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32 lines
614 B
C
32 lines
614 B
C
// Test preemption by forking off a child process that just spins forever.
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// Let it run for a couple time slices, then kill it.
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#include <inc/lib.h>
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void
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umain(int argc, char **argv)
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{
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envid_t env;
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cprintf("I am the parent. Forking the child...\n");
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if ((env = fork()) == 0) {
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cprintf("I am the child. Spinning...\n");
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while (1)
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/* do nothing */;
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}
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cprintf("I am the parent. Running the child...\n");
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sys_yield();
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sys_yield();
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sys_yield();
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sys_yield();
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sys_yield();
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sys_yield();
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sys_yield();
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sys_yield();
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cprintf("I am the parent. Killing the child...\n");
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sys_env_destroy(env);
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}
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