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Test completes. The source of my frustration was moving pools[nPools] = *this to the end of the constructor.

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410 2017-06-19 20:34:01 -05:00
parent e8bb8088a7
commit 00c5f4867f
3 changed files with 5 additions and 28 deletions
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2
.gitignore vendored
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@ -2,3 +2,5 @@ Abraham Silberschatz-Operating System Concepts (9th,2012.12).pdf
DevEnv/
*.o
*.bin
dev_kernel_grub.img
bochsout.txt

29
MP2/MP2_Sources/cont_frame_pool.C
View file

@ -148,9 +148,6 @@ ContFramePool::ContFramePool(unsigned long _base_frame_no,
nFreeFrames = _n_frames;
info_frame_no = _info_frame_no;
n_info_frames = _n_info_frames;
pools[nPools] = *this;
nPools += 1;
// If _info_frame_no is zero then we keep management info in the first
// frame(s), else we use the provided frame(s) to keep management info
@ -204,6 +201,9 @@ ContFramePool::ContFramePool(unsigned long _base_frame_no,
}
}
pools[nPools] = *this;
nPools += 1;
Console::puts("Frame Pool initialized\n");
}
@ -229,16 +229,10 @@ unsigned long ContFramePool::get_frames(unsigned int _n_frames)
while (true)
{
//Console::puts("Entered first loop");
unsigned char mask = 0x80 >> (j*2);
// check every 2 bits for a free frame in the bitmap
while((mask & bitmap[i]) == 0 || ((mask >> 1) & bitmap[i]) == 0)
{
//Console::puti(i);
//Console::puts("\n");
//Console::puti(j);
//Console::puts("\n");
//Console::puts("Entered second loop");
if(mask != 0x02)
{
j++;
@ -256,7 +250,6 @@ unsigned long ContFramePool::get_frames(unsigned int _n_frames)
c++;
while(c < _n_frames)
{
//Console::puts("Entered sequence check");
if(mask != 0x02)
{
mask = mask >> 2;
@ -294,7 +287,6 @@ unsigned long ContFramePool::get_frames(unsigned int _n_frames)
unsigned int temp = i;
while(c < _n_frames)
{
//Console::puts("Entered bitmap update");
if(mask != 0x02)
{
mask = mask >> 2;
@ -362,19 +354,9 @@ void ContFramePool::release_frames_here(unsigned long _first_frame_no)
{
unsigned char * bitmap = this->bitmap;
Console::puti(_first_frame_no);
Console::puts("\n");
Console::puti(base_frame_no);
unsigned int bitmap_index = (_first_frame_no - base_frame_no) / 4;
unsigned char mask = 0x80 >> ((_first_frame_no - base_frame_no) % 4) * 2;
//
Console::puts("\n");
Console::puti(bitmap[bitmap_index]);
Console::puts("\n");
Console::puti(bitmap[bitmap_index + 1]);
//
if(!((bitmap[bitmap_index] & mask) == 0 && (bitmap[bitmap_index] & (mask >> 1)) != 0))
{
if((bitmap[bitmap_index] & mask) != 0 && (bitmap[bitmap_index] & (mask >> 1)) != 0)
@ -401,11 +383,6 @@ void ContFramePool::release_frames_here(unsigned long _first_frame_no)
while(bitmap[bitmap_index] & mask == 0 && (bitmap[bitmap_index] & (mask >> 1)) == 0)
{
Console::puts("\n");
Console::puti(bitmap_index);
Console::puts("\n");
Console::puti(mask);
Console::puts("\n");
bitmap[bitmap_index] ^= mask;
bitmap[bitmap_index] ^= (mask >> 1);
if(mask != 0x02)

2
MP2/MP2_Sources/kernel.C
View file

@ -110,8 +110,6 @@ void test_memory(ContFramePool * _pool, unsigned int _allocs_to_go) {
Console::puts("alloc_to_go = "); Console::puti(_allocs_to_go); Console::puts("\n");
if (_allocs_to_go > 0) {
int n_frames = _allocs_to_go % 4 + 1;
Console::puti(n_frames);
Console::puts("\n");
unsigned long frame = _pool->get_frames(n_frames);
int * value_array = (int*)(frame * (4 KB));
for (int i = 0; i < (1 KB) * n_frames; i++) {