Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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/* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef IARRAY_H
#define IARRAY_H
#warning DO NOT USE THIS YET. It may look thread-safe but it is not!
#include "uint64.h"
#include <stddef.h>
#ifdef __MINGW32__
#include <windows.h>
#else
#include <pthread.h>
#endif
/* this is an indirect array; it only reallocs the indirect index, not
* the whole array. The actual data does not move. So there is no need
* to lock the array for read accesses. */
typedef struct {
char** pages;
size_t elemsize,pagefence,elemperpage,bytesperpage;
/* pagefence is the number of pages + 1,
* i.e. the first out of bounds index in "pages" */
#ifdef __MINGW32__
CRITICAL_SECTION cs;
#else
pthread_mutex_t m;
#endif
} iarray;
void iarray_init(iarray* ia,size_t elemsize);
void* iarray_get(iarray* ia,size_t pos);
void* iarray_allocate(iarray* ia,size_t pos);
/* WARNING: do not use the array during or after iarray_free, make sure
* no threads are potentially doing anything with the iarray while it is
* being freed! */
void iarray_free(iarray* ia);
#endif