WebSVN – HelenOS – Diff – //branches/tracing/kernel/generic/src/mm/as.c



            node =
                list_get_instance(area->used_space.leaf_head.prev,
                btree_node_t, leaf_link);
            if ((cond = (bool) node->keys)) {
                uintptr_t b = node->key[node->keys - 1];
                size_t c =
                    (size_t) node->value[node->keys - 1];
                unsigned int i = 0;
           
                if (overlaps(b, c * PAGE_SIZE, area->base,
                    pages * PAGE_SIZE)) {
                   

        unsigned int i;
       
        node = list_get_instance(cur, btree_node_t, leaf_link);
        for (i = 0; i < node->keys; i++) {
            uintptr_t b = node->key[i];
            size_t j;
            pte_t *pte;
           
            for (j = 0; j < (size_t) node->value[i]; j++) {
                page_table_lock(as, false);
                pte = page_mapping_find(as, b + j * PAGE_SIZE);
                ASSERT(pte && PTE_VALID(pte) &&
                    PTE_PRESENT(pte));
                if (area->backend &&

    uintptr_t base;
    link_t *cur;
    ipl_t ipl;
    int page_flags;
    uintptr_t *old_frame;
    size_t frame_idx;
    size_t used_pages;
   
    /* Flags for the new memory mapping */
    page_flags = area_flags_to_page_flags(flags);
 
    ipl = interrupts_disable();

        btree_node_t *node;
        unsigned int i;
       
        node = list_get_instance(cur, btree_node_t, leaf_link);
        for (i = 0; i < node->keys; i++) {
            used_pages += (size_t) node->value[i];
        }
    }
 
    /* An array for storing frame numbers */
    old_frame = malloc(used_pages * sizeof(uintptr_t), 0);

        unsigned int i;
       
        node = list_get_instance(cur, btree_node_t, leaf_link);
        for (i = 0; i < node->keys; i++) {
            uintptr_t b = node->key[i];
            size_t j;
            pte_t *pte;
           
            for (j = 0; j < (size_t) node->value[i]; j++) {
                page_table_lock(as, false);
                pte = page_mapping_find(as, b + j * PAGE_SIZE);
                ASSERT(pte && PTE_VALID(pte) &&
                    PTE_PRESENT(pte));
                old_frame[frame_idx++] = PTE_GET_FRAME(pte);

        unsigned int i;
       
        node = list_get_instance(cur, btree_node_t, leaf_link);
        for (i = 0; i < node->keys; i++) {
            uintptr_t b = node->key[i];
            size_t j;
           
            for (j = 0; j < (size_t) node->value[i]; j++) {
                page_table_lock(as, false);
 
                /* Insert the new mapping */
                page_mapping_insert(as, b + j * PAGE_SIZE,
                    old_frame[frame_idx++], page_flags);

 * @param page      First page to be marked.
 * @param count     Number of page to be marked.
 *
 * @return      Zero on failure and non-zero on success.
 */
int used_space_insert(as_area_t *a, uintptr_t page, size_t count)
{
    btree_node_t *leaf, *node;
    size_t pages;
    unsigned int i;
 
    ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));
    ASSERT(count);
 
    pages = (size_t) btree_search(&a->used_space, page, &leaf);
    if (pages) {
        /*
         * We hit the beginning of some used space.
         */
        return 0;

 
    node = btree_leaf_node_left_neighbour(&a->used_space, leaf);
    if (node) {
        uintptr_t left_pg = node->key[node->keys - 1];
        uintptr_t right_pg = leaf->key[0];
        size_t left_cnt = (size_t) node->value[node->keys - 1];
        size_t right_cnt = (size_t) leaf->value[0];
       
        /*
         * Examine the possibility that the interval fits
         * somewhere between the rightmost interval of
         * the left neigbour and the first interval of the leaf.

                leaf);
            return 1;
        }
    } else if (page < leaf->key[0]) {
        uintptr_t right_pg = leaf->key[0];
        size_t right_cnt = (size_t) leaf->value[0];
   
        /*
         * Investigate the border case in which the left neighbour does
         * not exist but the interval fits from the left.
         */

 
    node = btree_leaf_node_right_neighbour(&a->used_space, leaf);
    if (node) {
        uintptr_t left_pg = leaf->key[leaf->keys - 1];
        uintptr_t right_pg = node->key[0];
        size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
        size_t right_cnt = (size_t) node->value[0];
       
        /*
         * Examine the possibility that the interval fits
         * somewhere between the leftmost interval of
         * the right neigbour and the last interval of the leaf.

                leaf);
            return 1;
        }
    } else if (page >= leaf->key[leaf->keys - 1]) {
        uintptr_t left_pg = leaf->key[leaf->keys - 1];
        size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
   
        /*
         * Investigate the border case in which the right neighbour
         * does not exist but the interval fits from the right.
         */

     */
    for (i = 1; i < leaf->keys; i++) {
        if (page < leaf->key[i]) {
            uintptr_t left_pg = leaf->key[i - 1];
            uintptr_t right_pg = leaf->key[i];
            size_t left_cnt = (size_t) leaf->value[i - 1];
            size_t right_cnt = (size_t) leaf->value[i];
 
            /*
             * The interval fits between left_pg and right_pg.
             */
 

                return 1;
            }
        }
    }
 
    panic("Inconsistency detected while adding %" PRIs " pages of used "
        "space at %p.", count, page);
}
 
/** Mark portion of address space area as unused.
 *

 * @param page      First page to be marked.
 * @param count     Number of page to be marked.
 *
 * @return      Zero on failure and non-zero on success.
 */
int used_space_remove(as_area_t *a, uintptr_t page, size_t count)
{
    btree_node_t *leaf, *node;
    size_t pages;
    unsigned int i;
 
    ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));
    ASSERT(count);
 
    pages = (size_t) btree_search(&a->used_space, page, &leaf);
    if (pages) {
        /*
         * We are lucky, page is the beginning of some interval.
         */
        if (count > pages) {

    }
 
    node = btree_leaf_node_left_neighbour(&a->used_space, leaf);
    if (node && page < leaf->key[0]) {
        uintptr_t left_pg = node->key[node->keys - 1];
        size_t left_cnt = (size_t) node->value[node->keys - 1];
 
        if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,
            count * PAGE_SIZE)) {
            if (page + count * PAGE_SIZE ==
                left_pg + left_cnt * PAGE_SIZE) {

                 */
                node->value[node->keys - 1] -= count;
                return 1;
            } else if (page + count * PAGE_SIZE <
                left_pg + left_cnt*PAGE_SIZE) {
                size_t new_cnt;
               
                /*
                 * The interval is contained in the rightmost
                 * interval of the left neighbour but its
                 * removal requires both updating the size of

        return 0;
    }
   
    if (page > leaf->key[leaf->keys - 1]) {
        uintptr_t left_pg = leaf->key[leaf->keys - 1];
        size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
 
        if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,
            count * PAGE_SIZE)) {
            if (page + count * PAGE_SIZE ==
                left_pg + left_cnt * PAGE_SIZE) {

                 */
                leaf->value[leaf->keys - 1] -= count;
                return 1;
            } else if (page + count * PAGE_SIZE < left_pg +
                left_cnt * PAGE_SIZE) {
                size_t new_cnt;
               
                /*
                 * The interval is contained in the rightmost
                 * interval of the leaf but its removal
                 * requires both updating the size of the

     * Now the interval can be only between intervals of the leaf.
     */
    for (i = 1; i < leaf->keys - 1; i++) {
        if (page < leaf->key[i]) {
            uintptr_t left_pg = leaf->key[i - 1];
            size_t left_cnt = (size_t) leaf->value[i - 1];
 
            /*
             * Now the interval is between intervals corresponding
             * to (i - 1) and i.
             */

                     */
                    leaf->value[i - 1] -= count;
                    return 1;
                } else if (page + count * PAGE_SIZE <
                    left_pg + left_cnt * PAGE_SIZE) {
                    size_t new_cnt;
               
                    /*
                     * The interval is contained in the
                     * interval (i - 1) of the leaf but its
                     * removal requires both updating the

            return 0;
        }
    }
 
error:
    panic("Inconsistency detected while removing %" PRIs " pages of used "
        "space from %p.", count, page);
}
 
/** Remove reference to address space area share info.
 *

        unsigned int i;
        for (i = 0; i < node->keys; i++) {
            as_area_t *area = node->value[i];
       
            mutex_lock(&area->lock);
            printf("as_area: %p, base=%p, pages=%" PRIs
                " (%p - %p)\n", area, area->base, area->pages,
                area->base, area->base + FRAMES2SIZE(area->pages));
            mutex_unlock(&area->lock);
        }
    }

Rev 4377	Rev 4692
Line 415...	Line 415...
415	node =	415	node =
416	list_get_instance(area->used_space.leaf_head.prev,	416	list_get_instance(area->used_space.leaf_head.prev,
417	btree_node_t, leaf_link);	417	btree_node_t, leaf_link);
418	if ((cond = (bool) node->keys)) {	418	if ((cond = (bool) node->keys)) {
419	uintptr_t b = node->key[node->keys - 1];	419	uintptr_t b = node->key[node->keys - 1];
420	count_t c =	420	size_t c =
421	(count_t) node->value[node->keys - 1];	421	(size_t) node->value[node->keys - 1];
422	unsigned int i = 0;	422	unsigned int i = 0;
423		423
424	if (overlaps(b, c * PAGE_SIZE, area->base,	424	if (overlaps(b, c * PAGE_SIZE, area->base,
425	pages * PAGE_SIZE)) {	425	pages * PAGE_SIZE)) {
426		426
Line 552...	Line 552...
552	unsigned int i;	552	unsigned int i;
553		553
554	node = list_get_instance(cur, btree_node_t, leaf_link);	554	node = list_get_instance(cur, btree_node_t, leaf_link);
555	for (i = 0; i < node->keys; i++) {	555	for (i = 0; i < node->keys; i++) {
556	uintptr_t b = node->key[i];	556	uintptr_t b = node->key[i];
557	count_t j;	557	size_t j;
558	pte_t *pte;	558	pte_t *pte;
559		559
560	for (j = 0; j < (count_t) node->value[i]; j++) {	560	for (j = 0; j < (size_t) node->value[i]; j++) {
561	page_table_lock(as, false);	561	page_table_lock(as, false);
562	pte = page_mapping_find(as, b + j * PAGE_SIZE);	562	pte = page_mapping_find(as, b + j * PAGE_SIZE);
563	ASSERT(pte && PTE_VALID(pte) &&	563	ASSERT(pte && PTE_VALID(pte) &&
564	PTE_PRESENT(pte));	564	PTE_PRESENT(pte));
565	if (area->backend &&	565	if (area->backend &&
Line 785...	Line 785...
785	uintptr_t base;	785	uintptr_t base;
786	link_t *cur;	786	link_t *cur;
787	ipl_t ipl;	787	ipl_t ipl;
788	int page_flags;	788	int page_flags;
789	uintptr_t *old_frame;	789	uintptr_t *old_frame;
790	index_t frame_idx;	790	size_t frame_idx;
791	count_t used_pages;	791	size_t used_pages;
792		792
793	/* Flags for the new memory mapping */	793	/* Flags for the new memory mapping */
794	page_flags = area_flags_to_page_flags(flags);	794	page_flags = area_flags_to_page_flags(flags);
795		795
796	ipl = interrupts_disable();	796	ipl = interrupts_disable();
Line 824...	Line 824...
824	btree_node_t *node;	824	btree_node_t *node;
825	unsigned int i;	825	unsigned int i;
826		826
827	node = list_get_instance(cur, btree_node_t, leaf_link);	827	node = list_get_instance(cur, btree_node_t, leaf_link);
828	for (i = 0; i < node->keys; i++) {	828	for (i = 0; i < node->keys; i++) {
829	used_pages += (count_t) node->value[i];	829	used_pages += (size_t) node->value[i];
830	}	830	}
831	}	831	}
832		832
833	/* An array for storing frame numbers */	833	/* An array for storing frame numbers */
834	old_frame = malloc(used_pages * sizeof(uintptr_t), 0);	834	old_frame = malloc(used_pages * sizeof(uintptr_t), 0);
Line 850...	Line 850...
850	unsigned int i;	850	unsigned int i;
851		851
852	node = list_get_instance(cur, btree_node_t, leaf_link);	852	node = list_get_instance(cur, btree_node_t, leaf_link);
853	for (i = 0; i < node->keys; i++) {	853	for (i = 0; i < node->keys; i++) {
854	uintptr_t b = node->key[i];	854	uintptr_t b = node->key[i];
855	count_t j;	855	size_t j;
856	pte_t *pte;	856	pte_t *pte;
857		857
858	for (j = 0; j < (count_t) node->value[i]; j++) {	858	for (j = 0; j < (size_t) node->value[i]; j++) {
859	page_table_lock(as, false);	859	page_table_lock(as, false);
860	pte = page_mapping_find(as, b + j * PAGE_SIZE);	860	pte = page_mapping_find(as, b + j * PAGE_SIZE);
861	ASSERT(pte && PTE_VALID(pte) &&	861	ASSERT(pte && PTE_VALID(pte) &&
862	PTE_PRESENT(pte));	862	PTE_PRESENT(pte));
863	old_frame[frame_idx++] = PTE_GET_FRAME(pte);	863	old_frame[frame_idx++] = PTE_GET_FRAME(pte);
Line 900...	Line 900...
900	unsigned int i;	900	unsigned int i;
901		901
902	node = list_get_instance(cur, btree_node_t, leaf_link);	902	node = list_get_instance(cur, btree_node_t, leaf_link);
903	for (i = 0; i < node->keys; i++) {	903	for (i = 0; i < node->keys; i++) {
904	uintptr_t b = node->key[i];	904	uintptr_t b = node->key[i];
905	count_t j;	905	size_t j;
906		906
907	for (j = 0; j < (count_t) node->value[i]; j++) {	907	for (j = 0; j < (size_t) node->value[i]; j++) {
908	page_table_lock(as, false);	908	page_table_lock(as, false);
909		909
910	/* Insert the new mapping */	910	/* Insert the new mapping */
911	page_mapping_insert(as, b + j * PAGE_SIZE,	911	page_mapping_insert(as, b + j * PAGE_SIZE,
912	old_frame[frame_idx++], page_flags);	912	old_frame[frame_idx++], page_flags);
Line 1394...	Line 1394...
1394	* @param page First page to be marked.	1394	* @param page First page to be marked.
1395	* @param count Number of page to be marked.	1395	* @param count Number of page to be marked.
1396	*	1396	*
1397	* @return Zero on failure and non-zero on success.	1397	* @return Zero on failure and non-zero on success.
1398	*/	1398	*/
1399	int used_space_insert(as_area_t *a, uintptr_t page, count_t count)	1399	int used_space_insert(as_area_t *a, uintptr_t page, size_t count)
1400	{	1400	{
1401	btree_node_t leaf, node;	1401	btree_node_t leaf, node;
1402	count_t pages;	1402	size_t pages;
1403	unsigned int i;	1403	unsigned int i;
1404		1404
1405	ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));	1405	ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));
1406	ASSERT(count);	1406	ASSERT(count);
1407		1407
1408	pages = (count_t) btree_search(&a->used_space, page, &leaf);	1408	pages = (size_t) btree_search(&a->used_space, page, &leaf);
1409	if (pages) {	1409	if (pages) {
1410	/*	1410	/*
1411	* We hit the beginning of some used space.	1411	* We hit the beginning of some used space.
1412	*/	1412	*/
1413	return 0;	1413	return 0;
Line 1420...	Line 1420...
1420		1420
1421	node = btree_leaf_node_left_neighbour(&a->used_space, leaf);	1421	node = btree_leaf_node_left_neighbour(&a->used_space, leaf);
1422	if (node) {	1422	if (node) {
1423	uintptr_t left_pg = node->key[node->keys - 1];	1423	uintptr_t left_pg = node->key[node->keys - 1];
1424	uintptr_t right_pg = leaf->key[0];	1424	uintptr_t right_pg = leaf->key[0];
1425	count_t left_cnt = (count_t) node->value[node->keys - 1];	1425	size_t left_cnt = (size_t) node->value[node->keys - 1];
1426	count_t right_cnt = (count_t) leaf->value[0];	1426	size_t right_cnt = (size_t) leaf->value[0];
1427		1427
1428	/*	1428	/*
1429	* Examine the possibility that the interval fits	1429	* Examine the possibility that the interval fits
1430	* somewhere between the rightmost interval of	1430	* somewhere between the rightmost interval of
1431	* the left neigbour and the first interval of the leaf.	1431	* the left neigbour and the first interval of the leaf.
Line 1475...	Line 1475...
1475	leaf);	1475	leaf);
1476	return 1;	1476	return 1;
1477	}	1477	}
1478	} else if (page < leaf->key[0]) {	1478	} else if (page < leaf->key[0]) {
1479	uintptr_t right_pg = leaf->key[0];	1479	uintptr_t right_pg = leaf->key[0];
1480	count_t right_cnt = (count_t) leaf->value[0];	1480	size_t right_cnt = (size_t) leaf->value[0];
1481		1481
1482	/*	1482	/*
1483	* Investigate the border case in which the left neighbour does	1483	* Investigate the border case in which the left neighbour does
1484	* not exist but the interval fits from the left.	1484	* not exist but the interval fits from the left.
1485	*/	1485	*/
Line 1510...	Line 1510...
1510		1510
1511	node = btree_leaf_node_right_neighbour(&a->used_space, leaf);	1511	node = btree_leaf_node_right_neighbour(&a->used_space, leaf);
1512	if (node) {	1512	if (node) {
1513	uintptr_t left_pg = leaf->key[leaf->keys - 1];	1513	uintptr_t left_pg = leaf->key[leaf->keys - 1];
1514	uintptr_t right_pg = node->key[0];	1514	uintptr_t right_pg = node->key[0];
1515	count_t left_cnt = (count_t) leaf->value[leaf->keys - 1];	1515	size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
1516	count_t right_cnt = (count_t) node->value[0];	1516	size_t right_cnt = (size_t) node->value[0];
1517		1517
1518	/*	1518	/*
1519	* Examine the possibility that the interval fits	1519	* Examine the possibility that the interval fits
1520	* somewhere between the leftmost interval of	1520	* somewhere between the leftmost interval of
1521	* the right neigbour and the last interval of the leaf.	1521	* the right neigbour and the last interval of the leaf.
Line 1565...	Line 1565...
1565	leaf);	1565	leaf);
1566	return 1;	1566	return 1;
1567	}	1567	}
1568	} else if (page >= leaf->key[leaf->keys - 1]) {	1568	} else if (page >= leaf->key[leaf->keys - 1]) {
1569	uintptr_t left_pg = leaf->key[leaf->keys - 1];	1569	uintptr_t left_pg = leaf->key[leaf->keys - 1];
1570	count_t left_cnt = (count_t) leaf->value[leaf->keys - 1];	1570	size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
1571		1571
1572	/*	1572	/*
1573	* Investigate the border case in which the right neighbour	1573	* Investigate the border case in which the right neighbour
1574	* does not exist but the interval fits from the right.	1574	* does not exist but the interval fits from the right.
1575	*/	1575	*/
Line 1603...	Line 1603...
1603	*/	1603	*/
1604	for (i = 1; i < leaf->keys; i++) {	1604	for (i = 1; i < leaf->keys; i++) {
1605	if (page < leaf->key[i]) {	1605	if (page < leaf->key[i]) {
1606	uintptr_t left_pg = leaf->key[i - 1];	1606	uintptr_t left_pg = leaf->key[i - 1];
1607	uintptr_t right_pg = leaf->key[i];	1607	uintptr_t right_pg = leaf->key[i];
1608	count_t left_cnt = (count_t) leaf->value[i - 1];	1608	size_t left_cnt = (size_t) leaf->value[i - 1];
1609	count_t right_cnt = (count_t) leaf->value[i];	1609	size_t right_cnt = (size_t) leaf->value[i];
1610		1610
1611	/*	1611	/*
1612	* The interval fits between left_pg and right_pg.	1612	* The interval fits between left_pg and right_pg.
1613	*/	1613	*/
1614		1614
Line 1662...	Line 1662...
1662	return 1;	1662	return 1;
1663	}	1663	}
1664	}	1664	}
1665	}	1665	}
1666		1666
1667	panic("Inconsistency detected while adding %" PRIc " pages of used "	1667	panic("Inconsistency detected while adding %" PRIs " pages of used "
1668	"space at %p.", count, page);	1668	"space at %p.", count, page);
1669	}	1669	}
1670		1670
1671	/** Mark portion of address space area as unused.	1671	/** Mark portion of address space area as unused.
1672	*	1672	*
Line 1676...	Line 1676...
1676	* @param page First page to be marked.	1676	* @param page First page to be marked.
1677	* @param count Number of page to be marked.	1677	* @param count Number of page to be marked.
1678	*	1678	*
1679	* @return Zero on failure and non-zero on success.	1679	* @return Zero on failure and non-zero on success.
1680	*/	1680	*/
1681	int used_space_remove(as_area_t *a, uintptr_t page, count_t count)	1681	int used_space_remove(as_area_t *a, uintptr_t page, size_t count)
1682	{	1682	{
1683	btree_node_t leaf, node;	1683	btree_node_t leaf, node;
1684	count_t pages;	1684	size_t pages;
1685	unsigned int i;	1685	unsigned int i;
1686		1686
1687	ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));	1687	ASSERT(page == ALIGN_DOWN(page, PAGE_SIZE));
1688	ASSERT(count);	1688	ASSERT(count);
1689		1689
1690	pages = (count_t) btree_search(&a->used_space, page, &leaf);	1690	pages = (size_t) btree_search(&a->used_space, page, &leaf);
1691	if (pages) {	1691	if (pages) {
1692	/*	1692	/*
1693	* We are lucky, page is the beginning of some interval.	1693	* We are lucky, page is the beginning of some interval.
1694	*/	1694	*/
1695	if (count > pages) {	1695	if (count > pages) {
Line 1714...	Line 1714...
1714	}	1714	}
1715		1715
1716	node = btree_leaf_node_left_neighbour(&a->used_space, leaf);	1716	node = btree_leaf_node_left_neighbour(&a->used_space, leaf);
1717	if (node && page < leaf->key[0]) {	1717	if (node && page < leaf->key[0]) {
1718	uintptr_t left_pg = node->key[node->keys - 1];	1718	uintptr_t left_pg = node->key[node->keys - 1];
1719	count_t left_cnt = (count_t) node->value[node->keys - 1];	1719	size_t left_cnt = (size_t) node->value[node->keys - 1];
1720		1720
1721	if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,	1721	if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,
1722	count * PAGE_SIZE)) {	1722	count * PAGE_SIZE)) {
1723	if (page + count * PAGE_SIZE ==	1723	if (page + count * PAGE_SIZE ==
1724	left_pg + left_cnt * PAGE_SIZE) {	1724	left_pg + left_cnt * PAGE_SIZE) {
Line 1730...	Line 1730...
1730	*/	1730	*/
1731	node->value[node->keys - 1] -= count;	1731	node->value[node->keys - 1] -= count;
1732	return 1;	1732	return 1;
1733	} else if (page + count * PAGE_SIZE <	1733	} else if (page + count * PAGE_SIZE <
1734	left_pg + left_cnt*PAGE_SIZE) {	1734	left_pg + left_cnt*PAGE_SIZE) {
1735	count_t new_cnt;	1735	size_t new_cnt;
1736		1736
1737	/*	1737	/*
1738	* The interval is contained in the rightmost	1738	* The interval is contained in the rightmost
1739	* interval of the left neighbour but its	1739	* interval of the left neighbour but its
1740	* removal requires both updating the size of	1740	* removal requires both updating the size of
Line 1754...	Line 1754...
1754	return 0;	1754	return 0;
1755	}	1755	}
1756		1756
1757	if (page > leaf->key[leaf->keys - 1]) {	1757	if (page > leaf->key[leaf->keys - 1]) {
1758	uintptr_t left_pg = leaf->key[leaf->keys - 1];	1758	uintptr_t left_pg = leaf->key[leaf->keys - 1];
1759	count_t left_cnt = (count_t) leaf->value[leaf->keys - 1];	1759	size_t left_cnt = (size_t) leaf->value[leaf->keys - 1];
1760		1760
1761	if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,	1761	if (overlaps(left_pg, left_cnt * PAGE_SIZE, page,
1762	count * PAGE_SIZE)) {	1762	count * PAGE_SIZE)) {
1763	if (page + count * PAGE_SIZE ==	1763	if (page + count * PAGE_SIZE ==
1764	left_pg + left_cnt * PAGE_SIZE) {	1764	left_pg + left_cnt * PAGE_SIZE) {
Line 1769...	Line 1769...
1769	*/	1769	*/
1770	leaf->value[leaf->keys - 1] -= count;	1770	leaf->value[leaf->keys - 1] -= count;
1771	return 1;	1771	return 1;
1772	} else if (page + count * PAGE_SIZE < left_pg +	1772	} else if (page + count * PAGE_SIZE < left_pg +
1773	left_cnt * PAGE_SIZE) {	1773	left_cnt * PAGE_SIZE) {
1774	count_t new_cnt;	1774	size_t new_cnt;
1775		1775
1776	/*	1776	/*
1777	* The interval is contained in the rightmost	1777	* The interval is contained in the rightmost
1778	* interval of the leaf but its removal	1778	* interval of the leaf but its removal
1779	* requires both updating the size of the	1779	* requires both updating the size of the
Line 1796...	Line 1796...
1796	* Now the interval can be only between intervals of the leaf.	1796	* Now the interval can be only between intervals of the leaf.
1797	*/	1797	*/
1798	for (i = 1; i < leaf->keys - 1; i++) {	1798	for (i = 1; i < leaf->keys - 1; i++) {
1799	if (page < leaf->key[i]) {	1799	if (page < leaf->key[i]) {
1800	uintptr_t left_pg = leaf->key[i - 1];	1800	uintptr_t left_pg = leaf->key[i - 1];
1801	count_t left_cnt = (count_t) leaf->value[i - 1];	1801	size_t left_cnt = (size_t) leaf->value[i - 1];
1802		1802
1803	/*	1803	/*
1804	* Now the interval is between intervals corresponding	1804	* Now the interval is between intervals corresponding
1805	* to (i - 1) and i.	1805	* to (i - 1) and i.
1806	*/	1806	*/
Line 1816...	Line 1816...
1816	*/	1816	*/
1817	leaf->value[i - 1] -= count;	1817	leaf->value[i - 1] -= count;
1818	return 1;	1818	return 1;
1819	} else if (page + count * PAGE_SIZE <	1819	} else if (page + count * PAGE_SIZE <
1820	left_pg + left_cnt * PAGE_SIZE) {	1820	left_pg + left_cnt * PAGE_SIZE) {
1821	count_t new_cnt;	1821	size_t new_cnt;
1822		1822
1823	/*	1823	/*
1824	* The interval is contained in the	1824	* The interval is contained in the
1825	* interval (i - 1) of the leaf but its	1825	* interval (i - 1) of the leaf but its
1826	* removal requires both updating the	1826	* removal requires both updating the
Line 1841...	Line 1841...
1841	return 0;	1841	return 0;
1842	}	1842	}
1843	}	1843	}
1844		1844
1845	error:	1845	error:
1846	panic("Inconsistency detected while removing %" PRIc " pages of used "	1846	panic("Inconsistency detected while removing %" PRIs " pages of used "
1847	"space from %p.", count, page);	1847	"space from %p.", count, page);
1848	}	1848	}
1849		1849
1850	/** Remove reference to address space area share info.	1850	/** Remove reference to address space area share info.
1851	*	1851	*
Line 1940...	Line 1940...
1940	unsigned int i;	1940	unsigned int i;
1941	for (i = 0; i < node->keys; i++) {	1941	for (i = 0; i < node->keys; i++) {
1942	as_area_t *area = node->value[i];	1942	as_area_t *area = node->value[i];
1943		1943
1944	mutex_lock(&area->lock);	1944	mutex_lock(&area->lock);
1945	printf("as_area: %p, base=%p, pages=%" PRIc	1945	printf("as_area: %p, base=%p, pages=%" PRIs
1946	" (%p - %p)\n", area, area->base, area->pages,	1946	" (%p - %p)\n", area, area->base, area->pages,
1947	area->base, area->base + FRAMES2SIZE(area->pages));	1947	area->base, area->base + FRAMES2SIZE(area->pages));
1948	mutex_unlock(&area->lock);	1948	mutex_unlock(&area->lock);
1949	}	1949	}
1950	}	1950	}

Subversion Repositories HelenOS

(root)//branches/tracing/kernel/generic/src/mm/as.c – Rev 4377 → 4692