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| Code Block |
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int account_balance;
mutex_t account_lock;
void debit(int amount)
{
mutex_lock(&account_lock);
account_balance \-= amount;
mutex_unlock(&account_lock);
}
void credit(int amount)
{
mutex_lock(&account_lock);
account_balance \+= amount;
mutex_unlock(&account_lock);
}
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