DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (72ee4800d415)

VCS Links

PRTraceEntry

PRTraceOption

Macros

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646
/* -*- 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 prtrace_h___
#define prtrace_h___
/*
** prtrace.h -- NSPR's Trace Facility.  		           
**                                                               		           
** The Trace Facility provides a means to trace application				           
** program events within a process. When implementing an         		           
** application program an engineer may insert a "Trace" function 		           
** call, passing arguments to be traced. The "Trace" function     		           
** combines the user trace data with identifying data and        		           
** writes this data in time ordered sequence into a circular     		           
** in-memory buffer; when the buffer fills, it wraps.
**                                                               		           
** Functions are provided to set and/or re-configure the size of		           
** the trace buffer, control what events are recorded in the			           
** buffer, enable and disable tracing based on specific user			           
** supplied data and other control functions. Methods are provided		           
** to record the trace entries in the in-memory trace buffer to
** a file.
**                                                               		           
** Tracing may cause a performance degredation to the application		           
** depending on the number and placement of calls to the tracing		           
** facility. When tracing is compiled in and all tracing is				           
** disabled via the runtime controls, the overhead should be			           
** minimal. ... Famous last words, eh?									           
** 																                   
** When DEBUG is defined at compile time, the Trace Facility is                    
** compiled as part of NSPR and any application using NSPR's                       
** header files will have tracing compiled in. When DEBUG is not                   
** defined, the Trace Facility is not compiled into NSPR nor                       
** exported in its header files.  If the Trace Facility is                         
** desired in a non-debug build, then FORCE_NSPR_TRACE may be                      
** defined at compile time for both the optimized build of NSPR                    
** and the application. NSPR and any application using  NSPR's                     
** Trace Facility must be compiled with the same level of trace                    
** conditioning or unresolved references may be realized at link                   
** time.                                                                           
**                                                                                 
** For any of the Trace Facility methods that requires a trace                     
** handle as an input argument, the caller must ensure that the                    
** trace handle argument is valid. An invalid trace handle                         
** argument may cause unpredictable results.                                       
**                                                                                 
** Trace Facility methods are thread-safe and SMP safe.                            
**                                                                                 
** Users of the Trace Facility should use the defined macros to                     
** invoke trace methods, not the function calls directly. e.g.                      
** PR_TRACE( h1,0,1,2, ...); not PR_Trace(h1,0,1,2, ...);
**                                                                                  
** Application designers should be aware of the effects of
** debug and optimized build differences when using result of the
** Trace Facility macros in expressions.
** 
** See Also: prcountr.h                                                                                 
**                                                                                  
** /lth. 08-Jun-1998.                                                                                  
*/

#include "prtypes.h"
#include "prthread.h"
#include "prtime.h"

PR_BEGIN_EXTERN_C

/*
** Opaque type for the trace handle 
** ... Don't even think about looking in here.
**
*/
typedef void *  PRTraceHandle;

/*
** PRTraceEntry -- A trace entry in the in-memory trace buffer
** looks like this.
**
*/
typedef struct PRTraceEntry
{
    PRThread        *thread;        /* The thread creating the trace entry */
    PRTraceHandle   handle;         /* PRTraceHandle creating the trace entry */
    PRTime          time;           /* Value of PR_Now() at time of trace entry */
    PRUint32        userData[8];    /* user supplied trace data */
} PRTraceEntry;

/*
** PRTraceOption -- command operands to
** PR_[Set|Get]TraceOption(). See descriptive meanings there.
**
*/
typedef enum PRTraceOption
{
    PRTraceBufSize,
    PRTraceEnable,              
    PRTraceDisable,
    PRTraceSuspend,
    PRTraceResume,
    PRTraceSuspendRecording,
    PRTraceResumeRecording,
    PRTraceLockHandles,
    PRTraceUnLockHandles,
    PRTraceStopRecording
} PRTraceOption;

/* -----------------------------------------------------------------------
** FUNCTION: PR_DEFINE_TRACE() -- Define a PRTraceHandle
** 
** DESCRIPTION: PR_DEFINE_TRACE() is used to define a trace
** handle.
** 
*/
#define PR_DEFINE_TRACE(name) PRTraceHandle name

/* -----------------------------------------------------------------------
** FUNCTION: PR_INIT_TRACE_HANDLE() -- Set the value of a PRTraceHandle
** 
** DESCRIPTION: 
** PR_INIT_TRACE_HANDLE() sets the value of a PRTraceHandle
** to value. e.g. PR_INIT_TRACE_HANDLE( myHandle, NULL );
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_INIT_TRACE_HANDLE(handle,value)\
    (handle) = (PRCounterHandle)(value)
#else
#define PR_INIT_TRACE_HANDLE(handle,value)
#endif


/* -----------------------------------------------------------------------
** FUNCTION: PR_CreateTrace() -- Create a trace handle
** 
** DESCRIPTION:
**  PR_CreateTrace() creates a new trace handle. Tracing is
**  enabled for this handle when it is created. The trace handle
**  is intended for use in other Trace Facility calls.
**  
**  PR_CreateTrace() registers the QName, RName and description
**  data so that this data can be retrieved later.
** 
** INPUTS: 
**  qName: pointer to string. QName for this trace handle. 
** 
**  rName: pointer to string. RName for this trace handle. 
** 
**  description: pointer to string. Descriptive data about this
**  trace handle.
**
** OUTPUTS:
**  Creates the trace handle. 
**  Registers the QName and RName with the trace facility.
** 
** RETURNS: 
**  PRTraceHandle
** 
** RESTRICTIONS:
**  qName is limited to 31 characters.
**  rName is limited to 31 characters.
**  description is limited to 255 characters.
** 
*/
#define PRTRACE_NAME_MAX 31
#define PRTRACE_DESC_MAX 255

#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_CREATE_TRACE(handle,qName,rName,description)\
    (handle) = PR_CreateTrace((qName),(rName),(description))
#else
#define PR_CREATE_TRACE(handle,qName,rName,description)
#endif

NSPR_API(PRTraceHandle)
	PR_CreateTrace( 
    	const char *qName,          /* QName for this trace handle */
	    const char *rName,          /* RName for this trace handle */
	    const char *description     /* description for this trace handle */
);


/* -----------------------------------------------------------------------
** FUNCTION: PR_DestroyTrace() -- Destroy a trace handle
** 
** DESCRIPTION: 
**  PR_DestroyTrace() removes the referenced trace handle and
** associated QName, RName and description data from the Trace
** Facility.
** 
** INPUTS: handle. A PRTraceHandle
** 
** OUTPUTS: 
**  The trace handle is unregistered.
**  The QName, RName and description are removed.
** 
** RETURNS: void
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_DESTROY_TRACE(handle)\
    PR_DestroyTrace((handle))
#else
#define PR_DESTROY_TRACE(handle)
#endif

NSPR_API(void) 
	PR_DestroyTrace( 
		PRTraceHandle handle    /* Handle to be destroyed */
);


/* -----------------------------------------------------------------------
** FUNCTION: PR_Trace() -- Make a trace entry in the in-memory trace
** 
** DESCRIPTION:
** PR_Trace() makes an entry in the in-memory trace buffer for
** the referenced trace handle. The next logically available
** PRTraceEntry is used; when the next trace entry would overflow
** the trace table, the table wraps.
**
** PR_Trace() for a specific trace handle may be disabled by
** calling PR_SetTraceOption() specifying PRTraceDisable for the
** trace handle to be disabled.
** 
** INPUTS:
** handle: PRTraceHandle. The trace handle for this trace.
** 
** userData[0..7]: unsigned 32bit integers. user supplied data
** that is copied into the PRTraceEntry
** 
** OUTPUTS:
**  A PRTraceEntry is (conditionally) formatted in the in-memory
** trace buffer.
** 
** RETURNS: void.
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_TRACE(handle,ud0,ud1,ud2,ud3,ud4,ud5,ud6,ud7)\
    PR_Trace((handle),(ud0),(ud1),(ud2),(ud3),(ud4),(ud5),(ud6),(ud7))
#else
#define PR_TRACE(handle,ud0,ud1,ud2,ud3,ud4,ud5,ud6,ud7)
#endif

NSPR_API(void) 
	PR_Trace( 
    	PRTraceHandle handle,       /* use this trace handle */
	    PRUint32    userData0,      /* User supplied data word 0 */
	    PRUint32    userData1,      /* User supplied data word 1 */
	    PRUint32    userData2,      /* User supplied data word 2 */
	    PRUint32    userData3,      /* User supplied data word 3 */
	    PRUint32    userData4,      /* User supplied data word 4 */
	    PRUint32    userData5,      /* User supplied data word 5 */
	    PRUint32    userData6,      /* User supplied data word 6 */
	    PRUint32    userData7       /* User supplied data word 7 */
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_SetTraceOption() -- Control the Trace Facility
** 
** DESCRIPTION:
** PR_SetTraceOption() controls the Trace Facility. Depending on
** command and value, attributes of the Trace Facility may be
** changed.
** 
** INPUTS:
**  command: An enumerated value in the set of PRTraceOption.
**  value: pointer to the data to be set. Type of the data is
**  dependent on command; for each value of command, the type
**  and meaning of dereferenced value is shown.
**
**  PRTraceBufSize: unsigned long: the size of the trace buffer,
** in bytes.
** 
**  PRTraceEnable: PRTraceHandle. The trace handle to be
** enabled.
** 
**  PRTraceDisable: PRTraceHandle. The trace handle to be
** disabled.
** 
**  PRTraceSuspend: void. value must be NULL. All tracing is
** suspended.
** 
**  PRTraceResume: void. value must be NULL. Tracing for all
** previously enabled, prior to a PRTraceSuspend, is resumed.
** 
**  PRTraceStopRecording: void. value must be NULL. If recording
** (see: ** PR_RecordTraceEntries()) is being done, 
** PRTraceStopRecording causes PR_RecordTraceEntries() to return
** to its caller. If recording is not being done, this function
** has no effect.
** 
**  PRTraceSuspendRecording: void. Must be NULL. If recording is
** being done, PRTraceSuspendRecording causes further writes to
** the trace file to be suspended. Data in the in-memory
** trace buffer that would ordinarily be written to the
** trace file will not be written. Trace entries will continue
** to be entered in the in-memory buffer. If the Trace Facility
** recording is already in a suspended state, the call has no
** effect.
** 
**  PRTraceResumeRecording: void. value must be NULL. If
** recording for the Trace Facility has been previously been
** suspended, this causes recording to resume. Recording resumes
** with the next in-memory buffer segment that would be written
** if trace recording had not been suspended. If recording is
** not currently suspended, the call has no effect.
** 
**  PRTraceLockHandles: void. value must be NULL. Locks the
** trace handle lock. While the trace handle lock is held,
** calls to PR_CreateTrace() will block until the lock is
** released.
** 
**  PRTraceUnlockHandles: void. value must be NULL. Unlocks the
** trace handle lock.
** 
** OUTPUTS:
**  The operation of the Trace Facility may be changed.
** 
** RETURNS: void
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_SET_TRACE_OPTION(command,value)\
    PR_SetTraceOption((command),(value))
#else
#define PR_SET_TRACE_OPTION(command,value)
#endif

NSPR_API(void) 
	PR_SetTraceOption( 
	    PRTraceOption command,  /* One of the enumerated values */
	    void *value             /* command value or NULL */
);


/* -----------------------------------------------------------------------
** FUNCTION: PR_GetTraceOption() -- Retrieve settings from the Trace Facility
** 
** DESCRIPTION:
** PR_GetTraceOption() retrieves the current setting of the
** Trace Facility control depending on command.
** 
** 
**  PRTraceBufSize: unsigned long: the size of the trace buffer,
** in bytes.
** 
** 
** INPUTS:
**  command: one of the enumerated values in PRTraceOptions
** valid for PR_GetTraceOption().
** 
** OUTPUTS:
**  dependent on command.
** 
** RETURNS: void
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_GET_TRACE_OPTION(command,value)\
    PR_GetTraceOption((command),(value))
#else
#define PR_GET_TRACE_OPTION(command,value)
#endif

NSPR_API(void) 
	PR_GetTraceOption( 
    	PRTraceOption command,  /* One of the enumerated values */
	    void *value             /* command value or NULL */
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_GetTraceHandleFromName() -- Retrieve an existing
** handle by name.
** 
** DESCRIPTION:
** PR_GetTraceHandleFromName() retreives an existing tracehandle
** using the name specified by qName and rName.
** 
** INPUTS:
**  qName: pointer to string. QName for this trace handle. 
** 
**  rName: pointer to string. RName for this trace handle. 
** 
** 
** OUTPUTS: returned.
** 
** RETURNS: 
**  PRTraceHandle associated with qName and rName or NULL when
** there is no match.
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_GET_TRACE_HANDLE_FROM_NAME(handle,qName,rName)\
    (handle) = PR_GetTraceHandleFromName((qName),(rName))
#else
#define PR_GET_TRACE_HANDLE_FROM_NAME(handle,qName,rName)
#endif

NSPR_API(PRTraceHandle) 
	PR_GetTraceHandleFromName( 
    	const char *qName,      /* QName search argument */
        const char *rName       /* RName search argument */
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_GetTraceNameFromHandle() -- Retreive trace name
** by bandle.
** 
** DESCRIPTION:
** PR_GetTraceNameFromHandle() retreives the existing qName,
** rName, and description for the referenced trace handle.
** 
** INPUTS: handle: PRTraceHandle.
** 
** OUTPUTS: pointers to the Trace Facility's copy of qName,
** rName and description. ... Don't mess with these values.
** They're mine.
** 
** RETURNS: void
** 
** RESTRICTIONS:
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_GET_TRACE_NAME_FROM_HANDLE(handle,qName,rName,description)\
    PR_GetTraceNameFromHandle((handle),(qName),(rName),(description))
#else
#define PR_GET_TRACE_NAME_FROM_HANDLE(handle,qName,rName,description)
#endif

NSPR_API(void) 
	PR_GetTraceNameFromHandle( 
    	PRTraceHandle handle,       /* handle as search argument */
	    const char **qName,         /* pointer to associated QName */
	    const char **rName,         /* pointer to associated RName */
    	const char **description    /* pointer to associated description */
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_FindNextTraceQname() -- Retrieive a QName handle
** iterator.
** 
** DESCRIPTION:
** PR_FindNextTraceQname() retreives the first or next trace
** QName handle, depending on the value of handle, from the trace
** database. The PRTraceHandle returned can be used as an
** iterator to traverse the QName handles in the Trace database.
** 
** INPUTS:
**  handle: When NULL, PR_FindNextQname() returns the first QName
** handle. When a handle is a valid PRTraceHandle previously
** retreived using PR_FindNextQname() the next QName handle is
** retreived.
** 
** OUTPUTS: returned.
** 
** RETURNS: 
**  PRTraceHandle or NULL when there are no trace handles.
** 
** RESTRICTIONS:
**  Iterating thru the trace handles via FindFirst/FindNext
** should be done under protection of the trace handle lock.
** See: PR_SetTraceOption( PRLockTraceHandles ).
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_FIND_NEXT_TRACE_QNAME(next,handle)\
    (next) = PR_FindNextTraceQname((handle))
#else
#define PR_FIND_NEXT_TRACE_QNAME(next,handle)
#endif

NSPR_API(PRTraceHandle) 
	PR_FindNextTraceQname( 
        PRTraceHandle handle
);


/* -----------------------------------------------------------------------
** FUNCTION: PR_FindNextTraceRname() -- Retrieive an RName handle
** iterator.
** 
** DESCRIPTION:
** PR_FindNextTraceRname() retreives the first or next trace
** RName handle, depending on the value of handle, from the trace
** database. The PRTraceHandle returned can be used as an
** iterator to traverse the RName handles in the Trace database.
** 
** INPUTS:
**  rhandle: When NULL, PR_FindNextRname() returns the first
** RName handle. When a handle is a valid PRTraceHandle
** previously retreived using PR_FindNextRname() the next RName
** handle is retreived.
**  qhandle: A valid PRTraceHandle retruned from a previous call
** to PR_FIND_NEXT_TRACE_QNAME().
** 
** OUTPUTS: returned.
** 
** RETURNS: 
**  PRTraceHandle or NULL when there are no trace handles.
** 
** RESTRICTIONS:
**  Iterating thru the trace handles via FindNext should be done
** under protection of the trace handle lock. See: (
** PR_SetTraceOption( PRLockTraceHandles ).
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_FIND_NEXT_TRACE_RNAME(next,rhandle,qhandle)\
    (next) = PR_FindNextTraceRname((rhandle),(qhandle))
#else
#define PR_FIND_NEXT_TRACE_RNAME(next,rhandle,qhandle)
#endif

NSPR_API(PRTraceHandle) 
	PR_FindNextTraceRname( 
        PRTraceHandle rhandle,
        PRTraceHandle qhandle
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_RecordTraceEntries() -- Write trace entries to external media
** 
** DESCRIPTION:
** PR_RecordTraceEntries() causes entries in the in-memory trace
** buffer to be written to external media.
**
** When PR_RecordTraceEntries() is called from an application
** thread, the function appears to block until another thread
** calls PR_SetTraceOption() with the PRTraceStopRecording
** option. This suggests that PR_RecordTraceEntries() should be
** called from a user supplied thread whose only job is to
** record trace entries. 
** 
** The environment variable NSPR_TRACE_LOG controls the operation
** of this function. When NSPR_TRACE_LOG is not defined in the
** environment, no recording of trace entries occurs. When
** NSPR_TRACE_LOG is defined, the value of its definition must be
** the filename of the file to receive the trace entry buffer.
**
** PR_RecordTraceEntries() attempts to record the in-memory
** buffer to a file, subject to the setting of the environment
** variable NSPR_TRACE_LOG. It is possible because of system
** load, the thread priority of the recording thread, number of
** active trace records being written over time, and other
** variables that some trace records can be lost. ... In other
** words: don't bet the farm on getting everything.
** 
** INPUTS: none
** 
** OUTPUTS: none
** 
** RETURNS: PR_STATUS
**    PR_SUCCESS no errors were found.
**    PR_FAILURE errors were found.
** 
** RESTRICTIONS:
** Only one thread can call PR_RecordTraceEntries() within a
** process.
** 
** On error, PR_RecordTraceEntries() may return prematurely.
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_RECORD_TRACE_ENTRIES()\
	PR_RecordTraceEntries()
#else
#define PR_RECORD_TRACE_ENTRIES()
#endif
    
NSPR_API(void)
	PR_RecordTraceEntries(
        void 
);

/* -----------------------------------------------------------------------
** FUNCTION: PR_GetTraceEntries() -- Retreive trace entries from
** the Trace Facility
** 
** DESCRIPTION:
** PR_GetTraceEntries() retreives trace entries from the Trace
** Facility. Up to count trace entries are copied from the Trace
** Facility into buffer. Only those trace entries that have not
** been copied via a previous call to PR_GetTraceEntries() are
** copied. The actual number copied is placed in the PRInt32
** variable pointed to by found.
**
** If more than count trace entries have entered the Trace
** Facility since the last call to PR_GetTraceEntries() 
** a lost data condition is returned. In this case, the most
** recent count trace entries are copied into buffer and found is
** set to count.
** 
** INPUTS:
**  count. The number of trace entries to be copied into buffer.
** 
** 
** OUTPUTS:
**  buffer. An array of PRTraceEntries. The buffer is supplied
** by the caller.
** 
** found: 32bit signed integer. The number of PRTraceEntries
** actually copied. found is always less than or equal to count.
** 
** RETURNS: 
**  zero when there is no lost data.
**  non-zero when some PRTraceEntries have been lost.
** 
** RESTRICTIONS:
** This is a real performance pig. The copy out operation is bad
** enough, but depending on then frequency of calls to the
** function, serious performance impact to the operating
** application may be realized. ... YMMV.
** 
*/
#if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
#define PR_GET_TRACE_ENTRIES(buffer,count,found)\
        PR_GetTraceEntries((buffer),(count),(found))
#else
#define PR_GET_TRACE_ENTRIES(buffer,count,found)
#endif

NSPR_API(PRIntn)
    PR_GetTraceEntries(
        PRTraceEntry    *buffer,    /* where to write output */
        PRInt32         count,      /* number to get */
        PRInt32         *found      /* number you got */
);

PR_END_EXTERN_C

#endif /* prtrace_h___ */