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012f706b67
We never touch ulen. If DB_DBT_USERMEM and ulen is too small, we set size, (do not write anything) and return DB_BUFFER_SMALL. This includes test_db_dbt_mem_behavior.c Closes #146 git-svn-id: file:///svn/tokudb@1034 c7de825b-a66e-492c-adef-691d508d4ae1
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#define _FILE_OFFSET_BITS 64
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#include "ybt.h"
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#include "memory.h"
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#include <errno.h>
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#include <string.h>
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DBT *toku_init_dbt (DBT *ybt) {
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memset(ybt, 0, sizeof(*ybt));
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return ybt;
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}
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DBT *toku_fill_dbt(DBT *dbt, bytevec k, ITEMLEN len) {
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toku_init_dbt(dbt);
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dbt->size=len;
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dbt->data=(char*)k;
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return dbt;
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}
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int toku_dbt_set_value (DBT *ybt, bytevec val, ITEMLEN vallen, void **staticptrp) {
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if (ybt->flags==DB_DBT_MALLOC) {
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domalloc:
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ybt->data = toku_malloc(vallen);
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if (errno!=0) return errno;
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} else if (ybt->flags==DB_DBT_REALLOC) {
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if (ybt->data==0) goto domalloc;
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ybt->data = toku_realloc(ybt->data, vallen);
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if (errno!=0) return errno;
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} else if (ybt->flags==DB_DBT_USERMEM) {
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ybt->size = vallen;
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if (ybt->ulen < vallen) return DB_BUFFER_SMALL;
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} else {
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if (staticptrp==0) return -1;
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void *staticptr=*staticptrp;
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//void *old=staticptr;
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if (staticptr==0)
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staticptr = toku_malloc(vallen);
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else
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staticptr = toku_realloc(staticptr, vallen);
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if (errno!=0) return errno;
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//if (old!=staticptr) printf("%s:%d MALLOC --> %p\n", __FILE__, __LINE__, staticptr);
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*staticptrp = staticptr;
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ybt->data = staticptr;
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}
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ybt->size = vallen;
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if (ybt->size>0) {
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memcpy(ybt->data, val, vallen);
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}
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return 0;
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}
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