/lib/thread.cc
new file mode 100644
index 000000000..8ebe822fb
--- /dev/null
+++ b/gruel/src/lib/thread.cc
@@ -0,0 +1,226 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gruel/thread.h>
+
+#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+
+#include <Windows.h>
+
+namespace gruel {
+
+  gr_thread_t
+  get_current_thread_id()
+  {
+    return GetCurrentThread();
+  }
+
+  void
+  thread_bind_to_processor(unsigned int n)
+  {
+    std::vector<unsigned int> mask(1, n);
+    thread_bind_to_processor(get_current_thread_id(), mask);
+  }
+
+  void
+  thread_bind_to_processor(const std::vector<unsigned int> &mask)
+  {
+    thread_bind_to_processor(get_current_thread_id(), mask);
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, unsigned int n)
+  {
+    std::vector<unsigned int> mask(1, n);
+    thread_bind_to_processor(thread, mask);
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
+  {
+    //DWORD_PTR mask = (1 << n);
+    DWORD_PTR dword_mask = 0;
+
+    std::vector<unsigned int> _mask = mask;
+    std::vector<unsigned int>::iterator itr;
+    for(itr = _mask.begin(); itr != _mask.end(); itr++)
+      dword_mask |= (1 << (*itr));
+
+    DWORD_PTR ret = SetThreadAffinityMask(thread, dword_mask);
+    if(ret == 0) {
+      std::stringstream s;
+      s << "thread_bind_to_processor failed with error: " << GetLastError() << std::endl;
+      throw std::runtime_error(s.str());
+    }
+  }
+
+  void
+  thread_unbind()
+  {
+    thread_unbind(get_current_thread_id());
+  }
+
+  void
+  thread_unbind(gr_thread_t thread)
+  {
+    DWORD_PTR dword_mask = sizeof(DWORD_PTR) - 1;
+    DWORD_PTR ret = SetThreadAffinityMask(thread, dword_mask);
+    if(ret == 0) {
+      std::stringstream s;
+      s << "thread_unbind failed with error: " << GetLastError() << std::endl;
+      throw std::runtime_error(s.str());
+    }
+  }
+} /* namespace gruel */
+
+#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
+
+namespace gruel {
+
+  gr_thread_t
+  get_current_thread_id()
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_bind_to_processor(unsigned int n)
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, unsigned int n)
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_bind_to_processor(const std::vector<unsigned int> &mask)
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_unbind()
+  {
+    // Not implemented on OSX
+  }
+
+  void
+  thread_unbind(gr_thread_t thread)
+  {
+    // Not implemented on OSX
+  }
+} /* namespace gruel */
+
+#else
+
+#include <sstream>
+#include <stdexcept>
+#include <pthread.h>
+
+namespace gruel {
+
+  gr_thread_t
+  get_current_thread_id()
+  {
+    return pthread_self();
+  }
+
+  void
+  thread_bind_to_processor(unsigned int n)
+  {
+    std::vector<unsigned int> mask(1, n);
+    thread_bind_to_processor(get_current_thread_id(), mask);
+  }
+
+  void
+  thread_bind_to_processor(const std::vector<unsigned int> &mask)
+  {
+    thread_bind_to_processor(get_current_thread_id(), mask);
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, unsigned int n)
+  {
+    std::vector<unsigned int> mask(1, n);
+    thread_bind_to_processor(thread, mask);
+  }
+
+  void
+  thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
+  {
+    cpu_set_t set;
+    size_t len = sizeof(cpu_set_t);
+    std::vector<unsigned int> _mask = mask;
+    std::vector<unsigned int>::iterator itr;
+
+    CPU_ZERO(&set);
+    for(itr = _mask.begin(); itr != _mask.end(); itr++)
+      CPU_SET(*itr, &set);
+
+    int ret = pthread_setaffinity_np(thread, len, &set);
+    if(ret != 0) {
+      std::stringstream s;
+      s << "thread_bind_to_processor failed with error: " << ret << std::endl;
+      throw std::runtime_error(s.str());
+    }
+  }
+
+  void
+  thread_unbind()
+  {
+    thread_unbind(get_current_thread_id());
+  }
+
+  void
+  thread_unbind(gr_thread_t thread)
+  {
+    cpu_set_t set;
+    size_t len = sizeof(cpu_set_t);
+
+    CPU_ZERO(&set);
+    long ncpus = sysconf(_SC_NPROCESSORS_ONLN);
+    for(long n = 0; n < ncpus; n++) {
+      CPU_SET(n, &set);
+    }
+
+    int ret = pthread_setaffinity_np(thread, len, &set);
+    if(ret != 0) {
+      std::stringstream s;
+      s << "thread_unbind failed with error: " << ret << std::endl;
+      throw std::runtime_error(s.str());
+    }
+  }
+} /* namespace gruel */
+
+#endif