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-rw-r--r--shell/beispiele/fork_signal/fork.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/shell/beispiele/fork_signal/fork.c b/shell/beispiele/fork_signal/fork.c
new file mode 100644
index 0000000..b144577
--- /dev/null
+++ b/shell/beispiele/fork_signal/fork.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, const char* argv[]) {
+ pid_t pid;
+ int h;
+ int count;
+
+ if (argc < 2) {
+ printf("Usage: ./fork process#\n");
+ return 0;
+ }
+
+ count = atoi(argv[1]) - 1;
+ printf("Process#: %d\n", count + 1);
+ printf("Parent started\n");
+
+ pid = 1;
+ for (h = 0; h < count; ++h) {
+ if ((pid = fork()) < 0)
+ printf("fork error\n");
+ else if (pid == 0) {
+ printf("Child %d started\n", h);
+ sleep(1);
+ printf("Child %d finished\n", h);
+ exit(0);
+ }
+ }
+
+ printf("Parent waiting\n");
+ for (h = 0; h < count; ++h) {
+ wait(NULL);
+ }
+ printf("Parent finished\n");
+ return EXIT_SUCCESS;
+}