SYNOPSIS
- ssize_t eventfd_ctx_read(struct eventfd_ctx * ctx, int no_wait, __u64 * cnt);
ARGUMENTS
ctx
- [in] Pointer to eventfd context.
no_wait
- [in] Different from zero if the operation should not block.
cnt
- [out] Pointer to the 64-bit counter value.
DESCRIPTION
-EAGAIN : The operation would have blocked but no_wait was non-zero. -ERESTARTSYS : A signal interrupted the wait operation.
If no_wait is zero, the function might sleep until the eventfd internal counter becomes greater than zero.
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