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#define YSIZE 500 |
#define YSIZE 500 |
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#include "algorithm.h" |
#include "algorithm.h" |
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#define MAX_COMMAND_LINE 65536 |
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#define MMAP_NAME "bmp_fractal" |
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BOOL VERBOSE = FALSE; |
BOOL VERBOSE = FALSE; |
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95 |
} |
} |
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// close file handle |
// close file handle |
98 |
fclose(fd); |
if (fclose(fd) != 0) { |
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perror("Error while closing file handle"); |
100 |
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exit(1); |
101 |
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} |
102 |
} |
} |
103 |
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104 |
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int x, y; |
int x, y; |
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char bgr[3]; |
char bgr[3]; |
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thread_id = GetCurrentThreadId(); |
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// get worker arguments |
// get worker arguments |
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args = (PWORKERARGS)lpParam; |
args = (PWORKERARGS)lpParam; |
126 |
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129 |
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// debugging |
// debugging |
131 |
if (VERBOSE) { |
if (VERBOSE) { |
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thread_id = GetCurrentThreadId(); |
133 |
fprintf(stdout, "----------------------------------------------\n"); |
fprintf(stdout, "----------------------------------------------\n"); |
134 |
fprintf(stdout, "thread_id: %i\n", thread_id); |
fprintf(stdout, "thread_id: %i\n", thread_id); |
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fprintf(stdout, "arg.start_row: %i\n", args->start_row); |
fprintf(stdout, "arg.start_row: %i\n", args->start_row); |
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for (y = (args->start_row + args->number_of_rows) - 1; y >= args->start_row; y--) { |
for (y = (args->start_row + args->number_of_rows) - 1; y >= args->start_row; y--) { |
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//fprintf(stdout, "calc: thread=%i; y=%i limits: %i,%i p: %p\n", thread_id, y, args->start_row, args->number_of_rows, pDataBitmapSegment); |
//fprintf(stdout, "calc: thread=%i; y=%i limits: %i,%i p: %p\n", thread_id, y, args->start_row, args->number_of_rows, pDataBitmapSegment); |
143 |
for (x = 0; x < XSIZE; x++) { |
for (x = 0; x < XSIZE; x++) { |
144 |
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145 |
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// call to function in static linked library |
146 |
getColorValuesAt(x * (2.0 / XSIZE) - 1.5, y * (2.0 / YSIZE) - 1.0, &bgr[2], &bgr[1], &bgr[0]); |
getColorValuesAt(x * (2.0 / XSIZE) - 1.5, y * (2.0 / YSIZE) - 1.0, &bgr[2], &bgr[1], &bgr[0]); |
147 |
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148 |
// transfer color values to current pixel |
// transfer color values to current pixel |
206 |
// information for creating processes |
// information for creating processes |
207 |
STARTUPINFO si; |
STARTUPINFO si; |
208 |
PROCESS_INFORMATION pi; |
PROCESS_INFORMATION pi; |
209 |
char szCmdline[65536]; |
char szCmdline[MAX_COMMAND_LINE]; |
210 |
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211 |
// command line stuff |
// command line stuff |
212 |
char arg_option[1024]; |
char arg_option[1024]; |
215 |
char *verbose_option = ""; |
char *verbose_option = ""; |
216 |
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217 |
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218 |
// parse command line arguments |
// check command line arguments |
219 |
if (argc < 2) { |
if (argc < 2) { |
220 |
fprintf(stderr, "Can not run without arguments!\nPlease specify '-t {number of threads}' or '-p {number of processes}' and an image filename.\n"); |
fprintf(stderr, "Can not run without arguments!\nPlease specify '-t {number of threads}' or '-p {number of processes}' and an image filename.\n"); |
221 |
exit(EXIT_FAILURE); |
exit(EXIT_FAILURE); |
222 |
} |
} |
223 |
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224 |
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225 |
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// parse command line arguments |
226 |
if (scan_argv(argc, argv, "--verbose", arg_value)) { |
if (scan_argv(argc, argv, "--verbose", arg_value)) { |
227 |
VERBOSE = TRUE; |
VERBOSE = TRUE; |
228 |
} |
} |
282 |
} |
} |
283 |
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284 |
// create the file mapping object |
// create the file mapping object |
285 |
hMap = CreateFileMapping(hFile, NULL, PAGE_READWRITE, 0, 0, "bmp_fractal"); |
hMap = CreateFileMapping(hFile, NULL, PAGE_READWRITE, 0, 0, MMAP_NAME); |
286 |
if (NULL == hMap) { |
if (NULL == hMap) { |
287 |
printErrorAndExit("Error at CreateFileMapping", GetLastError()); |
printErrorAndExit("Error at CreateFileMapping", GetLastError()); |
288 |
} |
} |
291 |
} else { |
} else { |
292 |
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293 |
// open existing mapping object |
// open existing mapping object |
294 |
hMap = OpenFileMapping(FILE_MAP_WRITE, FALSE, "bmp_fractal"); |
hMap = OpenFileMapping(FILE_MAP_WRITE, FALSE, MMAP_NAME); |
295 |
if (NULL == hMap) |
if (NULL == hMap) |
296 |
printErrorAndExit("Error at OpenFileMapping", GetLastError()); |
printErrorAndExit("Error at OpenFileMapping", GetLastError()); |
297 |
} |
} |
409 |
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410 |
if (VERBOSE) |
if (VERBOSE) |
411 |
verbose_option = "--verbose"; |
verbose_option = "--verbose"; |
412 |
_snprintf(szCmdline, 1023, "%s %s %i %i %s", argv[0], "--worker", worker_startrow, worker_rows, verbose_option); |
_snprintf(szCmdline, MAX_COMMAND_LINE - 1, "%s %s %i %i %s", argv[0], "--worker", worker_startrow, worker_rows, verbose_option); |
413 |
if (VERBOSE) |
if (VERBOSE) |
414 |
fprintf(stdout, "starting worker process: %s\n", szCmdline); |
fprintf(stdout, "starting worker process: %s\n", szCmdline); |
415 |
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416 |
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// prepare data structures for CreateProcess |
417 |
ZeroMemory( &si, sizeof(si) ); |
ZeroMemory( &si, sizeof(si) ); |
418 |
si.cb = sizeof(si); |
si.cb = sizeof(si); |
419 |
ZeroMemory( &pi, sizeof(pi) ); |
ZeroMemory( &pi, sizeof(pi) ); |
453 |
// perror("WaitForSingleObject"); |
// perror("WaitForSingleObject"); |
454 |
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455 |
// close all worker handles |
// close all worker handles |
456 |
for (worker_index = 0; worker_index < workers; worker_index++) |
for (worker_index = 0; worker_index < workers; worker_index++) { |
457 |
CloseHandle(worker_handles[worker_index]); |
if (!CloseHandle(worker_handles[worker_index])) |
458 |
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printErrorAndExit("Error at CloseHandle for worker handles", GetLastError()); |
459 |
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} |
460 |
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461 |
// write the result into the file |
// write the result into the file |
462 |
if (!FlushViewOfFile(pData, 0)) { |
if (!FlushViewOfFile(pData, 0)) |
463 |
err = GetLastError(); |
printErrorAndExit("Error at UnmapViewOfFile", GetLastError()); |
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printErrorAndExit("Error at UnmapViewOfFile", err); |
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} |
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464 |
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465 |
// remove the mapped file |
// remove the mapped file |
466 |
if (!UnmapViewOfFile(pData)) { |
if (!UnmapViewOfFile(pData)) |
467 |
err = GetLastError(); |
printErrorAndExit("Error at UnmapViewOfFile", GetLastError()); |
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printErrorAndExit("Error at UnmapViewOfFile", err); |
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exit(err); |
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} |
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468 |
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469 |
// cleanup handles |
// cleanup handles |
470 |
if (!CloseHandle(hMap) || !CloseHandle(hFile) ) { |
if (!CloseHandle(hMap) || !CloseHandle(hFile) ) |
471 |
err = GetLastError(); |
printErrorAndExit("Error at CloseHandle for memory mapped file", GetLastError()); |
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printErrorAndExit("Error at CloseHandle", err); |
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} |
|
472 |
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473 |
free(worker_args); |
free(worker_args); |
474 |
free(worker_handles); |
free(worker_handles); |