*/
// Z_zone.c
-#include "quakedef.h"
+#include "darkplaces.h"
#ifdef WIN32
#include <windows.h>
+#include <winbase.h>
#else
#include <unistd.h>
#endif
-#ifdef _MSC_VER
-#include <vadefs.h>
-#else
-#include <stdint.h>
-#endif
#define MEMHEADER_SENTINEL_FOR_ADDRESS(p) ((sentinel_seed ^ (unsigned int) (uintptr_t) (p)) + sentinel_seed)
unsigned int sentinel_seed;
-// LordHavoc: enables our own low-level allocator (instead of malloc)
-#define MEMCLUMPING 0
-#define MEMCLUMPING_FREECLUMPS 0
+qbool mem_bigendian = false;
+void *mem_mutex = NULL;
+
+// divVerent: enables file backed malloc using mmap to conserve swap space (instead of malloc)
+#ifndef FILE_BACKED_MALLOC
+# define FILE_BACKED_MALLOC 0
+#endif
+
+// LadyHavoc: enables our own low-level allocator (instead of malloc)
+#ifndef MEMCLUMPING
+# define MEMCLUMPING 0
+#endif
+#ifndef MEMCLUMPING_FREECLUMPS
+# define MEMCLUMPING_FREECLUMPS 0
+#endif
#if MEMCLUMPING
// smallest unit we care about is this many bytes
#define MEMUNIT 128
// try to do 32MB clumps, but overhead eats into this
-#define MEMWANTCLUMPSIZE (1<<29)
+#ifndef MEMWANTCLUMPSIZE
+# define MEMWANTCLUMPSIZE (1<<27)
+#endif
// give malloc padding so we can't waste most of a page at the end
#define MEMCLUMPSIZE (MEMWANTCLUMPSIZE - MEMWANTCLUMPSIZE/MEMUNIT/32 - 128)
#define MEMBITS (MEMCLUMPSIZE / MEMUNIT)
#endif
-cvar_t developer_memory = {0, "developer_memory", "0", "prints debugging information about memory allocations"};
-cvar_t developer_memorydebug = {0, "developer_memorydebug", "0", "enables memory corruption checks (very slow)"};
+cvar_t developer_memory = {CF_CLIENT | CF_SERVER, "developer_memory", "0", "prints debugging information about memory allocations"};
+cvar_t developer_memorydebug = {CF_CLIENT | CF_SERVER, "developer_memorydebug", "0", "enables memory corruption checks (very slow)"};
+cvar_t developer_memoryreportlargerthanmb = {CF_CLIENT | CF_SERVER, "developer_memorylargerthanmb", "16", "prints debugging information about memory allocations over this size"};
+cvar_t sys_memsize_physical = {CF_CLIENT | CF_SERVER | CF_READONLY, "sys_memsize_physical", "", "physical memory size in MB (or empty if unknown)"};
+cvar_t sys_memsize_virtual = {CF_CLIENT | CF_SERVER | CF_READONLY, "sys_memsize_virtual", "", "virtual memory size in MB (or empty if unknown)"};
static mempool_t *poolchain = NULL;
+void Mem_PrintStats(void);
+void Mem_PrintList(size_t minallocationsize);
+
+#if FILE_BACKED_MALLOC
+#include <stdlib.h>
+#include <sys/mman.h>
+#ifndef MAP_NORESERVE
+#define MAP_NORESERVE 0
+#endif
+typedef struct mmap_data_s
+{
+ size_t len;
+}
+mmap_data_t;
+static void *mmap_malloc(size_t size)
+{
+ char vabuf[MAX_OSPATH + 1];
+ char *tmpdir = getenv("TEMP");
+ mmap_data_t *data;
+ int fd;
+ size += sizeof(mmap_data_t); // waste block
+ dpsnprintf(vabuf, sizeof(vabuf), "%s/darkplaces.XXXXXX", tmpdir ? tmpdir : "/tmp");
+ fd = mkstemp(vabuf);
+ if(fd < 0)
+ return NULL;
+ ftruncate(fd, size);
+ data = (unsigned char *) mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NORESERVE, fd, 0);
+ close(fd);
+ unlink(vabuf);
+ if(!data || data == (void *)-1)
+ return NULL;
+ data->len = size;
+ return (void *) (data + 1);
+}
+static void mmap_free(void *mem)
+{
+ mmap_data_t *data;
+ if(!mem)
+ return;
+ data = ((mmap_data_t *) mem) - 1;
+ munmap(data, data->len);
+}
+#define malloc mmap_malloc
+#define free mmap_free
+#endif
+
#if MEMCLUMPING != 2
// some platforms have a malloc that returns NULL but succeeds later
// (Windows growing its swapfile for example)
static void *attempt_malloc(size_t size)
{
+#ifndef WIN32
+ return malloc(size);
+#else
void *base;
// try for half a second or so
unsigned int attempts = 500;
Sys_Sleep(1000);
}
return NULL;
+#endif
}
#endif
#if MEMCLUMPING
if (size <= MEMCLUMPSIZE)
{
- int index;
- unsigned int bit;
- unsigned int needbits;
- unsigned int startbit;
- unsigned int endbit;
- unsigned int needints;
- int startindex;
- int endindex;
+ intptr_t index;
+ size_t bit;
+ size_t needbits;
+ size_t startbit;
+ size_t endbit;
+ size_t needints;
+ intptr_t startindex;
+ intptr_t endindex;
unsigned int value;
unsigned int mask;
unsigned int *array;
static void Clump_FreeBlock(void *base, size_t size)
{
#if MEMCLUMPING
- unsigned int needbits;
- unsigned int startbit;
- unsigned int endbit;
- unsigned int bit;
+ size_t needbits;
+ size_t startbit;
+ size_t endbit;
+ size_t bit;
memclump_t **clumpchainpointer;
memclump_t *clump;
unsigned char *start = (unsigned char *)base;
return NULL;
}
if (pool == NULL)
- Sys_Error("Mem_Alloc: pool == NULL (alloc at %s:%i)", filename, fileline);
- if (developer.integer && developer_memory.integer)
- Con_Printf("Mem_Alloc: pool %s, file %s:%i, size %i bytes\n", pool->name, filename, fileline, (int)size);
- //if (developer.integer && developer_memorydebug.integer)
+ {
+ if(olddata)
+ pool = ((memheader_t *)((unsigned char *) olddata - sizeof(memheader_t)))->pool;
+ else
+ Sys_Error("Mem_Alloc: pool == NULL (alloc at %s:%i)", filename, fileline);
+ }
+ if (mem_mutex)
+ Thread_LockMutex(mem_mutex);
+ if (developer_memory.integer || size >= developer_memoryreportlargerthanmb.value * 1048576)
+ Con_DPrintf("Mem_Alloc: pool %s, file %s:%i, size %f bytes (%f MB)\n", pool->name, filename, fileline, (double)size, (double)size / 1048576.0f);
+ //if (developer.integer > 0 && developer_memorydebug.integer)
// _Mem_CheckSentinelsGlobal(filename, fileline);
pool->totalsize += size;
realsize = alignment + sizeof(memheader_t) + size + sizeof(sentinel2);
pool->realsize += realsize;
base = (unsigned char *)Clump_AllocBlock(realsize);
- if (base== NULL)
- Sys_Error("Mem_Alloc: out of memory (alloc at %s:%i)", filename, fileline);
+ if (base == NULL)
+ {
+ Mem_PrintList(0);
+ Mem_PrintStats();
+ Mem_PrintList(1<<30);
+ Mem_PrintStats();
+ Sys_Error("Mem_Alloc: out of memory (alloc of size %f (%.3fMB) at %s:%i)", (double)realsize, (double)realsize / (1 << 20), filename, fileline);
+ }
// calculate address that aligns the end of the memheader_t to the specified alignment
mem = (memheader_t*)((((size_t)base + sizeof(memheader_t) + (alignment-1)) & ~(alignment-1)) - sizeof(memheader_t));
mem->baseaddress = (void*)base;
memcpy((unsigned char *) mem + sizeof(memheader_t) + mem->size, &sentinel2, sizeof(sentinel2));
// append to head of list
- mem->next = pool->chain;
- mem->prev = NULL;
- pool->chain = mem;
- if (mem->next)
- mem->next->prev = mem;
+ List_Add(&mem->list, &pool->chain);
+
+ if (mem_mutex)
+ Thread_UnlockMutex(mem_mutex);
// copy the shared portion in the case of a realloc, then memset the rest
sharedsize = 0;
sentinel1 = MEMHEADER_SENTINEL_FOR_ADDRESS(&mem->sentinel);
sentinel2 = MEMHEADER_SENTINEL_FOR_ADDRESS((unsigned char *) mem + sizeof(memheader_t) + mem->size);
if (mem->sentinel != sentinel1)
- Sys_Error("Mem_Free: trashed header sentinel 1 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
+ Sys_Error("Mem_Free: trashed head sentinel (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
if (memcmp((unsigned char *) mem + sizeof(memheader_t) + mem->size, &sentinel2, sizeof(sentinel2)))
- Sys_Error("Mem_Free: trashed header sentinel 2 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
+ Sys_Error("Mem_Free: trashed tail sentinel (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
pool = mem->pool;
- if (developer.integer && developer_memory.integer)
- Con_Printf("Mem_Free: pool %s, alloc %s:%i, free %s:%i, size %i bytes\n", pool->name, mem->filename, mem->fileline, filename, fileline, (int)(mem->size));
+ if (developer_memory.integer)
+ Con_DPrintf("Mem_Free: pool %s, alloc %s:%i, free %s:%i, size %i bytes\n", pool->name, mem->filename, mem->fileline, filename, fileline, (int)(mem->size));
// unlink memheader from doubly linked list
- if ((mem->prev ? mem->prev->next != mem : pool->chain != mem) || (mem->next && mem->next->prev != mem))
+ if (mem->list.prev->next != &mem->list || mem->list.next->prev != &mem->list)
Sys_Error("Mem_Free: not allocated or double freed (free at %s:%i)", filename, fileline);
- if (mem->prev)
- mem->prev->next = mem->next;
- else
- pool->chain = mem->next;
- if (mem->next)
- mem->next->prev = mem->prev;
+ if (mem_mutex)
+ Thread_LockMutex(mem_mutex);
+ List_Delete(&mem->list);
// memheader has been unlinked, do the actual free now
size = mem->size;
realsize = sizeof(memheader_t) + size + sizeof(sentinel2);
pool->totalsize -= size;
pool->realsize -= realsize;
Clump_FreeBlock(mem->baseaddress, realsize);
+ if (mem_mutex)
+ Thread_UnlockMutex(mem_mutex);
}
void _Mem_Free(void *data, const char *filename, int fileline)
return;
}
- if (developer.integer && developer_memorydebug.integer)
+ if (developer_memorydebug.integer)
{
//_Mem_CheckSentinelsGlobal(filename, fileline);
if (!Mem_IsAllocated(NULL, data))
_Mem_FreeBlock((memheader_t *)((unsigned char *) data - sizeof(memheader_t)), filename, fileline);
}
-mempool_t *_Mem_AllocPool(const char *name, int flags, mempool_t *parent, const char *filename, int fileline)
+mempool_t *_Mem_AllocPool(const char *name, unsigned flags, mempool_t *parent, const char *filename, int fileline)
{
mempool_t *pool;
- //if (developer.integer && developer_memorydebug.integer)
- // _Mem_CheckSentinelsGlobal(filename, fileline);
+ if (developer_memorydebug.integer)
+ _Mem_CheckSentinelsGlobal(filename, fileline);
pool = (mempool_t *)Clump_AllocBlock(sizeof(mempool_t));
if (pool == NULL)
+ {
+ Mem_PrintList(0);
+ Mem_PrintStats();
+ Mem_PrintList(1<<30);
+ Mem_PrintStats();
Sys_Error("Mem_AllocPool: out of memory (allocpool at %s:%i)", filename, fileline);
+ }
memset(pool, 0, sizeof(mempool_t));
pool->sentinel1 = MEMHEADER_SENTINEL_FOR_ADDRESS(&pool->sentinel1);
pool->sentinel2 = MEMHEADER_SENTINEL_FOR_ADDRESS(&pool->sentinel2);
pool->filename = filename;
pool->fileline = fileline;
pool->flags = flags;
- pool->chain = NULL;
+ List_Create(&pool->chain);
pool->totalsize = 0;
pool->realsize = sizeof(mempool_t);
- strlcpy (pool->name, name, sizeof (pool->name));
+ dp_strlcpy (pool->name, name, sizeof (pool->name));
pool->parent = parent;
pool->next = poolchain;
poolchain = pool;
mempool_t *pool = *poolpointer;
mempool_t **chainaddress, *iter, *temp;
- //if (developer.integer && developer_memorydebug.integer)
- // _Mem_CheckSentinelsGlobal(filename, fileline);
+ if (developer_memorydebug.integer)
+ _Mem_CheckSentinelsGlobal(filename, fileline);
if (pool)
{
// unlink pool from chain
*chainaddress = pool->next;
// free memory owned by the pool
- while (pool->chain)
- _Mem_FreeBlock(pool->chain, filename, fileline);
+ while (!List_Is_Empty(&pool->chain))
+ _Mem_FreeBlock(List_First_Entry(&pool->chain, memheader_t, list), filename, fileline);
// free child pools, too
- for(iter = poolchain; iter; temp = iter = iter->next)
+ for(iter = poolchain; iter; iter = temp) {
+ temp = iter->next;
if(iter->parent == pool)
_Mem_FreePool(&temp, filename, fileline);
+ }
// free the pool itself
Clump_FreeBlock(pool, sizeof(*pool));
{
mempool_t *chainaddress;
- if (developer.integer && developer_memorydebug.integer)
+ if (developer_memorydebug.integer)
{
//_Mem_CheckSentinelsGlobal(filename, fileline);
// check if this pool is in the poolchain
if (pool == NULL)
Sys_Error("Mem_EmptyPool: pool == NULL (emptypool at %s:%i)", filename, fileline);
if (pool->sentinel1 != MEMHEADER_SENTINEL_FOR_ADDRESS(&pool->sentinel1))
- Sys_Error("Mem_EmptyPool: trashed pool sentinel 2 (allocpool at %s:%i, emptypool at %s:%i)", pool->filename, pool->fileline, filename, fileline);
- if (pool->sentinel2 != MEMHEADER_SENTINEL_FOR_ADDRESS(&pool->sentinel2))
Sys_Error("Mem_EmptyPool: trashed pool sentinel 1 (allocpool at %s:%i, emptypool at %s:%i)", pool->filename, pool->fileline, filename, fileline);
+ if (pool->sentinel2 != MEMHEADER_SENTINEL_FOR_ADDRESS(&pool->sentinel2))
+ Sys_Error("Mem_EmptyPool: trashed pool sentinel 2 (allocpool at %s:%i, emptypool at %s:%i)", pool->filename, pool->fileline, filename, fileline);
// free memory owned by the pool
- while (pool->chain)
- _Mem_FreeBlock(pool->chain, filename, fileline);
+ while (!List_Is_Empty(&pool->chain))
+ _Mem_FreeBlock(List_First_Entry(&pool->chain, memheader_t, list), filename, fileline);
// empty child pools, too
for(chainaddress = poolchain; chainaddress; chainaddress = chainaddress->next)
sentinel1 = MEMHEADER_SENTINEL_FOR_ADDRESS(&mem->sentinel);
sentinel2 = MEMHEADER_SENTINEL_FOR_ADDRESS((unsigned char *) mem + sizeof(memheader_t) + mem->size);
if (mem->sentinel != sentinel1)
- Sys_Error("Mem_Free: trashed header sentinel 1 (alloc at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
+ Sys_Error("Mem_Free: trashed head sentinel (alloc at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
if (memcmp((unsigned char *) mem + sizeof(memheader_t) + mem->size, &sentinel2, sizeof(sentinel2)))
- Sys_Error("Mem_Free: trashed header sentinel 2 (alloc at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
+ Sys_Error("Mem_Free: trashed tail sentinel (alloc at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
}
#if MEMCLUMPING
Sys_Error("Mem_CheckSentinelsGlobal: trashed pool sentinel 2 (allocpool at %s:%i, sentinel check at %s:%i)", pool->filename, pool->fileline, filename, fileline);
}
for (pool = poolchain;pool;pool = pool->next)
- for (mem = pool->chain;mem;mem = mem->next)
+ List_For_Each_Entry(mem, &pool->chain, memheader_t, list)
_Mem_CheckSentinels((void *)((unsigned char *) mem + sizeof(memheader_t)), filename, fileline);
#if MEMCLUMPING
for (pool = poolchain;pool;pool = pool->next)
#endif
}
-qboolean Mem_IsAllocated(mempool_t *pool, void *data)
+qbool Mem_IsAllocated(mempool_t *pool, const void *data)
{
memheader_t *header;
memheader_t *target;
{
// search only one pool
target = (memheader_t *)((unsigned char *) data - sizeof(memheader_t));
- for( header = pool->chain ; header ; header = header->next )
+ List_For_Each_Entry(header, &pool->chain, memheader_t, list)
if( header == target )
return true;
}
{
j = (p - l->arrays[i].data) / l->recordsize;
if (p != l->arrays[i].data + j * l->recordsize)
- Sys_Error("Mem_ExpandableArray_FreeRecord: no such record %p\n", p);
+ Sys_Error("Mem_ExpandableArray_FreeRecord: no such record %p\n", (void *)p);
if (!l->arrays[i].allocflags[j])
- Sys_Error("Mem_ExpandableArray_FreeRecord: record %p is already free!\n", p);
+ Sys_Error("Mem_ExpandableArray_FreeRecord: record %p is already free!\n", (void *)p);
l->arrays[i].allocflags[j] = false;
l->arrays[i].numflaggedrecords--;
return;
Con_Printf("total allocated size: %lu bytes (%.3fMB)\n", (unsigned long)realsize, realsize / 1048576.0);
for (pool = poolchain;pool;pool = pool->next)
{
- if ((pool->flags & POOLFLAG_TEMP) && pool->chain)
+ if ((pool->flags & POOLFLAG_TEMP) && !List_Is_Empty(&pool->chain))
{
- Con_Printf("Memory pool %p has sprung a leak totalling %lu bytes (%.3fMB)! Listing contents...\n", (void *)pool, (unsigned long)pool->totalsize, pool->totalsize / 1048576.0);
- for (mem = pool->chain;mem;mem = mem->next)
+ Con_Printf(CON_WARN "Memory pool %p has sprung a leak totalling %lu bytes (%.3fMB)! Listing contents...\n", (void *)pool, (unsigned long)pool->totalsize, pool->totalsize / 1048576.0);
+ List_For_Each_Entry(mem, &pool->chain, memheader_t, list)
Con_Printf("%10lu bytes allocated at %s:%i\n", (unsigned long)mem->size, mem->filename, mem->fileline);
}
}
"size name\n");
for (pool = poolchain;pool;pool = pool->next)
{
- Con_Printf("%10luk (%10luk actual) %s (%+li byte change) %s\n", (unsigned long) ((pool->totalsize + 1023) / 1024), (unsigned long)((pool->realsize + 1023) / 1024), pool->name, (long)pool->totalsize - pool->lastchecksize, (pool->flags & POOLFLAG_TEMP) ? "TEMP" : "");
+ Con_Printf("%10luk (%10luk actual) %s (%+li byte change) %s\n", (unsigned long) ((pool->totalsize + 1023) / 1024), (unsigned long)((pool->realsize + 1023) / 1024), pool->name, (long)(pool->totalsize - pool->lastchecksize), (pool->flags & POOLFLAG_TEMP) ? "TEMP" : "");
pool->lastchecksize = pool->totalsize;
- for (mem = pool->chain;mem;mem = mem->next)
+ List_For_Each_Entry(mem, &pool->chain, memheader_t, list)
if (mem->size >= minallocationsize)
Con_Printf("%10lu bytes allocated at %s:%i\n", (unsigned long)mem->size, mem->filename, mem->fileline);
}
}
-void MemList_f(void)
+static void MemList_f(cmd_state_t *cmd)
{
- switch(Cmd_Argc())
+ switch(Cmd_Argc(cmd))
{
case 1:
Mem_PrintList(1<<30);
Mem_PrintStats();
break;
case 2:
- Mem_PrintList(atoi(Cmd_Argv(1)) * 1024);
+ Mem_PrintList(atoi(Cmd_Argv(cmd, 1)) * 1024);
Mem_PrintStats();
break;
default:
}
}
-extern void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal);
-void MemStats_f(void)
+static void MemStats_f(cmd_state_t *cmd)
{
Mem_CheckSentinelsGlobal();
- R_TextureStats_Print(false, false, true);
- GL_Mesh_ListVBOs(false);
Mem_PrintStats();
}
-char* Mem_strdup (mempool_t *pool, const char* s)
+char *_Mem_strdup(mempool_t *pool, const char *s, const char *filename, int fileline)
{
char* p;
- size_t sz = strlen (s) + 1;
- if (s == NULL) return NULL;
- p = (char*)Mem_Alloc (pool, sz);
- strlcpy (p, s, sz);
+ size_t sz;
+ if (s == NULL)
+ return NULL;
+ sz = strlen (s) + 1;
+ p = (char*)_Mem_Alloc (pool, NULL, sz, alignof(char), filename, fileline);
+ dp_strlcpy (p, s, sz);
return p;
}
*/
void Memory_Init (void)
{
+ static union {unsigned short s;unsigned char b[2];} u;
+ u.s = 0x100;
+ mem_bigendian = u.b[0] != 0;
+
sentinel_seed = rand();
poolchain = NULL;
tempmempool = Mem_AllocPool("Temporary Memory", POOLFLAG_TEMP, NULL);
zonemempool = Mem_AllocPool("Zone", 0, NULL);
+
+ if (Thread_HasThreads())
+ mem_mutex = Thread_CreateMutex();
}
void Memory_Shutdown (void)
{
// Mem_FreePool (&zonemempool);
// Mem_FreePool (&tempmempool);
+
+ if (mem_mutex)
+ Thread_DestroyMutex(mem_mutex);
+ mem_mutex = NULL;
}
void Memory_Init_Commands (void)
{
- Cmd_AddCommand ("memstats", MemStats_f, "prints memory system statistics");
- Cmd_AddCommand ("memlist", MemList_f, "prints memory pool information (or if used as memlist 5 lists individual allocations of 5K or larger, 0 lists all allocations)");
+ Cmd_AddCommand(CF_SHARED, "memstats", MemStats_f, "prints memory system statistics");
+ Cmd_AddCommand(CF_SHARED, "memlist", MemList_f, "prints memory pool information (or if used as memlist 5 lists individual allocations of 5K or larger, 0 lists all allocations)");
+
Cvar_RegisterVariable (&developer_memory);
Cvar_RegisterVariable (&developer_memorydebug);
+ Cvar_RegisterVariable (&developer_memoryreportlargerthanmb);
+ Cvar_RegisterVariable (&sys_memsize_physical);
+ Cvar_RegisterVariable (&sys_memsize_virtual);
+
+#if defined(WIN32)
+#ifdef _WIN64
+ {
+ MEMORYSTATUSEX status;
+ // first guess
+ Cvar_SetValueQuick(&sys_memsize_virtual, 8388608);
+ // then improve
+ status.dwLength = sizeof(status);
+ if(GlobalMemoryStatusEx(&status))
+ {
+ Cvar_SetValueQuick(&sys_memsize_physical, status.ullTotalPhys / 1048576.0);
+ Cvar_SetValueQuick(&sys_memsize_virtual, min(sys_memsize_virtual.value, status.ullTotalVirtual / 1048576.0));
+ }
+ }
+#else
+ {
+ MEMORYSTATUS status;
+ // first guess
+ Cvar_SetValueQuick(&sys_memsize_virtual, 2048);
+ // then improve
+ status.dwLength = sizeof(status);
+ GlobalMemoryStatus(&status);
+ Cvar_SetValueQuick(&sys_memsize_physical, status.dwTotalPhys / 1048576.0);
+ Cvar_SetValueQuick(&sys_memsize_virtual, min(sys_memsize_virtual.value, status.dwTotalVirtual / 1048576.0));
+ }
+#endif
+#else
+ {
+ // first guess
+ Cvar_SetValueQuick(&sys_memsize_virtual, (sizeof(void*) == 4) ? 2048 : 268435456);
+ // then improve
+ {
+ // Linux, and BSD with linprocfs mounted
+ FILE *f = fopen("/proc/meminfo", "r");
+ if(f)
+ {
+ static char buf[1024];
+ while(fgets(buf, sizeof(buf), f))
+ {
+ const char *p = buf;
+ if(!COM_ParseToken_Console(&p))
+ continue;
+ if(!strcmp(com_token, "MemTotal:"))
+ {
+ if(!COM_ParseToken_Console(&p))
+ continue;
+ Cvar_SetValueQuick(&sys_memsize_physical, atof(com_token) / 1024.0);
+ }
+ if(!strcmp(com_token, "SwapTotal:"))
+ {
+ if(!COM_ParseToken_Console(&p))
+ continue;
+ Cvar_SetValueQuick(&sys_memsize_virtual, min(sys_memsize_virtual.value , atof(com_token) / 1024.0 + sys_memsize_physical.value));
+ }
+ }
+ fclose(f);
+ }
+ }
+ }
+#endif
}
projects / xonotic / darkplaces.git / blobdiff