rosapps/smartpdf/fitz/base/base_memory.c

   1 #include "fitz-base.h"
   2
   3 /* Make this thread local storage if you wish.  */
   4
   5 static void *stdmalloc(fz_memorycontext *mem, int n)
   6 {
   7 #if 0
   8         void *p = malloc(n);
   9         if (!p)
  10                 fprintf(stderr, "failed to malloc %d bytes\n", n);
  11         return p;
  12 #else
  13         return malloc(n);
  14 #endif
  15 }
  16
  17 static void *stdrealloc(fz_memorycontext *mem, void *p, int n)
  18 {
  19 #if 0
  20         void *np = realloc(p, n);
  21         if (np == nil)
  22                 fprintf(stderr, "realloc failed %d nytes", n);
  23         else if (np == p)
  24                 fprintf(stderr, "realloc kept %d\n", n);
  25         else
  26                 fprintf(stderr, "realloc moved %d\n", n);
  27         return np;
  28 #else
  29         return realloc(p, n);
  30 #endif
  31 }
  32
  33 static void stdfree(fz_memorycontext *mem, void *p)
  34 {
  35         free(p);
  36 }
  37
  38 static fz_memorycontext defmem = { stdmalloc, stdrealloc, stdfree };
  39 static fz_memorycontext *curmem = &defmem;
  40
  41 fz_error fz_koutofmem = {
  42         -1,
  43         {"out of memory"},
  44         {"<malloc>"},
  45         {"memory.c"},
  46         0
  47 };
  48
  49 fz_memorycontext *
  50 fz_currentmemorycontext()
  51 {
  52         return curmem;
  53 }
  54
  55 void
  56 fz_setmemorycontext(fz_memorycontext *mem)
  57 {
  58         curmem = mem;
  59 }
  60
  61 void *
  62 fz_malloc(int n)
  63 {
  64         fz_memorycontext *mem = fz_currentmemorycontext();
  65         return mem->malloc(mem, n);
  66 }
  67
  68 void *
  69 fz_realloc(void *p, int n)
  70 {
  71         fz_memorycontext *mem = fz_currentmemorycontext();
  72         return mem->realloc(mem, p, n);
  73 }
  74
  75 void
  76 fz_free(void *p)
  77 {
  78         fz_memorycontext *mem = fz_currentmemorycontext();
  79         mem->free(mem, p);
  80 }
  81
  82 char *
  83 fz_strdup(char *s)
  84 {
  85         int len = strlen(s);
  86         char *ns = fz_malloc(len + 1);
  87         if (ns)
  88                 strcpy(ns, s);
  89         return ns;
  90 }
  91