empire/empserver
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

New struct empfile callback onresize

Browse source
This commit is contained in:
Markus Armbruster 2008-09-06 13:58:15 -04:00
parent a1f20efd02
commit f21cb48f69
3 changed files with 30 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

24
src/lib/common/file.c
View file

@ -156,6 +156,8 @@ ef_open(int type, int how, int nelt)
}
}
if (ep->onresize && ep->onresize(type) < 0)
return 0;
return 1;
}
@ -250,6 +252,8 @@ ef_close(int type)
ep->fd = -1;
}
ep->baseid = ep->cids = ep->fids = 0;
if (ep->onresize && ep->onresize(type) < 0)
retval = 0;
return retval;
}
@ -487,25 +491,27 @@ ef_write(int type, int id, void *from)
ep = &empfile[type];
if (CANT_HAPPEN((ep->flags & (EFF_MEM | EFF_PRIVATE)) == EFF_PRIVATE))
return 0;
if (CANT_HAPPEN((ep->flags & EFF_MEM) ? id >= ep->fids : id > ep->fids))
return 0; /* not implemented */
new_seqno(ep, from);
if (id >= ep->fids) {
/* write beyond end of file extends it, take note */
ep->fids = id + 1;
if (ep->onresize && ep->onresize(type) < 0)
return 0;
}
if (id >= ep->baseid && id < ep->baseid + ep->cids)
cachep = ep->cache + (id - ep->baseid) * ep->size;
else
cachep = NULL;
if (ep->prewrite)
ep->prewrite(id, cachep, from);
if (CANT_HAPPEN((ep->flags & EFF_MEM) ? id >= ep->fids : id > ep->fids))
return 0; /* not implemented */
new_seqno(ep, from);
if (ep->fd >= 0) {
if (do_write(ep, from, id, 1) < 0)
return 0;
}
if (cachep && cachep != from) /* update the cache if necessary */
memcpy(cachep, from, ep->size);
if (id >= ep->fids) {
/* write beyond end of file extends it, take note */
ep->fids = id + 1;
}
return 1;
}
@ -634,6 +640,8 @@ ef_extend(int type, int count)
}
}
ep->fids = id + count;
if (ep->onresize && ep->onresize(type) < 0)
return 0;
return 1;
}
@ -723,6 +731,8 @@ ef_truncate(int type, int count)
ep->cids = count - ep->baseid;
}
if (ep->onresize && ep->onresize(type) < 0)
return 0;
return 1;
}