58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
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#ifndef MESSAGE_QUEUE_H
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#define MESSAGE_QUEUE_H
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#include <stdint.h>
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#include <semaphore.h>
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#include <sys/time.h>
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typedef void* MessageQueue;
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typedef struct Message
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{
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int messageId;
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uintptr_t params[4];
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}Message;
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MessageQueue* MessageQueueCreate(int nMaxMessageNum, const char* pName = "unknown");
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void MessageQueueDestroy(MessageQueue* mq);
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int MessageQueuePostMessage(MessageQueue* mq, Message* m);
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int MessageQueueGetMessage(MessageQueue* mq, Message* m);
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int MessageQueueTryGetMessage(MessageQueue* mq, Message* m, int64_t timeout);
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int MessageQueueFlush(MessageQueue* mq);
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int MessageQueueGetCount(MessageQueue* mq);
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//* define a semaphore timedwait method for common use.
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static int SemTimedWait(sem_t* sem, int64_t time_ms)
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{
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int err;
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struct timeval tv;
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struct timespec ts;
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if(time_ms == -1)
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{
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err = sem_wait(sem);
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}
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else
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{
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gettimeofday(&tv, NULL);
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ts.tv_sec = tv.tv_sec;
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ts.tv_nsec = tv.tv_usec*1000 + time_ms*1000000;
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ts.tv_sec += ts.tv_nsec/(1000*1000*1000);
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ts.tv_nsec = ts.tv_nsec % (1000*1000*1000);
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err = sem_timedwait(sem, &ts);
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}
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return err;
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}
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#endif
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