libgo/runtime/mem_posix_memalign.c

   1 #include <errno.h>
   2
   3 #include "runtime.h"
   4 #include "arch.h"
   5 #include "malloc.h"
   6
   7 void*
   8 runtime_SysAlloc(uintptr n)
   9 {
  10         void *p;
  11
  12         mstats.sys += n;
  13         errno = posix_memalign(&p, PageSize, n);
  14         if (errno > 0) {
  15                 perror("posix_memalign");
  16                 exit(2);
  17         }
  18         return p;
  19 }
  20
  21 void
  22 runtime_SysUnused(void *v, uintptr n)
  23 {
  24         USED(v);
  25         USED(n);
  26         // TODO(rsc): call madvise MADV_DONTNEED
  27 }
  28
  29 void
  30 runtime_SysFree(void *v, uintptr n)
  31 {
  32         mstats.sys -= n;
  33         free(v);
  34 }
  35
  36 void*
  37 runtime_SysReserve(void *v, uintptr n)
  38 {
  39         USED(v);
  40         return runtime_SysAlloc(n);
  41 }
  42
  43 void
  44 runtime_SysMap(void *v, uintptr n)
  45 {
  46         USED(v);
  47         USED(n);
  48 }