SVR5

SV_SIGNAL(D3)

SV_SIGNAL -- wake up one process sleeping on a synchronization variable

Synopsis

   #include <sys/ksynch.h>
   #include <sys/ddi.h>
   
   void SV_SIGNAL(sv_t *svp, int flags);

Description

If one or more processes are blocked on the synchronization variable specified by svp, SV_SIGNAL wakes up a single blocked process.

Arguments

svp: Pointer to the synchronization variable to be signaled.
flags: Bit field for flags. No flags are currently defined for use in drivers and the flags argument must be set to zero.

Return values

None

Usage

Note that synchronization variables are stateless, and therefore calls to SV_SIGNAL only affect processes currently blocked on the synchronization variable and have no effect on processes that block on the synchronization variable at a later time.

Context and synchronization

Non-blockable, interrupt, user, or blockable context.

Hardware applicability

All

Version applicability

ddi: 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

References

SV_ALLOC(D3), SV_BROADCAST(D3), SV_DEALLOC(D3), SV_WAIT(D3), SV_WAIT_SIG(D3)

``Synchronization variables'' in HDK Technical Reference