40 lines
667 B
C
40 lines
667 B
C
#include <ulib.h>
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#include <stdio.h>
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#include <string.h>
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#define DEPTH 4
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#define SLEEP_TIME 400
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void forktree(const char *cur);
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void
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forkchild(const char *cur, char branch) {
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char nxt[DEPTH + 1];
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if (strlen(cur) >= DEPTH)
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return;
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snprintf(nxt, DEPTH + 1, "%s%c", cur, branch);
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if (fork() == 0) {
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forktree(nxt);
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yield();
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exit(0);
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}
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}
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void
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forktree(const char *cur) {
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cprintf("%04x: I am '%s'\n", getpid(), cur);
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forkchild(cur, '0');
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forkchild(cur, '1');
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}
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int
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main(void) {
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cprintf("forktree process will sleep %d ticks\n",SLEEP_TIME);
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sleep(SLEEP_TIME);
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forktree("");
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return 0;
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}
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