Revision f230a1cf deps/v8/src/platform-posix.cc

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deps/v8/src/platform-posix.cc
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// own but contains the parts which are the same across POSIX platforms Linux,
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// Mac OS, FreeBSD and OpenBSD.
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#include "platform-posix.h"


  		




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#include <dlfcn.h>


  		




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#include <pthread.h>


  		




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#if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)


  		




  ......




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}


  		




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uint64_t OS::TotalPhysicalMemory() {


  		




  
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#if V8_OS_MACOSX


  		




  
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  int mib[2];


  		




  
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  mib[0] = CTL_HW;


  		




  
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  mib[1] = HW_MEMSIZE;


  		




  
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  int64_t size = 0;


  		




  
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  size_t len = sizeof(size);


  		




  
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  if (sysctl(mib, 2, &size, &len, NULL, 0) != 0) {


  		




  
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    UNREACHABLE();


  		




  
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    return 0;


  		




  
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  }


  		




  
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  return static_cast<uint64_t>(size);


  		




  
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#elif V8_OS_FREEBSD


  		




  
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  int pages, page_size;


  		




  
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  size_t size = sizeof(pages);


  		




  
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  sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, NULL, 0);


  		




  
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  sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, NULL, 0);


  		




  
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  if (pages == -1 || page_size == -1) {


  		




  
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    UNREACHABLE();


  		




  
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    return 0;


  		




  
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  }


  		




  
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  return static_cast<uint64_t>(pages) * page_size;


  		




  
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#elif V8_OS_CYGWIN


  		




  
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  MEMORYSTATUS memory_info;


  		




  
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  memory_info.dwLength = sizeof(memory_info);


  		




  
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  if (!GlobalMemoryStatus(&memory_info)) {


  		




  
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    UNREACHABLE();


  		




  
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    return 0;


  		




  
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  }


  		




  
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  return static_cast<uint64_t>(memory_info.dwTotalPhys);


  		




  
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#else


  		




  
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  intptr_t pages = sysconf(_SC_PHYS_PAGES);


  		




  
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  intptr_t page_size = sysconf(_SC_PAGESIZE);


  		




  
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  if (pages == -1 || page_size == -1) {


  		




  
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    UNREACHABLE();


  		




  
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    return 0;


  		




  
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  }


  		




  
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  return static_cast<uint64_t>(pages) * page_size;


  		




  
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#endif


  		




  
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}


  		




  
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int OS::ActivationFrameAlignment() {


  		




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#if V8_TARGET_ARCH_ARM


  		




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  // On EABI ARM targets this is required for fp correctness in the


  		












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