damage/HelloC
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

more loops, higher count, use flush

Browse Source
This commit is contained in:
damage 2024-08-27 20:14:04 +02:00
parent 240a5d5ebf
commit 4f2637ffc0
1 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fork.c
View File

@ -3,25 +3,36 @@
#include <sys/types.h> #include <sys/types.h>
#include <string.h> #include <string.h>
#include <errno.h> #include <errno.h>
#include <sys/wait.h>
#define LOOPS_PER_CHILD 2000
#define CHILDS 30
int main() { int main() {
for (int start = 0; start < 50; start += 10) { for (int start = 0; start < LOOPS_PER_CHILD * CHILDS; start += LOOPS_PER_CHILD) {
pid_t pid = fork(); pid_t pid = fork();
if (pid == -1) { if (pid == -1) {
fprintf(stderr, "Error forking: %s\n", strerror(errno)); fprintf(stderr, "Error forking: %s\n", strerror(errno));
return 1; return 1;
} else if (pid == 0) { } else if (pid == 0) {
// I AM FORK! // I AM FORK!
for (int i = start; i < start + 10; i++) { pid_t childPid = getpid();
printf("%d: %d\n", pid, i);
for (int i = start; i < start + LOOPS_PER_CHILD; i++) {
fprintf(stdout, "%d: %d\n", childPid, i);
fflush(stdout);
} }
printf("Fork %d finished counting from %d\n", getpid(), start); printf("Fork %d finished counting from %d\n", childPid, start);
return 0; return 0;
} else { } else {
printf("Fork %d successfull\n", pid); printf("Fork %d successfull\n", pid);
} }
} }
// wait for all childs to terminate
while (wait(NULL) > -1);
return 0;
fork(); fork();
fork(); fork();