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Repo management & code cleanup

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Isaac Shoebottom 2023-11-25 22:32:34 -04:00
parent 7a3a6bd256
commit f8cbf9f064
13 changed files with 69 additions and 188 deletions
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2
Assignment7/.gitignore vendored Normal file
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@ -0,0 +1,2 @@
student_out\*.out
a.out

7
Assignment7/.idea/runConfigurations/Test1.xml Normal file
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<component name="ProjectRunConfigurationManager">
<configuration default="false" name="Test1" type="CLionNativeAppRunConfigurationType" PROGRAM_PARAMS="3" REDIRECT_INPUT="true" REDIRECT_INPUT_PATH="$PROJECT_DIR$/in/algo-check.in" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment7" TARGET_NAME="all" CONFIG_NAME="all" version="1" RUN_PATH="$PROJECT_DIR$/a.out">
<method v="2">
<option name="CLION.COMPOUND.BUILD" enabled="true" />
</method>
</configuration>
</component>

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Assignment7/a.out
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117
Assignment7/code/main.c
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@ -1,72 +1,74 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#define OFFSETBITS 12
#define PAGESIZE (1 << OFFSETBITS)
#define PAGETABLEBITS 10
#define ARCH 32
int framesSize;
unsigned int pageFault=0;
unsigned int pageFault = 0;
unsigned int pageHits = 0;
unsigned int pagesSwapped = 0;
int time = 0;
typedef struct frameEntry{
typedef struct frameEntry {
unsigned int pageNumber;
int lastUsed;
bool dirty;
} frameEntry;
frameEntry* frames;
frameEntry *frames;
int getPageOffsetAddress(unsigned long logicalAddress){
int getPageOffsetAddress(unsigned long logicalAddress) {
// Last 12 bits of logical address
// Page size is 4096 bytes, and we bitwise AND with 4095 (111111111111) to get the last 12 bits
return logicalAddress & (PAGESIZE-1);
return logicalAddress & (PAGESIZE - 1);
}
int getPageNumber(unsigned long logicalAddress){
int getPageNumber(unsigned long logicalAddress) {
// First 20 bits of logical address
// Bitwise shift right 12 bits to get the first 20 bits, as the last 12 bits are discarded
return logicalAddress >> OFFSETBITS;
}
void printPhysicalAddress(int frameID, unsigned long logicalAddress){
printf("%lu -> %i\n",logicalAddress,frameID*PAGESIZE+getPageOffsetAddress(logicalAddress));
void printPhysicalAddress(int frameID, unsigned long logicalAddress) {
printf("%lu -> %i\n", logicalAddress, frameID * PAGESIZE + getPageOffsetAddress(logicalAddress));
}
double computeFormula(){
double computeFormula() {
// probabilityOfNoPageFault ∗ 10 + probabilityOfMajorPageFaultWithOneCopy ∗ 1000 + probabilityOfMajorPageFaultWithTwoCopyOperations ∗ 3000
double probabilityOfNoPageFault = 1 - (double)pageFault/(pageFault+pageHits);
double probabilityOfMajorPageFaultWithOneCopy = (double)pageFault/(pageFault+pageHits)*(1-(double)pagesSwapped/pageFault);
double probabilityOfMajorPageFaultWithTwoCopyOperations = (double)pageFault/(pageFault+pageHits)*(double)pagesSwapped/pageFault;
return probabilityOfNoPageFault*10 + probabilityOfMajorPageFaultWithOneCopy*1000 + probabilityOfMajorPageFaultWithTwoCopyOperations*3000;
double probabilityOfNoPageFault = 1 - (double) pageFault / (pageFault + pageHits);
double probabilityOfMajorPageFaultWithOneCopy = (double) pageFault / (pageFault + pageHits) * (1 - (double) pagesSwapped / pageFault);
double probabilityOfMajorPageFaultWithTwoCopyOperations = (double) pageFault / (pageFault + pageHits) * (double) pagesSwapped / pageFault;
return probabilityOfNoPageFault * 10 + probabilityOfMajorPageFaultWithOneCopy * 1000 + probabilityOfMajorPageFaultWithTwoCopyOperations * 3000;
}
// Int so we can return the index of the frame if it is in the frames array
int isInFrames(int pageNumber){
for (int i = 0; i < framesSize; i++){
if (frames[i].pageNumber == pageNumber){
int isInFrames(int pageNumber) {
for (int i = 0; i < framesSize; i++) {
if (frames[i].pageNumber == pageNumber) {
return i;
}
}
return -1;
}
int swapOut(){
// Swap out the least recently used frame
// Returns the index of the frame that was swapped out
int swapOut() {
// Find the least recently used frame
int leastRecentlyUsed = 0x7FFFFFFF;
int leastRecentlyUsedIndex = -1;
for (int i = 0; i < framesSize; i++){
if (frames[i].lastUsed < leastRecentlyUsed){
for (int i = 0; i < framesSize; i++) {
if (frames[i].lastUsed < leastRecentlyUsed) {
leastRecentlyUsed = frames[i].lastUsed;
leastRecentlyUsedIndex = i;
}
}
// Swap out is implied, so we increment pageSwapped
// If the frame is dirty, we need to write it to disk, so we increment pagesSwapped
if (frames[leastRecentlyUsedIndex].dirty) {
pagesSwapped++;
}
@ -74,10 +76,12 @@ int swapOut(){
return leastRecentlyUsedIndex;
}
int swapIn(int pageNumber){
// Swap in a page
// Returns the index of the frame that was swapped in
int swapIn(int pageNumber) {
// Find the first empty frame
for (int i = 0; i < framesSize; i++){
if (frames[i].pageNumber == -1){
for (int i = 0; i < framesSize; i++) {
if (frames[i].pageNumber == -1) {
pageFault++;
frames[i].pageNumber = pageNumber;
return i;
@ -90,64 +94,63 @@ int swapIn(int pageNumber){
return frameID;
}
void readFromAddress(unsigned long logicalAddress){
// Read from an address
void readFromAddress(unsigned long logicalAddress) {
unsigned int pageNumber = getPageNumber(logicalAddress);
int frameID = isInFrames(pageNumber);
if (isInFrames(pageNumber) == -1){
if (isInFrames(pageNumber) == -1) {
frameID = swapIn(pageNumber);
}
else{
} else {
pageHits++;
}
frames[frameID].lastUsed = time;
printPhysicalAddress(frameID,logicalAddress);
printPhysicalAddress(frameID, logicalAddress);
}
void writeToAddress(unsigned long logicalAddress){
// Write to an address, only difference is that we set the dirty bit to true
void writeToAddress(unsigned long logicalAddress) {
unsigned int pageNumber = getPageNumber(logicalAddress);
int frameID = isInFrames(pageNumber);
if (isInFrames(pageNumber) == -1){
if (isInFrames(pageNumber) == -1) {
frameID = swapIn(pageNumber);
}
else{
} else {
pageHits++;
}
frames[frameID].dirty = true;
frames[frameID].lastUsed = time;
printPhysicalAddress(frameID,logicalAddress);
printPhysicalAddress(frameID, logicalAddress);
}
int main(int argc, char** argv){
//Disable printf buffering
int main(int argc, char **argv) {
//Disable printf buffering for easier debugging
setbuf(stdout, NULL);
framesSize = atoi(argv[1]);
frames = calloc(framesSize,sizeof(frameEntry));
framesSize = atoi(argv[1]);
frames = calloc(framesSize, sizeof(frameEntry));
// Initialize frames to -1, so we can check if a frame is empty
for (int i = 0; i < framesSize; i++){
for (int i = 0; i < framesSize; i++) {
frames[i].pageNumber = -1;
frames[i].lastUsed = -1;
frames[i].dirty = false;
}
unsigned long logicalAddress;
char operation;
printf("Logical addresses -> Physical addresses:\n");
while(EOF != scanf("%c %lu\n",&operation,&logicalAddress) )
{
if (operation == 'r')
{
readFromAddress(logicalAddress);
}
else
{
writeToAddress(logicalAddress);
}
unsigned long logicalAddress;
char operation;
printf("Logical addresses -> Physical addresses:\n");
while (EOF != scanf("%c %lu\n", &operation, &logicalAddress)) {
if (operation == 'r') {
readFromAddress(logicalAddress);
} else {
writeToAddress(logicalAddress);
}
time++;
}
}
printf("\nStats:\nmajor page faults = %u\npage hits = %u\npages swapped out = %u\nEffective Access Time = %.3lf\n",pageFault,pageHits,pagesSwapped, computeFormula());
return 0;
printf("\nStats:\nmajor page faults = %u\npage hits = %u\npages swapped out = %u\nEffective Access Time = %.3lf\n",
pageFault,
pageHits,
pagesSwapped,
computeFormula()
);
return EXIT_SUCCESS;
}

14
Assignment7/student_out/algo-check-o-l.out
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Logical addresses -> Physical addresses:
1124955998 -> 1886
794845611 -> 4523
1540976830 -> 8382
1081961846 -> 3446
1124957700 -> 7684
794845440 -> 8448
1540976645 -> 5
Stats:
major page faults = 7
page hits = 0
pages swapped out = 0
Effective Access Time = 1000.000

15
Assignment7/student_out/discard-test-1.out
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Logical addresses -> Physical addresses:
1622650073 -> 3289
1144108930 -> 1922
101027544 -> 3800
1784484492 -> 652
823378840 -> 920
197493099 -> 363
1954899097 -> 1177
530511967 -> 2143
Stats:
major page faults = 8
page hits = 0
pages swapped out = 0
Effective Access Time = 1000.000

15
Assignment7/student_out/discard-test-2.out
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Logical addresses -> Physical addresses:
1622650073 -> 3289
1144108930 -> 6018
101027544 -> 3800
1784484492 -> 4748
823378840 -> 920
197493099 -> 4459
1954899097 -> 1177
530511967 -> 6239
Stats:
major page faults = 8
page hits = 0
pages swapped out = 0
Effective Access Time = 1000.000

14
Assignment7/student_out/fromText.out
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@ -1,14 +0,0 @@
Logical addresses -> Physical addresses:
1124955998 -> 1886
794845611 -> 4523
1540976830 -> 8382
1081961846 -> 3446
1124957700 -> 7684
794845440 -> 8448
1540976645 -> 5
Stats:
major page faults = 7
page hits = 0
pages swapped out = 1
Effective Access Time = 1285.714

15
Assignment7/student_out/major-test-1.out
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@ -1,15 +0,0 @@
Logical addresses -> Physical addresses:
1622650073 -> 3289
1144108930 -> 1922
101027544 -> 3800
1784484492 -> 652
823378840 -> 920
197493099 -> 363
1954899097 -> 1177
530511967 -> 2143
Stats:
major page faults = 8
page hits = 0
pages swapped out = 7
Effective Access Time = 2750.000

15
Assignment7/student_out/major-test-2.out
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@ -1,15 +0,0 @@
Logical addresses -> Physical addresses:
1622650073 -> 3289
1144108930 -> 6018
101027544 -> 3800
1784484492 -> 4748
823378840 -> 920
197493099 -> 4459
1954899097 -> 1177
530511967 -> 6239
Stats:
major page faults = 8
page hits = 0
pages swapped out = 6
Effective Access Time = 2500.000

15
Assignment7/student_out/page-hit-test.out
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@ -1,15 +0,0 @@
Logical addresses -> Physical addresses:
1725896583 -> 1927
1725896583 -> 1927
1725898287 -> 3631
1725894961 -> 305
1725896008 -> 1352
1725898705 -> 4049
1725898485 -> 3829
1725897033 -> 2377
Stats:
major page faults = 1
page hits = 7
pages swapped out = 0
Effective Access Time = 133.750

14
Assignment7/student_out/sample_output.out
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Logical addresses -> Physical addresses:
1124955998 -> 1886
794845611 -> 4523
1540976830 -> 8382
1124957700 -> 3588
1081961846 -> 7542
794845440 -> 8448
1540976645 -> 5
Stats:
major page faults = 6
page hits = 1
pages swapped out = 0
Effective Access Time = 858.571

14
Assignment7/student_out/sample_output_2.out
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@ -1,14 +0,0 @@
Logical addresses -> Physical addresses:
1124955998 -> 1886
794845611 -> 4523
1540976830 -> 8382
1124957700 -> 3588
1081961846 -> 7542
794845440 -> 8448
1540976645 -> 5
Stats:
major page faults = 6
page hits = 1
pages swapped out = 3
Effective Access Time = 1715.714