roc::core::Semaphore Class Reference

Semaphore. More...

#include <semaphore.h>

Inheritance diagram for roc::core::Semaphore:

Collaboration diagram for roc::core::Semaphore:

Public Member Functions
	Semaphore (unsigned counter=0)
	Initialize semaphore with given counter. More...
ROC_ATTR_NODISCARD bool	timed_wait (nanoseconds_t deadline)
	Wait until the counter becomes non-zero, decrement it, and return true. If deadline expires before the counter becomes non-zero, returns false. Deadline should be in the same time domain as core::timestamp(). More...
void	wait ()
	Wait until the counter becomes non-zero, decrement it, and return. More...
void	post ()
	Increment counter and wake up blocked waits. This method is lock-free. More...
	Semaphore (unsigned counter=0)
	Initialize semaphore with given counter. More...
ROC_ATTR_NODISCARD bool	timed_wait (nanoseconds_t deadline)
	Wait until the counter becomes non-zero, decrement it, and return true. If deadline expires before the counter becomes non-zero, returns false. Deadline should be in the same time domain as core::timestamp(). More...
void	wait ()
	Wait until the counter becomes non-zero, decrement it, and return. More...
void	post ()
	Increment counter and wake up blocked waits. This method is lock-free at least on recent glibc and musl versions (which implement POSIX semaphores using a futex and an atomic). More...

Detailed Description

Semaphore.

Definition at line 25 of file semaphore.h.

Constructor & Destructor Documentation

Semaphore() [1/2]

roc::core::Semaphore::Semaphore ( unsigned  counter = 0 )

explicit

Initialize semaphore with given counter.

Semaphore() [2/2]

roc::core::Semaphore::Semaphore ( unsigned  counter = 0 )

explicit

Initialize semaphore with given counter.

Member Function Documentation

post() [1/2]

void roc::core::Semaphore::post

(

)

Increment counter and wake up blocked waits. This method is lock-free.

post() [2/2]

void roc::core::Semaphore::post

(

)

Increment counter and wake up blocked waits. This method is lock-free at least on recent glibc and musl versions (which implement POSIX semaphores using a futex and an atomic).

timed_wait() [1/2]

ROC_ATTR_NODISCARD bool roc::core::Semaphore::timed_wait

(

nanoseconds_t

deadline

)

Wait until the counter becomes non-zero, decrement it, and return true. If deadline expires before the counter becomes non-zero, returns false. Deadline should be in the same time domain as core::timestamp().

timed_wait() [2/2]

ROC_ATTR_NODISCARD bool roc::core::Semaphore::timed_wait

(

nanoseconds_t

deadline

)

Wait until the counter becomes non-zero, decrement it, and return true. If deadline expires before the counter becomes non-zero, returns false. Deadline should be in the same time domain as core::timestamp().

wait() [1/2]

void roc::core::Semaphore::wait

(

)

Wait until the counter becomes non-zero, decrement it, and return.

wait() [2/2]

void roc::core::Semaphore::wait

(

)

Wait until the counter becomes non-zero, decrement it, and return.

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The documentation for this class was generated from the following file:

• roc_core/target_darwin/roc_core/semaphore.h