Critical Sections Documentation Update
Robert Shearman
rob at codeweavers.com
Sun Sep 5 06:26:57 CDT 2004
Changelog:
Improve documentation for critical sections.
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Index: wine/dlls/ntdll/critsection.c
===================================================================
RCS file: /home/wine/wine/dlls/ntdll/critsection.c,v
retrieving revision 1.26
diff -u -p -r1.26 critsection.c
--- wine/dlls/ntdll/critsection.c 17 Jun 2004 23:11:08 -0000 1.26
+++ wine/dlls/ntdll/critsection.c 5 Sep 2004 11:19:43 -0000
@@ -77,13 +77,18 @@ static inline HANDLE get_semaphore( RTL_
/***********************************************************************
* RtlInitializeCriticalSection (NTDLL.@)
*
- * Initialise a new RTL_CRITICAL_SECTION.
+ * Initializes a new critical section.
*
* PARAMS
- * crit [O] Critical section to initialise
+ * crit [O] Critical section to initialize
*
- * RETURN
+ * RETURNS
* STATUS_SUCCESS.
+ *
+ * SEE
+ * RtlInitializeCriticalSectionAndSpinCount(), RtlDeleteCriticalSection(),
+ * RtlEnterCriticalSection(), RtlLeaveCriticalSection(),
+ * RtlTryEnterCriticalSection(), RtlSetCriticalSectionSpinCount()
*/
NTSTATUS WINAPI RtlInitializeCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -93,18 +98,22 @@ NTSTATUS WINAPI RtlInitializeCriticalSec
/***********************************************************************
* RtlInitializeCriticalSectionAndSpinCount (NTDLL.@)
*
- * Initialise a new RTL_CRITICAL_SECTION with a given spin count.
+ * Initializes a new critical section with a given spin count.
*
* PARAMS
- * crit [O] Critical section to initialise
+ * crit [O] Critical section to initialize
* spincount [I] Spin count for crit
*
* RETURNS
* STATUS_SUCCESS.
*
* NOTES
- * The InitializeCriticalSectionAndSpinCount() (KERNEL32) function is
- * available on NT4SP3 or later, and Win98 or later.
+ * Available on NT4 SP3 or later.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlDeleteCriticalSection(),
+ * RtlEnterCriticalSection(), RtlLeaveCriticalSection(),
+ * RtlTryEnterCriticalSection(), RtlSetCriticalSectionSpinCount()
*/
NTSTATUS WINAPI RtlInitializeCriticalSectionAndSpinCount( RTL_CRITICAL_SECTION *crit, ULONG spincount )
{
@@ -139,7 +148,7 @@ NTSTATUS WINAPI RtlInitializeCriticalSec
* Sets the spin count of a critical section.
*
* PARAMS
- * crit [O] Critical section
+ * crit [I/O] Critical section
* spincount [I] Spin count for crit
*
* RETURNS
@@ -147,6 +156,11 @@ NTSTATUS WINAPI RtlInitializeCriticalSec
*
* NOTES
* If the system is not SMP, spincount is ignored and set to 0.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlLeaveCriticalSection(), RtlTryEnterCriticalSection()
*/
ULONG WINAPI RtlSetCriticalSectionSpinCount( RTL_CRITICAL_SECTION *crit, ULONG spincount )
{
@@ -159,13 +173,18 @@ ULONG WINAPI RtlSetCriticalSectionSpinCo
/***********************************************************************
* RtlDeleteCriticalSection (NTDLL.@)
*
- * Free the resources used by an RTL_CRITICAL_SECTION.
+ * Frees the resources used by an RTL_CRITICAL_SECTION.
*
* PARAMS
* crit [I/O] Critical section to free
*
* RETURNS
* STATUS_SUCCESS.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlLeaveCriticalSection(), RtlTryEnterCriticalSection()
*/
NTSTATUS WINAPI RtlDeleteCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -190,13 +209,22 @@ NTSTATUS WINAPI RtlDeleteCriticalSection
/***********************************************************************
* RtlpWaitForCriticalSection (NTDLL.@)
*
- * Wait for an RTL_CRITICAL_SECTION to become free.
+ * Waits for a busy critical section to become free.
*
* PARAMS
* crit [I/O] Critical section to wait for
*
* RETURNS
* STATUS_SUCCESS.
+ *
+ * NOTES
+ * Use RtlEnterCriticalSection() instead of this function as it is often much
+ * faster.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlLeaveCriticalSection(), RtlTryEnterCriticalSection()
*/
NTSTATUS WINAPI RtlpWaitForCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -244,6 +272,24 @@ NTSTATUS WINAPI RtlpWaitForCriticalSecti
/***********************************************************************
* RtlpUnWaitCriticalSection (NTDLL.@)
+ *
+ * Notifies other threads waiting on the busy critical section that it has
+ * become free.
+ *
+ * PARAMS
+ * crit [I/O] Critical section
+ *
+ * RETURNS
+ * STATUS_SUCCESS.
+ *
+ * NOTES
+ * Use RtlLeaveCriticalSection() instead of this function as it is often much
+ * faster.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlLeaveCriticalSection(), RtlTryEnterCriticalSection()
*/
NTSTATUS WINAPI RtlpUnWaitCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -257,7 +303,7 @@ NTSTATUS WINAPI RtlpUnWaitCriticalSectio
/***********************************************************************
* RtlEnterCriticalSection (NTDLL.@)
*
- * Enter an RTL_CRITICAL_SECTION.
+ * Enters a critical section, waiting for it to become available if necessary.
*
* PARAMS
* crit [I/O] Critical section to enter
@@ -265,8 +311,10 @@ NTSTATUS WINAPI RtlpUnWaitCriticalSectio
* RETURNS
* STATUS_SUCCESS. The critical section is held by the caller.
*
- * NOTES
- * The caller will wait until the critical section is availale.
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlSetCriticalSectionSpinCount(),
+ * RtlLeaveCriticalSection(), RtlTryEnterCriticalSection()
*/
NTSTATUS WINAPI RtlEnterCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -307,7 +355,7 @@ done:
/***********************************************************************
* RtlTryEnterCriticalSection (NTDLL.@)
*
- * Enter an RTL_CRITICAL_SECTION without waiting.
+ * Tries to enter a critical section without waiting.
*
* PARAMS
* crit [I/O] Critical section to enter
@@ -315,6 +363,11 @@ done:
* RETURNS
* Success: TRUE. The critical section is held by the caller.
* Failure: FALSE. The critical section is currently held by another thread.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlLeaveCriticalSection(), RtlSetCriticalSectionSpinCount()
*/
BOOL WINAPI RtlTryEnterCriticalSection( RTL_CRITICAL_SECTION *crit )
{
@@ -338,13 +391,18 @@ BOOL WINAPI RtlTryEnterCriticalSection(
/***********************************************************************
* RtlLeaveCriticalSection (NTDLL.@)
*
- * Leave an RTL_CRITICAL_SECTION.
+ * Leaves a critical section.
*
* PARAMS
- * crit [I/O] Critical section to enter
+ * crit [I/O] Critical section to leave.
*
* RETURNS
* STATUS_SUCCESS.
+ *
+ * SEE
+ * RtlInitializeCriticalSection(), RtlInitializeCriticalSectionAndSpinCount(),
+ * RtlDeleteCriticalSection(), RtlEnterCriticalSection(),
+ * RtlSetCriticalSectionSpinCount(), RtlTryEnterCriticalSection()
*/
NTSTATUS WINAPI RtlLeaveCriticalSection( RTL_CRITICAL_SECTION *crit )
{
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