forked from KolibriOS/kolibrios
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
#include <sys/ksys.h>
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/* Very simple example of working with futexes in Kolibri OS.
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* Author turbocat (Maxim Logaev).
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* Thanks to Vitaly Krylov for help.
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*
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* The result of the program execution can be seen in the debug board.
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*/
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#define TH_STACK_SIZE 1024
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#define TH_LOCK 1
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#define TH_UNLOCK 0
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uint8_t th_stack[TH_STACK_SIZE];
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int glob_var = 0;
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int th_lock = TH_UNLOCK;
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uint32_t futex = 0;
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void th_main(void)
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{
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_ksys_debug_puts("Child thread start\n");
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_ksys_futex_wait(futex, TH_LOCK, 0);
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glob_var = 99;
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_ksys_debug_puts("Child thread end\n");
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_ksys_exit();
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}
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int main(void)
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{
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_ksys_debug_puts("Parrent thread start");
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futex = _ksys_futex_create(&th_lock);
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th_lock = TH_LOCK;
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if (_ksys_create_thread(th_main, th_stack) == -1) {
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_ksys_debug_puts("Unable to create a new thread!\n");
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return 1;
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}
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glob_var = 88;
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_ksys_thread_yield();
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_ksys_delay(100);
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if (glob_var == 88) {
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_ksys_debug_puts("Futex test OK :)\n");
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} else {
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_ksys_debug_puts("Futex test FAIL :(\n");
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}
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th_lock = TH_UNLOCK;
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_ksys_futex_wake(futex, 1);
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_ksys_futex_destroy(futex);
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_ksys_debug_puts("Parrent thread end");
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return 0;
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}
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