56 lines
908 B
V
56 lines
908 B
V
import time
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struct AA {
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mut:
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b string
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}
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const (
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run_time = time.millisecond * 500 // must be big enough to ensure threads have started
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sleep_time = time.millisecond * 2000 // some tolerance added
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)
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fn test_return_lock() {
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start := time.now()
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shared s := AA{'3'}
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go printer(shared s, start)
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go fn (shared s AA, start time.Time) {
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for {
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reader(shared s)
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if time.now() - start > run_time {
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eprintln('> ${@FN} exited')
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exit(0)
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}
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}
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}(shared s, start)
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time.sleep(sleep_time)
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assert false
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}
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fn printer(shared s AA, start time.Time) {
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for {
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lock s {
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assert s.b in ['0', '1', '2', '3', '4', '5']
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}
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if time.now() - start > run_time {
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eprintln('> ${@FN} exited')
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exit(0)
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}
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}
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}
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fn reader(shared s AA) {
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mut i := 0
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for {
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i++
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x := i.str()
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lock s {
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s.b = x
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if s.b == '5' {
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// this test checks if cgen unlocks the mutex here
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break
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}
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}
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}
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}
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