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POprobleme with the trace of Fork()
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copied!<p>I have this example of fork() I need to do a trace!</p> <pre><code>#include <unistd.h> int main(void) { int i; for (i=0; i<3; i++) if (fork()) wait(NULL); return 0; } </code></pre> <p>My solution for to do the trace is, something is wrong, I don't know how to do the trace:</p> <pre><code>#include <stdio.h> #include <sys/types.h> #include <unistd.h> int main(void) { int i,pid; for(i=0;i<3;i++) { pid=fork(); if(pid>0) ///if is father (true) printf("PID After the fork child === %d & father === %d (i = %d) \n\n",(int)getpid,(int)getppid,i); wait(NULL); printf(" After the wait child=== %d & father=== %d (i = %d)|||\n",(int)getpid,(int)getppid,i); } } </code></pre> <p>This is what i get in the Terminal. I can see clearly that it is not correct, but i don't know how to resolve this problem:</p> <pre><code>PID After the fork child === 134513568 & father === 134513632 (i = 0) After the wait child=== 134513568 & father=== 134513632 (i = 0)||| PID After the fork child === 134513568 & father === 134513632 (i = 1) After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 1)||| PID After the fork child === 134513568 & father === 134513632 (i = 2) After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 0)||| PID After the fork child === 134513568 & father === 134513632 (i = 1) After the wait child=== 134513568 & father=== 134513632 (i = 1)||| PID After the fork child === 134513568 & father === 134513632 (i = 2) After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 1)||| PID After the fork child === 134513568 & father === 134513632 (i = 2) After the wait child=== 134513568 & father=== 134513632 (i = 2)||| After the wait child=== 134513568 & father=== 134513632 (i = 2)||| </code></pre> <p>Thanks.</p>

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