Delete bundled copy of NSS and replace with README.

nspr/pr/include/prcountr.h

Index: nspr/pr/include/prcountr.h
diff --git a/nspr/pr/include/prcountr.h b/nspr/pr/include/prcountr.h
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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef prcountr_h___
-#define prcountr_h___
-
-/*----------------------------------------------------------------------------
-** prcountr.h -- NSPR Instrumentation counters
-**
-** The NSPR Counter Feature provides a means to "count
-** something." Counters can be dynamically defined, incremented,
-** decremented, set, and deleted under application program
-** control.
-** 																                   
-** The Counter Feature is intended to be used as instrumentation,                  
-** not as operational data. If you need a counter for operational                  
-** data, use native integral types.                                                
-** 																                   
-** Counters are 32bit unsigned intergers. On overflow, a counter                   
-** will wrap. No exception is recognized or reported.                              
-**                                                                                 
-** A counter can be dynamically created using a two level naming
-** convention. A "handle" is returned when the counter is
-** created. The counter can subsequently be addressed by its
-** handle. An API is provided to get an existing counter's handle
-** given the names with  which it was originally created. 
-** Similarly, a counter's name can be retrieved given its handle.
-** 
-** The counter naming convention is a two-level hierarchy. The
-** QName is the higher level of the hierarchy; RName is the
-** lower level. RNames can be thought of as existing within a
-** QName. The same RName can exist within multiple QNames. QNames
-** are unique. The NSPR Counter is not a near-zero overhead
-** feature. Application designers should be aware of 
-** serialization issues when using the Counter API. Creating a
-** counter locks a large asset, potentially causing a stall. This
-** suggest that applications should create counters at component
-** initialization, for example, and not create and destroy them
-** willy-nilly. ... You have been warned.
-** 
-** Incrementing and Adding to counters uses atomic operations.
-** The performance of these operations will vary from platform
-** to platform. On platforms where atomic operations are not
-** supported the overhead may be substantial.
-** 
-** When traversing the counter database with FindNext functions,
-** the instantaneous values of any given counter is that at the
-** moment of extraction. The state of the entire counter database
-** may not be viewed as atomic.
-** 
-** The counter interface may be disabled (No-Op'd) at compile
-** time. When DEBUG is defined at compile time, the Counter
-** Feature is compiled into NSPR and applications invoking it.
-** When DEBUG is not defined, the counter macros compile to
-** nothing. To force the Counter Feature to be compiled into an
-** optimized build, define FORCE_NSPR_COUNTERS at compile time
-** for both NSPR and the application intending to use it.
-** 
-** Application designers should use the macro form of the Counter
-** Feature methods to minimize performance impact in optimized
-** builds. The macros normally compile to nothing on optimized
-** builds.
-** 
-** Application designers should be aware of the effects of
-** debug and optimized build differences when using result of the
-** Counter Feature macros in expressions.
-** 
-** The Counter Feature is thread-safe and SMP safe.
-** 
-** /lth. 09-Jun-1998.
-*/
-
-#include "prtypes.h"
-
-PR_BEGIN_EXTERN_C
-
-/*
-** Opaque counter handle type.
-** ... don't even think of looking in here.
-**
-*/
-typedef void *  PRCounterHandle;
-
-#define PRCOUNTER_NAME_MAX 31
-#define PRCOUNTER_DESC_MAX 255
-
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_DEFINE_COUNTER() -- Define a PRCounterHandle
-** 
-** DESCRIPTION: PR_DEFINE_COUNTER() is used to define a counter
-** handle.
-** 
-*/
-#define PR_DEFINE_COUNTER(name) PRCounterHandle name
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_INIT_COUNTER_HANDLE() -- Set the value of a PRCounterHandle
-** 
-** DESCRIPTION: 
-** PR_INIT_COUNTER_HANDLE() sets the value of a PRCounterHandle
-** to value.
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_INIT_COUNTER_HANDLE(handle,value)\
-    (handle) = (PRCounterHandle)(value)
-#else
-#define PR_INIT_COUNTER_HANDLE(handle,value)
-#endif
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_CreateCounter() -- Create a counter
-** 
-** DESCRIPTION: PR_CreateCounter() creates a counter object and
-** initializes it to zero.
-** 
-** The macro form takes as its first argument the name of the
-** PRCounterHandle to receive the handle returned from
-** PR_CreateCounter().
-** 
-** INPUTS:
-**  qName: The QName for the counter object. The maximum length
-** of qName is defined by PRCOUNTER_NAME_MAX
-** 
-**  rName: The RName for the counter object. The maximum length
-** of qName is defined by PRCOUNTER_NAME_MAX
-** 
-**  descrioption: The description of the counter object. The
-** maximum length of description is defined by
-** PRCOUNTER_DESC_MAX.
-** 
-** OUTPUTS:
-** 
-** RETURNS:
-**  PRCounterHandle.
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_CREATE_COUNTER(handle,qName,rName,description)\
-   (handle) = PR_CreateCounter((qName),(rName),(description))
-#else
-#define PR_CREATE_COUNTER(handle,qName,rName,description)
-#endif
-
-NSPR_API(PRCounterHandle) 
-	PR_CreateCounter( 
-		const char *qName, 
-    	const char *rName, 
-        const char *description 
-);
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_DestroyCounter() -- Destroy a counter object.
-** 
-** DESCRIPTION: PR_DestroyCounter() removes a counter and
-** unregisters its handle from the counter database.
-** 
-** INPUTS:
-**  handle: the PRCounterHandle of the counter to be destroyed.
-** 
-** OUTPUTS: 
-**  The counter is destroyed.
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_DESTROY_COUNTER(handle) PR_DestroyCounter((handle))
-#else
-#define PR_DESTROY_COUNTER(handle)
-#endif
-
-NSPR_API(void) 
-	PR_DestroyCounter( 
-		PRCounterHandle handle 
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_GetCounterHandleFromName() -- Retreive a
-** counter's handle give its name.
-** 
-** DESCRIPTION: PR_GetCounterHandleFromName() retreives a
-** counter's handle from the counter database, given the name
-** the counter was originally created with.
-** 
-** INPUTS:
-**  qName: Counter's original QName.
-**  rName: Counter's original RName.
-** 
-** OUTPUTS:
-** 
-** RETURNS: 
-**  PRCounterHandle or PRCounterError.
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_GET_COUNTER_HANDLE_FROM_NAME(handle,qName,rName)\
-    (handle) = PR_GetCounterHandleFromName((qName),(rName))
-#else
-#define PR_GET_COUNTER_HANDLE_FROM_NAME(handle,qName,rName)
-#endif
-
-NSPR_API(PRCounterHandle) 
-	PR_GetCounterHandleFromName( 
-    	const char *qName, 
-    	const char *rName 
-);
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_GetCounterNameFromHandle() -- Retreive a
-** counter's name, given its handle.
-** 
-** DESCRIPTION: PR_GetCounterNameFromHandle() retreives a
-** counter's name given its handle.
-** 
-** INPUTS:
-**  qName: Where to store a pointer to qName.
-**  rName: Where to store a pointer to rName.
-**  description: Where to store a pointer to description.
-** 
-** OUTPUTS: Pointers to the Counter Feature's copies of the names
-** used when the counters were created.
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_GET_COUNTER_NAME_FROM_HANDLE(handle,qName,rName,description)\
-    PR_GetCounterNameFromHandle((handle),(qName),(rName),(description))
-#else
-#define PR_GET_COUNTER_NAME_FROM_HANDLE(handle,qName,rName,description )
-#endif
-
-NSPR_API(void) 
-	PR_GetCounterNameFromHandle( 
-    	PRCounterHandle handle,  
-	    const char **qName, 
-	    const char **rName, 
-		const char **description 
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_IncrementCounter() -- Add one to the referenced
-** counter.
-** 
-** DESCRIPTION: Add one to the referenced counter.
-** 
-** INPUTS:
-**  handle: The PRCounterHandle of the counter to be incremented
-** 
-** OUTPUTS: The counter is incrementd.
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_INCREMENT_COUNTER(handle) PR_IncrementCounter(handle)
-#else
-#define PR_INCREMENT_COUNTER(handle)
-#endif
-
-NSPR_API(void) 
-	PR_IncrementCounter( 
-		PRCounterHandle handle
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_DecrementCounter() -- Subtract one from the
-** referenced counter
-** 
-** DESCRIPTION: Subtract one from the referenced counter.
-** 
-** INPUTS: 
-**  handle: The PRCounterHandle of the coutner to be
-** decremented.
-** 
-** OUTPUTS: the counter is decremented.
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_DECREMENT_COUNTER(handle) PR_DecrementCounter(handle)
-#else
-#define PR_DECREMENT_COUNTER(handle)
-#endif
-
-NSPR_API(void) 
-	PR_DecrementCounter( 
-		PRCounterHandle handle
-);
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_AddToCounter() -- Add a value to a counter.
-** 
-** DESCRIPTION: Add value to the counter referenced by handle.
-** 
-** INPUTS:
-**  handle: the PRCounterHandle of the counter to be added to.
-** 
-**  value: the value to be added to the counter.
-** 
-** OUTPUTS: new value for counter.
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_ADD_TO_COUNTER(handle,value)\
-    PR_AddToCounter((handle),(value))
-#else
-#define PR_ADD_TO_COUNTER(handle,value)
-#endif
-
-NSPR_API(void) 
-	PR_AddToCounter( 
-    	PRCounterHandle handle, 
-	    PRUint32 value 
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_SubtractFromCounter() -- A value is subtracted
-** from a counter.
-** 
-** DESCRIPTION:
-** Subtract a value from a counter.
-** 
-** INPUTS:
-**  handle: the PRCounterHandle of the counter to be subtracted
-** from.
-** 
-**  value: the value to be subtracted from the counter.
-** 
-** OUTPUTS: new value for counter
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_SUBTRACT_FROM_COUNTER(handle,value)\
-    PR_SubtractFromCounter((handle),(value))
-#else
-#define PR_SUBTRACT_FROM_COUNTER(handle,value)
-#endif
-
-NSPR_API(void) 
-	PR_SubtractFromCounter( 
-    	PRCounterHandle handle, 
-	    PRUint32 value 
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_GetCounter() -- Retreive the value of a counter
-** 
-** DESCRIPTION:
-** Retreive the value of a counter.
-** 
-** INPUTS:
-**  handle: the PR_CounterHandle of the counter to be retreived
-** 
-** OUTPUTS:
-** 
-** RETURNS: The value of the referenced counter
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_GET_COUNTER(counter,handle)\
-    (counter) = PR_GetCounter((handle))
-#else
-#define PR_GET_COUNTER(counter,handle) 0
-#endif
-
-NSPR_API(PRUint32) 
-	PR_GetCounter( 
-		PRCounterHandle handle 
-);
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_SetCounter() -- Replace the content of counter
-** with value.
-** 
-** DESCRIPTION: The contents of the referenced counter are
-** replaced by value.
-** 
-** INPUTS:
-**  handle: the PRCounterHandle of the counter whose contents
-** are to be replaced.
-** 
-**  value: the new value of the counter.
-** 
-** OUTPUTS:
-** 
-** RETURNS: void
-** 
-** RESTRICTIONS:
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_SET_COUNTER(handle,value) PR_SetCounter((handle),(value))
-#else
-#define PR_SET_COUNTER(handle,value)
-#endif
-
-NSPR_API(void) 
-	PR_SetCounter( 
-		PRCounterHandle handle, 
-		PRUint32 value 
-);
-
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_FindNextCounterQname() -- Retreive the next QName counter
-** handle iterator
-** 
-** DESCRIPTION:
-** PR_FindNextCounterQname() retreives the first or next Qname
-** the counter data base, depending on the value of handle. When
-** handle is NULL, the function attempts to retreive the first
-** QName handle in the database. When handle is a handle previosly
-** retreived QName handle, then the function attempts to retreive
-** the next QName handle.
-** 
-** INPUTS: 
-**  handle: PRCounterHandle or NULL.
-** 
-** OUTPUTS: returned
-** 
-** RETURNS: PRCounterHandle or NULL when no more QName counter
-** handles are present.
-** 
-** RESTRICTIONS:
-**  A concurrent PR_CreateCounter() or PR_DestroyCounter() may
-** cause unpredictable results.
-** 
-** A PRCounterHandle returned from this function may only be used
-** in another PR_FindNextCounterQname() function call; other
-** operations may cause unpredictable results.
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_FIND_NEXT_COUNTER_QNAME(next,handle)\
-    (next) = PR_FindNextCounterQname((handle))
-#else
-#define PR_FIND_NEXT_COUNTER_QNAME(next,handle) NULL
-#endif
-
-NSPR_API(PRCounterHandle) 
-	PR_FindNextCounterQname( 
-        PRCounterHandle handle
-);
-
-/* -----------------------------------------------------------------------
-** FUNCTION: PR_FindNextCounterRname() -- Retreive the next RName counter
-** handle iterator
-** 
-** DESCRIPTION:
-** PR_FindNextCounterRname() retreives the first or next RNname
-** handle from the counter data base, depending on the
-** value of handle. When handle is NULL, the function attempts to
-** retreive the first RName handle in the database. When handle is
-** a handle previosly retreived RName handle, then the function
-** attempts to retreive the next RName handle.
-** 
-** INPUTS:
-**  handle: PRCounterHandle or NULL.
-**  qhandle: PRCounterHandle of a previously aquired via
-** PR_FIND_NEXT_QNAME_HANDLE()
-** 
-** OUTPUTS: returned
-** 
-** RETURNS: PRCounterHandle or NULL when no more RName counter
-** handles are present.
-** 
-** RESTRICTIONS:
-**  A concurrent PR_CreateCounter() or PR_DestroyCounter() may
-** cause unpredictable results.
-** 
-** A PRCounterHandle returned from this function may only be used
-** in another PR_FindNextCounterRname() function call; other
-** operations may cause unpredictable results.
-** 
-*/
-#if defined(DEBUG) || defined(FORCE_NSPR_COUNTERS)
-#define PR_FIND_NEXT_COUNTER_RNAME(next,rhandle,qhandle)\
-    (next) = PR_FindNextCounterRname((rhandle),(qhandle))
-#else
-#define PR_FIND_NEXT_COUNTER_RNAME(next,rhandle,qhandle)
-#endif
-
-NSPR_API(PRCounterHandle) 
-	PR_FindNextCounterRname( 
-        PRCounterHandle rhandle,
-        PRCounterHandle qhandle
-);
-
-PR_END_EXTERN_C
-
-#endif /* prcountr_h___ */