Description:

This type is used for debugging and asserting ALib lock (mutex) types. With debug compilations the shared lock types hold one member of this struct, which aggregates all debug information.

Definition at line 178 of file dbgasserters.inl.

Inheritance diagram for alib::threads::DbgSharedLockAsserter:

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Collaboration diagram for alib::threads::DbgSharedLockAsserter:

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Public Static Field Index:
static ALIB_DLL const char *	ASSERTION_FORMAT_SHARED

Public Static Field Index: inherited from alib::threads::DbgLockAsserter
static ALIB_DLL const char *	ASSERTION_FORMAT

Public Field Index:
std::atomic< int >	CntSharedAcquirements {0}
	The number of shared acquirements.

CallerInfo	SAcqCI
	The most recent shared acquirement's caller.

CallerInfo	SRelCI
	The most recent shared release caller.

Public Field Index: inherited from alib::threads::DbgLockAsserter
CallerInfo	AcqCI
	Source location of the most recent acquirement.

std::atomic< int >	CntAcquirements {0}
	The number of shared acquirements.

const char *	Name ="<unnamed>"

int	RecursionLimit =10

CallerInfo	RelCI
	Source location of the most recent release.

Ticks::Duration	WaitTimeLimit = Ticks::Duration::FromAbsoluteSeconds(2)

Public Method Index:
virtual	~DbgSharedLockAsserter () override
	Destructor.

ALIB_DLL void	DoAssert (int type, const CallerInfo &assertCI, const CallerInfo &ci, const char *headline) override

bool	IsSharedOwnedByAnyThread () const

void	ReleaseShared (const CallerInfo &assertCI, const CallerInfo &requestCI)

void	SetOwner (const CallerInfo &assertCI, const CallerInfo &requestCI)

void	SetSharedOwner (const CallerInfo &assertCI, const CallerInfo &requestCI, int warnLimit)

Public Method Index: inherited from alib::threads::DbgLockAsserter
virtual	~DbgLockAsserter ()
	Destructor.

void	AssertNotOwning (const CallerInfo &assertCI, const CallerInfo &ci, const char *headline)

void	AssertOwned (const CallerInfo &assertCI, const CallerInfo &ci)

ALIB_DLL Thread *	GetOwner () const

bool	IsOwnedByCurrentThread () const

void	Release (const CallerInfo &assertCI, const CallerInfo &requestCI)

void	SetOwner (const CallerInfo &assertCI, const CallerInfo &requestCI)

ALIB_DLL void	SetRecursiveOwner (const CallerInfo &assertCI, const CallerInfo &requestCI)

bool	WillRelease () const noexcept

Field Details:

◆ ASSERTION_FORMAT_SHARED

const char * alib::threads::DbgSharedLockAsserter::ASSERTION_FORMAT_SHARED

static

Initial value:

=
"Multi-Threading {} in Shared-Lock \"{}\""   "\n"
"                       Message: {}"         "\n"
"          In (Member-)Function: {}"         "\n"
"                      Is Owned: {} ({})"    "\n"
"               Is Shared Owned: {} ({})"    "\n"
                                             "\n"
"                     Called By: {}::{}"     "\n"
"                            At: {}:{}"      "\n"
"                        Thread: {}"         "\n"
                                             "\n"
"         Latest Acquisition By: {}::{}"     "\n"
"                            At: {}:{}"      "\n"
"                        Thread: {}"         "\n"
"             Latest Release By: {}::{}"     "\n"
"                            At: {}:{}"      "\n"
"                        Thread: {}"         "\n"
                                             "\n"
"  Latest Shared Acquisition By: {}::{}"     "\n"
"                            At: {}:{}"      "\n"
"                        Thread: {}"         "\n"
"       Latest SharedRelease By: {}::{}"     "\n"
"                            At: {}:{}"      "\n"
"                        Thread: {}"         "\n"

The format string used to write exceptions to the console. This string can be changed if the source information is not "clickable" in a user's development environment.

The default string is optimized for JetBrains CLion and is defined as:

Multi-Threading {} in Shared-Lock \"{}\"
                       Message: {}
          In (Member-)Function: {}
                      Is Owned: {} ({})
               Is Shared Owned: {} ({})

                     Called By: {}::{}
                            At: {}:{}
                        Thread: {}

         Latest Acquisition By: {}::{}
                            At: {}:{}
                        Thread: {}
             Latest Release By: {}::{}
                            At: {}:{}
                        Thread: {}

  Latest Shared Acquisition By: {}::{}
                            At: {}:{}
                        Thread: {}
       Latest SharedRelease By: {}::{}
                            At: {}:{}
                        Thread: {}

The placeholder fields that this format string refers to are set as follows:

0: String "Assertion" or "Warning"
1: Debug-name of the lock.
2: Headline.
3: Function name.
4: Is acquired (true/false).
5: number of acquirements.
6: Is shared acquired (true/false).
7: number of shared-acquirements.
8-12: CallerInfo of caller.
13-17: CallerInfo of the latest acquisition.
18-22: CallerInfo of the latest release.
23-27: CallerInfo of the latest shared-acquisition.
32-36: CallerInfo of the latest shared-release.

Definition at line 233 of file dbgasserters.inl.

◆ CntSharedAcquirements

std::atomic<int> alib::threads::DbgSharedLockAsserter::CntSharedAcquirements {0}

The number of shared acquirements.

Definition at line 182 of file dbgasserters.inl.

◆ SAcqCI

CallerInfo alib::threads::DbgSharedLockAsserter::SAcqCI

The most recent shared acquirement's caller.

Definition at line 180 of file dbgasserters.inl.

◆ SRelCI

CallerInfo alib::threads::DbgSharedLockAsserter::SRelCI

The most recent shared release caller.

Definition at line 181 of file dbgasserters.inl.

Constructor(s) / Destructor Details:

◆ ~DbgSharedLockAsserter()

virtual alib::threads::DbgSharedLockAsserter::~DbgSharedLockAsserter ( )

inlineoverridevirtual

Destructor.

Definition at line 237 of file dbgasserters.inl.

Method Details:

◆ DoAssert()

void alib::threads::DbgSharedLockAsserter::DoAssert	(	int	type,
		const CallerInfo &	assertCI,
		const CallerInfo &	ci,
		const char *	headline )

overridevirtual

Assembles assertion info and raises a warning or an error.

See also: Field ASSERTION_FORMAT which allows changing the output format to achieve 'clickable' assertion messages.

Parameters

type	0= assertion, 1= warning.
assertCI	Location where the assertion is placed.
ci	Location of the call to the method that asserted.
headline	The message.

Reimplemented from alib::threads::DbgLockAsserter.

Definition at line 98 of file dbgasserters.cpp.

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◆ IsSharedOwnedByAnyThread()

bool alib::threads::DbgSharedLockAsserter::IsSharedOwnedByAnyThread ( ) const

inline

Returns true if currently a reader is registered. This method is used to create assertions. of course, to detect assertions, it would be more efficient to check if shared ownership is with the current thread, but a check on this would cost a lot of overhead to realize. This way, at least assertions can be raised when no other thread acquired this lock in shared mode.

Available only in debug-builds.

Returns: true, if the lock is owned by this thread, false if it is owned by another thread or not owned.

Definition at line 259 of file dbgasserters.inl.

◆ ReleaseShared()

void alib::threads::DbgSharedLockAsserter::ReleaseShared	(	const CallerInfo &	assertCI,
		const CallerInfo &	requestCI )

inline

Asserts that this lock is shared-owned by the thread in ci.

Parameters

assertCI	Location where the release is implemented.
requestCI	Location where the release was requested (the caller of assertCI)

Definition at line 296 of file dbgasserters.inl.

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◆ SetOwner()

void alib::threads::DbgSharedLockAsserter::SetOwner	(	const CallerInfo &	assertCI,
		const CallerInfo &	requestCI )

inline

Sets the given caller as the current owner. Asserts that CntAcquirements is 0 when called.

Parameters

assertCI	Location where ownership was implemented (usually the lock).
requestCI	Location where ownership was requested (the caller of assertCI)

Definition at line 265 of file dbgasserters.inl.

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◆ SetSharedOwner()

void alib::threads::DbgSharedLockAsserter::SetSharedOwner	(	const CallerInfo &	assertCI,
		const CallerInfo &	requestCI,
		int	warnLimit )

inline

Sets the given caller as a current shared-owner. Asserts that CntAcquirements is 0 when called.

Parameters

assertCI	Location where ownership was implemented (usually the lock).
requestCI	Location where ownership was requested (the caller of assertCI)
warnLimit	If this number of shared acquisitions is exceeded, a warning is given.

Definition at line 280 of file dbgasserters.inl.

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The documentation for this struct was generated from the following files:

Description:

Public Static Field Index:

Public Field Index:

Public Method Index:

Field Details:

◆ ASSERTION_FORMAT_SHARED

◆ CntSharedAcquirements

◆ SAcqCI

◆ SRelCI

Constructor(s) / Destructor Details:

◆ ~DbgSharedLockAsserter()

Method Details:

◆ DoAssert()

◆ IsSharedOwnedByAnyThread()

◆ ReleaseShared()

◆ SetOwner()

◆ SetSharedOwner()