C++ (Cpp) parse_proc_cpuinfo Beispiele

Beispiel #1

Datei: jsimd_powerpc.c Projekt: MatusKysel/libjpeg-turbo

init_simd (void)
{
  char *env = NULL;
#if !defined(__ALTIVEC__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
  int bufsize = 1024; /* an initial guess for the line buffer size limit */
#endif

  if (simd_support != ~0U)
    return;

  simd_support = 0;

#if defined(__ALTIVEC__) || defined(__APPLE__)
  simd_support |= JSIMD_ALTIVEC;
#elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
  while (!parse_proc_cpuinfo(bufsize)) {
    bufsize *= 2;
    if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
      break;
  }
#elif defined(__amigaos4__)
  uint32 altivec = 0;
  IExec->GetCPUInfoTags(GCIT_VectorUnit, &altivec, TAG_DONE);
  if(altivec == VECTORTYPE_ALTIVEC)
    simd_support |= JSIMD_ALTIVEC;
#endif

  /* Force different settings through environment variables */
  env = getenv("JSIMD_FORCEALTIVEC");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support = JSIMD_ALTIVEC;
  env = getenv("JSIMD_FORCENONE");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support = 0;
}

Beispiel #2

Datei: jsimd_arm.c Projekt: 2gis/2gisqt5android

init_simd (void)
{
  char *env = NULL;
#if !defined(__ARM_NEON__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
  int bufsize = 1024; /* an initial guess for the line buffer size limit */
#endif

  if (simd_support != ~0U)
    return;

  simd_support = 0;

#if defined(__ARM_NEON__)
  simd_support |= JSIMD_ARM_NEON;
#elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
  /* We still have a chance to use NEON regardless of globally used
   * -mcpu/-mfpu options passed to gcc by performing runtime detection via
   * /proc/cpuinfo parsing on linux/android */
  while (!parse_proc_cpuinfo(bufsize)) {
    bufsize *= 2;
    if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
      break;
  }
#endif

  /* Force different settings through environment variables */
  env = getenv("JSIMD_FORCE_ARM_NEON");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support &= JSIMD_ARM_NEON;
  env = getenv("JSIMD_FORCE_NO_SIMD");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support = 0;
}

Beispiel #3

Datei: jsimd_mips.c Projekt: brucetsao/libjpeg-turbo

init_simd (void)
{
  if (simd_support != ~0U)
    return;

  simd_support = 0;

#if defined(__mips__) && defined(__mips_dsp) && (__mips_dsp_rev >= 2)
  simd_support |= JSIMD_MIPS_DSPR2;
#elif defined(__linux__)
  /* We still have a chance to use MIPS DSPR2 regardless of globally used
   * -mdspr2 options passed to gcc by performing runtime detection via
   * /proc/cpuinfo parsing on linux */
  if (!parse_proc_cpuinfo("MIPS 74K"))
    return;
#endif
}

Beispiel #4

Datei: jsimd_arm64.c Projekt: Acidburn0zzz/libjpeg-turbo

init_simd (void)
{
  char *env = NULL;
#if defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
  int bufsize = 1024; /* an initial guess for the line buffer size limit */
#endif

  if (simd_support != ~0U)
    return;

  simd_support = 0;

  simd_support |= JSIMD_ARM_NEON;
#if defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
  while (!parse_proc_cpuinfo(bufsize)) {
    bufsize *= 2;
    if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
      break;
  }
#endif

  /* Force different settings through environment variables */
  env = getenv("JSIMD_FORCENEON");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support &= JSIMD_ARM_NEON;
  env = getenv("JSIMD_FORCENONE");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_support = 0;
  env = getenv("JSIMD_NOHUFFENC");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_huffman = 0;
  env = getenv("JSIMD_FASTLD3");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_features |= JSIMD_FASTLD3;
  if ((env != NULL) && (strcmp(env, "0") == 0))
    simd_features &= ~JSIMD_FASTLD3;
  env = getenv("JSIMD_FASTST3");
  if ((env != NULL) && (strcmp(env, "1") == 0))
    simd_features |= JSIMD_FASTST3;
  if ((env != NULL) && (strcmp(env, "0") == 0))
    simd_features &= ~JSIMD_FASTST3;
}