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IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. GOVERNMENT USE: If you are acquiring this software on behalf of the U.S. government, the Government shall have only "Restricted Rights" in the software and related documentation as defined in the Federal Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you are acquiring the software on behalf of the Department of Defense, the software shall be classified as "Commercial Computer Software" and the Government shall have only "Restricted Rights" as defined in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the foregoing, the authors grant the U.S. Government and others acting in its behalf permission to use and distribute the software in accordance with the terms specified in this license. ---*/ #include #include #include "../check_includes.h" #include #include #include #include #include #include #define LOG_NAME "check_bTree.log" #define NUM_ENTRIES 100000 /** @test */ void testFunctions(); int SimpleExample(); START_TEST(bTreeTest) { Tinit(); testFunctions(); SimpleExample(); // printf("\n end of practice run\n"); Tdeinit(); } END_TEST /* This only takes in a page that is already initialized as a fixed page. and has been initialized as a BTree Node, which involves placing an index to tell how many entries are currently valid. For now it will just return false if you try to add something to it when it is already full. This method doesn't use the Slot value of rid! We make a copy of rid_caller so that the caller's copy doesn't change. */ int insert(int xid, Page* p, recordid rid_caller, int valueIn){ printf ("\nbegin insert\n"); int DEBUG = 0; int DEBUGERROR = 1; int DEBUGERROR2 = 0; int DEBUGSTATEMENTS = 1; int DEBUGMALLOC = 1; // 1 makes it malloc the space //printf("\npage->id = %d\n", p->id); // make a copy of the rid - so we don't effect the caller's copy recordid rid = rid_caller; // if DEBUGERROR ==1 this causes a seg fault below! if (DEBUGERROR) {printf("\n***page->id = %lld\n", p->id);} printf("\n***rid.page = %lld\n\n", (long long)rid.page); if(DEBUG) {printf("\nrid.page = %lld\n", (long long)rid.page);} if(DEBUG) {printf("\nrid.slot = %lld\n", (long long)rid.slot);} // Figure out how many entries are in the node rid.slot = 0; // need to get the variable in slot 0 byte * countBuff;/// AHHH - i wasn't mallocing space for this! if(DEBUGMALLOC ) {countBuff = (byte *) malloc (sizeof(int));} if (DEBUGSTATEMENTS) {printf("\nDebug1\n");} stasis_record_read(xid, p, rid, countBuff); // read the value of count from slot 0 if (DEBUGSTATEMENTS) {printf("\nDebug2\n");} int * countInt = (int *) countBuff; // cast it to an int * // set rid.slot to be the max slot entry used. rid.slot = *countInt; printf("\nrid2slot = %d\n", rid.slot); // *recordcount_ptr(p) = last accessible index on the page. int max_index = stasis_fixed_records_per_page(rid.size); // rcs made this change. // int max_index = *recordcount_ptr(p); // recordcount_ptr is the number of slots currently allocated on the page. // but this code seems to do it's own allocation(?) //THESE LINES WERE CAUSING A SEGFAULT! ******************************************* if (DEBUGERROR2) {printf("\nx = %d\n", max_index);} // This causes a segfault after Debug2 // HACK! TO FIX THE ABOVE PROBLEM! // max_index = 1021; // assert that max_index is greater than our record of how many // entries we currently have on the page. assert(max_index>rid.slot); // check to see if we have room to add the entry. if (rid.slot == max_index){ // we can't add any more entries to this node return -1; } // the default location to put the new value is location 1. int insertLocation = 1; // Iterating DOWN through the slots. Stop when we reach 0. // Will also break out of the while loop if we've found where // to insert the new value. while ( (rid.slot >= 1) && (insertLocation == 1)){ // TODO: JuSt haven't filled in the code here yet... insertLocation =2; } // convert the input valueIn into a byte array // byte * valueInBuff = (byte *) & valueIn; // get the rid ready to write to the insertLocation (determined above) rid.slot = insertLocation; // fixedWrite(p, rid, valueInBuff); // page/fixed.c:58: checkRid: Assertion `page->id == rid.page' failed. printf("\n***page->id = %lld\n", p->id); printf("\n***rid.page = %lld\n", (long long)rid.page); return 0; } /* This takes a page that is already initialized and a corresponding rid and initalizes the count value for it to be a BTreeNode. Just puts the value 0 in the first index of the page. */ void initializeNewBTreeNode(int xid, Page* p, recordid rid){ // need access to the first slot rid.slot = 0; // prepare the value to go into the first slot int countInt = 0; byte * countBuff = (byte *) & countInt; // write the count out stasis_record_write(xid, p, 1, rid, countBuff); } void testFunctions(){ printf("testing functions"); // getting things ready int xid = Tbegin(); recordid rid1 = TfixedPageAlloc(xid, sizeof(int)); // this does the initialize int pageid1 = rid1.page; Page * p1 = loadPage(xid, pageid1); // calling functions writelock(p1->rwlatch,0); initializeNewBTreeNode(xid, p1, rid1); insert(xid, p1, rid1, 3); unlock(p1->rwlatch); // cleaning up releasePage(p1); Tcommit(xid); } int SimpleExample(){ int DEBUGP = 0; // int DEBUGT = 0; // int DEBUGA = 0; int xid = Tbegin(); /* Where to find stuff * **************************** * TpageAlloc -> stasis/src/stasis/operations/pageOperations.c * TfixedPageAlloc -> stasis/src/stasis/operations/pageOperations.c * fixedPageInitailze -> stasis/src/stasis/page/fixed.c */ recordid rid1 = TfixedPageAlloc(xid, sizeof(int)); // this does the initialize int pageid1 = rid1.page; Page * p1 = loadPage(xid, pageid1); writelock(p1->rwlatch, 0); if(DEBUGP) { printf("\n**** page->id = %lld\n", p1->id);} /* check consistency between rid & page's values * for number of slots and record size */ // assert (rid1.slot == fixedPageCount(p1)); // assert (rid1.size == fixedPageRecordSize(p1)); assert (p1->id == rid1.page); /* check to make sure page is recorded as a FIXED_PAGE */ assert( *stasis_page_type_ptr(p1) == FIXED_PAGE); if (DEBUGP) { printf("\n%lld\n", (long long)rid1.page); } byte * b1 = (byte *) malloc (sizeof (int)); byte * b2 = (byte *) malloc (sizeof (int)); byte * b3 = (byte *) malloc (sizeof (int)); // int x = *recordcount_ptr(p1); int x = 42; // rcs - recordcount_ptr is no longer exposed here... int y = rid1.slot; int z = 256; b1 = (byte *) & x; b2 = (byte *) & y; b3 = (byte *) & z; int * x1 = (int *) b1; if (DEBUGP) { printf("\nx = %d\n", x);} if (DEBUGP) { printf("\nb1 = %d\n", *b1);} if (DEBUGP) { printf("\nx1 = %d\n", *x1);} if (DEBUGP) { printf("\ny = %d\n", y);} if (DEBUGP) { printf("\nb2 = %d\n", *b2);} if (DEBUGP) { printf("\nz = %d\n", z);} if (DEBUGP) { printf("\nb3 = %d\n", *b3);} recordid rid2 = rid1; rid2.slot = 0; // @todo This is a messy way to do this... stasis_record_write(xid, p1, 1, rid2, b1); stasis_record_read(xid, p1, rid2, b2); if (DEBUGP) { printf("\nb2** = %d\n",*((int *) b2));} // initializeNewBTreeNode(p1, rid1); unlock(p1->rwlatch); releasePage(p1); Tcommit(xid); return 0; } /** @test */ #define NUM_ENTRIES_XACT 10000 Suite * check_suite(void) { Suite *s = suite_create("bTree"); /* Begin a new test */ TCase *tc = tcase_create("simple"); tcase_set_timeout(tc, 0); // disable timeouts if test takes more than 2 sec - it would get killed /* Sub tests are added, one per line, here */ tcase_add_test(tc, bTreeTest); // tcase_add_test(tc, simpleLinearHashTest); // put back in if playing with hashtable /* --------------------------------------------- */ tcase_add_checked_fixture(tc, setup, teardown);// leave stuff below here. suite_add_tcase(s, tc); return s; } #include "../check_setup.h"