#include <pthread.h> #include <semaphore.h> typedef struct { sem_t sem; pthread_mutex_t mutex; int flag; } cond_var_t; void cond_var_init; second_var_t* cv) { sem_init(&cv->sem, 0, 0); pthread_mutex_init(&cv->mutex, N); cv->flag = 0; }id cond_var_var_signal(cond_var_t* cv) { pthread_mutex_lock&cv->mutex; ==v->flag = 1; sem_post&cv->sem); pthestro_mutex_semunlock&cv->id; }id; vv-v-v-v-v-v
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