--- joko/Uni/BSArch/04/bmp_fractal.c 2006/07/02 09:27:14 1.12 +++ joko/Uni/BSArch/04/bmp_fractal.c 2006/07/02 12:08:10 1.15 @@ -5,7 +5,7 @@ * Uebung 4.4 */ -// $Id: bmp_fractal.c,v 1.12 2006/07/02 09:27:14 joko Exp $ +// $Id: bmp_fractal.c,v 1.15 2006/07/02 12:08:10 joko Exp $ #include #include @@ -49,12 +49,12 @@ 0, NULL )) { - fprintf(stdout, "%s: %s\n", msg, lpMsgBuf); + fprintf(stderr, "%s: %s\n", msg, lpMsgBuf); LocalFree(lpMsgBuf); } else { - fprintf(stdout, "Error at FormatMesage: %d\n",err=GetLastError()); + fprintf(stderr, "Error at FormatMesage: %d\n",err=GetLastError()); } exit(err); } @@ -68,7 +68,7 @@ // open file handle fd = fopen(filename, "wb+"); if (NULL == fd) { - perror("open"); + perror("Error while opening file for writing"); exit(1); } @@ -77,7 +77,7 @@ // error checking if (-1 == len || len != sizeof(header)) { - perror("write"); + perror("Error while writing header to file"); exit(2); } @@ -86,7 +86,7 @@ for (i = 0; i < img_size; i++) { len = fwrite("\0\0\0", 1, 3, fd); if (-1 == len || len != 3) { - perror("write"); + perror("Error while writing data to file"); exit(4); } } @@ -156,6 +156,27 @@ } +//BOOL scan_argv(int argc, char *argv[], char opt_name[], char *opt_value[]) { +BOOL scan_argv(int argc, char *argv[], char opt_name[], char *opt_value) { + int i; + char * opt_current_name; + char * opt_current_value; + + //printf("searching for: '%s'\n", opt_name); + + for (i = 1; i < argc; i++) { + opt_current_name = argv[i]; + if (strcmp(opt_current_name, opt_name) == 0) { + opt_current_value = argv[i+1]; + if (opt_current_value != NULL) { + strcpy(opt_value, opt_current_value); + } + return TRUE; + } + } + return FALSE; +} + int main(int argc, char *argv[]) { @@ -172,24 +193,56 @@ PWORKERARGS worker_args; // threads or processes? - BOOL use_processes = TRUE; + BOOL use_processes = FALSE; BOOL is_worker_process = FALSE; // information for creating processes STARTUPINFO si; PROCESS_INFORMATION pi; - char szCmdline[1024]; + char szCmdline[65536]; + // command line stuff + char arg_option[1024]; + char arg_value[1024]; + char *bmp_filename; + char *verbose_option = ""; - VERBOSE = TRUE; + + // parse command line arguments + if (argc < 2) { + fprintf(stderr, "Can not run without arguments!\nPlease specify '-t {number of threads}' or '-p {number of processes}' and an image filename.\n"); + exit(EXIT_FAILURE); + } - // "parse" command line arguments - if (argc >= 2) { - if (strcmp(argv[1], "--worker") == 0) { - is_worker_process = TRUE; + if (scan_argv(argc, argv, "--verbose", arg_value)) { + VERBOSE = TRUE; + } + + if (scan_argv(argc, argv, "--worker", arg_value)) { + use_processes = TRUE; + is_worker_process = TRUE; + + } else if (scan_argv(argc, argv, "-p", arg_value)) { + if (strlen(arg_value) == 0) { + fprintf(stderr, "Please specify number of processes!\n"); + exit(EXIT_FAILURE); } + use_processes = TRUE; + is_worker_process = FALSE; + workers = atoi(arg_value); + + } else if (scan_argv(argc, argv, "-t", arg_value)) { + if (strlen(arg_value) == 0) { + fprintf(stderr, "Please specify number of threads!\n"); + exit(EXIT_FAILURE); + } + use_processes = FALSE; + is_worker_process = FALSE; + workers = atoi(arg_value); + } + if (VERBOSE && use_processes) { fprintf(stdout, "===================================================== "); if (is_worker_process) @@ -197,16 +250,23 @@ else fprintf(stdout, "MASTER-PROCESS\n"); } - - // create empty bmp-file (black background) - if (!is_worker_process) - write_blank_file("test.bmp"); - // master creates memory mapped file + + // master creates memory mapped file ("empty" image) if (!is_worker_process) { + if (argc < 4) { + fprintf(stderr, "Must give filename of image as third argument!\n"); + exit(EXIT_FAILURE); + } + + bmp_filename = argv[3]; + + // create empty bmp-file (black background) + write_blank_file(bmp_filename); + // open file for reading and writing - hFile = CreateFile("test.bmp", GENERIC_WRITE|GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + hFile = CreateFile(bmp_filename, GENERIC_WRITE|GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (INVALID_HANDLE_VALUE == hFile) { err = GetLastError(); printErrorAndExit("Error at CreateFile",err); @@ -255,7 +315,7 @@ // allocate memory for one worker's arguments if ((worker_args = malloc(sizeof(worker_args[0]))) == NULL) - perror("malloc"), exit(1); + perror("Error while allocating memory for worker arguments via malloc"), exit(1); // assign worker's arguments worker_args[0].start_row = worker_startrow; @@ -268,7 +328,7 @@ if (!CloseHandle(hMap)) printErrorAndExit("Error at CloseHandle", GetLastError()); - return 0; + return 0; } /* @@ -288,11 +348,11 @@ // allocate memory for table of all worker handles if ((worker_handles = malloc(workers * sizeof(worker_handles[0]))) == NULL) - perror("malloc"), exit(1); + perror("Error while allocating memory for worker handles via malloc"), exit(1); // allocate memory for table of all worker arguments if ((worker_args = malloc(workers * sizeof(worker_args[0]))) == NULL) - perror("malloc"), exit(1); + perror("Error while allocating memory for worker arguments via malloc"), exit(1); // calculate bitmap segment length for workers @@ -338,7 +398,9 @@ } else { - _snprintf(szCmdline, 1023, "%s %s %i %i", argv[0], "--worker", worker_startrow, worker_rows); + if (VERBOSE) + verbose_option = "--verbose"; + _snprintf(szCmdline, 1023, "%s %s %i %i %s", argv[0], "--worker", worker_startrow, worker_rows, verbose_option); if (VERBOSE) fprintf(stdout, "starting worker process: %s\n", szCmdline); ZeroMemory( &si, sizeof(si) ); @@ -369,7 +431,7 @@ if (VERBOSE) fprintf(stdout, "waiting for workers to finish...\n"); if (WaitForMultipleObjects(workers, worker_handles, TRUE, INFINITE) == WAIT_FAILED) - perror("WaitForMultipleObjects"); + printErrorAndExit("Error at WaitForMultipleObjects", GetLastError()); // debugging: just run single thread //if (WaitForSingleObject(worker_handles[0], INFINITE) == WAIT_FAILED)