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implement Sys_LowPhysicalMemory #865

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implement Sys_LowPhysicalMemory #865

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3dabe52
implement Sys_LowPhysicalMemory
kokorokonekuto Feb 15, 2026
f55de6a
fix on freebsd
kokorokonekuto Feb 15, 2026
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35 changes: 35 additions & 0 deletions code/sys/sys_unix.c
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,15 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <time.h>
#include <sys/resource.h>

#if defined (__linux__)
#include <sys/sysinfo.h>
#endif

#if defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__APPLE__)
#include <sys/sysctl.h>
#include <sys/types.h>
#endif

qboolean stdinIsATTY;

static char execBuffer[ 1024 ];
Expand Down Expand Up @@ -595,7 +604,33 @@ TODO
*/
qboolean Sys_LowPhysicalMemory( void )
{
#if defined (__linux__)
struct sysinfo info;

if ( sysinfo(&info) == -1 )
return qfalse;

return info.totalram <= MEM_THRESHOLD;
#elif defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__APPLE__)
#if defined (__FreeBSD__)
int mib[2] = { CTL_HW, HW_PHYSMEM };
#elif defined (__OpenBSD__)
int mib[2] = { CTL_HW, HW_PHYSMEM64 };
#elif defined (__APPLE__)
int mib[2] = { CTL_HW, HW_MEMSIZE };
#endif

size_t len;
int64_t total_mem;

len = sizeof(int64_t);
if ( sysctl(mib, 2, &total_mem, &len, NULL, 0) == -1 )
return qfalse;

return total_mem <= MEM_THRESHOLD;
#else
return qfalse;
#endif
}

/*
Expand Down