wakeup(D3) wakeup(D3) NAME wakeup - resume suspended process execution SYNOPSIS #include <sys/types.h> #include <sys/ddi.h> void wakeup(caddr_t event); Arguments event Address that was passed to the corresponding call to sleep(D3) which caused the process to be suspended. DESCRIPTION wakeup awakens all processes sleeping on the address specified by event and makes them eligible for scheduling. Return Values None USAGE The same event argument must be used for corresponding calls to sleep and wakeup. It is recommended for code readability and for efficiency to have a one-to-one correspondence between events and sleep addresses. Whenever a driver returns from a call to sleep, it should test to ensure that the event for which the driver slept actually occurred. There is an interval between the time the process that called sleep is awakened and the time it resumes execution where the state forcing the sleep may have been reentered. This can occur because all processes waiting for an event are awakened at the same time. The first process selected for execution by the scheduler usually gains control of the event. All other processes awakened should recognize that they cannot continue and should reissue the sleep call. Level Base or Interrupt. Synchronization Constraints Does not sleep. REFERENCES sleep(D3) Page 1[top]
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