struct vgz *
VGZ_NewGzip(struct vsl_log *vsl, const char *id)
{
struct vgz *vg;
int i;
vg = vgz_alloc_vgz(vsl, id);
vg->dir = VGZ_GZ;
VSC_C_main->n_gzip++;
/*
* From zconf.h:
*
* mem_needed = "a few kb"
* + (1 << (windowBits+2))
* + (1 << (memLevel+9))
*
* windowBits [8..15] (-> 1K..128K)
* memLevel [1..9] (-> 1K->256K)
*/
i = deflateInit2(&vg->vz,
cache_param->gzip_level, /* Level */
Z_DEFLATED, /* Method */
16 + 15, /* Window bits (16=gzip) */
cache_param->gzip_memlevel, /* memLevel */
Z_DEFAULT_STRATEGY);
assert(Z_OK == i);
return (vg);
}
struct vgz *
VGZ_NewGzip(struct vsl_log *vsl, const char *id)
{
struct vgz *vg;
int i;
vg = vgz_alloc_vgz(vsl, id);
vg->dir = VGZ_GZ;
VSC_C_main->n_gzip++;
/*
* From zconf.h:
*
* mem_needed = "a few kb"
* + (1 << (windowBits+2))
* + (1 << (memLevel+9))
*
* windowBits [8..15] (-> 1K..128K)
* memLevel [1..9] (-> 1K->256K)
*
* XXX: They probably needs to be params...
*
* XXX: It may be more efficent to malloc them, rather than have
* XXX: too many worker threads grow the stacks.
*/
i = deflateInit2(&vg->vz,
cache_param->gzip_level, /* Level */
Z_DEFLATED, /* Method */
16 + 15, /* Window bits (16=gzip) */
cache_param->gzip_memlevel, /* memLevel */
Z_DEFAULT_STRATEGY);
assert(Z_OK == i);
return (vg);
}
static struct vgz *
VGZ_NewUngzip(struct vsl_log *vsl, const char *id)
{
struct vgz *vg;
vg = vgz_alloc_vgz(vsl, id);
vg->dir = VGZ_UN;
VSC_C_main->n_gunzip++;
/*
* Max memory usage according to zonf.h:
* mem_needed = "a few kb" + (1 << (windowBits))
* Since we don't control windowBits, we have to assume
* it is 15, so 34-35KB or so.
*/
assert(Z_OK == inflateInit2(&vg->vz, 31));
return (vg);
}