int main(int argc, char *argv[]) {
/* Check if there is enough arguments. */
if(argc < 3 || argc > 4)
ExitFailure("Parameter(s): <Server Address> <String> [<Server Port>]");
/* First arg : server IP address (dotted quad)
* Second arg: string to echo
* Third arg : server port
* If no port is provided, we used 7 since it is usually used
* for testing server.
*/
char *servIP = argv[1];
char *echoString = argv[2];
in_port_t servPort = (argc == 4)?atoi(argv[3]):7;
/* Create a reliable, stream socket using TCP. */
int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sock < 0)
ExitFailure("socket() failed");
/* Construct the server address structure. */
struct sockaddr_in servAddr; /* server address */
memset(&servAddr, 0, sizeof(servAddr)); /* zero out structure */
servAddr.sin_family = AF_INET; /* IPv4 address family */
/* Convert address. */
int rtnVal = inet_pton(AF_INET, servIP, &servAddr.sin_addr.s_addr);
if(rtnVal == 0)
ExitFailure("inet_pton() failed: invalid address string");
else if(rtnVal < 0)
ExitFailure("inet_pton() failed");
servAddr.sin_port = htons(servPort); /* Server port */
/* Establish the connection to the echo server. */
if(connect(sock, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
ExitFailure("connect() failed");
/* Determine the input length. */
size_t echoStringLen = strlen(echoString);
/* Send the string to the server. */
ssize_t numBytes = send(sock, echoString, echoStringLen+1, 0);
sleep(2);
numBytes = send(sock, echoString, echoStringLen+1, 0);
/* Receive the same string back from the server. */
unsigned int totalBytesRcvd = 0;
fputs("Received: ", stdout);
while (totalBytesRcvd < echoStringLen) {
char buffer[BUFFSIZE];
/* Receive up to the buffer size (minus the null-terminated character)
* bytes from the sender.
*/
numBytes = recv(sock, buffer, BUFFSIZE-1, 0);
if(numBytes < 0)
ExitFailure("recv() failed");
else if(numBytes == 0)
ExitFailure("recv(): connection closed prematurely");
totalBytesRcvd += numBytes; /* Count the total of byte. */
buffer[numBytes] = '\0'; /* Terminated the string. */
fputs(buffer, stdout); /* Print the echo buffer. */
}
fputc('\n', stdout);
close(sock);
return 0;
}
int main( int argc, char *argv[] )
{
FILE *output, *input; // File pointers for the data that will be read in and written out.
double programRunTime; // The amount of time a this program took to complete execution.
int processCount; // The total number of processes we have including PI_Main.
int workerCount; // The max number of workers this program run can utilize.
// Setup our program, calculate how many workers we have.
processCount = PI_Configure( &argc, &argv );
workerCount = processCount - 1;
PI_StartTime();
if(argc != 2){ // If after setting up our program, we don't have a string for a file argument, abort this run.
return ExitFailure(", Error: No input file specified.", __FILE__, __LINE__);
}
// Create the workers based off worker count, and the channels/bundles between the workers and PI_Main.
SetupWorkers(workerCount);
//**********//
PI_StartAll();
//**********//
// File opening
output = fopen("pal.out", "a");
input = fopen(argv[1], "r");
// File error checking.
if(output==NULL){
return ExitFailure("Could not open output file 'pal.out' for appending in current directory.", __FILE__, __LINE__);
}
if(input==NULL){
return ExitFailure("Could not open input file for reading, from path in argv[1].", __FILE__, __LINE__);
}
else{
printf(">> Input file is: '%s'\n", argv[1]);
}
// Run serial or parallel algorithm.
if(workerCount == 0){
Serial(input, output);
}
else{
Parallel(input, output, workerCount);
}
// Clean up our program run.
fclose(output);
fclose(input);
free(toWorker);
free(Worker);
free(result);
printf(">> Exiting... <<\n");
programRunTime = PI_EndTime();
printf("\n\n>>< PROGRAM EXECUTION TIME: (%.2f)s ><<\n\n\n", programRunTime);
PI_StopMain(0);
return EXIT_SUCCESS;
}
/*
Performs all the work in the parallel version of this program. Is not run in serial version of this program (when workerCount == 0).
- Loops accepting data from PI_Main until END_OF_DATA message is recieved.
- Each time data is recieved the data is processed, the results appended to the variable 'pallindromes' and then this worker tells PI_Main it is ready for more data.
- When END_OF_DATA message is recieved, this worker sends PI_Main the contents of the variable 'pallindromes'.
*/
int workerFunc( int index, void* arg2 )
{
int pallindromesCount = 0;// How many pallindromes have been found so far
int maxPallindromes = 32; // The maximum number of pallindromes that can be held by this worker. This will grow dynamically to keep up as the worker finds more and more pallindromes.
int startingLine = 0; // The starting line of the data sent from PI_Main. Data from PI_Main is assumed to be a continous set of lines from the input file.
int dataLength = 0; // The number of chars (+ 1 for '\0') contained in the last data sent from PI_Main.
int lineIndex = 0; // The current index of a temporary string, used to parse the data from PI_Main. The string this indexes is sent to function 'LineIsPalindrome()'.
int curLine; // The running counter of what line we are on in the file. 'curLine' starts at startingLine, and is incremented everytime a '\n' is found in variable 'data' from PI_Main.
int i; // Generic iterator variable, used to loop through the data sent from PI_Main.
char line[MAX_LINE_LENGTH]; // A single line from the input file. Parsed out of the data sent from PI_Main in the variable 'data'.
char *pallindromes; // The output from this worker, 'pallindromes' will be returned to PI_Main when this workers recieves END_OF_DATA as a line number.
// Simply a list of all the lines in the input file that are pallindromes, seperated by newlines.
char *data = NULL; // The data sent from PI_Main, LINES_BEFORE_SENDING number of lines or less. This is a continous string, each line must be parsed out by looking for '\n's.
// Malloc pallindromes to a default starting size
pallindromes = (char *)malloc(sizeof(char) * maxPallindromes * MAX_OUTPUT_LINE_LENGTH);
while(1){
// Tell PI_Main this worker is ready for data.
PI_Write( result[index], "%c", READY_FOR_DATA);
// Wait until PI_Main sends this worker something.
PI_Read( toWorker[index], "%d", &startingLine);
// If PI_Main sends us the END_OF_DATA signal, we're done, otherwise we should work on the data recieved.
if(startingLine == END_OF_DATA){
break;
}
// If PI_Main didn't send us END_OF_DATA, then PI_MAIN must have data for us to work on.
PI_Read( toWorker[index], "%^s", &dataLength, &data );
// Once we have the data, initalize the workers line counter.
curLine = startingLine;
// Go through each char of the data recieved in order to parse it.
for(i = 0; i < dataLength; i++){
// Copy the data from PI_Main into a single line.
line[lineIndex] = data[i];
lineIndex++;
// If we encounter a char that represents the end of a line, we have a line, and we should figure out if it is a pallindrome.
if(data[i] == '\n' || data[i] == '\0'){
line[lineIndex - 1] = '\0';// Cap the line, so it becomes a proper C style string.
if(LineIsPalindrome(line)){
if(pallindromesCount >= maxPallindromes){ // If we've run out of space to store line numbers of lines that are pallindromes,
maxPallindromes = maxPallindromes * 2; // have this worker allocate more space. Double the amount of space we allocate each time in an attempt to
pallindromes = (char *)realloc(pallindromes, sizeof(char) * maxPallindromes * MAX_OUTPUT_LINE_LENGTH); // balance performance and memory usage.
if(pallindromes == NULL){
ExitFailure("Error reallocing...", __FILE__, __LINE__);
}
}
// Save the line number to our workers output string, (if it is a pallindrome), and increment the number of pallindromes we've found.
sprintf(&(pallindromes[pallindromesCount * MAX_OUTPUT_LINE_LENGTH]), "%010d\n", curLine);
pallindromesCount++;
}
// Prepare to continue reading the data sent from PI_Main.
curLine++;
line[0] = '\0';
lineIndex = 0;
}
}
free(data);
}
printf(">> Worker %d recieived end of data message\n\n", index);
// Send PI_Main the results of this workers work.
PI_Write( result[index], "%^s", strlen(pallindromes) + 1, pallindromes);
free(pallindromes);
return 0;
}
int main(int argc, char *argv[])
{
int opt;
struct option longopts[] = {
{"help", 0, NULL, 'h'},
{"version", 0, NULL, 'v'},
{"about", 0, NULL, 'a'},
{"error", 1, NULL, 'e'},
{"log", 1, NULL, 'l'},
{"output", 1, NULL, 'o'},
{"test0", 1, NULL, '0'},
{"test1", 1, NULL, '1'},
{"test2", 1, NULL, '2'},
{"test3", 1, NULL, '3'},
{"test4", 1, NULL, '4'},
{0, 0, 0, 0}
};
simulator_ *simulator = NULL;
char *outFileName = NULL;
FILE *outFile = stdout;
double R, dc, Z0, Td, loss;
double *data;
char **variables;
int numPoints, numVariables, i;
double pulseD[7] = { 0, 10, 10e-9, 2e-9, 3e-9, 5e-9, 20e-9 };
double *pulse[7] = { &pulseD[0], &pulseD[1], &pulseD[2], &pulseD[3],
&pulseD[4], &pulseD[5], &pulseD[6] };
double gaussD[7] = { 0, 3.3, 2e-9, 1e-9, 0.5e-9, 5e-9, 12e-9 };
double *gauss[7] = { &gaussD[0], &gaussD[1], &gaussD[2], &gaussD[3],
&gaussD[4], &gaussD[5], &gaussD[6] };
/* Process the command line options */
while((opt = getopt_long(argc,argv,"hvae:l:01234o:",longopts,NULL)) != -1) {
switch(opt) {
case '0':
/* Create a new simulator object */
simulator = simulatorNew(simulator);
ExitFailureIf(simulator == NULL);
R = 10;
dc = 10;
ExitFailureIf(simulatorAddResistor(simulator, "R1", "n1", "0", &R));
ExitFailureIf(simulatorAddSource(simulator, "V1", "n1", "0",'v',
&dc, 0x0, NULL));
ExitFailureIf(simulatorRunOperatingPoint(simulator,
&data, &variables, &numPoints, &numVariables));
print(outFile, data, variables, numVariables);
/* Destroy the Scripter Object */
if(simulatorDestroy(&simulator)) {
Warn("Failed to close simulator");
}
free(data);
free(variables);
break;
case '1':
/* Create a new simulator object */
simulator = simulatorNew(simulator);
ExitFailureIf(simulator == NULL);
R = 10; Z0 = 50; Td = 15e-9; loss = 0.2;
ExitFailureIf(simulatorAddResistor(simulator, "R1", "n1", "n2", &R));
ExitFailureIf(simulatorAddSource(simulator, "V1", "n1", "0",'v',
NULL, 'p', pulse));
ExitFailureIf(simulatorAddTLine(simulator, "T2", "n2", "0", "n3",
"0", &Z0, &Td, &loss));
ExitFailureIf(simulatorRunTransient(simulator,
0.1e-9, 50e-9, 0.0, 0,
&data, &variables, &numPoints, &numVariables));
plot(outFile, data, variables, numPoints, numVariables);
/* Destroy the Scripter Object */
if(simulatorDestroy(&simulator)) {
Warn("Failed to close simulator");
}
free(data);
free(variables);
break;
case '2':
/* Create a new simulator object */
simulator = simulatorNew(simulator);
ExitFailureIf(simulator == NULL);
R = 10; Z0 = 50; Td = 15e-9; loss = 0.2;
ExitFailureIf(simulatorAddResistor(simulator, "R1", "n1", "n2", &R));
ExitFailureIf(simulatorAddSource(simulator, "V1", "n1", "0",'v',
NULL, 'p', pulse));
ExitFailureIf(simulatorAddTLine(simulator, "T2", "n2", "0", "n3",
"0", &Z0, &Td, &loss));
for(i = 0; i < 100; i++) {
ExitFailureIf(simulatorRunTransient(simulator,
0.1e-9, 50e-9, 0.0, 0,
&data, &variables, &numPoints, &numVariables));
}
//plot(outFile, data, variables, numPoints, numVariables);
/* Destroy the Scripter Object */
if(simulatorDestroy(&simulator)) {
Warn("Failed to close simulator");
}
free(data);
free(variables);
break;
case '3':
/* Create a new simulator object */
simulator = simulatorNew(simulator);
ExitFailureIf(simulator == NULL);
double L0[4] = {231.832e-9, 38.1483e-9, 38.1483e-9, 231.819e-9};
double *L0p = L0;
double C0[4] = {156.163e-12, -8.60102e-12,-8.60102e-12, 156.193e-12};
double *C0p = C0;
double R0[4] = {0.861113, 0, 0, 0.861113};
double *R0p = R0;
double G0[4] = {0,0,0,0};
double *G0p = G0;
double Rs[4] = {0.368757e-3, 0,0, 0.368757e-3};
double *Rsp = Rs;
double Gd[4] = {0,0,0,0};
double *Gdp = Gd;
char *nodes[6] = {"1", "3", "0", "2", "4", "0"};
int M = 9;
double len = 0.0265;
double fgd = 1e100;
double fK = 1e9;
ExitFailureIf(simulatorAddResistor(simulator, "R1", "n1", "n2", &R));
ExitFailureIf(simulatorAddSource(simulator, "V1", "n1", "0",'v',
NULL, 'p', pulse));
ExitFailureIf(simulatorAddTLineW(simulator,
"T1", nodes, 6, &M, &len, &L0p, &C0p, &R0p, &G0p, &Rsp,
&Gdp, &fgd, &fK));
/* Destroy the Scripter Object */
if(simulatorDestroy(&simulator)) {
Warn("Failed to close simulator");
}
//free(data);
//free(variables);
break;
case '4':
/* Create a new simulator object */
simulator = simulatorNew(simulator);
ExitFailureIf(simulator == NULL);
ExitFailureIf(simulatorAddSource(simulator, "V1", "n1", "0",'v',
NULL, 'g', gauss));
ExitFailureIf(simulatorRunTransient(simulator,
0.01e-9, 50e-9, 0.0, 0,
&data, &variables, &numPoints, &numVariables));
plot(outFile, data, variables, numPoints, numVariables);
/* Destroy the Scripter Object */
if(simulatorDestroy(&simulator)) {
Warn("Failed to close simulator");
}
free(data);
free(variables);
break;
case 'a':
case 'v': version(); ExitSuccess;
case 'o':
outFileName = optarg;
outFile = fopen(outFileName, "wb");
ExitFailureIf(outFile == NULL, "Failed to open %s for output",
outFileName);
break;
case 'e': OpenErrorFile(optarg); break;
case 'l': OpenLogFile(optarg); break;
case 'h': help(); ExitSuccess;
case '?': ExitFailure("Unkown option");
case ':': ExitFailure("Option needs a value");
default: help(); ExitFailure("Invalid option");
}
}
if(outFileName != NULL) {
fclose(outFile);
}
CloseErrorFile;
CloseLogFile;
ExitSuccess;
}
