46 lines
926 B
C
46 lines
926 B
C
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// Semaphore implementation
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#ifndef BASE_SYNCHRONIZATION_SEMAPHORE_H_
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#define BASE_SYNCHRONIZATION_SEMAPHORE_H_
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#include "base/base_export.h"
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#include "base/base_types.h"
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#if defined(OS_WIN)
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#include <windows.h>
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#else
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#include <sys/semaphore.h>
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#endif
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namespace nbase
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{
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class BASE_EXPORT Semaphore
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{
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public:
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#if defined(OS_WIN)
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typedef HANDLE OSSemaphoreType;
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#elif defined(OS_POSIX)
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typedef sem_t *OSSemaphoreType;
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#endif
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Semaphore();
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~Semaphore();
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public:
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bool CreateSemaphore(const char *sem_name, uint32_t init_value, uint32_t max_value);
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/* wait the semaphore until some post one*/
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bool WaitSemaphore();
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/* wait the semaphore until some post one or timeout */
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bool WaitSemaphore(uint32_t timeout_ms);
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/* post some semaphore*/
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bool PostSemaphore(uint32_t post_num);
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private:
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uint32_t init_value_;
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OSSemaphoreType semaphore_;
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};
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} // namespace nbase
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#endif // BASE_SYNCHRONIZATION_SEMAPHORE_H_
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