/*
* Requires:
* None.
*
* Effects:
* Perform a minimal check of the heap for consistency.
*/
void
checkheap(bool verbose)
{
void *bp;
if (verbose)
printf("Heap (%p):\n", heap_listp);
if (GET_SIZE(HDRP(heap_listp)) != DSIZE ||
!GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = (void *)NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if (GET_SIZE(HDRP(bp)) != 0 || !GET_ALLOC(HDRP(bp)))
printf("Bad epilogue header\n");
in_heap(bp);
check_coalescing();
check_free_list();
check_free_blocks();
}
/*
* checkheap - functions with multiple checks
*/
int mm_checkheap(int verbose)
{
char *bp = heap_list_head;
if (verbose)
{
printf("Heap (%p):\n", heap_list_head);
//printf("Free List (%p):\n", free_list_head);
}
if ((GET_SIZE(HDRP(heap_header)) != HEADER_SIZE)
|| !GET_ALLOC(HDRP(heap_header)))
{
//printf("Bad prologue header\n");
//return 1;
}
checkblock(heap_list_head);
for (bp = heap_list_head; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp))
{
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp))))
{
printf("Bad epilogue header\n");
//return 1;
}
return 0;
}
//
// mm_checkheap - Check the heap for consistency
//
void mm_checkheap(int verbose)
{
//
// This provided implementation assumes you're using the structure
// of the sample solution in the text. If not, omit this code
// and provide your own mm_checkheap
//
void *bp = heap_listp;
if (verbose) {
printf("Heap (%p):\n", heap_listp);
}
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp))) {
printf("Bad prologue header\n");
}
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose) {
printblock(bp);
}
checkblock(bp);
}
if (verbose) {
printblock(bp);
}
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp)))) {
printf("Bad epilogue header\n");
}
}
/*
* Requires:
* None.
*
* Effects:
* Perform a minimal check of the heap for consistency.
*/
void
checkheap(bool verbose)
{
void *bp;
if (verbose)
printf("Heap (%p):\n", heap_listp);
if (GET_SIZE(HDRP(heap_listp)) != DSIZE)
printf("Bad prologue header: size\n");
if (!GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header: alloc\n");
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if (GET_SIZE(HDRP(bp)) != 0)
printf("Bad epilogue header: size\n");
if (!GET_ALLOC(HDRP(bp)))
printf("Bad epilogue header: alloc\n");
}
/*
* Requires:
* None.
*
* Effects:
* Perform a minimal check of the heap for consistency.
*/
void
checkheap(bool verbose)
{
void *bp;
if (verbose)
printf("Heap (%p):\n", heap_listp);
if (GET_SIZE(HDRP(heap_listp)) != DSIZE ||
!GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if (GET_SIZE(HDRP(bp)) != 0 || !GET_ALLOC(HDRP(bp)))
printf("Bad epilogue header\n");
check_is_next_ptr_pointing_to_free(bp);
check_contigous(bp);
check_freelist_freeblock(bp);
}
/*
* mm_checkheap - Check the heap for consistency
*/
void mm_checkheap(int verbose)
{
char *bp = heap_listp;
if (verbose) {
printf("Heap (%p):\n", heap_listp);
printf("Root (%p):\n", tree_root);
}
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp))))
printf("Bad epilogue header\n");
}
void *luaM_realloc(void *block, int32 size) {
int32 realsize = HEADER + size + 1;
int32 realsize = sizeof(int32) + size + sizeof(char);
if (realsize != (size_t)realsize)
lua_error("Allocation Error: Block too big");
if (size == 0) { // ANSI dosen't need this, but some machines...
if (block) {
memset(block, -1, *((int32 *)block - 1)); // erase block
block = checkblock(block);
free(block);
}
return NULL;
}
if (block) {
block = checkblock(block);
block = (int32 *)realloc(block, realsize);
} else
block = (int32 *)malloc(realsize);
if (!block)
lua_error(memEM);
totalmem += size;
numblocks++;
*(int32 *)block = size;
*(((char *)block) + size + sizeof(int32)) = MARK;
return (int32 *)block+1;
}
//check heap
static int check_my_heap(int verbose){
if (!verbose){
return 0;
}
else {
printf("Heap (%p):\n", heap_listp);
void *bp;
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp))){
printf("Bad prologue header\n");
return 1;
}
if (checkblock(heap_listp)){
return 1;
}
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
printblock(bp);
if (checkblock(bp)){
return 1;
}
}
if (verbose)
printblock(bp);
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp)))){
printf("Bad epilogue header\n");
return 1;
}
}
return 0;
}
// Returns 0 if no errors were found, otherwise returns the error
int mm_checkheap(int verbose) {
// char *bp = heap_listp;
if (verbose)
printf("Heap (%p):\n", heap_listp);
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(heap_listp);
void* list;
int count_free_in_list = 0;
int count_free_in_heap = 0;
for (int i =0; i < 9; i++)
{
for (list = (void*)(*(long*)GET_BUCKET(root,i)); list != NULL;
list = get_succ(list) ) {
if (verbose)
printblock(list);
checkblock(list);
if ( get_succ(list) != NULL && get_pred(list) !=NULL)
check_succ_pred(list);
check_address(list);
count_free_in_list++;
check_in_correct_bucket(list, i);
}
}
char *bp;
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose)
{
if (GET_ALLOC(HDRP(bp)) == 0)
count_free_in_heap ++;
printblock(bp);
checkblock(bp);
check_coalescing( (void*)bp);
}
}
if (count_free_in_heap != count_free_in_list)
printf ("Number of free block not consistent in heap and list list \n");
if (verbose)
printblock(bp);
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp))))
{
printf("Bad epilogue header\n");
if (GET_SIZE(HDRP(bp)) != 0)
printf ("size is not 0\n");
if (!(GET_ALLOC(HDRP(bp))) )
printf ("not allocated properly\n");
}
return 0;
}
/*
* checkheap - Check the heap for consistency
* (iterates all the blocks starting from prologue to epilogue)
*
*/
void _checkheap(void)
{
char *bp = heap_listp;
size_t prev_alloc, curr_alloc;
dbg1("\n[CHECK HEAP]\n");
dbg1("\n[verbose=%d]\n", verbose);
if (verbose) {
printf("Heap (starting address:%p):\n", heap_listp);
printf("-prologue-");
printblock(bp);
}
/* checking prologue block (size, allocate bit) */
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp))) {
printf("Bad prologue header\n");
printf("-prologue-");
printblock(bp);
}
checkblock(heap_listp); /* alignment, header/footer */
prev_alloc = GET_ALLOC(HDRP(bp));
/* checking allocated/free blocks */
for (bp = NEXT_BLKP(heap_listp); GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
curr_alloc = GET_PREV_ALLOC(HDRP(bp));
if (verbose)
printblock(bp);
if (!prev_alloc != !curr_alloc) {
/* previous block's allocate bit should match current block's prev allocate bit */
printf("prev allocate bit mismatch\n");
printblock(bp);
exit(0);
}
prev_alloc = GET_ALLOC(HDRP(bp));
checkblock(bp);
}
printf("done\n");
/* checking epilouge block */
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp)))){
printf("Bad epilogue header\n");
printf("-epilogue-");
printblock(bp);
}
checklist();
dbg1("[CHECK DONE]\n\n");
}
/*
* mm_checkheap - Check the heap for consistency
*/
void mm_checkheap(int verbose)
{
if (verbose)
printf("Check heap: \n");
char *bp = heap_listp;
int free_block_flag = 0;
int free_block_count = 0;
if (verbose)
printf("Heap (%p):\n", heap_listp);
// check prologue block
if ((GET_SIZE(HDRP(heap_listp)) != OVERHEAD) || !GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(heap_listp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
// check coalescing
if (!GET_ALLOC(HDRP(bp))) {
if (free_block_flag == 1) {
printf("Error: consecutive free blocks %p | %p in the heap.\n", PREV_BLKP(bp),bp);
}
free_block_flag = 1;
free_block_count++;
} else {
free_block_flag = 0;
}
}
if (verbose)
printblock(bp);
// check epilogue block
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp))))
printf("Bad epilogue header\n");
// print heap boundaries
check_heapboundaries(heap_listp-DSIZE, bp-1);
if (verbose) {
printfreelist();
}
checkfreelist(free_block_count);
}
/*
* Initialize: return -1 on error, 0 on success.
*/
int mm_init(void)
{
/* Create the initial empty heap */
if ((bins = mem_sbrk(
ALIGN(fixed_bin_count * sizeof(block_ptr)) +
4 * WSIZE)) == (block_ptr)-1)
return -1;
memset(bins, 0, fixed_bin_count * sizeof(block_ptr));
heap_listp = (char *)ALIGN((unsigned long)(bins + fixed_bin_count));
larger_bin_root = NULL;
PUTTRUNC(heap_listp, 0); /* Alignment padding */
PUTTRUNC(heap_listp + (1 * WSIZE), PACK(DSIZE, 1)); /* Prologue header */
PUTTRUNC(heap_listp + (2 * WSIZE), PACK(DSIZE, 1)); /* Prologue footer */
PUTTRUNC(heap_listp + (3 * WSIZE), PACK(0, 1)); /* Epilogue header */
heap_listp += (2 * WSIZE);
SET_ALLOC(heap_listp);
#ifdef DEBUG
{
printblock(heap_listp);
checkblock(heap_listp);
}
operid = 0;
#endif
return 0;
}
static
void
test567(int testno, unsigned long seed)
{
static const int sizes[8] = { 13, 17, 69, 176, 433, 871, 1150, 6060 };
void *ptrs[32];
int psizes[32];
int i, n, size, failed=0;
srandom(seed);
printf("Seeded random number generator with %lu.\n", seed);
for (i=0; i<32; i++) {
ptrs[i] = NULL;
psizes[i] = 0;
}
for (i=0; i<100000; i++) {
n = random()%32;
if (ptrs[n] == NULL) {
size = sizes[random()%8];
ptrs[n] = malloc(size);
psizes[n] = size;
if (ptrs[n] == NULL) {
printf("\nmalloc %u failed\n", size);
failed = 1;
break;
}
markblock(ptrs[n], size, n, 0);
}
else {
size = psizes[n];
if (checkblock(ptrs[n], size, n, 0)) {
failed = 1;
break;
}
free(ptrs[n]);
ptrs[n] = NULL;
psizes[n] = 0;
}
if (i%256==0) {
printf(".");
}
}
printf("\n");
for (i=0; i<32; i++) {
if (ptrs[i] != NULL) {
free(ptrs[i]);
}
}
if (failed) {
printf("FAILED malloc test %d\n", testno);
}
else {
printf("Passed malloc test %d\n", testno);
}
}
static void freeblock (void *block) {
if (block) {
size_t size = *blocksize(block);
block = checkblock(block);
memset(block, -1, size+HEADER+MARKSIZE); /* erase block */
(free)(block); /* free original block */
}
}
/*
* mm_checkheap - Check the heap for consistency
*/
void mm_checkheap(int verbose)
{
//printf("************ CHECK BEGIN ***************\n");
char *bp = heap_listp;
char *checkAll = heap_listp;
int countblocks = -1;
if (verbose) {
printf("Heap: (%p)\n", heap_listp);
}
if ((GET_SIZE(HDRP(heap_listp)) != OVERHEAD) || !GET_ALLOC(HDRP(heap_listp))) {
printf("Bad prologue header\n");
}
checkblock(heap_listp);
while(GET(SUCC(bp)) != 0){
if(verbose == 1)
printblock(bp);
checkblock(bp);
//countblocks++;
bp = (char*)GET(SUCC(bp));
}
if(verbose == 1)
printblock(bp);
for (checkAll = heap_listp; GET_SIZE(HDRP(checkAll)) > 0; checkAll = NEXT_BLKP(checkAll)) {
if(!GET_ALLOC(HDRP(checkAll)) && !block_in_free_list(checkAll)){
printf("Block is marked free but not in free list\n");
}
checkblock(checkAll);
countblocks++;
}
//printf("Number of free blocks: %d\n", freeblockcount);
//printf("Total number of blocks: %d\n", countblocks);
if ((GET_SIZE(HDRP(checkAll)) != 0) || !(GET_ALLOC(HDRP(checkAll)))) {
printf("Bad epilogue header\n");
}
//printf("****************** CHECK END ********************\n");
}
/*
* mm_checkheap - Checks the invariants of the heap
* This function checks the invariants of the heap such as header-footer match,
* absence of contiguous blocks of free memory and confirmation that the
* block pointers are within the heaps boundaries.
*/
void mm_checkheap(int verbose)
{
void *bp = heap_listp; //Points to the first block in the heap
verbose = verbose;
/* If first block's header's size or allocation bit is wrong,
* the prologue header is incorrect. */
if ((GET_SIZE(HDRP(heap_listp)) != MINBLOCKSIZE) ||
!GET_ALLOC(HDRP(heap_listp)))
printf("Bad prologue header\n");
checkblock(bp);
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp))
{
if (verbose)
printblock(bp);
if(GET_SIZE(HDRP(bp)) == 0)
printf("Error: block has zero size\n");
checkblock(bp);
/* Checking to see if free block in the free list */
if(!GET_ALLOC(HDRP(bp)))
checkInFreeList(bp);
}
/* If last block's header's size or allocation bit is wrong,
* the epilogue's header is wrong. We also check the specific location
* of the epilogue header with respect to the last byte of the heap.
* mem_heap_hi() and bp(at this point) both point to the same word,
* but mem_heap_hi() points to the last byte and hence we must add 3 to
* the address of the header of bp to check this condition.
*/
if (GET_SIZE(HDRP(bp)) != 0 || (GET_ALLOC(HDRP(bp)) != 1)
|| (HDRP(bp) + WSIZE - 1) != mem_heap_hi())
printf("Bad epilogue header\n");
for(bp = free_listp; GET_ALLOC(HDRP(bp)) == 0; bp = NEXT_FREE(bp))
checkFreeNodes(bp);
}
/*
* checkheap
* Check the consistency of the memory heap
* Return nonzero if the heap is consistant.
*/
void checkheap(bool verbose){
int i;
void *bp;
for(i = 0; i < TOTAL_LISTS; i++) {
bp = free_listp[i];
while (bp) {
//Checking for a allocated block in free list
if (GET_ALLOC(HDRP(bp)) == 1 || GET_ALLOC(FTRP(bp)) == 1){
printf("Found a allocated block in %dth freelist\n",i);
return;
}
bp = getNext(bp);
}
}
if (verbose)
printf("Heap (%p):\n", heaplistp);
if (GET_SIZE(HDRP(heaplistp)) != DSIZE ||!GET_ALLOC(HDRP(heaplistp)))
printf("Bad prologue header\n");
checkblock(heaplistp);
for (bp = heaplistp; GET_SIZE(HDRP(bp)) > 0; bp = (void *)NEXT_BLKP(bp)) {
if (verbose)
printblock(bp);
checkblock(bp);
}
if (verbose)
printblock(bp);
if (GET_SIZE(HDRP(bp)) != 0 || !GET_ALLOC(HDRP(bp)))
printf("Bad epilogue header\n");
}
/*
* malloc
*/
block_ptr malloc(size_t size)
{
size_t asize; /* Adjusted block size */
size_t extendsize; /* Amount to extend heap if no fit */
char *bp;
if (heap_listp == 0)
{
mm_init();
}
/* Ignore spurious requests */
if (size == 0)
return NULL;
/* Adjust block size to include overhead and alignment reqs. */
if (size <= DSIZE)
asize = 2 * DSIZE;
else
asize = DSIZE * ((size + (WSIZE) + (DSIZE - 1)) / DSIZE);
#ifdef DEBUG
printf("\nMalloc request: size = %zu, rounded to %zu \033[41;37m[ID:%d]\033[0m\n", size, asize, operid++);
#endif
/* Search the free list for a fit */
if ((bp = find_fit(asize)) != NULL)
{
#ifdef DEBUG
{
puts("Found fit!");
checkblock(bp);
printblock(bp);
}
#endif
place(bp, asize);
return bp;
}
/* No fit found. Get more memory and place the block */
extendsize = MAX(asize, BLOCKSIZE);
if ((bp = extend_heap(extendsize / WSIZE)) == NULL)
return NULL;
place(bp, asize);
return bp;
}
static
void
test2(void)
{
volatile unsigned *x;
size_t size;
printf("Entering malloc test 2.\n");
printf("Make sure you read and understand the comment in malloctest.c "
"that\nexplains the conditions this test assumes.\n\n");
printf("Testing how much memory we can allocate:\n");
for (size = HUGESIZE; (x = malloc(size))==NULL; size = size/2) {
printf(" %9lu bytes: failed\n", (unsigned long) size);
}
printf(" %9lu bytes: succeeded\n", (unsigned long) size);
printf("Passed part 1\n");
printf("Touching all the words in the block.\n");
markblock(x, size, 0, 1);
printf("Validating the words in the block.\n");
if (checkblock(x, size, 0, 1)) {
printf("FAILED: data corrupt\n");
return;
}
printf("Passed part 2\n");
printf("Freeing the block\n");
free((void *)x);
printf("Passed part 3\n");
printf("Allocating another block\n");
x = malloc(size);
if (x==NULL) {
printf("FAILED: free didn't return the memory?\n");
return;
}
free((void *)x);
printf("Passed malloc test 2.\n");
}
/*---------------------------------------
| |
| gettrace()/2 |
| |
| This function gives access to a |
| single trace within a 2D data |
| set. |
| |
+--------------------------------------*/
float *gettrace(int trace, int fpoint)
{
int res,
ok;
if (interuption)
return(NULL);
long_event();
/***********************************************
* Check to see if the phasefile data need to *
* be recalculated from the datafile data. *
***********************************************/
if (checkblock(trace, &ok, D_PHASFILE))
return(NULL);
/**************************************************
* Get the datafile data and process for display *
* according the "dmg" and "dmg1" (if relevant) *
* display parameters. *
**************************************************/
if (!ok)
{ /* must calculate from complex or hypercomplex data, includes 1D or 2D */
if (getdata())
return(NULL);
if ( (res = D_markupdated(D_PHASFILE, c_buffer)) )
{
D_error(res);
return(NULL);
}
}
return(c_block.data + (trace - c_first)*(fn/2) + fpoint);
}
static
void
test1(void)
{
volatile unsigned *x;
printf("*** Malloc test 1 ***\n");
printf("Allocating %u bytes\n", BIGSIZE);
x = malloc(BIGSIZE);
if (x==NULL) {
printf("FAILED: malloc failed\n");
return;
}
markblock(x, BIGSIZE, 0, 0);
if (checkblock(x, BIGSIZE, 0, 0)) {
printf("FAILED: data corrupt\n");
return;
}
free((void *)x);
printf("Passed malloc test 1.\n");
}
void MiniMax::scoreState(tree& state) {
/* Score the given state */
int m = state.board.size(); // num columns
int n = state.board[0].length() - 1; // num rows
int R = state.R; // for my convenience
int d = ((m - R) + (n - R) + 1); // num diags (usable)
int s = n - R; // anchor point for diags
int score = 0; // the score we will assign
std::vector<std::string> rows; // board rows
std::vector<std::string> diaD; // board down diags (usable)
std::vector<std::string> diaU; // board up diags (usable)
// this prevents multiple resize operations and initializes all values
// in each vector
rows.resize(n);
diaD.resize(d);
diaU.resize(d);
// fill in rows, diaD, and diaU
for (int i = 0; i < m; ++i) {
for (int j = 0; j < n; ++j) {
rows[j] += state.board[i][j];
if ((-1 * s) - (m - n) <= (j - i) && (j - i) <= s) { // up diags
diaU[s - (j - i)] += state.board[i][j];
}
if (s < (i + j) && (i + j) < (s + d)) { // down diags
diaD[(i + j) - (s + 1)] += state.board[i][j];
}
}
}
int col = state.move;
if (col < 0 || col >= (int) state.board.size()) {
state.score = 0;
return;
}
int row = state.board[col].find_last_of("XO");
int diU = s - (col - row);
int diD = (col + row) - (s + 1);
std::string c = state.board[col];
std::string r = rows[row];
char placed = c.at(row);
bool blocked = false;
std::string D;
if (diD >= 0 && diD < (int) diaD.size()) {
D = diaD[diD];
int x = (col + row >= s + R) ? col - ((col + row) - n) : col;
blocked |= checkblock(D, placed, x, R);
}
std::string U;
if (diU >=0 && diU < (int) diaU.size()) {
U = diaU[diU];
int x = (col - row >= 1) ? col - (col - row) : col;
blocked |= checkblock(U, placed, x, R);
}
blocked |= (
checkblock(c, placed, row, R) ||
checkblock(r, placed, col, R)
);
if (blocked) {
state.score = (placed == 'X') ?
std::numeric_limits<int>::max() - 2 :
std::numeric_limits<int>::min() + 2;
return;
}
// score all the things
for (std::string& column : state.board) {
int s = scoreLine(column, R);
if (isWin(s)) {
state.score = s;
return;
}
score += s;
}
for (std::string& row : rows) {
int s = scoreLine(row, R);
if (isWin(s)) {
state.score = s;
return;
}
score += s;
}
for (std::string& diag : diaD) {
int s = scoreLine(diag, R);
if (isWin(s)) {
state.score = s;
return;
}
score += s;
}
for (std::string& diag : diaU) {
int s = scoreLine(diag, R);
if (isWin(s)) {
state.score = s;
return;
}
score += s;
}
state.score = score;
}
static void freeblock (void *block) {
if (block)
memset(block, -1, *blocksize(block)); /* erase block */
free(checkblock(block));
}
/**
* checkheap - Function to check the consistency of the heap
* @param verbose How much information to be printed on the screen
*/
void checkheap(int verbose)
{
/* Checks:
* 1. Check each block for
* a. Alignment
* b. Header and Footer :
* i. Size Match
* ii. Header Footer Match Each other
* c. In Heap
* 2. Get next block in free list.
* 3. Check for no extra block in heap, from the seg lists
* 4. Check for the cycle in the list.
* 5. Check Epilogue Block
* 6. Check Prologue Block
* 7. Check proper coalescing - no previous and next free blocks
*/
char *bp = heap_listp;
/**
* run checkheap with verbose =9 to avoid compiler from giving error,
* and also making sure that checkheap doesnot run
*/
if(verbose == 9) {
return;
}
/**
* Following condition never will be true.
* A place function to avoid compiler compalaining
*/
if(verbose ==10) {
print_free_block(GET_SEGI(seg_list,0));
}
if (verbose){
dbg_printf("Heap (%p):\n", heap_listp);
}
/*Check for epilogue*/
if ((GET_SIZE(HDRP(heap_listp)) != DSIZE) || !GET_ALLOC(HDRP(heap_listp))){
printf("ERROR: Bad prologue header\n");
}
/*Check header block for issues*/
checkblock(heap_listp);
/*Now check the complete heap*/
for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
if (verbose) {
printblock(bp);/*If Verbose , Print the heap*/
}
checkblock(bp);
}
if (verbose)
printblock(bp);
/*Check for Epilogue*/
if ((GET_SIZE(HDRP(bp)) != 0) || !(GET_ALLOC(HDRP(bp)))) {
printf("ERROR: Bad epilogue header for block \n");
printblock(bp);
}
/**
* Checks with respect to seg list
*/
/*Check if all the pointers in all the free lists are aligned*/
check_seg_pointers();
/* Check for count of free blocks, iterating over blocks and by
* going through next pointers*/
check_count_free_list();
/*Check for cycle in the free list*/
check_cycle();
}
static
void
test3(void)
{
struct test3 *list = NULL, *tmp;
size_t tot=0;
int ct=0, failed=0;
void *x;
printf("Entering malloc test 3.\n");
printf("Make sure you read and understand the comment in malloctest.c "
"that\nexplains the conditions this test assumes.\n\n");
printf("Testing how much memory we can allocate:\n");
while ((tmp = malloc(sizeof(struct test3))) != NULL) {
tmp->next = list;
list = tmp;
tot += sizeof(struct test3);
markblock(list->junk, sizeof(list->junk), (uintptr_t)list, 0);
ct++;
if (ct%128==0) {
printf(".");
}
}
printf("Allocated %lu bytes\n", (unsigned long) tot);
printf("Trying some more allocations which I expect to fail...\n");
x = malloc(SMALLSIZE);
if (x != NULL) {
printf("FAILED: malloc(%u) succeeded\n", SMALLSIZE);
return;
}
x = malloc(MEDIUMSIZE);
if (x != NULL) {
printf("FAILED: malloc(%u) succeeded\n", MEDIUMSIZE);
return;
}
x = malloc(BIGSIZE);
if (x != NULL) {
printf("FAILED: malloc(%u) succeeded\n", BIGSIZE);
return;
}
printf("Ok, now I'm going to free everything...\n");
while (list != NULL) {
tmp = list->next;
if (checkblock(list->junk, sizeof(list->junk),
(uintptr_t)list, 0)) {
failed = 1;
}
free(list);
list = tmp;
}
if (failed) {
printf("FAILED: data corruption\n");
return;
}
printf("Let me see if I can allocate some more now...\n");
x = malloc(MEDIUMSIZE);
if (x == NULL) {
printf("FAIL: Nope, I couldn't.\n");
return;
}
free(x);
printf("Passed malloc test 3\n");
}
/* newspec flag for whether phase file has been updated */
float *calc_user(int trace, int fpoint, int dcflag, int normok, int *newspec, int file_id)
{
int res,
ok;
float datamax,
*spec_ptr;
/*****************************************************
* Check to see if data in phasefile block needs to *
* be recalculated from data in datafile block. *
*****************************************************/
*newspec = FALSE;
if (interuption)
return(NULL);
if (checkblock(trace, &ok, file_id))
return(NULL);
if (!ok)
{ /* must calculate from complex or hypercomplex data */
if (getdata())
return(NULL);
*newspec = TRUE;
}
spec_ptr = c_block.data + (trace - c_first)*(fn/2);
/*********************
* Drift correction *
*********************/
if (dcflag)
dodc(spec_ptr, 1, c_block.head->lvl, c_block.head->tlt);
if ((fabs(c_block.head->lvl - (float)lvl) > 0.01) ||
(fabs(c_block.head->tlt - (float)tlt) > 0.01))
{
leveltilt(spec_ptr, 1, c_block.head->lvl, c_block.head->tlt);
c_block.head->lvl = (float)lvl;
c_block.head->tlt = (float)tlt;
c_block.head->scale = 0;
c_block.head->ctcount = 0;
*newspec = TRUE;
}
/******************
* Normalization *
******************/
if (normok && normflag)
{
if (c_block.head->ctcount == 0)
{
maxfloat(spec_ptr, fn/2, &datamax);
setnormfactor(&(c_block.head->ctcount), datamax);
}
getnormfactor(&(c_block.head->ctcount), &datamax);
if (datamax <= 1e-5)
datamax = 1e-5;
normalize = 1.0 / datamax;
}
/*********************************************
* If a "new spectrum" has been calculated, *
* update the internal buffer in which this *
* spectrum is stored. *
*********************************************/
if (*newspec)
{
if ( (res = D_markupdated(file_id, c_buffer)) )
{
D_error(res);
return(NULL);
}
}
return(spec_ptr + fpoint);
}