os-70-350

os-70-350 Commit Details


Date:2013-12-23 22:23:46 (11 years 8 months ago)
Author:Natalie Adams
Branch:master
Commit:688d807a1eaf0bb5892c35920c626d3ae8e11954
Parents: a103db320c888e50b2783116209ea4bfcf0c4ea0
Message:adding second race condition for both windows and linux
Changes:

File differences

petersons-linux/build2.sh
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#!/bin/bash␍␊
␍␊
gcc -o main2 -pthread main2.c␍␊
./main2
petersons-linux/main2.c
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// This example based off of samples by Jerry Breecher - http://web.cs.wpi.edu/~jb/CS502/Class_Example_Code.html␍␊
#include <stdio.h>␍␊
␍␊
#define LOOP 999999␍␊
␍␊
#if !defined(true) && !defined(false)␍␊
␉#define true 1␍␊
␉#define false 0␍␊
#endif␍␊
␍␊
volatile long gvar = 0;␍␊
␍␊
volatile int turn;␍␊
volatile int flag[2];␍␊
␍␊
void * produce(void* data) {␍␊
␉int i = 0;␍␊
␉flag[0] = true;␍␊
␉turn = 1;␍␊
␉while (flag[1] && turn == 1);␍␊
␉␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar++;␍␊
␍␊
␉flag[0] = false;␍␊
␍␊
}␍␊
␍␊
void * consume(void* data) {␍␊
␉int i = 0;␍␊
␉flag[1] = true;␍␊
␉turn = 0;␍␊
␉while (flag[0] && turn == 0);␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar--;␍␊
␉flag[1] = false;␍␊
}␍␊
␍␊
int main() {␍␊
␉int i;␍␊
␉pthread_t thread1, thread2;␍␊
␉int iret1, iret2;␍␊
␉flag[0] = true;␍␊
␉flag[1] = true;␍␊
␉␍␊
␉iret1 = pthread_create( &thread1, NULL, produce, NULL);␍␊
␉iret2 = pthread_create( &thread2, NULL, consume, NULL);␍␊
␉␍␊
␉pthread_join( thread1, NULL);␍␊
pthread_join( thread2, NULL);␍␊
␉printf("gvar = %i\n", gvar);␍␊
}
petersons-windows/build2.bat
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../vcbuild.bat main2
petersons-windows/main2.c
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// This example based off of samples by Jerry Breecher - http://web.cs.wpi.edu/~jb/CS502/Class_Example_Code.html␍␊
#include <stdio.h>␍␊
#include <windows.h>␍␊
␍␊
#define LOOP 999999␍␊
␍␊
#if !defined(true) && !defined(false)␍␊
␉#define true 1␍␊
␉#define false 0␍␊
#endif␍␊
␍␊
volatile long gvar = 0;␍␊
␍␊
volatile int turn;␍␊
volatile int flag[2];␍␊
␍␊
DWORD WINAPI produce(void* data) {␍␊
␉int i = 0;␍␊
␉flag[0] = true;␍␊
␉turn = 1;␍␊
␉while (flag[1] && turn == 1);␍␊
␉␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar++;␍␊
␍␊
␉flag[0] = false;␍␊
␍␊
}␍␊
␍␊
DWORD WINAPI consume(void* data) {␍␊
␉int i = 0;␍␊
␉flag[1] = true;␍␊
␉turn = 0;␍␊
␉while (flag[0] && turn == 0);␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar--;␍␊
␉flag[1] = false;␍␊
}␍␊
␍␊
int main() {␍␊
␉int i;␍␊
␉HANDLE thread1, thread2;␍␊
␉flag[0] = true;␍␊
␉flag[1] = true;␍␊
␉␍␊
␉thread1 = CreateThread(NULL, 0, produce, NULL, 0, NULL);␍␊
␉thread2 = CreateThread(NULL, 0, consume, NULL, 0, NULL);␍␊
␉WaitForSingleObject(thread1, INFINITE );␍␊
␉WaitForSingleObject(thread2, INFINITE );␍␊
␉printf("gvar = %i\n", gvar);␍␊
}
racecondition-linux/build2.sh
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#!/bin/bash␍␊
␍␊
gcc -o main -pthread main.c␍␊
./main
racecondition-linux/main2.c
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#include <stdio.h>␍␊
␍␊
#define LOOP 20000␍␊
␍␊
volatile int counter = -1;␍␊
volatile long gvar = 0;␍␊
␍␊
DWORD WINAPI produce(void* data) {␍␊
␉int i = 0;␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar++;␍␊
}␍␊
␍␊
DWORD WINAPI consume(void* data) {␍␊
␉int i = 0;␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar--;␍␊
}␍␊
␍␊
int main() {␍␊
␉int i;␍␊
␉pthread_t thread1, thread2;␍␊
␉int iret1, iret2;␍␊
␉iret1 = pthread_create( &thread1, NULL, produce, NULL);␍␊
␉iret2 = pthread_create( &thread2, NULL, consume, NULL);␍␊
␉␍␊
␉pthread_join( thread1, NULL);␍␊
pthread_join( thread2, NULL);␍␊
␉printf("gvar = %i\n", gvar);␍␊
}
racecondition-windows/build2.bat
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../vcbuild.bat main2
racecondition-windows/main2.c
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// This example based off of samples by Jerry Breecher - http://web.cs.wpi.edu/~jb/CS502/Class_Example_Code.html␍␊
#include <stdio.h>␍␊
#include <windows.h>␍␊
␍␊
#define LOOP 20000␍␊
␍␊
volatile int counter = -1;␍␊
volatile long gvar = 0;␍␊
␍␊
DWORD WINAPI produce(void* data) {␍␊
␉int i = 0;␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar++;␍␊
}␍␊
␍␊
DWORD WINAPI consume(void* data) {␍␊
␉int i = 0;␍␊
␉for (i = 0; i < LOOP; i++)␍␊
␉␉gvar--;␍␊
}␍␊
␍␊
int main() {␍␊
int i;␍␊
HANDLE thread1, thread2;␍␊
thread1 = CreateThread(NULL, 0, produce, NULL, 0, NULL);␍␊
thread2 = CreateThread(NULL, 0, consume, NULL, 0, NULL);␍␊
WaitForSingleObject(thread1, INFINITE);␍␊
WaitForSingleObject(thread2, INFINITE);␍␊
printf("gvar = %i\n", gvar);␍␊
}

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