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#include "runtime.h"
#include "defs.h"
#include "os.h"
#include "malloc.h"
void*
runtime·SysAlloc(uintptr n)
{
void *v;
mstats.sys += n;
v = runtime·mmap(nil, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_PRIVATE, -1, 0);
if(v < (void*)4096) {
runtime·printf("mmap: errno=%p\n", v);
runtime·throw("mmap");
}
return v;
}
void
runtime·SysUnused(void *v, uintptr n)
{
USED(v);
USED(n);
// TODO(rsc): call madvise MADV_DONTNEED
}
void
runtime·SysFree(void *v, uintptr n)
{
mstats.sys -= n;
runtime·munmap(v, n);
}
void
runtime·SysMemInit(void)
{
}
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