void
WRW_Reserve(struct worker *wrk, int *fd, struct vsl_log *vsl, double t0)
{
struct wrw *wrw;
unsigned u;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
AZ(wrk->wrw);
wrw = (void*)WS_Alloc(wrk->aws, sizeof *wrw);
AN(wrw);
memset(wrw, 0, sizeof *wrw);
wrw->magic = WRW_MAGIC;
u = WS_Reserve(wrk->aws, 0);
u = PRNDDN(u);
u /= sizeof(struct iovec);
if (u > IOV_MAX)
u = IOV_MAX;
AN(u);
wrw->iov = (void*)PRNDUP(wrk->aws->f);
wrw->siov = u;
wrw->ciov = u;
wrw->werr = 0;
wrw->liov = 0;
wrw->niov = 0;
wrw->wfd = fd;
wrw->t0 = t0;
wrw->vsl = vsl;
wrk->wrw = wrw;
}
void
WS_Init(struct ws *ws, const char *id, void *space, unsigned len)
{
DSL(DBG_WORKSPACE, 0,
"WS_Init(%p, \"%s\", %p, %u)", ws, id, space, len);
assert(space != NULL);
INIT_OBJ(ws, WS_MAGIC);
ws->s = space;
assert(PAOK(space));
len = PRNDDN(len - 1);
ws->e = ws->s + len;
*ws->e = 0x15;
ws->f = ws->s;
assert(id[0] & 0x40);
assert(strlen(id) < sizeof ws->id);
strcpy(ws->id, id);
WS_Assert(ws);
}
unsigned
WS_Reserve(struct ws *ws, unsigned bytes)
{
unsigned b2;
WS_Assert(ws);
assert(ws->r == NULL);
b2 = PRNDDN(ws->e - ws->f);
if (bytes != 0 && bytes < b2)
b2 = PRNDUP(bytes);
xxxassert(ws->f + b2 <= ws->e);
ws->r = ws->f + b2;
DSL(DBG_WORKSPACE, 0, "WS_Reserve(%p, %u/%u) = %u",
ws, b2, bytes, pdiff(ws->f, ws->r));
WS_Assert(ws);
return (pdiff(ws->f, ws->r));
}
void
V1L_Reserve(struct worker *wrk, struct ws *ws, int *fd, struct vsl_log *vsl,
double t0)
{
struct v1l *v1l;
unsigned u;
void *res;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
AZ(wrk->v1l);
if (WS_Overflowed(ws))
return;
res = WS_Snapshot(ws);
v1l = WS_Alloc(ws, sizeof *v1l);
if (v1l == NULL)
return;
INIT_OBJ(v1l, V1L_MAGIC);
v1l->ws = ws;
v1l->res = res;
u = WS_Reserve(ws, 0);
u = PRNDDN(u);
u /= sizeof(struct iovec);
if (u == 0) {
WS_Release(ws, 0);
WS_MarkOverflow(ws);
return;
} else if (u > IOV_MAX)
u = IOV_MAX;
v1l->iov = (void*)PRNDUP(ws->f);
v1l->siov = u;
v1l->ciov = u;
v1l->werr = 0;
v1l->liov = 0;
v1l->niov = 0;
v1l->wfd = fd;
v1l->t0 = t0;
v1l->vsl = vsl;
wrk->v1l = v1l;
}
unsigned
WS_Reserve(struct ws *ws, unsigned bytes)
{
unsigned b2;
WS_Assert(ws);
assert(ws->r == NULL);
if (bytes == 0)
b2 = ws->e - ws->f;
else if (bytes > ws->e - ws->f)
b2 = ws->e - ws->f;
else
b2 = bytes;
b2 = PRNDDN(b2);
xxxassert(ws->f + b2 <= ws->e);
ws->r = ws->f + b2;
DSL(0x02, SLT_Debug, 0, "WS_Reserve(%p, %u/%u) = %u",
ws, b2, bytes, pdiff(ws->f, ws->r));
WS_Assert(ws);
return (pdiff(ws->f, ws->r));
}
