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Added new semaphore flag B_KILL_CAN_INTERRUPT. It makes acquire_sem_etc()

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interruptable by SIGKILL[THR], even if B_CAN_INTERRUPT is not set. Not
sure, if this is the best solution, but it works.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11484 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2005-02-25 14:10:41 +00:00
parent 448e975c5b
commit 17e41f5251
1 changed files with 13 additions and 5 deletions
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18
headers/os/kernel/OS.h
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@ -147,13 +147,21 @@ typedef struct sem_info {
/* semaphore flags */
enum {
B_CAN_INTERRUPT = 1, /* acquisition of the semaphore can be interrupted (system use only) */
B_CHECK_PERMISSION = 4, /* ownership will be checked (system use only) */
B_CAN_INTERRUPT = 0x01, // acquisition of the semaphore can be
// interrupted (system use only)
B_CHECK_PERMISSION = 0x04, // ownership will be checked (system use
// only)
B_KILL_CAN_INTERRUPT = 0x20, // acquisition of the semaphore can be
// interrupted by SIGKILL[THR], even
// if not B_CAN_INTERRUPT (system use
// only)
/* release_sem_etc() only flags */
B_DO_NOT_RESCHEDULE = 2, /* thread is not rescheduled */
B_RELEASE_ALL = 8, /* all waiting threads will be woken up, count will be zeroed */
B_RELEASE_IF_WAITING_ONLY = 16, /* release count only if there are any threads waiting */
B_DO_NOT_RESCHEDULE = 0x02, // thread is not rescheduled
B_RELEASE_ALL = 0x08, // all waiting threads will be woken up,
// count will be zeroed
B_RELEASE_IF_WAITING_ONLY = 0x10, // release count only if there are any
// threads waiting
};
extern sem_id create_sem(int32 count, const char *name);