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Add reference counted strings

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This commit is contained in:
Andreas Öman 2007-08-18 12:04:17 +00:00
parent cab91f9ccf
commit a24ed9d96d
1 changed files with 63 additions and 0 deletions
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refstr.h Normal file
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/*
* tvheadend
* Copyright (C) 2007 Andreas Öman
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef REFSTR_H_
#define REFSTR_H_
#include <string.h>
typedef struct refstr {
unsigned int refcnt;
char str[0];
} refstr_t;
extern inline refstr_t *
refstr_alloc(const char *str)
{
int l = strlen(str);
refstr_t *r = malloc(sizeof(refstr_t) + l + 1);
memcpy(r->str, str, l + 1);
r->refcnt = 1;
return r;
}
extern inline const char *
refstr_get(refstr_t *r)
{
return r->str;
}
extern inline void
refstr_free(refstr_t *r)
{
if(r != NULL && r->refcnt > 1)
r->refcnt--;
else
free(r);
}
extern inline refstr_t *
refstr_dup(refstr_t *r)
{
if(r != NULL) r->refcnt++;
return r;
}
#endif /* REFSTR_H_ */