85 lines
1.9 KiB
Objective-C
85 lines
1.9 KiB
Objective-C
// 4 december 2014
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#import <stdlib.h>
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#import "uipriv_darwin.h"
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NSMutableArray *allocations;
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void initAlloc(void)
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{
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allocations = [NSMutableArray new];
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}
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#define UINT8(p) ((uint8_t *) (p))
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#define PVOID(p) ((void *) (p))
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#define EXTRA (sizeof (size_t) + sizeof (const char **))
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#define DATA(p) PVOID(UINT8(p) + EXTRA)
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#define BASE(p) PVOID(UINT8(p) - EXTRA)
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#define SIZE(p) ((size_t *) (p))
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#define CCHAR(p) ((const char **) (p))
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#define TYPE(p) CCHAR(UINT8(p) + sizeof (size_t))
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void uninitAlloc(void)
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{
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if ([allocations count] == 0) {
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[allocations release];
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return;
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}
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fprintf(stderr, "[libui] leaked allocations:\n");
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[allocations enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
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NSValue *v;
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void *ptr;
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v = (NSValue *) obj;
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ptr = [v pointerValue];
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fprintf(stderr, "[libui] %p %s\n", ptr, *TYPE(ptr));
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}];
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complain("either you left something around or there's a bug in libui");
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}
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void *uiAlloc(size_t size, const char *type)
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{
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void *out;
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out = malloc(EXTRA + size);
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if (out == NULL) {
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fprintf(stderr, "memory exhausted in uiAlloc()\n");
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abort();
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}
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memset(DATA(out), 0, size);
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*SIZE(out) = size;
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*TYPE(out) = type;
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[allocations addObject:[NSValue valueWithPointer:out]];
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return DATA(out);
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}
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void *uiRealloc(void *p, size_t new, const char *type)
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{
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void *out;
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size_t *s;
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if (p == NULL)
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return uiAlloc(new, type);
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p = BASE(p);
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out = realloc(p, EXTRA + new);
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if (out == NULL) {
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fprintf(stderr, "memory exhausted in uiRealloc()\n");
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abort();
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}
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s = SIZE(out);
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if (new <= *s)
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memset(((uint8_t *) DATA(out)) + *s, 0, new - *s);
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*s = new;
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[allocations removeObject:[NSValue valueWithPointer:p]];
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[allocations addObject:[NSValue valueWithPointer:out]];
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return DATA(out);
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}
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void uiFree(void *p)
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{
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if (p == NULL)
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complain("attempt to uiFree(NULL); there's a bug somewhere");
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p = BASE(p);
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free(p);
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[allocations removeObject:[NSValue valueWithPointer:p]];
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}
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