Suspends the current thread until a specified time interval has expired.

The resolution of the timer depends on the hardware, but is normally 1 Symbian OS tick (approximately 1/64 second).

Suspends the current thread until a specified time interval has expired to a resolution of 1ms .

Allocates a cell of specified size from the current thread's heap.

If there is insufficient memory available on the heap from which to allocate a cell of the required size, the function returns NULL.

The resulting size of the allocated cell may be rounded up to a value greater than aSize, but is guaranteed to be not less than aSize.

Allocates a cell of specified size from the current thread's heap, and leaves if there is insufficient memory in the heap.

The resulting size of the allocated cell may be rounded up to a value greater than aSize, but is guaranteed to be not less than aSize.

Allocates a cell of specified size from the current thread's default heap, and, if successful, places a pointer to the cell onto the cleanup stack.

The function leaves if there is insufficient memory in the heap.

The resulting size of the allocated cell may be rounded up to a value greater than aSize, but is guaranteed to be not less than aSize.

Gets the length of the specified allocated heap cell.

The cell is assumed to be in the current thread's heap.

Gets the total number of cells allocated on the current thread's default heap, and the total space allocated to them.

Allocates a cell of specified size from the current thread's default heap, and clears it to binary zeroes.

If there is insufficient memory available on the heap from which to allocate a cell of the required size, the function returns NULL.

The resulting size of the allocated cell may be rounded up to a value greater than aSize, but is guaranteed to be not less than aSize.

Allocates a cell of specified size from the current thread's default heap, clears it to binary zeroes, and leaves if there is insufficient memory in the heap.

The resulting size of the allocated cell may be rounded up to a value greater than aSize, but is guaranteed to be not less than aSize.

Gets the current thread's default current heap.

Suspends the current thread until the specified absolute time, in the current time zone.

If the machine is off at that time, the machine will be turned on again.

KErrNone - suspension of the current thread completed normally at the requested time.

KErrAbort - suspension of the current thread was aborted because the system time changed.

KErrUnderflow - the requested completion time is in the past.

KErrOverFlow - the requested completion time is too far in the future.

Gets the total free space currently available on the current thread's default heap, and the space available in the largest free block.

The space available represents the total space which can be allocated.

Note that compressing the heap may reduce the total free space available and the space available in the largest free block.

Makes a beep tone with a specified frequency and duration.

This function should not be used. It exists to maintain compatibility with older versions of Symban OS.

Performs a binary search for an array element containing a specified key.

It can be used on any kind of array where elements can be identified by key. It is used by the standard Symbian OS arrays having CArrayFix, CArrayVar or CArrayPak in their class hierarchy in the implementation of the various functions for inserting, deleting and finding elements by key. The function can be used by other arrays.

The function returns a zero value if the search is successful and a non-zero value otherwise.

If the search is successful, the function puts the position (i.e. the index) of the element into aPos. If the search is unsuccessful, then the function puts into aPos the position of the first element in the array whose key is greater than the search key.

If the array is empty, i.e. aCount is zero, then the search is unsuccessful and aPos is not defined.

Cancel a miscellaneous notification requested by this thread

Cancels a currently outstanding notification for system idle or object deletion.

Checks the validity of the current thread's default heap.

The function walks through the list of allocated cells and the list of free cells checking that the heap is consistent and complete.

Converts the character to its collated form.

Collating is the process of removing differences between characters that are deemed unimportant for the purposes of ordering characters. The result of the conversion depends on the locale and on whether this is a UNICODE build or not.

Note that for a non UNICODE build, if the binary value of the character aChar is greater than or equal to 0x100, then the character returned is the same as the character passed to the function.

Gets a copy of the data which is passed as an argument to the thread function of the current process's main thread when it is first scheduled to run.

User::CommandLineLength()

Gets the length of the data which is passed as an argument to the thread function of the current process's main thread when it is first scheduled to run.

Compresses all the chunks containing heaps.

This function is no longer supported, and calling it has no effect.

Gets the total number of cells allocated on the current thread's default heap.

Gets the the total number of cells allocated, and the number of free cells, on the current thread's default heap.

Check if the process that created the current process has a given capability

When a check fails the action taken is determined by the system wide Platform Security configuration. If PlatSecDiagnostics is ON, then a diagnostic message is emitted. If PlatSecEnforcement is OFF, then this function will return ETrue even though the check failed.

Check if the process that created the current process has both of the given capabilities

When a check fails the action taken is determined by the system wide Platform Security configuration. If PlatSecDiagnostics is ON, then a diagnostic message is emitted. If PlatSecEnforcement is OFF, then this function will return ETrue even though the check failed.

Return the Secure ID of the process that created the current process.

Return the Vendor ID of the process that created the current process.

Gets the critical state associated with the current thread.

User::SetCritical()

Gets the critical state associated with the specified thread.

User::SetCritical()

Gets a pointer to the exception handler for the current thread.

Terminates the current thread, specifying a reason. All child threads are terminated and all resources are cleaned up.

If the current thread is the main thread in a process, the process is also terminated.

Gets the fast counter.

This is the current value of the machine's high resolution timer. If a high resolution timer is not available, it uses the millisecond timer instead.

The freqency of this counter can be determined by reading the HAL attribute EFastCounterFrequency.

This function is intended for use in profiling and testing; it should not be used in production code. User::NTickCount() should be used instead.

This is because the implementation of the FastCounter is platform-specific: its frequency can be anywhere from a few KHz to many MHz. It may also not be activated when needed, since it is expensive in terms of clock cycles and battery life, and use of a platform-specific API may be necessary to enable it.

User::NTickCount()

Folds the specified character.

Folding converts the character to a form which can be used in tolerant comparisons without control over the operations performed. Tolerant comparisons are those which ignore character differences like case and accents.

The result of folding a character depends on the locale and on whether this is a UNICODE build or not.

Note that for a non-UNICODE build, if the binary value of the character aChar is greater than or equal to 0x100, then the character returned is the same as the character passed to the function.

TChar::Fold()

Folds the character according to a specified folding method.

TChar::EFoldCase, convert characters to their lower case form, if any;

TChar::EFoldAccents, strip accents;

TChar::EFoldDigits, convert digits representing values 0..9 to characters '0'..'9';

TChar::EFoldSpaces, convert all spaces (ordinary, fixed-width, ideographic, etc.) to ' ';

TChar::EFoldKana, convert hiragana to katakana;

TChar::EFoldWidth, fold full width and half width variants to their standard forms;

TChar::EFoldAll, use all of the above folding methods.

TChar::Fold()

Frees the specified cell and returns it to the current thread's default heap.

Frees the logical device driver DLL associated with a specified driver name.

Frees the physical device driver DLL associated with a specified driver name.

Frees the specified cell, returns it to the current thread's default heap, and resets the pointer to NULL.

Gets the specified environment data item belonging to the current process; this is assumed to be an 8-bit descriptor.

Environment data may be stored in the process and is passed to a child process on creation of that child process.

On successful return from this function, the data item is deleted from the process.

Gets the specified environment data item belonging to the current process; this is assumed to be an 16-bit descriptor.

Environment data may be stored in the process and is passed to a child process on creation of that child process.

On successful return from this function, the data item is deleted from the process.

Gets the specified environment data item belonging to the current process; this is assumed to be a 32 bit value.

Environment data may be stored in the process and is passed to a child process on creation of that child process.

On successful return from this function, the data item is deleted from the process.

Enables the current thread to handle an exception.

The function is called by the kernel.

TExcType

Gets a reference to the handle to the current thread's heap.

Does the necessary preparations to guarantee correct execution of code in the specified virtual address range.

The function assumes that this code has been loaded or modified by user code. Calling this function against uncommitted memory region is considered as S/W bug and may generate exception on some memory models.

The specified addresses are associated with a user writable code chunk as created by RChunk::CreateLocalCode().

The function cleans the data cache to ensure that written data has been committed to main memory and then flushes the instruction cache and branch target buffer (BTB) to ensure that the code is loaded from main memory when it is executed. The Kernel uses the size of the range specified to decide whether to clean/flush line-by-line or to simply clean/flush the entire cache.

RChunk::CreateLocalCode() UserHeap::ChunkHeap()

Gets the time since the last user activity.

Invokes the notifier server to display a text message on the screen for a short time.

RNotifier

Panics the current thread with a USER 0 panic.

Typically, this is called when a test for a class invariant fails, i.e. when a test which checks that the internal data of an object is self-consistent, fails.

Such tests are almost always done in debug builds, commonly using the __ASSERT_DEBUG macro.

Tests whether the specified exception type can be handled by the current thread.

Tests whether the specified address is in the ROM.

Tests whether just-in-time debugging is on or off.

The function is used by the Kernel, on the Emulator, to decide whether to do just-in-time debugging for panics. The function applies to the current process.

Unless overridden by calling User::SetJustInTime(EFalse), just-in-time debugging is on by default.

RProcess::JustInTime

Gets the language of the current locale.

Leaves the currently executing function, unwinds the call stack, and returns from the most recently entered trap harness.

TRAP TRAPD

Leaves or returns with a specified reason code.

If the reason code is negative the function leaves, and the reason code is returned through the trap harness.

If the reason code is zero or positive, the function simply returns with the reason value.

Leaves with the reason code KErrNoMemory, if the specified pointer is NULL.

If the pointer is not NULL, the function simply returns with the value of the pointer.

Leaves with the reason code KErrNoMemory, if the specified pointer is NULL.

If the pointer is not NULL, the function simply returns with the value of the pointer.

Used to check pointers to const objects.

Leaves with the specific reason code KErrNoMemory.

KErrNoMemory

Loads the logical device driver (LDD) DLL with the specified filename.

The function searches the system path for the LDD DLL, and loads it. It then makes a kernel server call that:

1. creates the LDD factory object, an instance of a DLogicalDevice derived class; this involves checking the first UID value to make sure that the DLL is a valid LDD before proceeding to call the exported function at ordinal 1, which creates the LDD factory object on the kernel heap

2. calls the LDD factory object's Install() function to complete the installation

3. adds the new LDD factory object to the kernel's list of LDD factory objects.

Loads the physical device driver (PDD) DLL with the specified filename.

The function searches the system path for the PDD DLL, and loads it. It then makes a kernel server call that:

1. creates the PDD factory object, an instance of a DPhysicalDevice derived class; this involves checking the first UID value to make sure that the DLL is a valid PDD before proceeding to call the exported function at ordinal 1, which creates the PDD factory object on the kernel heap

2. calls the PDD factory object's Install() function to complete the installation

2. adds the new PDD factory object to the kernel's list of PDD factory objects.

Returns which of the periods the clock is currently in.

Atomically (i.e. in a manner which is safe against concurrent access by other threads) decrements a TInt value by 1.

As an example of its use, the function is used in the implementation of critical sections.

User::LockedInc RCrticalSection

Atomically (i.e. in a manner which is safe against concurrent access by other threads) increments a TInt value by 1.

As an example of its use, the function is used in the implementation of critical sections.

User::LockedDec RCrticalSection

Converts the specified character to lower case.

The result of the conversion depends on the locale and on whether this is a UNICODE build or not.

Note that for a non-UNICODE build, if the binary value of the character aChar is greater than or equal to 0x100, then the character returned is the same as the character passed to the function.

Gets the machine configuration.

If there's a TTrapHandler installed marks the cleanup stack and returns the TTrapHandler for subsequent use in UnMarkCleanupStack.

Only intended for use in the defintion of TRAP and TRAPD and only when User::Leave is defined in terms of THROW.

TRAP TRAPD

Changes the set of exceptions which the current thread's exception handler can deal with.

aClearMask is the set of flags defining the set of exceptions which the exception handler no longer deals with, while aSetMask is the set of flags defining the new set of exceptions to be set.

Flag clearing is done before flag setting.

Gets the nanokernel tick count.

This is the current value of the machine's millisecond tick counter.

epoc.exe -Dtimerresolution=3

On most hardware the resolution is about 1 millisecond.

You can get the nanokernel tick period in microseconds by calling into the Hardware Abstraction Layer:

TInt nanokernel_tick_period;
HAL::Get(HAL::ENanoTickPeriod, nanokernel_tick_period);

Queue a notifier to detect system idle

Panics the current thread, specifying a category name and panic number.

Keep the length of the category name small; it is limited to 16 characters.

Gets the length of the specified item of environment data belonging to the current process.

Environment data may be stored in the process and is passed to a child process on creation of that child process.

Tests whether the current process allows other processes to switch its priority between 'foreground' and 'background'.

Gets the critical state associated with the current process.

User::SetProcessCritical()

Gets the critical state associated with the specified process.

User::SetProcessCritical()

Compares two version objects and returns true if the test version is less than the current version.

Version information is encapsulated by a TVersion type object and consists of a major version number, a minor version number and a build number.

The function returns true if one of the following conditions is true:

1. the test major version is strictly less than the current major version

2. the test major version is equal to the current major version and the test minor version is less than or equal to the current minor version

If neither condition is true, the function returns false.

Quick sorts array elements.

It is used by the standard Symbian OS arrays having CArrayFixBase, CArrayVarBase or CArrayPakBase in their class hierarchy in the implementation of their sort functions. The function can be used by other arrays.

The function returns KErrNone if the operation is successful otherwise it returns KErrGeneral.

Raises an exception of a specified type on the current thread.

If the thread has an exception handler to handle this type of exception, then it is called.

If the thread has no exception handler to handle this type of exception, then the function raises a USER-EXEC 3 panic.

Note that exception handlers are executed in the context of the thread on which the exception is raised; control returns to the point of the exception.

Increases or decreases the size of an existing cell in the current thread's heap.

If the cell is being decreased in size, then it is guaranteed not to move, and the function returns the pointer originally passed in aCell. Note that the length of the cell will be the same if the difference between the old size and the new size is smaller than the minimum cell size.

Note that in debug mode, the function returns NULL if the cell cannot be grown in place, regardless of whether the ENeverMove bit is set.

If the reallocated cell is at a different location from the original cell, then the content of the original cell is copied to the reallocated cell.

If the supplied pointer, aCell is NULL, then the function attempts to allocate a new cell, but only if the cell can be moved, i.e. aMode does not have the ENeverMove bit set.

Increases or decreases the size of an existing cell, and leaves if there is insufficient memory in the current thread's default heap.

If the cell is being decreased in size, then it is guaranteed not to move, and the function returns the pointer originally passed in aCell. Note that the length of the cell will be the same if the difference between the old size and the new size is smaller than the minimum cell size.

Note that in debug mode, the function leaves if the cell cannot be grown in place, regardless of whether the ENeverMove bit is set.

If the reallocated cell is at a different location from the original cell, then the content of the original cell is copied to the reallocated cell.

If the supplied pointer, aCell is NULL, then the function attempts to allocate a new cell, but only if the cell can be moved, i.e. aMode does not have the ENeverMove bit set.

Assigns a new name to the current process, replacing any existing name.

When a process is created, its default name is the name portion of the filename from which the executable is loaded.

The new name must be a valid name and it must also be such that the process's new fullname remains unique amongst processes.

Assigns a new name to the current thread, replacing any existing name that may have been set.

The new name must be a valid name and it must also be such that the thread's new fullname remains unique amongst threads. The length of the new name must be less than or equal to 80 (maximum length of kernel objects) otherwise a panic is raised.

Signals the current thread that the asynchronous request associated with the specified request status object is complete.

This function is used to complete an asynchronous request originating in the same thread as the code that is currently executing. If a request originates in another thread, then executing code must use RThread::RequestComplete() to signal the completion of that request.

The request is completed with the completion code passed in aReason. This value is copied into the request status, pointed to by aStatus, before signalling the current thread's request semaphore.

The meaning of the completion code passed in aReason is a matter of convention to be decided between the service requester and the service provider.

RThread::RequestComplete

Resets all user inactivity timers.

Atomically decrements the specified value by 1, if the value is > 0.

Atomically increments the specified value by 1, if the value is > 0.

Sets up or changes the effect that termination of the current thread has, either on its owning process, or on the whole system.

Sets the system wide currency symbol.

On successful return from this function, a call to the Set() member function of a TCurrencySymbol object fetches the new currency symbol.

Sets the debug mask.

Sets the debug mask at the given index

Sets a new exception handler for the current thread. Note that the handler is not guaranteed to receive floating point exceptions (KExceptionFpe) when a hardware floating point implementation is in use - see User::SetFloatingPointMode for hardware floating point modes and whether they cause user-trappable exceptions.

KExceptionAbort KExceptionKill KExceptionUserInterrupt KExceptionFpe KExceptionFault KExceptionInteger KExceptionDebug

Sets the hardware floating point mode for the current thread. This does not affect software floating point calculations. The rounding mode can also be set. New threads created by this thread will inherit the mode, thus to set the mode for a whole process, call this method before you create any new threads.

TFloatingPointMode TFloatingPointRoundingMode

Sets the home time to a specified time value.

Set the time using User::SetUTCTime if the UTC time is known; otherwise, use the timezone server to set the time.

Sets the secure home time to a specified time value.

Sets just-in-time debugging for this process on or off.

While the function can be called by code running on both the Emulator and ARM, it only has an effect on the Emulator. Turning just-in-time debugging off prevents the debug Emulator closing down when a panic occurs.

By default, just-in-time debugging is on.

Note that the emulator handles panics in the nomal manner, i.e. by killing the thread.

RProcess::SetJustInTime

Sets the machine configuration.

Allows the current process to choose to have its priority switched by another process between 'foreground' and 'background'.

By default a process does not allow this.

Sets up or changes the effect that termination of subsequently created threads will have, either on the owning process, or on the whole system.

It is important to note that we are not referring to threads that have already been created, but threads that will be created subsequent to a call to this function.

Set the current threads realtime state. TRealtimeState

Sets the current thread's trap handler and returns a pointer to any pre-existing trap handler.

Pass a NULL pointer to this function to clear the trap handler.

The trap handler works with the TRAP mechanism to handle the effects of a leave.

Note that TTrapHandler is an abstract base class; a trap handler must be implemented as a derived class.

TRAP TRAPD

Sets the UTC offset to the given number of seconds. This should include both time zone differences and the effect of any applicable daylight savings time. A positive offset indicates a time ahead of UTC, a negative offset indicates a time behind UTC.

Sets the UTC time to a specified time value.

Sets the UTC time and UTC offset to the specified values, atomically. This is equivalent to calling both SetUTCTime and SetUTCOffset, but without the possibility of an incorrect time being observed between the two calls. If the operation is not successful, an error code will be returned and both the time and offset will be left unchanged.

Sets the secure UTC time to a specified time value.

Gets the length of a C style, null terminated, string of single-byte valued characters.

The length does not include the null terminator.

Gets the length of a C style, null terminated, string of double-byte valued characters.

The length does not include the null terminator.

Changes the current thread's heap.

Changes the current thread's heap.

Gets the current tick count.

The period between ticks is usually 1/64 second, but may be hardware dependent.

Converts a specified character to its title case version.

Gets a pointer to the current thread's trap handler.

Note that TTrapHandler is an abstract base class; a trap handler must be implemented as a derived class.

Gets the UTC offset - the difference between UTC and the current local time due to any time zones and daylight savings time that may be in effect. A positive offset indicates a time ahead of UTC, a negative offset indicates a time behind UTC.

If passed a non-null TTrapHandler unmarks the cleanup stack.

Only intended for use in the defintion of TRAP and TRAPD and only when User::Leave is defined in terms of THROW.

TRAP TRAPD

Converts a specified character to upper case.

The result of the conversion depends on the locale and on whether this is a UNICODE build or not.

Note that for a non UNICODE build, if the binary value of the character aChar is greater than or equal to 0x100, then the character returned is the same as the character passed to the function.

Checks whether a specified name is a valid CObject name.

A name is deemed to be invalid, if it contains any of the characters: "*", "?", ":" i.e. the characters: asterisk, question mark and single colon.

CObject

Retrieves the E32 component version number, which is the kernel architecture version number. For example for EKA2 the major part of the version number will be 2.

Waits for any asynchronous request to complete.

The current thread waits on its request semaphore.

The function completes, and control returns to the caller when the current thread's request semaphore is signalled by any of the service providers which handle these asynchronous requests.

The request status of all outstanding asynchronous requests must be examined to determine which request is complete.

TRequestStatus

Waits for any one of specific asynchronous requests to complete.

The current thread waits on its request semaphore.

The function completes and control returns to the caller when the current thread's request semaphore is signalled by the service provider handling the request associated with any member of aStatusArray[]. Before signalling, the completing service provider sets an appropriate value in the status object, other than KRequestPending.

Note that if other asynchronous requests complete before the ones associated with aStatusArray the request semaphore is adjusted so that knowledge of their completion is not lost. In this a case, a subsequent call to User::WaitForAnyRequest() or User::WaitForRequest() will complete and return immediately.

Waits for a specific asynchronous request to complete.

The current thread waits on its request semaphore.

The function completes and control returns to the caller when the current thread's request semaphore is signalled by the service provider handling the request associated with aStatus. Before signalling, the service provider sets an appropriate value in aStatus, other than KRequestPending.

Note that if other asynchronous requests complete before the one associated with aStatus, the request semaphore is adjusted so that knowledge of their completion is not lost. In this a case, a subsequent call to User::WaitForAnyRequest() or User::WaitForRequest() will complete and return immediately.

KRequestPending

Waits for either of two specific asynchronous requests to complete.

The current thread waits on its request semaphore.

The function completes and control returns to the caller when the current thread's request semaphore is signalled by either the service provider handling the request associated with aStatus1 or the service provider handling the request associated with aStatus2. Before signalling, the completing service provider sets an appropriate value in the status object, other than KRequestPending.

Note that if other asynchronous requests complete before the ones associated with aStatus1 and aStatus2, the request semaphore is adjusted so that knowledge of their completion is not lost. In this a case, a subsequent call to User::WaitForAnyRequest() or User::WaitForRequest() will complete and return immediately.

KRequestPending

Returns the number of heap allocation failures the current debug allocator fail function has caused so far.

This is intended to only be used with fail types RAllocator::EFailNext, RAllocator::EBurstFailNext, RAllocator::EDeterministic and RAllocator::EBurstDeterministic. The return value is unreliable for all other fail types.

RAllocator::TAllocFail

Checks the current number of allocated heap cells for the current thread's default heap, or the kernel heap.

If aCountAll is true, the function checks that the total number of allocated cells on the heap is the same as aCount. If aCountAll is false, the function checks that the number of allocated cells at the current nested level is the same as aCount.

If checking fails, the function raises a panic. Information about the failure is put into the panic category, which takes the form:

ALLOC COUNT\rExpected aaa\rAllocated bbb\rLn: ccc ddd

Where aaa is the value aCount, bbb is the number of allocated heap cells, ccc is a line number, copied from aLineNum, and ddd is a file name, copied from the descriptor aFileName.

Note that the panic number is 1.

Marks the end of heap cell checking at the current nested level for the current thread's default heap, or the kernel heap.

The function checks that the number of heap cells allocated, at the current nested level, is aCount. The most common value for aCount is zero, reflecting the fact that the most common requirement is to check that all memory allocated since a previous call to __DbgStartCheck() has been freed.

A call to this function should match an earlier call to __DbgMarkStart(). If there are more calls to this function than calls to __DbgMarkStart(), then this function raises a USER 51 panic.

If the check fails for a user heap, the function raises an ALLOC: nnnnnnnn panic, where nnnnnnnn is a hexadecimal pointer to the first orphaned heap cell.

If the check fails for the kernel heap, the kernel server raises a KERN-EXEC 17 panic.

Marks the start of heap cell checking for the current thread's default heap, or for the kernel heap.

If earlier calls to __DbgMarkStart() have been made, then this call to __DbgMarkStart() marks the start of a new nested level of heap cell checking.

Every call to __DbgMarkStart() should be matched by a later call to __DbgMarkEnd() to verify that the number of heap cells allocated, at the current nested level, is as expected. This expected number of heap cells is passed to __DbgMarkEnd() as a parameter; however, the most common expected number is zero, reflecting the fact that the most common requirement is to check that all memory allocated since a previous call to __DbgStartCheck() has been freed.

Simulates a heap allocation failure for the current thread's default heap, or the kernel heap.

The failure occurs on subsequent calls to new or any of the functions which allocate memory from the heap.

The timing of the allocation failure depends on the type of allocation failure requested, i.e. on the value of aType.

The simulation of heap allocation failure is cancelled if aType is given the value RAllocator::ENone.

Notes:

1. If the failure type is RHeap::EFailNext, the next attempt to allocate from the heap fails; however, no further failures will occur.

2. For failure types RHeap::EFailNext and RHeap::ENone, set aRate to 1.

Simulates a heap allocation failure for the current thread's default heap, or the kernel heap.

The aBurst failures will occur after subsequent calls to new or any of the functions which allocate memory from the heap.

The timing of the allocation failures will depend on the type of allocation failure requested, i.e. on the value of aType.

The simulation of heap allocation failure is cancelled if aType is given the value RAllocator::ENone.

A set of values that defines the effect that terminating a thread has, either on its owning process or on the whole system.

A thread is said to be critical if its owning process or the entire system terminates when the thread itself terminates.

The meaning of a value when passed to one function is different to its meaning when passed the other function. See the description of each individual value.

User::SetCritical() User::SetProcessCritical()