53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
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#pragma once
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#define biner_zone_ptr(T) uintptr_t
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typedef struct biner_zone_t {
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uintptr_t tail;
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size_t size;
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uint8_t* ptr;
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} biner_zone_t;
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#define BINER_ZONE_RESERVE 1024
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static inline uintptr_t biner_zone_alloc(biner_zone_t* z, size_t sz) {
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assert(z != NULL);
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assert(sz > 0);
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if (z->ptr == NULL) {
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z->ptr = calloc(1, sz);
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if (z->ptr == NULL) {
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fprintf(stderr, "malloc failure\n");
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abort();
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}
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}
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const uintptr_t oldtail = z->tail;
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z->tail += sz;
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if (z->tail > z->size) {
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z->size = z->tail;
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z->ptr = realloc(z->ptr, z->size);
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}
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memset(z->ptr+oldtail, 0, sz);
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return oldtail;
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}
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static inline uintptr_t biner_zone_strnew(biner_zone_t* z, const char* str) {
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assert(z != NULL);
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const uintptr_t ret = biner_zone_alloc(z, strlen(str)+1);
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strcpy((char*) (z->ptr+ret), str);
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return ret;
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}
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static inline void biner_zone_deinitialize(biner_zone_t* z) {
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assert(z != NULL);
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if (z->ptr != NULL) free(z->ptr);
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}
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