Fix registered/shareware detection.

[xonotic/darkplaces.git] / zone.c

diff --git a/zone.c b/zone.c
index 02920535287b75970eaf7f258849f75cd2204748..2c72c113cfb50dd6c30e0a86eaef8665c279c24b 100644 (file)
--- a/zone.c
+++ b/zone.c
@@ -40,15 +40,26 @@ unsigned int sentinel_seed;
 qboolean 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
+
 // LordHavoc: enables our own low-level allocator (instead of malloc)
-#define MEMCLUMPING 0
-#define MEMCLUMPING_FREECLUMPS 0
+#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<<27)
+#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)
@@ -92,6 +103,46 @@ 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>
+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)
+               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)
@@ -331,7 +382,12 @@ void *_Mem_Alloc(mempool_t *pool, void *olddata, size_t size, size_t alignment,
                return NULL;
        }
        if (pool == NULL)
-               Sys_Error("Mem_Alloc: pool == NULL (alloc at %s:%i)", filename, fileline);
+       {
+               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)
@@ -641,44 +697,6 @@ void Mem_ExpandableArray_FreeArray(memexpandablearray_t *l)
        memset(l, 0, sizeof(*l));
 }
 
-// VorteX: hacked Mem_ExpandableArray_AllocRecord, it does allocate record at certain index
-void *Mem_ExpandableArray_AllocRecordAtIndex(memexpandablearray_t *l, size_t index)
-{
-       size_t j;
-       if (index >= l->numarrays)
-       {
-               if (l->numarrays == l->maxarrays)
-               {
-                       memexpandablearray_array_t *oldarrays = l->arrays;
-                       l->maxarrays = max(l->maxarrays * 2, 128);
-                       l->arrays = (memexpandablearray_array_t*) Mem_Alloc(l->mempool, l->maxarrays * sizeof(*l->arrays));
-                       if (oldarrays)
-                       {
-                               memcpy(l->arrays, oldarrays, l->numarrays * sizeof(*l->arrays));
-                               Mem_Free(oldarrays);
-                       }
-               }
-               l->arrays[index].numflaggedrecords = 0;
-               l->arrays[index].data = (unsigned char *) Mem_Alloc(l->mempool, (l->recordsize + 1) * l->numrecordsperarray);
-               l->arrays[index].allocflags = l->arrays[index].data + l->recordsize * l->numrecordsperarray;
-               l->numarrays++;
-       }
-       if (l->arrays[index].numflaggedrecords < l->numrecordsperarray)
-       {
-               for (j = 0;j < l->numrecordsperarray;j++)
-               {
-                       if (!l->arrays[index].allocflags[j])
-                       {
-                               l->arrays[index].allocflags[j] = true;
-                               l->arrays[index].numflaggedrecords++;
-                               memset(l->arrays[index].data + l->recordsize * j, 0, l->recordsize);
-                               return (void *)(l->arrays[index].data + l->recordsize * j);
-                       }
-               }
-       }
-       return NULL;
-}
-
 void *Mem_ExpandableArray_AllocRecord(memexpandablearray_t *l)
 {
        size_t i, j;