A runlist is used to restrict concurrent exection to a limited set of concurrent sessions, much like a semaphore.
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#include <misc.h>
Inheritance diagram for Runlist:
Collaboration diagram for Runlist:
Public Member Functions
Create a new runlist with a specified limit.
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Add a runable object to this runlist.
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Remove a runable object from the wait list or notify when it is done running so that the used count can be decremented.
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Enable setting of mutex name for deadlock debug.
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Entering a
Mutex locks the mutex for the current thread.
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Future abi will use enter/leave/test members.
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Future abi will use enter/leave/test members.
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Future abi will use enter/leave/test members.
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Tries to lock the mutex for the current thread.
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Leaving a mutex frees that mutex for use by another thread.
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Static Public Member Functions
Enable or disable deadlock debugging.
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Protected Member Functions
Protected Attributes
Private Attributes
Detailed Description
A runlist is used to restrict concurrent exection to a limited set of concurrent sessions, much like a semaphore.
However, the runlist differs in that it notifies objects when they become ready to run, rather than requiring them to wait and "block" for the semaphore count to become low enough to continue.
- Author
- David Sugar dyfet.nosp@m.@ost.nosp@m.el.co.nosp@m.m list of runable objects.
Definition at line 708 of file misc.h.
Constructor & Destructor Documentation
Runlist::Runlist
(
unsigned
count = 1 )
Create a new runlist with a specified limit.
- Parameters
-
count limit before wait queuing.
Member Function Documentation
bool Runlist::add
(
Runable *
run )
Add a runable object to this runlist.
If the number of entries running is below the limit, then add returns true otherwise the entry is added to the list.
- Returns
- true if immediately ready to run
- Parameters
-
run pointer to runable object.
void Runlist::check
(
void
)
protected
void Runlist::del
(
Runable *
run )
Remove a runable object from the wait list or notify when it is done running so that the used count can be decremented.
- Parameters
-
run pointer to runable object.
void Mutex::enter
(
void
)
inlineinherited
Future abi will use enter/leave/test members.
Definition at line 263 of file thread.h.
void Mutex::enterMutex
(
void
)
inherited
Entering a Mutex locks the mutex for the current thread.
This also can be done using the ENTER_CRITICAL macro or by using the ++ operator on a mutex.
- See Also
- leaveMutex
void Mutex::leave
(
void
)
inlineinherited
Future abi will use enter/leave/test members.
Definition at line 269 of file thread.h.
void Mutex::leaveMutex
(
void
)
inherited
Leaving a mutex frees that mutex for use by another thread.
If the mutex has been entered (invoked) multiple times (recursivily) by the same thread, then it will need to be exited the same number of instances before it is free for re-use. This operation can also be done using the LEAVE_CRITICAL macro or by the – operator on a mutex.
- See Also
- enterMutex
void Mutex::nameMutex
(
const char *
name )
inlineinherited
Enable setting of mutex name for deadlock debug.
- Parameters
-
name for mutex.
Definition at line 248 of file thread.h.
void Runlist::set
(
unsigned
limit )
Set the limit.
- Parameters
-
limit to use.
static void Mutex::setDebug
(
bool
mode )
inlinestaticinherited
Enable or disable deadlock debugging.
- Parameters
-
mode debug mode.
Definition at line 240 of file thread.h.
bool Mutex::test
(
void
)
inlineinherited
Future abi will use enter/leave/test members.
- Returns
- true if entered.
Definition at line 277 of file thread.h.
bool Mutex::tryEnterMutex
(
void
)
inherited
Tries to lock the mutex for the current thread.
Behaves like enterMutex , except that it doesn't block the calling thread if the mutex is already locked by another thread.
- Returns
- true if locking the mutex was succesful otherwise false
- See Also
- enterMutex
-
leaveMutex
Field Documentation
unsigned Runlist::limit
protected
unsigned Runlist::used
protected
The documentation for this class was generated from the following file: