void
seminit(void)
{
int i, sz;
vaddr_t v;
mutex_init(&semlock, MUTEX_DEFAULT, IPL_NONE);
cv_init(&sem_realloc_cv, "semrealc");
sem_realloc_state = false;
semtot = 0;
sem_waiters = 0;
/* Allocate the wired memory for our structures */
sz = ALIGN(seminfo.semmni * sizeof(struct semid_ds)) +
ALIGN(seminfo.semmns * sizeof(struct __sem)) +
ALIGN(seminfo.semmni * sizeof(kcondvar_t)) +
ALIGN(seminfo.semmnu * seminfo.semusz);
sz = round_page(sz);
v = uvm_km_alloc(kernel_map, sz, 0, UVM_KMF_WIRED|UVM_KMF_ZERO);
if (v == 0)
panic("sysv_sem: cannot allocate memory");
sema = (void *)v;
sem = (void *)((uintptr_t)sema +
ALIGN(seminfo.semmni * sizeof(struct semid_ds)));
semcv = (void *)((uintptr_t)sem +
ALIGN(seminfo.semmns * sizeof(struct __sem)));
semu = (void *)((uintptr_t)semcv +
ALIGN(seminfo.semmni * sizeof(kcondvar_t)));
for (i = 0; i < seminfo.semmni; i++) {
sema[i]._sem_base = 0;
sema[i].sem_perm.mode = 0;
cv_init(&semcv[i], "semwait");
}
for (i = 0; i < seminfo.semmnu; i++) {
struct sem_undo *suptr = SEMU(semu, i);
suptr->un_proc = NULL;
}
semu_list = NULL;
exithook_establish(semexit, NULL);
sysvipcinit();
}
void
msginit(void)
{
int i, sz;
vaddr_t v;
/*
* msginfo.msgssz should be a power of two for efficiency reasons.
* It is also pretty silly if msginfo.msgssz is less than 8
* or greater than about 256 so ...
*/
i = 8;
while (i < 1024 && i != msginfo.msgssz)
i <<= 1;
if (i != msginfo.msgssz) {
panic("msginfo.msgssz = %d, not a small power of 2",
msginfo.msgssz);
}
if (msginfo.msgseg > 32767) {
panic("msginfo.msgseg = %d > 32767", msginfo.msgseg);
}
/* Allocate the wired memory for our structures */
sz = ALIGN(msginfo.msgmax) +
ALIGN(msginfo.msgseg * sizeof(struct msgmap)) +
ALIGN(msginfo.msgtql * sizeof(struct __msg)) +
ALIGN(msginfo.msgmni * sizeof(kmsq_t));
sz = round_page(sz);
v = uvm_km_alloc(kernel_map, sz, 0, UVM_KMF_WIRED|UVM_KMF_ZERO);
if (v == 0)
panic("sysv_msg: cannot allocate memory");
msgpool = (void *)v;
msgmaps = (void *)((uintptr_t)msgpool + ALIGN(msginfo.msgmax));
msghdrs = (void *)((uintptr_t)msgmaps +
ALIGN(msginfo.msgseg * sizeof(struct msgmap)));
msqs = (void *)((uintptr_t)msghdrs +
ALIGN(msginfo.msgtql * sizeof(struct __msg)));
for (i = 0; i < (msginfo.msgseg - 1); i++)
msgmaps[i].next = i + 1;
msgmaps[msginfo.msgseg - 1].next = -1;
free_msgmaps = 0;
nfree_msgmaps = msginfo.msgseg;
for (i = 0; i < (msginfo.msgtql - 1); i++) {
msghdrs[i].msg_type = 0;
msghdrs[i].msg_next = &msghdrs[i + 1];
}
i = msginfo.msgtql - 1;
msghdrs[i].msg_type = 0;
msghdrs[i].msg_next = NULL;
free_msghdrs = &msghdrs[0];
for (i = 0; i < msginfo.msgmni; i++) {
cv_init(&msqs[i].msq_cv, "msgwait");
/* Implies entry is available */
msqs[i].msq_u.msg_qbytes = 0;
/* Reset to a known value */
msqs[i].msq_u.msg_perm._seq = 0;
}
mutex_init(&msgmutex, MUTEX_DEFAULT, IPL_NONE);
cv_init(&msg_realloc_cv, "msgrealc");
msg_realloc_state = false;
sysvipcinit();
}
