*/
void Enter();
+ /**
+ Try to enter the critical section (same as trying to lock a mutex).
+ If it can't, immediately returns false.
+
+ @since 2.9.3
+ */
+ bool TryEnter();
+
/**
Leave the critical section allowing other threads use the global data
protected by it. There is no error return for this function.
wxTHREAD_MISC_ERROR
};
-/**
- Defines the interval of priority
-*/
-enum
-{
- WXTHREAD_MIN_PRIORITY = 0u,
- WXTHREAD_DEFAULT_PRIORITY = 50u,
- WXTHREAD_MAX_PRIORITY = 100u
-};
-
-
/**
@class wxThread
modeled after the POSIX thread API. This is different from the Win32 API
where all threads are joinable.
- By default wxThreads in wxWidgets use the @b detached behavior.
+ By default wxThreads in wxWidgets use the @b detached behaviour.
Detached threads delete themselves once they have completed, either by themselves
when they complete processing or through a call to Delete(), and thus
@b must be created on the heap (through the new operator, for example).
A common problem users experience with wxThread is that in their main thread
they will check the thread every now and then to see if it has ended through
IsRunning(), only to find that their application has run into problems
- because the thread is using the default behavior (i.e. it's @b detached) and
+ because the thread is using the default behaviour (i.e. it's @b detached) and
has already deleted itself.
Naturally, they instead attempt to use joinable threads in place of the previous
- behavior. However, polling a wxThread for when it has ended is in general a
+ behaviour. However, polling a wxThread for when it has ended is in general a
bad idea - in fact calling a routine on any running wxThread should be avoided
if possible. Instead, find a way to notify yourself when the thread has ended.
/**
Gets the thread identifier: this is a platform dependent number that uniquely
identifies the thread throughout the system during its existence
- (i.e. the thread identifiers may be reused).
+ (i.e.\ the thread identifiers may be reused).
*/
wxThreadIdType GetId() const;
static wxThreadIdType GetMainId();
/**
- Gets the priority of the thread, between zero and 100.
+ Gets the priority of the thread, between 0 (lowest) and 100 (highest).
- The following priorities are defined:
- - @b WXTHREAD_MIN_PRIORITY: 0
- - @b WXTHREAD_DEFAULT_PRIORITY: 50
- - @b WXTHREAD_MAX_PRIORITY: 100
+ @see SetPriority()
*/
unsigned int GetPriority() const;
/**
- Returns @true if the thread is alive (i.e. started and not terminating).
+ Returns @true if the thread is alive (i.e.\ started and not terminating).
Note that this function can only safely be used with joinable threads, not
detached ones as the latter delete themselves and so when the real thread is
static bool SetConcurrency(size_t level);
/**
- Sets the priority of the thread, between 0 and 100.
+ Sets the priority of the thread, between 0 (lowest) and 100 (highest).
+
It can only be set after calling Create() but before calling Run().
- The following priorities are defined:
- - @b WXTHREAD_MIN_PRIORITY: 0
- - @b WXTHREAD_DEFAULT_PRIORITY: 50
- - @b WXTHREAD_MAX_PRIORITY: 100
+ The following symbolic constants can be used in addition to raw
+ values in 0..100 range:
+ - ::wxPRIORITY_MIN: 0
+ - ::wxPRIORITY_DEFAULT: 50
+ - ::wxPRIORITY_MAX: 100
*/
void SetPriority(unsigned int priority);