Reorganise into faster (R2) and finer (R3)

src/common/sysutils.h

@@ -0,0 +1,170 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rubber Band Library
+    An audio time-stretching and pitch-shifting library.
+    Copyright 2007-2022 Particular Programs Ltd.
+
+    This program 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.  See the file
+    COPYING included with this distribution for more information.
+
+    Alternatively, if you have a valid commercial licence for the
+    Rubber Band Library obtained by agreement with the copyright
+    holders, you may redistribute and/or modify it under the terms
+    described in that licence.
+
+    If you wish to distribute code using the Rubber Band Library
+    under terms other than those of the GNU General Public License,
+    you must obtain a valid commercial licence before doing so.
+*/
+
+#ifndef RUBBERBAND_SYSUTILS_H
+#define RUBBERBAND_SYSUTILS_H
+
+#ifdef __clang__
+#  define R__ __restrict__
+#else
+#  ifdef __GNUC__
+#    define R__ __restrict__
+#  endif
+#endif
+
+#ifdef _MSC_VER
+#  if _MSC_VER < 1800
+#    include "float_cast/float_cast.h"
+#  endif
+#  ifndef R__
+#    define R__ __restrict
+#  endif
+#endif 
+
+#ifndef R__
+#  define R__
+#endif
+
+#if defined(_MSC_VER)
+#  include <malloc.h>
+#  include <process.h>
+#  define alloca _alloca
+#  define getpid _getpid
+#else
+#  if defined(__MINGW32__)
+#    include <malloc.h>
+#  elif defined(__GNUC__)
+#    ifndef alloca
+#      define alloca __builtin_alloca
+#    endif
+#  elif defined(HAVE_ALLOCA_H)
+#    include <alloca.h>
+#  else
+#    ifndef __USE_MISC
+#    define __USE_MISC
+#    endif
+#    include <stdlib.h>
+#  endif
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER < 1700
+#  define uint8_t unsigned __int8
+#  define uint16_t unsigned __int16
+#  define uint32_t unsigned __int32
+#elif defined(_MSC_VER)
+#  define ssize_t long
+#  include <stdint.h>
+#else
+#  include <stdint.h>
+#endif
+
+#include <math.h>
+
+namespace RubberBand {
+
+extern const char *system_get_platform_tag();
+extern bool system_is_multiprocessor();
+extern void system_specific_initialise();
+extern void system_specific_application_initialise();
+
+#ifdef _WIN32
+struct timeval { long tv_sec; long tv_usec; };
+void gettimeofday(struct timeval *p, void *tz);
+#endif // _WIN32
+
+#ifdef _MSC_VER
+void usleep(unsigned long);
+#endif // _MSC_VER
+
+inline double mod(double x, double y) { return x - (y * floor(x / y)); }
+inline float modf(float x, float y) { return x - (y * float(floor(x / y))); }
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif // M_PI
+
+inline double princarg(double a) { return mod(a + M_PI, -2.0 * M_PI) + M_PI; }
+inline float princargf(float a) { return modf(a + (float)M_PI, -2.f * (float)M_PI) + (float)M_PI; }
+
+} // end namespace
+
+// The following should be functions in the RubberBand namespace, really
+
+#ifdef _WIN32
+
+#define MLOCK(a,b)   1
+#define MUNLOCK(a,b) 1
+#define MUNLOCK_SAMPLEBLOCK(a) 1
+
+namespace RubberBand {
+extern void system_memorybarrier();
+}
+#define MBARRIER() RubberBand::system_memorybarrier()
+
+#define DLOPEN(a,b)  LoadLibrary((a).toStdWString().c_str())
+#define DLSYM(a,b)   GetProcAddress((HINSTANCE)(a),(b))
+#define DLCLOSE(a)   FreeLibrary((HINSTANCE)(a))
+#define DLERROR()    ""
+
+#else // !_WIN32
+
+#include <sys/mman.h>
+#include <dlfcn.h>
+#include <stdio.h>
+
+#define MLOCK(a,b)   mlock((char *)(a),(b))
+#define MUNLOCK(a,b) (munlock((char *)(a),(b)) ? (perror("munlock failed"), 0) : 0)
+#define MUNLOCK_SAMPLEBLOCK(a) do { if (!(a).empty()) { const float &b = *(a).begin(); MUNLOCK(&b, (a).capacity() * sizeof(float)); } } while(0);
+
+#ifdef __APPLE__
+#  if defined __MAC_10_12
+#    define MBARRIER() __sync_synchronize()
+#  else
+#    include <libkern/OSAtomic.h>
+#    define MBARRIER() OSMemoryBarrier()
+#  endif
+#else
+#  if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+#    define MBARRIER() __sync_synchronize()
+#  else
+namespace RubberBand {
+extern void system_memorybarrier();
+}
+#    define MBARRIER() ::RubberBand::system_memorybarrier()
+#  endif
+#endif
+
+#define DLOPEN(a,b)  dlopen((a).toStdString().c_str(),(b))
+#define DLSYM(a,b)   dlsym((a),(b))
+#define DLCLOSE(a)   dlclose((a))
+#define DLERROR()    dlerror()
+
+#endif // !_WIN32
+
+#ifdef NO_THREADING
+#  undef MBARRIER
+#  define MBARRIER() 
+#endif // NO_THREADING
+
+#endif
+