Added kv-server code

client/Makefile

+
+kvclient: kvclient.o parsexml.o
+	gcc -o kvclient kvclient.o parsexml.o
+
+kvclient.o: kvclient.c parsexml.h
+	gcc -c -o kvclient.o kvclient.c
+
+%.o: %.c
+	gcc -c -o $@ $^ 
+
+run: kvclient
+	./kvclient batchRun.txt batchResp1.txt
+clean:
+	rm -f *.o kvclient *.csv *.xml batchResp*.txt
\ No newline at end of file

client/batchResp1.txt

+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
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+Success
+koida,dpp
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
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+Error,Does not exist
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+Success
+Success
+xmpldddddddd,val1123123
+Success
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+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123
+Success
+Success
+satyam,shivam
+sundaram,shivam4
+Error,Does not exist
+sundaram,shivam4
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Error,Does not exist
+Success
+Success
+Success
+xmpldddddddd,val1123123

client/batchRun.txt

+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+DEL,koida
+GET,koida
+PUT,koida,dpp
+GET,koida
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
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+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd
+PUT,satyam,shivam
+PUT,sundaram,shivam4
+GET,satyam
+GET,sundaram
+DEL,satyam
+GET,sundaram
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+GET,satyam
+PUT,xmpldddddddd,val1123123
+PUT,xmpld,val1123123
+PUT,xmpld1,val1123123
+GET,xmpldddddddd

client/kvclient.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <unistd.h>
+#include "parsexml.h"
+
+#define PORT 8080
+
+int main(int argc, char** argv)
+{
+	int sock_fd, addrlen, msglen; 
+
+	struct sockaddr_in clientAddr, *result;
+	char key[258],value[256*1024+2],buffer[257*1024],*message,*err;
+	char *operation = (char *)malloc(sizeof(char)*7);
+
+
+	if( (sock_fd = socket(AF_INET , SOCK_STREAM , 0)) == 0) {   //Connection oriented Socket, choose protocol automatically (0)
+		
+		printf("%s",toRespXML("Network Error: Could not create socket"));
+		exit(1);
+	} 
+
+	clientAddr.sin_family = AF_INET;
+	clientAddr.sin_port = htons(PORT);
+	clientAddr.sin_addr.s_addr = INADDR_ANY; //inet_addr("localhost");// inet_aton("localhost",&(clientAddr.sin_addr));
+	memset(&(clientAddr.sin_zero), '\0', 8); 
+    addrlen = sizeof(struct sockaddr_in);   
+
+	if(	connect(sock_fd, (struct sockaddr *)&clientAddr, addrlen)<0) {  
+		printf("%s",toRespXML("Network Error: Could not connect"));
+		exit(1);
+	} 
+
+	FILE *fp;
+    if (argc >= 2){
+        fp = fopen(argv[1], "r");
+        if (fp==NULL){
+            printf("ERROR:File doesn't exist\n");
+            return -1;
+        }
+    }
+	FILE *outFp;
+	if(argc>=3)
+		outFp = fopen(argv[2],"w+");
+	while(1){
+		// batch mode
+		if(argc >= 2) { 
+			if(fscanf(fp,"%[^,],",operation)==EOF)
+				break;
+			if(!strcmp(operation,"put") || !strcmp(operation,"PUT"))
+				fscanf(fp,"%[^,],%[^\n]\n",key,value);
+			else
+				fscanf(fp,"%[^\n]\n",key);
+			// printf("%s,%s,%s\n",operation,key,value);
+
+			if(!strcmp(operation,"get") || !strcmp(operation,"GET"))
+				strcpy(operation,"getreq");
+			else if(!strcmp(operation,"put") || !strcmp(operation,"PUT"))
+				strcpy(operation,"putreq");
+			else if(!strcmp(operation,"del") || !strcmp(operation,"DEL"))
+				strcpy(operation,"delreq");
+			else {
+				printf("Invalid Choice, Please try again\n");
+				continue;
+			}
+
+			message = toXML(operation,key,value);
+			write(sock_fd, message, strlen(message));
+			msglen = read(sock_fd, buffer, 257*1024);
+			buffer[msglen] = '\0';
+			extractRespXml(outFp,buffer);
+			if(argc>=4)
+				if(!strcmp(argv[3],"-p"))
+					puts(buffer);
+		} 
+		// Interactive mode
+		else {
+			printf("Enter operation\n GET\tPUT\tDEL\n");
+			scanf("%s",operation);
+			if(!strcmp(operation,"get") || !strcmp(operation,"GET")){
+				printf("Enter Key\n");
+				strcpy(operation,"getreq");
+				scanf("%s",key);
+			} else if(!strcmp(operation,"put") || !strcmp(operation,"PUT")){
+				printf("Enter Key and Value\n");
+				strcpy(operation,"putreq");
+				scanf("%s",key);
+				getchar();
+				scanf("%[^\n]s",value);
+			} else if(!strcmp(operation,"del") || !strcmp(operation,"DEL")){
+				printf("Enter Key\n");
+				strcpy(operation,"delreq");
+				scanf("%s",key);			
+			} else {
+				printf("Invalid Choice, Please try again\n");
+				continue;
+			}
+
+			message = toXML(operation,key,value);
+			write(sock_fd, message, strlen(message));
+
+			msglen = read(sock_fd, buffer, 257*1024);
+			buffer[msglen] = '\0';
+			puts(buffer);
+		}
+	}
+	fclose(outFp);
+	return 0;
+}
\ No newline at end of file

client/parsexml.c

+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include<unistd.h>
+#include "parsexml.h"
+
+char *toRespXML(char* msg){
+
+	char *line1 = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<KVMessage type=\"resp\">\n<Message>";
+	char *line2 = "</Message>\n</KVMessage>\n";
+	int msglen = strlen(line1)+strlen(line2)+strlen(msg)+1;
+	char *message = (char *)malloc(sizeof(char)*msglen);
+	strcpy(message,line1);
+	strcat(message,msg);
+	strcat(message,line2);
+	// puts("message");
+	// puts(msg);
+	return message;
+
+}
+
+char * toXML(char *reqType, char *key, char * value){
+	
+	char *line1 = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+	char *line21 = "<KVMessage type=\"";
+	char *line22 = "\">\n";
+	char *line31 = "<Key>";
+	char *line32 = "</Key>\n";
+	char *line41 = "<Value>";
+	char *line42 = "</Value>\n";
+	char *line5 = "</KVMessage>\n";
+	int len2 = strlen(line21)+strlen(line22)+strlen(reqType)+1;
+	int len3 = strlen(line31)+strlen(line32)+strlen(key)+1;
+	int len4 = strlen(line41)+strlen(line42)+strlen(value)+1;
+
+	char *line2 = (char *)malloc(sizeof(char) * len2);
+	char *line3 = (char *)malloc(sizeof(char) * len3);
+	char *line4 = (char *)malloc(sizeof(char) * len4);
+
+	strcpy(line2,line21);
+	strcat(line2,reqType);
+	strcat(line2,line22);	
+
+	strcpy(line3,line31);
+	strcat(line3,key);
+	strcat(line3,line32);
+
+	strcpy(line4,line41);
+	strcat(line4,value);
+	strcat(line4,line42);
+
+	int msglen = strlen(line1)+strlen(line2)+strlen(line3)+strlen(line4)+strlen(line5)+1;
+	char *message = (char *)malloc(sizeof(char) * msglen);
+
+	strcpy(message,line1);
+	strcat(message,line2);
+	strcat(message,line3);
+
+	if(!strcmp(reqType,"putreq") || !strcmp(reqType,"resp"))
+		strcat(message,line4);
+
+	strcat(message,line5);
+	free(line2);free(line3);free(line4);
+	return message;
+
+}
+
+char *extractRespXml(FILE *fp,char *buffer){
+	char *p,*q,*err;
+	char *key;
+	char *value;
+	p = strstr(buffer, "<Key>")+5;
+	q = strstr(buffer, "</Key>");
+	if(p!=NULL && q!=NULL){
+		key = malloc(sizeof(char)*(q-p+1));
+		memcpy(key,p,q-p);
+		key[q-p] = '\0';
+		p = strstr(buffer, "<Value>")+ 7;
+		q = strstr(buffer, "</Value>");
+		if(p!=NULL && q!=NULL){
+			value = malloc(sizeof(char)*(q-p+1));
+			memcpy(value,p,q-p);
+			value[q-p] = '\0';
+		}
+		fprintf(fp,"%s,%s\n",key,value);
+		free(key);
+		free(value);
+	}
+	else {
+		p = strstr(buffer, "<Message>")+ 9;
+		q = strstr(buffer, "</Message>");
+		char *message = (char *)malloc(sizeof(char)*170);
+		if(p!=NULL && q!=NULL){
+			memcpy(message,p,q-p);
+			if(!strcmp(message,"Success")){
+				fprintf(fp,"Success\n");
+			} else {
+				fprintf(fp,"Error,%s\n",message);
+			}
+		}
+		free(message);
+	}
+}
+
+
+extReq_t *extractXML(char *buffer){
+	extReq_t *req;
+	req = malloc(sizeof(extReq_t));
+	char *p,*q;
+	req->operation = malloc(sizeof(char)*12);
+	req->err = malloc(sizeof(char)*170);
+	req->val = malloc(sizeof(char)*256*1024+1);
+	req->error=true;
+	p = strstr(buffer, "type=")+ 6;
+	q = strstr(buffer, "\">");
+	if(p==NULL || q==NULL) {
+		strcpy(req->err,"XML Error: Received unparseable message");
+		return req;
+	}
+	else
+		memcpy(req->operation,p,q-p);
+
+	p = strstr(buffer, "<Key>")+5;
+	q = strstr(buffer, "</Key>");
+	if(p==NULL || q==NULL){
+		strcpy(req->err,"XML Error: Received unparseable message");
+		return req;
+	}
+	else if (q-p > 257) {
+		strcpy(req->err ,"Oversized key");
+		return req;
+	}
+	else {
+		req->key = malloc(sizeof(char)*(q-p+1));
+		memcpy(req->key,p,q-p);
+		req->key[q-p] = '\0';
+	}
+	if(!strcmp(req->operation,"putreq")) {
+		p = strstr(buffer, "<Value>")+ 7;
+		q = strstr(buffer, "</Value>");
+		if(p==NULL || q==NULL) {
+			strcpy(req->err,"XML Error: Received unparseable message");
+			return req;
+		}
+		else if (q-p>1024*257+2) {
+			strcpy(req->err,"Oversized value");
+			return req;
+		}
+		else{
+			req->val = realloc(req->val,sizeof(char)*(q-p+1));
+			memcpy(req->val,p,q-p);
+			req->val[q-p] = '\0';
+		}
+	}
+	req->error = false;
+	return req;
+
+}
\ No newline at end of file

client/parsexml.h

+#include<stdio.h>
+#include<stdbool.h>
+struct extractedReq {
+    char* key;
+    char* val;
+    char* operation;
+    char* err;
+    bool error;
+};
+typedef struct extractedReq extReq_t;
+char *toXML(char *reqType, char *key, char * value);
+extReq_t *extractXML(char *buffer);
+char *toRespXML(char* msg);
+char *extractRespXml(FILE *fp,char *buffer);

readme.txt

+Team Info:
+193050040 Shreyansh Jain
+193050049 Axel James
+193050052 Bhaveshkumar Yadav
+
+To compile the system run:
+make
+
+Instructions to execute :
+
+1. Through make file
+
+client: make runserver
+server: make runclient
+
+2. Manually
+
+server: ./kvserver -port=8080 -threadPoolSize=5 -numSetsInCache=4 -sizeOfSet=2
+
+client: ./kvclient batchRun.txt outputFile.txt -p
+
+'-p' flag prints the received response from server in BatchMode
+
+
+Input format :
+1. For Batch Mode
+
+PUT,<key>,<value>    OR
+GET,<key>            OR
+DEL,<key>
+put,<key>,<value>    OR
+get,<key>            OR
+del,<key>
+
+2. For Interactive Mode
+
+Enter operation : GET/PUT/DEL
+
+Now Enter Key,Value according to reqType
+For GET : <key>
+For PUT : <key> <value>
+For DEL : <key>
+

server/0.csv

+koida,dpp

server/8.csv

+xmpld1,val1123123

server/9.csv

+xmpld,val1123123

server/KVCache.c

+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include<pthread.h> 
+#include<unistd.h> 
+#include"KVCache.h"
+#include"kvstore.h"
+
+// 256+1 for key
+// 256*1024+1 for value
+// 1 for valid
+// 1 for replacement
+
+// cache line structure
+// [round-robin last][valid bit*setSize][referenced bit*setSize][blocks..]
+
+typedef struct Cache
+{
+	int numSets;
+	int setSize;
+	char * cacheptr;
+	pthread_mutex_t* locks;	
+}Cache;
+
+Cache cache;
+
+int getSetId(char * key){
+	int s=0;
+	for (int i = 0; (i < 10)&&(key[i]!='\0'); ++i)
+	{
+		s+=(int)key[i];
+	}
+	return s%(cache.numSets);
+}
+
+char* buildCache(int numSets, int setSize) {
+	char* cacheptr;
+	cacheptr = (char *)calloc((BLOCKINFO + BLOCKSIZE)*numSets*setSize + numSets, sizeof(char));
+	if (cacheptr==NULL)
+	{
+		printf("Not enought memory for cache\n");
+		exit(0);
+	}
+	cache.numSets = numSets;
+	cache.setSize = setSize;
+	cache.cacheptr = cacheptr;
+
+	//creating locks
+	cache.locks = (pthread_mutex_t *) malloc(numSets * sizeof(pthread_mutex_t));
+	if (cache.locks == NULL)
+	{
+		printf("Cannot create locks\n");
+		exit(0);
+	}
+	for (int i = 0; i < setSize; ++i)
+	{
+		if (pthread_mutex_init(&cache.locks[i], NULL) != 0) 
+	    { 
+	        printf("\n mutex init has failed\n"); 
+	        exit(0);
+	    } 
+	}
+	
+
+	return cacheptr;
+}
+
+char * searchCache(int setNo, char* key, int* idx) {
+	int success = 0;	
+	char * cacheptr = cache.cacheptr;
+	int startIdx = ((BLOCKINFO + BLOCKSIZE)*cache.setSize + 1 )*setNo;
+	char * startptr = cache.cacheptr + startIdx + 1;
+	char * blockptr = startptr + 2*cache.setSize;
+
+	for (int i = 0; i < cache.setSize; ++i)
+	{
+		if (startptr[i]==1)
+		{
+			if(strcmp(key,blockptr+(i)*BLOCKSIZE)==0) {
+				startptr[cache.setSize+i] = (char)1;
+				*idx = i;
+				return blockptr+(i)*BLOCKSIZE + 257;
+			}
+		}
+	}
+	return NULL;
+}
+
+char* secondChance(int setNo) {
+	char * cacheptr = cache.cacheptr;
+	int startIdx = ((BLOCKINFO + BLOCKSIZE)*cache.setSize + 1 )*setNo;
+	char * startptr = cache.cacheptr + startIdx;
+	int nextReplace = (int)startptr[0];
+	char* refBits = startptr+cache.setSize+1;
+	while(((int)refBits[nextReplace])!=0) {
+		refBits[nextReplace] = (char) 0;
+		nextReplace++;
+		if (nextReplace>=cache.setSize)
+		{
+			nextReplace = 0;
+		}
+	}
+	char* retBlock = startptr + 1 + BLOCKINFO*cache.setSize + BLOCKSIZE*nextReplace; 
+	refBits[nextReplace] = (char)1;
+	startptr[1+nextReplace] = (char)1;
+	nextReplace++;
+	if (nextReplace>=cache.setSize)
+	{
+		nextReplace = 0;
+	}
+	startptr[0] = (char)nextReplace;
+	return retBlock;
+}
+
+void addCache(int setNo, char* key, char* value, char* blockValue) {
+	if (blockValue!=NULL)
+	{
+		strcpy(blockValue, value);
+	}
+	else
+	{
+		char* block = secondChance(setNo);
+		strcpy(block, key);
+		strcpy(block+257, value);
+	}
+}
+
+void deleteCache(int setNo, char* key) {
+	int idx;
+	char * blockValue = searchCache(setNo, key, &idx);
+	if (blockValue!=NULL)
+	{
+		char * cacheptr = cache.cacheptr;
+		int startIdx = ((BLOCKINFO + BLOCKSIZE)*cache.setSize + 1 )*setNo;
+		char * startptr = cache.cacheptr + startIdx;
+		startptr[1+idx] = (int)0;
+		startptr[idx+cache.setSize] = (int)0;
+	}
+}
+
+bool searchKey(char* key, char* value) {
+	int idx;
+	bool success = false;
+	int setNo = getSetId(key);
+	pthread_mutex_lock(&(cache.locks[setNo]));
+	char* ret = searchCache(setNo, key, &idx);
+	
+	if (ret!=NULL) {
+		// Maybe should copy the string 'value' to another location
+		strcpy(value,ret);
+		pthread_mutex_unlock(&(cache.locks[setNo]));
+		success = true;
+		// return value;
+	}
+	else {
+		ret = restoreFromFile(key);
+		if (ret!=NULL) {   
+			strcpy(value,ret);
+			addCache(setNo, key, value, NULL);
+			success = true;
+		}
+		
+		pthread_mutex_unlock(&(cache.locks[setNo]));
+	}
+	return success;
+}
+
+void addKey(char* key, char* value) {
+	int idx;
+	int setNo = getSetId(key);
+	pthread_mutex_lock(&(cache.locks[setNo]));
+	char * blockValue = searchCache(setNo,key, &idx);
+	addCache(setNo, key, value, blockValue);
+	dumpToFile(key, value);
+	pthread_mutex_unlock(&(cache.locks[setNo]));
+}
+
+bool deleteKey(char* key) {
+	int setNo = getSetId(key);
+	bool success;
+	pthread_mutex_lock(&(cache.locks[setNo]));
+	deleteCache(setNo, key);
+	success = deleteStore(key);
+	pthread_mutex_unlock(&(cache.locks[setNo]));
+	return success;
+}
+
+void toXMLCache() {
+	char* cacheptr = cache.cacheptr;
+	char* info = cacheptr+1;
+	char* blockptr = info+2*cache.setSize;
+	FILE *fptr;
+	fptr = fopen("cache.xml", "w+");
+	if(fptr == NULL)
+	{
+		printf("Cannot open xml file!");
+		exit(1);
+	}
+	fprintf(fptr,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<KVCache>\n");
+
+	for (int i = 0; i <cache.numSets; ++i)
+	{
+		char* refInfo = info+cache.setSize;
+		fprintf(fptr,"\t<Set Id=\"%d\">\n", i);
+		for (int j = 0; j < cache.setSize; ++j)
+		{
+			fprintf(fptr,"\t\t<CacheEntry isReferenced=\"");
+			if (((int)refInfo[j])==0)
+			{
+				fprintf(fptr,"false\" isValid=\"​");
+			}
+			else
+			{
+				fprintf(fptr,"true\" isValid=\"​");
+			}
+			if (((int)info[j])==0)
+			{
+				fprintf(fptr,"false\">\n");
+				fprintf(fptr, "\t\t\t<Key></Key>\n");
+				fprintf(fptr, "\t\t\t<Value></Value>\n");
+			}
+			else
+			{
+				fprintf(fptr,"true\">\n");
+				fprintf(fptr, "\t\t\t<Key>%s</Key>\n",blockptr);
+				fprintf(fptr, "\t\t\t<Value>%s</Value>\n",blockptr+257);
+			}
+			
+			fprintf(fptr,"\t\t</CacheEntry>\n");
+			blockptr = blockptr + BLOCKSIZE;
+		}
+		fprintf(fptr,"\t</Set>\n");
+		info = info+cache.setSize*(BLOCKSIZE+BLOCKINFO)+1;
+		blockptr = info+2*cache.setSize;
+	}
+	fprintf(fptr,"</KVCache>\n");
+	fclose(fptr);
+}
+
+
+// int main()
+// {
+	// char k1[]="key1";
+	// char v1[]="value1";
+	// char k2[]="jkey2";
+	// char v2[]="value2";
+	// char k3[]="key3";
+	// char v3[]="value3";
+	// char* cacheptr =  buildCache(6, 2);
+	// addKey(k1,v1);
+	// addKey(k2,v2);
+	// // printf("addk\n");
+	// printf("s1:%s\n",searchKey(k1));
+	// printf("s12:%s\n",searchKey(k2));
+	// addKey(k3,v3);
+	// printf("s12:%s\n",searchKey(k1));
+	// printf("s12:%s\n",searchKey(k2));
+	// printf("s12:%s\n",searchKey(k3));
+	// // printf("searchCache\n");
+	
+	// printf("s2:%s\n",searchKey(v1));
+	// // printf("sea2\n");
+	// deleteKey(k1);
+	// deleteKey(k2);
+	// deleteKey(k3);
+	// deleteKey(v1);
+	// toXML();
+	// printf("s3:%s\n",searchKey(k1));
+// 	printf("%d",getSetId("abcd"));
+// 	printf("%d",getSetId("abcdesaf"));
+// 	printf("%d",getSetId("bcesaf"));
+// 	return 0;
+// }
\ No newline at end of file

server/KVCache.h

+// 256+1 for key
+// 256*1024+1 for value
+#include<stdbool.h>
+
+#define BLOCKSIZE (257 + 256*1024 + 1)
+// 1 for valid
+// 1 for replacement
+#define BLOCKINFO (2)
+
+char* buildCache(int numSets, int setSize);
+bool searchKey(char* key, char* value);
+void addKey(char* key, char* value);
+void toXMLCache();
+bool deleteKey(char* key);
\ No newline at end of file

server/Makefile

-.SUFFIXES:
-.SUFFIXES: .c .o
-CLNT = llist
-SRVR = llist_svc
-CFLAGS = -g -Wall
+kvserver: kvserver.o threadPool.o KVCache.o parsexml.o kvstore.o
+	gcc -o kvserver kvserver.o threadPool.o KVCache.o  parsexml.o kvstore.o -pthread
 
-SRVR_OBJ = llist_svc_proc.o llist_xdr.o llist_svc.o
-# CLNT_OBJ = llist.o llist_xdr.o llist_clnt.o
+kvserver.o: kvserver.c threadPool.h KVCache.h kvstore.h
+	gcc -c kvserver.c 
 
-.c.o:; gcc -c -o $@ $(CFLAGS) $<
+KVCache.o: KVCache.c KVCache.h kvstore.h
+	gcc -c KVCache.c
 
-default: $(SRVR)
+parsexml.o: parsexml.c parsexml.h
+	gcc -c parsexml.c
 
-$(CLNT): $(CLNT_OBJ)
-	gcc -o $(CLNT) $(CLNT_OBJ)
+threadPool.o: threadPool.c threadPool.h KVCache.h parsexml.h
+	gcc -c threadPool.c 
 
-$(SRVR): $(SRVR_OBJ)
-	gcc -o $(SRVR) $(SRVR_OBJ)
+kvstore.o: kvstore.c kvstore.h
+	gcc -c kvstore.c
 
+run: kvserver
+	./kvserver -port=8080 -threadPoolSize=5 -numSetsInCache=4 -sizeOfSet=2
 clean:
-	rm -f *.o 
-	rm -f llist llist_svc
+	rm -f *.o kvserver kvclient *.csv *.xml batchResp*.txt
\ No newline at end of file
\ No newline at end of file

server/kvserver.c

+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>   
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <stdbool.h>
+#include "threadPool.h"
+#include "KVCache.h"
+#include "parsexml.h"
+#include "kvstore.h"
+
+#define MAX_CLIENTS 20
+#define BACKLOG 5
+int PORT;
+
+bool startsWith(const char *str, const char *pre)
+{
+    size_t lenpre = strlen(pre),
+           lenstr = strlen(str);
+    return lenstr < lenpre ? false : memcmp(pre, str, lenpre) == 0;
+}
+
+int main(int argc, char* argv[])
+{
+    int numSets=16, setSize=4; 
+    int num_threads = 5;
+    PORT = 8080;
+    for (int i = 1; i < argc; ++i)
+    {
+        if (startsWith(argv[i],"-port="))
+        {
+            PORT = atoi(argv[i]+6);
+        }
+        else if (startsWith(argv[i],"-threadPoolSize="))
+        {
+            num_threads = atoi(argv[i]+16);
+        }
+        else if (startsWith(argv[i],"-numSetsInCache="))
+        {
+            numSets = atoi(argv[i]+16);
+        }
+        else if (startsWith(argv[i],"-sizeOfSet="))
+        {
+            setSize = atoi(argv[i]+11);
+        }
+    }
+
+    tpool_t* tp   = createThreadPool(num_threads);
+    printf("NumSets = %d",numSets);
+    char* cacheptr =  buildCache(numSets, setSize);
+    initStore();
+    int sock_fd, addrlen, msglen, newConnection, client_socket[MAX_CLIENTS], max_sd;
+    struct sockaddr_in socketAddr;
+    char buffer[257*1024*10];
+    fd_set rset;
+    memset(client_socket,0,sizeof(int)*MAX_CLIENTS);
+
+    if( (sock_fd = socket(AF_INET , SOCK_STREAM , 0)) == 0) {
+		printf("%s",toRespXML("Network Error: Could not create socket"));
+        exit(1);
+    }
+
+    socketAddr.sin_family = AF_INET;
+    socketAddr.sin_addr.s_addr = INADDR_ANY;
+    socketAddr.sin_port = htons( PORT );
+    memset(&(socketAddr.sin_zero), '\0', 8);
+    addrlen = sizeof(struct sockaddr_in);
+
+    if (bind(sock_fd, (struct sockaddr *)&socketAddr, addrlen)<0){
+        perror("bind failed");
+        exit(1);
+    }
+    printf("Listening on port %d \n", PORT);
+
+    if (listen(sock_fd, BACKLOG) < 0) {
+        perror("listen");
+        exit(1);
+    }
+    puts("Waiting for connections ...");
+
+    while(1)
+    {
+        FD_ZERO(&rset);
+        FD_SET(sock_fd, &rset);
+        max_sd = sock_fd;
+
+        for (int i = 0 ; i < MAX_CLIENTS ; i++) {
+            int sd = client_socket[i];
+
+            if(sd > 0)
+                FD_SET( sd , &rset);
+
+            if(sd > max_sd)
+                max_sd = sd;
+        }
+
+        if ( (select(max_sd+1,&rset,NULL,NULL,NULL) < 0) && (errno!=EINTR))
+            printf("select error");
+
+        if (FD_ISSET(sock_fd, &rset)){
+            newConnection = accept(sock_fd, (struct sockaddr *)&socketAddr, (socklen_t*)&addrlen);
+            if (newConnection < 0) {
+                perror("Error during Accept");
+                exit(1);
+            }
+            printf("New connection,socket_fd is %d,ip is:%s,port:%d\n", newConnection,inet_ntoa(socketAddr.sin_addr),ntohs(socketAddr.sin_port));
+
+            for (int i=0;i<MAX_CLIENTS;i++) {
+                if( client_socket[i] == 0 ) {
+                    client_socket[i] = newConnection;
+                    printf("Adding to list of sockets as %d\n" , i);
+                    break;
+                }
+            }
+        }
+
+        for (int i = 0; i < MAX_CLIENTS; i++) {
+            int sd = client_socket[i];
+            if (FD_ISSET(sd,&rset)) {
+                if ((msglen = read(sd,buffer,1024*257)) == 0) {
+                    getpeername(sd , (struct sockaddr*)&socketAddr,(socklen_t*)&addrlen);
+                    printf("Host disconnected,ip %s,port %d\n",inet_ntoa(socketAddr.sin_addr),ntohs(socketAddr.sin_port));
+                    close(sd);
+                    client_socket[i] = 0;
+                }
+                else {
+                    buffer[msglen] = '\0';
+                    // printf("message recieved\n");
+                    // printf("%s",buffer);
+                    puts(buffer);
+                    addRequestToQueue(tp,decodeRequestAndProcess,buffer,sd);
+                    /*
+                    char operation[7],key[257],value[256*1024+1];
+                    extractXML(buffer,key,value,operation);
+                    printf("%s\n%s\n%s\n",key,value,operation);
+                    
+
+                    ThreadPool Here !!
+                    Call extract from XML procedure to get Operation Type, Key, Value
+
+                    */
+                    // write(sd , buffer , strlen(buffer));
+                }
+            }
+        }
+    }
+
+    return 0;
+}
\ No newline at end of file

server/kvstore.c

+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include<pthread.h> 
+#include<unistd.h> 
+#include<stdbool.h>
+
+/////////////////add/////////////////
+#define NUMFILES 10
+typedef struct Store
+{
+    pthread_mutex_t* locks; 
+}Store;
+
+Store store;
+
+int getFileId(char * key){
+    int s=0;
+    for (int i = 0; (i < 10)&&(key[i]!='\0'); ++i)
+    {
+        s+=(int)key[i];
+    }
+    return s%(NUMFILES);
+}
+void initStore() {
+    //creating locks
+    store.locks = (pthread_mutex_t *) malloc(NUMFILES * sizeof(pthread_mutex_t));
+    if (store.locks == NULL)
+    {
+        printf("Cannot create locks\n");
+        exit(0);
+    }
+    for (int i = 0; i < NUMFILES; ++i)
+    {
+        if (pthread_mutex_init(&store.locks[i], NULL) != 0) 
+        { 
+            printf("\n mutex init has failed\n"); 
+            exit(0);
+        } 
+    }    
+
+    return;
+}
+/////////////////add end/////////////////
+
+bool dumpToFile(char* key, char* val){
+
+    /////////////////add/////////////////
+    int setNo = getFileId(key);
+    /////////////////add end/////////////////
+
+    char fileName[10];
+    char tempfileName[10];
+    bool keyExists = false;
+    strcpy(tempfileName,"temp");
+    sprintf(fileName,"%d",setNo);
+    strcat(fileName,".csv");
+    strcat(tempfileName,fileName);
+    /////////////////add/////////////////
+    pthread_mutex_lock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    FILE *fp = fopen(fileName,"a");
+    FILE *newFp = fopen(tempfileName,"w");
+    char* storedKey = malloc(sizeof(char)*257);
+    char* storedVal = malloc(sizeof(char)*256*1024+1);
+    while(1){
+        if(fscanf(fp,"%[^,],%[^\n]\n",storedKey,storedVal) == EOF)
+            break;
+        if(!strcmp(key,storedKey)) {
+            keyExists = true;
+            fprintf(newFp,"%s,%s\n",key,val);
+        }
+        else
+            fprintf(newFp,"%s,%s\n",storedKey,storedVal);
+    }
+    if(!keyExists)
+        fprintf(newFp,"%s,%s\n",key,val);
+
+    remove(fileName);
+    // free(fp);
+    rename(tempfileName,fileName);
+
+    /////////////////add/////////////////
+    pthread_mutex_unlock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    fclose(newFp);
+    free(storedKey);
+    free(storedVal);
+    return true;
+}
+
+//returns false if key doesn't exist in the store//
+//TODO:: re-use code of add-key instead of copy-paste
+bool deleteStore(char* key) {
+
+    /////////////////add/////////////////
+    int setNo = getFileId(key);
+    /////////////////add end/////////////////
+
+    char fileName[10];
+    char tempfileName[10];
+    bool keyExists = false;
+    strcpy(tempfileName,"temp");
+    sprintf(fileName,"%d",setNo);
+    strcat(fileName,".csv");
+    strcat(tempfileName,fileName);
+
+    /////////////////add/////////////////
+    pthread_mutex_lock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    FILE *fp = fopen(fileName,"a");
+    FILE *newFp = fopen(tempfileName,"w");
+    char* storedKey = malloc(sizeof(char)*256);
+    char* storedVal = malloc(sizeof(char)*256*1024+1);
+    while(1){
+        if(fscanf(fp,"%[^,],%[^\n]\n",storedKey,storedVal) == EOF)
+            break;
+        if(!strcmp(key,storedKey)) {
+            keyExists = true;
+        }else
+            fprintf(newFp,"%s,%s\n",storedKey,storedVal);
+    }
+
+    remove(fileName);
+    // free(fp);
+    rename(tempfileName,fileName);
+
+    /////////////////add/////////////////
+    pthread_mutex_unlock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    fclose(newFp);
+    free(storedKey);
+    free(storedVal);
+    return keyExists;
+}
+
+char* restoreFromFile(char* key) {
+
+    /////////////////add/////////////////
+    int setNo = getFileId(key);
+    /////////////////add end/////////////////
+    
+    char fileName[10];
+    sprintf(fileName,"%d",setNo);
+    strcat(fileName,".csv");
+
+    /////////////////add/////////////////
+    pthread_mutex_lock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    FILE *fp = fopen(fileName,"r+");
+    if(fp==NULL)
+        return NULL;
+    char* storedKey = malloc(sizeof(char)*256);
+    char* storedVal = malloc(sizeof(char)*256*1024+1);
+    while(1){
+        if(fscanf(fp,"%[^,],%[^\n]\n",storedKey,storedVal) == EOF)
+            break;
+        if(!strcmp(key,storedKey)) {
+            free(storedKey);
+            fclose(fp);
+            pthread_mutex_unlock(&(store.locks[setNo]));
+            return storedVal;
+        }
+    }
+
+    fclose(fp);
+    /////////////////add/////////////////
+    pthread_mutex_unlock(&(store.locks[setNo]));
+    /////////////////add end/////////////////
+
+    free(storedKey);
+    return NULL;
+}
+
+
+void dumpToFileXML(char* filename) {
+
+	FILE *dumpPtr = fopen(filename, "w");
+	char *storedKey = malloc(sizeof(char)*257);
+	char *storedVal = malloc(sizeof(char)*256*1024+1);
+	if(dumpPtr == NULL)
+	{
+		printf("Cannot open xml file!");
+		exit(1);
+	}
+	fprintf(dumpPtr,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<KVStore>\n");
+
+	for (int i = 0; i < 10; ++i) {
+		char fileSet[10];
+		sprintf(fileSet,"%d",i);
+		strcat(fileSet,".csv");
+		FILE *fp = fopen(fileSet,"r+");
+		while(1){
+			if(fscanf(fp,"%[^,],%[^\n]\n",storedKey,storedVal) == EOF)
+				break;
+			fprintf(dumpPtr,"<KVPair>\n<Key>%s</Key>\n<Value>%s</Value>\n</KVPair>\n",storedKey,storedVal);
+		}
+		fclose(fp);
+	}
+	free(storedKey);
+	free(storedVal);
+	fprintf(dumpPtr,"</KVStore>");
+	fclose(dumpPtr);
+}
+
+
+int iniit() {
+    char* key = malloc(sizeof(char)*245);
+    char* val = malloc(sizeof(char)*245);
+    // dumpToFile(1,"sundaram","shivam4");
+    // dumpToFile(1,"key1","val");
+    // deleteStore(1,"radium");
+    // deleteStore(1,"mr");
+    // printf("%s\n",restoreFromFile(1,"sundaram"));
+    // printf("%s\n",restoreFromFile(1,"sundaram"));
+    if(!restoreFromFile("key12"))
+        printf("Not found");
+    return 0;
+}

server/kvstore.h

+#include<stdbool.h>
+bool dumpToFile(char* key,char* val);
+bool deleteStore(char* key);
+char* restoreFromFile(char* key);
+void initStore();
\ No newline at end of file

server/parsexml.c

+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include<unistd.h>
+#include "parsexml.h"
+
+char *toRespXML(char* msg){
+
+	char *line1 = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<KVMessage type=\"resp\">\n<Message>";
+	char *line2 = "</Message>\n</KVMessage>\n";
+	int msglen = strlen(line1)+strlen(line2)+strlen(msg)+1;
+	char *message = (char *)malloc(sizeof(char)*msglen);
+	strcpy(message,line1);
+	strcat(message,msg);
+	strcat(message,line2);
+	// puts("message");
+	// puts(msg);
+	return message;
+
+}
+
+char * toXML(char *reqType, char *key, char * value){
+	
+	char *line1 = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+	char *line21 = "<KVMessage type=\"";
+	char *line22 = "\">\n";
+	char *line31 = "<Key>";
+	char *line32 = "</Key>\n";
+	char *line41 = "<Value>";
+	char *line42 = "</Value>\n";
+	char *line5 = "</KVMessage>\n";
+	int len2 = strlen(line21)+strlen(line22)+strlen(reqType)+1;
+	int len3 = strlen(line31)+strlen(line32)+strlen(key)+1;
+	int len4 = strlen(line41)+strlen(line42)+strlen(value)+1;
+
+	char *line2 = (char *)malloc(sizeof(char) * len2);
+	char *line3 = (char *)malloc(sizeof(char) * len3);
+	char *line4 = (char *)malloc(sizeof(char) * len4);
+
+	strcpy(line2,line21);
+	strcat(line2,reqType);
+	strcat(line2,line22);	
+
+	strcpy(line3,line31);
+	strcat(line3,key);
+	strcat(line3,line32);
+
+	strcpy(line4,line41);
+	strcat(line4,value);
+	strcat(line4,line42);
+
+	int msglen = strlen(line1)+strlen(line2)+strlen(line3)+strlen(line4)+strlen(line5)+1;
+	char *message = (char *)malloc(sizeof(char) * msglen);
+
+	strcpy(message,line1);
+	strcat(message,line2);
+	strcat(message,line3);
+
+	if(!strcmp(reqType,"putreq") || !strcmp(reqType,"resp"))
+		strcat(message,line4);
+
+	strcat(message,line5);
+	free(line2);free(line3);free(line4);
+	return message;
+
+}
+
+char *extractRespXml(FILE *fp,char *buffer){
+	char *p,*q,*err;
+	char *key;
+	char *value;
+	p = strstr(buffer, "<Key>")+5;
+	q = strstr(buffer, "</Key>");
+	if(p!=NULL && q!=NULL){
+		key = malloc(sizeof(char)*(q-p+1));
+		memcpy(key,p,q-p);
+		key[q-p] = '\0';
+		p = strstr(buffer, "<Value>")+ 7;
+		q = strstr(buffer, "</Value>");
+		if(p!=NULL && q!=NULL){
+			value = malloc(sizeof(char)*(q-p+1));
+			memcpy(value,p,q-p);
+			value[q-p] = '\0';
+		}
+		fprintf(fp,"%s,%s\n",key,value);
+		free(key);
+		free(value);
+	}
+	else {
+		p = strstr(buffer, "<Message>")+ 9;
+		q = strstr(buffer, "</Message>");
+		char *message = (char *)malloc(sizeof(char)*170);
+		if(p!=NULL && q!=NULL){
+			memcpy(message,p,q-p);
+			if(!strcmp(message,"Success")){
+				fprintf(fp,"Success\n");
+			} else {
+				fprintf(fp,"Error,%s\n",message);
+			}
+		}
+		free(message);
+	}
+}
+
+
+extReq_t *extractXML(char *buffer){
+	extReq_t *req;
+	req = malloc(sizeof(extReq_t));
+	char *p,*q;
+	req->operation = malloc(sizeof(char)*12);
+	req->err = malloc(sizeof(char)*170);
+	req->val = malloc(sizeof(char)*256*1024+1);
+	req->error=true;
+	p = strstr(buffer, "type=")+ 6;
+	q = strstr(buffer, "\">");
+	if(p==NULL || q==NULL) {
+		strcpy(req->err,"XML Error: Received unparseable message");
+		return req;
+	}
+	else
+		memcpy(req->operation,p,q-p);
+
+	p = strstr(buffer, "<Key>")+5;
+	q = strstr(buffer, "</Key>");
+	if(p==NULL || q==NULL){
+		strcpy(req->err,"XML Error: Received unparseable message");
+		return req;
+	}
+	else if (q-p > 257) {
+		strcpy(req->err ,"Oversized key");
+		return req;
+	}
+	else {
+		req->key = malloc(sizeof(char)*(q-p+1));
+		memcpy(req->key,p,q-p);
+		req->key[q-p] = '\0';
+	}
+	if(!strcmp(req->operation,"putreq")) {
+		p = strstr(buffer, "<Value>")+ 7;
+		q = strstr(buffer, "</Value>");
+		if(p==NULL || q==NULL) {
+			strcpy(req->err,"XML Error: Received unparseable message");
+			return req;
+		}
+		else if (q-p>1024*257+2) {
+			strcpy(req->err,"Oversized value");
+			return req;
+		}
+		else{
+			req->val = realloc(req->val,sizeof(char)*(q-p+1));
+			memcpy(req->val,p,q-p);
+			req->val[q-p] = '\0';
+		}
+	}
+	req->error = false;
+	return req;
+
+}
\ No newline at end of file

server/parsexml.h

+#include<stdio.h>
+#include<stdbool.h>
+struct extractedReq {
+    char* key;
+    char* val;
+    char* operation;
+    char* err;
+    bool error;
+};
+typedef struct extractedReq extReq_t;
+char *toXML(char *reqType, char *key, char * value);
+extReq_t *extractXML(char *buffer);
+char *toRespXML(char* msg);
+char *extractRespXml(FILE *fp,char *buffer);

server/rpc/Makefile

+.SUFFIXES:
+.SUFFIXES: .c .o
+CLNT = llist
+SRVR = llist_svc
+CFLAGS = -g -Wall
+
+SRVR_OBJ = llist_svc_proc.o llist_xdr.o llist_svc.o
+# CLNT_OBJ = llist.o llist_xdr.o llist_clnt.o
+
+.c.o:; gcc -c -o $@ $(CFLAGS) $<
+
+default: $(SRVR)
+
+$(CLNT): $(CLNT_OBJ)
+	gcc -o $(CLNT) $(CLNT_OBJ)
+
+$(SRVR): $(SRVR_OBJ)
+	gcc -o $(SRVR) $(SRVR_OBJ)
+
+clean:
+	rm -f *.o 
+	rm -f llist llist_svc
\ No newline at end of file

server/threadPool.c

+#include"parsexml.h"
+#include <stdbool.h>
+#include <stddef.h>
+#include<stdlib.h>
+#include<stdio.h>
+#include<unistd.h>
+#include<pthread.h>
+#include<string.h>
+#include"KVCache.h"
+#include "threadPool.h"
+
+
+struct request {
+    tFunction func;
+    char *arg;
+    int clientFD;
+    struct request *next;
+};
+typedef struct request request_t;
+
+struct tpool {
+    request_t    *first;
+    request_t    *work_last;
+    pthread_mutex_t  queueLock;
+    pthread_cond_t   threadWait;
+    pthread_cond_t   producerWait;
+    size_t           workingCount;
+    size_t           activeThreads;
+    bool             stop;
+};
+
+static request_t *createJob(tFunction func, void *arg,int clientFD)
+{
+    request_t *work;
+
+    if (func == NULL)
+        return NULL;
+
+    work       = malloc(sizeof(*work));
+    work->func = func;
+    work->arg  = arg;
+    work->clientFD = clientFD;
+    work->next = NULL;
+    return work;
+}
+
+static void deleteJob(request_t *work)
+{
+    if (work == NULL)
+        return;
+    free(work);
+}
+
+static request_t *tpoolGetRequest(tpool_t *tm)
+{
+    request_t *work;
+
+    if (tm == NULL)
+        return NULL;
+
+    work = tm->first;
+    if (work == NULL)
+        return NULL;
+
+    if (work->next == NULL) {
+        tm->first = NULL;
+        tm->work_last  = NULL;
+    } else {
+        tm->first = work->next;
+    }
+    return work;
+}
+
+static void *threadMainFunction(void *arg)
+{
+    tpool_t      *tm = arg;
+    request_t *work;
+
+    while (1) {
+        pthread_mutex_lock(&(tm->queueLock));
+        if (tm->stop)
+            break;
+
+        if (tm->first == NULL) {
+            pthread_cond_wait(&(tm->threadWait), &(tm->queueLock));
+        }
+        work = tpoolGetRequest(tm);
+        tm->workingCount++;
+        pthread_mutex_unlock(&(tm->queueLock));
+
+        if (work != NULL) {
+            work->func(work->arg);
+            write(work->clientFD,work->arg,sizeof(char)*strlen(work->arg));
+            deleteJob(work);
+        }
+
+        pthread_mutex_lock(&(tm->queueLock));
+        tm->workingCount--;
+        if (!tm->stop && tm->workingCount == 0 && tm->first == NULL)
+            pthread_cond_signal(&(tm->producerWait));
+        pthread_mutex_unlock(&(tm->queueLock));
+    }
+
+    tm->activeThreads--;
+    pthread_cond_signal(&(tm->producerWait));
+    pthread_mutex_unlock(&(tm->queueLock));
+    return NULL;
+}
+
+tpool_t *createThreadPool(size_t num)
+{
+    tpool_t   *tm;
+    pthread_t  thread;
+    size_t     i;
+
+    if (num == 0)
+        num = 2;
+
+    tm             = calloc(1, sizeof(*tm));
+    tm->activeThreads = num;
+
+    pthread_mutex_init(&(tm->queueLock), NULL);
+    pthread_cond_init(&(tm->threadWait), NULL);
+    pthread_cond_init(&(tm->producerWait), NULL);
+
+    tm->first = NULL;
+    tm->work_last  = NULL;
+
+    for (i=0; i<num; i++) {
+        pthread_create(&thread, NULL, threadMainFunction, tm);
+        pthread_detach(thread);
+    }
+
+    return tm;
+}
+void destroyThreadPool(tpool_t *tm)
+{
+    request_t *work;
+    request_t *work2;
+
+    if (tm == NULL)
+        return;
+
+    pthread_mutex_lock(&(tm->queueLock));
+    work = tm->first;
+    while (work != NULL) {
+        work2 = work->next;
+        deleteJob(work);
+        work = work2;
+    }
+    tm->stop = true;
+    pthread_cond_broadcast(&(tm->threadWait));
+    pthread_mutex_unlock(&(tm->queueLock));
+
+    tpoolWait(tm);
+
+    pthread_mutex_destroy(&(tm->queueLock));
+    pthread_cond_destroy(&(tm->threadWait));
+    pthread_cond_destroy(&(tm->producerWait));
+
+    free(tm);
+}
+
+bool addRequestToQueue(tpool_t *tm, tFunction func, void *arg,int clientFD)
+{
+    request_t *work;
+    int msglen = 1024*257+170;
+    char* copyBuffer = (char*)malloc(sizeof(char)*msglen);
+    strcpy(copyBuffer,arg);
+    if (tm == NULL)
+        return false;
+    work = createJob(func, copyBuffer,clientFD);
+    if (work == NULL)
+        return false;
+    pthread_mutex_lock(&(tm->queueLock));
+    if (tm->first == NULL) {
+        tm->first = work;
+        tm->work_last  = tm->first;
+    } else {
+        tm->work_last->next = work;
+        tm->work_last       = work;
+    }
+    pthread_cond_signal(&(tm->threadWait));
+    pthread_mutex_unlock(&(tm->queueLock));
+    return true;
+}
+
+void tpoolWait(tpool_t *tm)
+{
+    if (tm == NULL)
+        return;
+
+    pthread_mutex_lock(&(tm->queueLock));
+    while (1) {
+        if ((!tm->stop && tm->workingCount != 0) || (tm->stop && tm->activeThreads != 0)) {
+            pthread_cond_wait(&(tm->producerWait), &(tm->queueLock));
+        } else {
+            break;
+        }
+    }
+    pthread_mutex_unlock(&(tm->queueLock));
+}
+
+void worker(char *arg)
+{
+    int *val = (int*)arg;
+    int  old = *val;
+
+    *val += 1000;
+    printf("tid=%ld, old=%d, val=%d\n", pthread_self(), old, *val);
+
+    if (*val%2)
+        usleep(100000);
+}
+static const size_t num_threads = 4;
+static const size_t num_items   = 5;
+
+int init(int argc, char **argv)
+{
+    tpool_t *tm;
+    int     *vals;
+    size_t   i;
+
+    tm   = createThreadPool(num_threads);
+    vals = calloc(num_items, sizeof(*vals));
+    char* buffer[10];
+    buffer[0] = malloc(sizeof(char)*1025);
+    buffer[1] = malloc(sizeof(char)*1025);
+    buffer[2] = malloc(sizeof(char)*1025);
+    buffer[3] = malloc(sizeof(char)*1025);
+    char* key = malloc(sizeof(char)*256+1);
+    char* value = malloc(sizeof(char)*256*1024 +1);
+    char* operation = malloc(sizeof(char)*7);
+    char* cacheptr =  buildCache(2, 2);
+    strcpy(buffer[0],"<?xml version=\"1.0\" encoding=\"UTF-8\"?><KVMessage type=\"putreq\"><Key>5</Key><Value>25</Value></KVMessage>");
+    strcpy(buffer[1],"<?xml version=\"1.0\" encoding=\"UTF-8\"?><KVMessage type=\"getreq\"><Key>5</Key><Value></Value></KVMessage>");
+    strcpy(buffer[2],"<?xml version=\"1.0\" encoding=\"UTF-8\"?><KVMessage type=\"delreq\"><Key>5</Key><Value></Value></KVMessage>");
+    strcpy(buffer[3],"<?xml version=\"1.0\" encoding=\"UTF-8\"?><KVMessage type=\"getreq\"><Key>5</Key><Value></Value></KVMessage>");
+    for (i=0; i<4; i++) {
+        vals[i] = i;
+        addRequestToQueue(tm, decodeRequestAndProcess, buffer[i],1);
+    }
+    tpoolWait(tm);
+    free(vals);
+    destroyThreadPool(tm);
+    return 0;
+}
+
+void decodeRequestAndProcess(char* buffer) {
+    extReq_t *request;
+    // char* key;
+    // char* value = (char *)malloc(sizeof(char)*1024*256+1);
+    // char* operation = (char *)malloc(sizeof(char)*7);
+    // char* err = (char *)malloc(sizeof(char)*170);
+    request = extractXML(buffer);
+    if(request->error){
+        strcpy(buffer,toRespXML(request->err));
+        return;
+    }
+    puts("key");
+    puts(request->key);
+    if(!strcmp(request->operation,"putreq")){
+        puts("putreq");
+        addKey(request->key,request->val);
+        strcpy(buffer,toRespXML("Success"));
+        // puts("buffer");
+        // puts(buffer);
+    }
+    else if(!strcmp(request->operation,"getreq")){
+        puts("getreq");
+        if(searchKey(request->key,request->val))
+            strcpy(buffer,toXML("resp",request->key,request->val));
+        else
+            strcpy(buffer,toRespXML("Does not exist"));
+        // puts("buffer");
+        // puts(buffer);
+    }
+    else if (!strcmp(request->operation,"delreq")){
+        puts("delreq");
+        if(deleteKey(request->key))
+            strcpy(buffer,toRespXML("Success"));
+        else
+            strcpy(buffer,toRespXML("Does not exist"));
+        // puts("buffer");
+        // puts(buffer);
+    }
+    // free(key);
+    // free(value);
+    // free(operation);
+    free(request);
+ //   toXMLCache();
+}
\ No newline at end of file

server/threadPool.h

+#define __TPOOL_H__
+#include <stdbool.h>
+struct tpool;
+typedef struct tpool tpool_t;
+
+typedef void (*tFunction)(char *arg);
+
+tpool_t *createThreadPool(size_t num);
+void destroyThreadPool(tpool_t *tm);
+void decodeRequestAndProcess(char* buffer);
+
+bool addRequestToQueue(tpool_t *tm, tFunction func, void *arg,int clientFD);
+void tpoolWait(tpool_t *tm);
\ No newline at end of file