In-progress work: refactoring PAL not to be instanced.

This removes a lot of useless passing around of the PAL object.

src/xenia/core/pal_posix.cc

@@ -0,0 +1,62 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/core/pal.h>
+
+
+namespace {
+typedef struct xe_pal_posix {
+
+} xe_pal_posix_t;
+
+xe_pal_posix_t* pal;
+}
+
+
+void xe_pal_dealloc();
+int xe_pal_init(xe_pal_options_t options) {
+  pal = (xe_pal_posix_t)xe_calloc(sizeof(pal));
+
+  //
+
+  atexit(xe_pal_dealloc);
+  return 0;
+}
+
+void xe_pal_dealloc() {
+  //
+
+  xe_free(pal);
+}
+
+int xe_pal_get_system_info(xe_system_info* out_info) {
+  xe_zero_struct(out_info, sizeof(xe_system_info));
+  out_info->processors.physical_count = 1;
+  out_info->processors.logical_count  = 1;
+
+#if defined(_SC_NPROCESSORS_ONLN)
+  int nproc = sysconf(_SC_NPROCESSORS_ONLN);
+  if (nproc >= 1) {
+    // Only able to get logical count.
+    sysInfo->processors.logicalCount = nproc;
+  }
+#else
+#warning no calls to get processor counts
+#endif  // _SC_NPROCESSORS_ONLN
+
+  return 0;
+}
+
+double xe_pal_now() {
+  // http://www.kernel.org/doc/man-pages/online/pages/man2/clock_gettime.2.html
+  // http://juliusdavies.ca/posix_clocks/clock_realtime_linux_faq.html
+  struct timespec ts;
+  CPIGNORE(clock_gettime(CLOCK_MONOTONIC, &ts));
+  return (double)(ts.tv_sec + (ts.tv_nsec * 1000000000.0));
+}