src/liblzma/common/hardware_cputhreads.c

   1 // SPDX-License-Identifier: 0BSD
   2
   3 ///////////////////////////////////////////////////////////////////////////////
   4 //
   5 /// \file       hardware_cputhreads.c
   6 /// \brief      Get the number of CPU threads or cores
   7 //
   8 //  Author:     Lasse Collin
   9 //
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #include "common.h"
  13
  14 #include "tuklib_cpucores.h"
  15
  16
  17 #ifdef HAVE_SYMBOL_VERSIONS_LINUX
  18 // This is for compatibility with binaries linked against liblzma that
  19 // has been patched with xz-5.2.2-compat-libs.patch from RHEL/CentOS 7.
  20 LZMA_SYMVER_API("lzma_cputhreads@XZ_5.2.2",
  21         uint32_t, lzma_cputhreads_522)(void) lzma_nothrow
  22                 __attribute__((__alias__("lzma_cputhreads_52")));
  23
  24 LZMA_SYMVER_API("lzma_cputhreads@@XZ_5.2",
  25         uint32_t, lzma_cputhreads_52)(void) lzma_nothrow;
  26
  27 #define lzma_cputhreads lzma_cputhreads_52
  28 #endif
  29 extern LZMA_API(uint32_t)
  30 lzma_cputhreads(void)
  31 {
  32         return tuklib_cpucores();
  33 }