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Merge branch 'linux-better-mem-report' into 'master'

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Use MemAvailable instead

See merge request STJr/SRB2!281
This commit is contained in:
Monster Iestyn 2018-10-01 16:25:21 -04:00
commit a605ee9c11
1 changed files with 73 additions and 30 deletions
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51
src/sdl/i_system.c
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@ -124,6 +124,10 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
#include "macosx/mac_resources.h"
#endif
#ifndef errno
#include <errno.h>
#endif
// Locations for searching the srb2.srb
#if defined (__unix__) || defined(__APPLE__) || defined (UNIXCOMMON)
#define DEFAULTWADLOCATION1 "/usr/local/share/games/SRB2"
@ -2091,7 +2095,6 @@ INT32 I_StartupSystem(void)
return 0;
}
//
// I_Quit
//
@ -2712,7 +2715,30 @@ const char *I_LocateWad(void)
#ifdef __linux__
#define MEMINFO_FILE "/proc/meminfo"
#define MEMTOTAL "MemTotal:"
#define MEMAVAILABLE "MemAvailable:"
#define MEMFREE "MemFree:"
#define CACHED "Cached:"
#define BUFFERS "Buffers:"
#define SHMEM "Shmem:"
/* Parse the contents of /proc/meminfo (in buf), return value of "name"
* (example: MemTotal) */
static long get_entry(const char* name, const char* buf)
{
long val;
char* hit = strstr(buf, name);
if (hit == NULL) {
return -1;
}
errno = 0;
val = strtol(hit + strlen(name), NULL, 10);
if (errno != 0) {
CONS_Alert(CONS_ERROR, M_GetText("get_entry: strtol() failed: %s\n"), strerror(errno));
return -1;
}
return val;
}
#endif
// quick fix for compil
@ -2784,6 +2810,11 @@ UINT32 I_GetFreeMem(UINT32 *total)
UINT32 totalKBytes;
INT32 n;
INT32 meminfo_fd = -1;
long Cached;
long MemFree;
long Buffers;
long Shmem;
long MemAvailable = -1;
meminfo_fd = open(MEMINFO_FILE, O_RDONLY);
n = read(meminfo_fd, buf, 1023);
@ -2809,16 +2840,28 @@ UINT32 I_GetFreeMem(UINT32 *total)
memTag += sizeof (MEMTOTAL);
totalKBytes = atoi(memTag);
if ((memTag = strstr(buf, MEMFREE)) == NULL)
if ((memTag = strstr(buf, MEMAVAILABLE)) == NULL)
{
Cached = get_entry(CACHED, buf);
MemFree = get_entry(MEMFREE, buf);
Buffers = get_entry(BUFFERS, buf);
Shmem = get_entry(SHMEM, buf);
MemAvailable = Cached + MemFree + Buffers - Shmem;
if (MemAvailable == -1)
{
// Error
if (total)
*total = 0L;
return 0;
}
memTag += sizeof (MEMFREE);
freeKBytes = MemAvailable;
}
else
{
memTag += sizeof (MEMAVAILABLE);
freeKBytes = atoi(memTag);
}
if (total)
*total = totalKBytes << 10;