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
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "primpl.h"
#include <ctype.h>
#include <string.h>
#ifdef VBOX_USE_IPRT_IN_NSPR
# include <iprt/initterm.h>
#endif
PRLogModuleInfo *_pr_clock_lm;
PRLogModuleInfo *_pr_cmon_lm;
PRLogModuleInfo *_pr_io_lm;
PRLogModuleInfo *_pr_cvar_lm;
PRLogModuleInfo *_pr_mon_lm;
PRLogModuleInfo *_pr_linker_lm;
PRLogModuleInfo *_pr_sched_lm;
PRLogModuleInfo *_pr_thread_lm;
PRLogModuleInfo *_pr_gc_lm;
PRLogModuleInfo *_pr_shm_lm;
PRLogModuleInfo *_pr_shma_lm;
PRFileDesc *_pr_stdin;
PRFileDesc *_pr_stdout;
PRFileDesc *_pr_stderr;
#if !defined(_PR_PTHREADS) && !defined(_PR_BTHREADS)
PRCList _pr_active_local_threadQ =
PR_INIT_STATIC_CLIST(&_pr_active_local_threadQ);
PRCList _pr_active_global_threadQ =
PR_INIT_STATIC_CLIST(&_pr_active_global_threadQ);
_MDLock _pr_cpuLock; /* lock for the CPU Q */
PRCList _pr_cpuQ = PR_INIT_STATIC_CLIST(&_pr_cpuQ);
PRUint32 _pr_utid;
PRInt32 _pr_userActive;
PRInt32 _pr_systemActive;
PRUintn _pr_maxPTDs;
#ifdef _PR_LOCAL_THREADS_ONLY
struct _PRCPU *_pr_currentCPU;
PRThread *_pr_currentThread;
PRThread *_pr_lastThread;
PRInt32 _pr_intsOff;
#endif /* _PR_LOCAL_THREADS_ONLY */
/* Lock protecting all "termination" condition variables of all threads */
PRLock *_pr_terminationCVLock;
#endif /* !defined(_PR_PTHREADS) */
PRLock *_pr_sleeplock; /* used in PR_Sleep(), classic and pthreads */
static void _PR_InitCallOnce(void);
PRBool _pr_initialized = PR_FALSE;
PR_IMPLEMENT(PRBool) PR_VersionCheck(const char *importedVersion)
{
/*
** This is the secret handshake algorithm.
**
** This release has a simple version compatibility
** check algorithm. This release is not backward
** compatible with previous major releases. It is
** not compatible with future major, minor, or
** patch releases.
*/
int vmajor = 0, vminor = 0, vpatch = 0;
const char *ptr = importedVersion;
while (isdigit(*ptr)) {
vmajor = 10 * vmajor + *ptr - '0';
ptr++;
}
if (*ptr == '.') {
ptr++;
while (isdigit(*ptr)) {
vminor = 10 * vminor + *ptr - '0';
ptr++;
}
if (*ptr == '.') {
ptr++;
while (isdigit(*ptr)) {
vpatch = 10 * vpatch + *ptr - '0';
ptr++;
}
}
}
if (vmajor != PR_VMAJOR) {
return PR_FALSE;
}
if (vmajor == PR_VMAJOR && vminor > PR_VMINOR) {
return PR_FALSE;
}
if (vmajor == PR_VMAJOR && vminor == PR_VMINOR && vpatch > PR_VPATCH) {
return PR_FALSE;
}
return PR_TRUE;
} /* PR_VersionCheck */
PR_IMPLEMENT(PRBool) PR_Initialized(void)
{
return _pr_initialized;
}
PRInt32 _native_threads_only = 0;
#ifdef WINNT
static void _pr_SetNativeThreadsOnlyMode(void)
{
HMODULE mainExe;
PRBool *globalp;
char *envp;
mainExe = GetModuleHandle(NULL);
PR_ASSERT(NULL != mainExe);
globalp = (PRBool *) GetProcAddress(mainExe, "nspr_native_threads_only");
if (globalp) {
_native_threads_only = (*globalp != PR_FALSE);
} else if (envp = getenv("NSPR_NATIVE_THREADS_ONLY")) {
_native_threads_only = (atoi(envp) == 1);
}
}
#endif
#if !defined(_PR_INET6) || defined(_PR_INET6_PROBE)
extern PRStatus _pr_init_ipv6(void);
#endif
static void _PR_InitStuff(void)
{
if (_pr_initialized) return;
_pr_initialized = PR_TRUE;
#ifdef VBOX_USE_IPRT_IN_NSPR
RTR3InitDll(RTR3INIT_FLAGS_UNOBTRUSIVE);
#endif
#ifdef _PR_ZONE_ALLOCATOR
_PR_InitZones();
#endif
#ifdef WINNT
_pr_SetNativeThreadsOnlyMode();
#endif
(void) PR_GetPageSize();
_pr_clock_lm = PR_NewLogModule("clock");
_pr_cmon_lm = PR_NewLogModule("cmon");
_pr_io_lm = PR_NewLogModule("io");
_pr_mon_lm = PR_NewLogModule("mon");
_pr_linker_lm = PR_NewLogModule("linker");
_pr_cvar_lm = PR_NewLogModule("cvar");
_pr_sched_lm = PR_NewLogModule("sched");
_pr_thread_lm = PR_NewLogModule("thread");
_pr_gc_lm = PR_NewLogModule("gc");
_pr_shm_lm = PR_NewLogModule("shm");
_pr_shma_lm = PR_NewLogModule("shma");
/* NOTE: These init's cannot depend on _PR_MD_CURRENT_THREAD() */
_PR_MD_EARLY_INIT();
_PR_InitLocks();
_PR_InitAtomic();
_PR_InitSegs();
_PR_InitStacks();
_PR_InitTPD();
_PR_InitEnv();
_PR_InitLayerCache();
_PR_InitClock();
_pr_sleeplock = PR_NewLock();
PR_ASSERT(NULL != _pr_sleeplock);
#ifdef GC_LEAK_DETECTOR
_PR_InitGarbageCollector();
#endif
_PR_InitThreads(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
#ifdef WIN16
{
PRInt32 top; /* artificial top of stack, win16 */
_pr_top_of_task_stack = (char *) ⊤
}
#endif
#ifndef _PR_GLOBAL_THREADS_ONLY
_PR_InitCPUs();
#endif
/*
* XXX: call _PR_InitMem only on those platforms for which nspr implements
* malloc, for now.
*/
#ifdef _PR_OVERRIDE_MALLOC
_PR_InitMem();
#endif
_PR_InitCMon();
_PR_InitIO();
_PR_InitNet();
_PR_InitLog();
_PR_InitLinker();
_PR_InitCallOnce();
_PR_InitDtoa();
_PR_InitMW();
_PR_InitRWLocks();
nspr_InitializePRErrorTable();
#if !defined(_PR_INET6) || defined(_PR_INET6_PROBE)
_pr_init_ipv6();
#endif
_PR_MD_FINAL_INIT();
}
void _PR_ImplicitInitialization(void)
{
_PR_InitStuff();
/* Enable interrupts */
#if !defined(_PR_PTHREADS) && !defined(_PR_GLOBAL_THREADS_ONLY)
_PR_MD_START_INTERRUPTS();
#endif
}
PR_IMPLEMENT(void) PR_DisableClockInterrupts(void)
{
#if !defined(_PR_PTHREADS) && !defined(_PR_BTHREADS)
if (!_pr_initialized) {
_PR_InitStuff();
} else {
_PR_MD_DISABLE_CLOCK_INTERRUPTS();
}
#endif
}
PR_IMPLEMENT(void) PR_EnableClockInterrupts(void)
{
#if !defined(_PR_PTHREADS) && !defined(_PR_BTHREADS)
if (!_pr_initialized) {
_PR_InitStuff();
}
_PR_MD_ENABLE_CLOCK_INTERRUPTS();
#endif
}
PR_IMPLEMENT(void) PR_BlockClockInterrupts(void)
{
#if !defined(_PR_PTHREADS) && !defined(_PR_BTHREADS)
_PR_MD_BLOCK_CLOCK_INTERRUPTS();
#endif
}
PR_IMPLEMENT(void) PR_UnblockClockInterrupts(void)
{
#if !defined(_PR_PTHREADS) && !defined(_PR_BTHREADS)
_PR_MD_UNBLOCK_CLOCK_INTERRUPTS();
#endif
}
PR_IMPLEMENT(void) PR_Init(
PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs)
{
#if defined(XP_MAC)
#pragma unused (type, priority, maxPTDs)
#endif
_PR_ImplicitInitialization();
}
PR_IMPLEMENT(PRIntn) PR_Initialize(
PRPrimordialFn prmain, PRIntn argc, char **argv, PRUintn maxPTDs)
{
#if defined(XP_MAC)
#pragma unused (maxPTDs)
#endif
PRIntn rv;
_PR_ImplicitInitialization();
rv = prmain(argc, argv);
PR_Cleanup();
return rv;
} /* PR_Initialize */
/*
*-----------------------------------------------------------------------
*
* _PR_CleanupBeforeExit --
*
* Perform the cleanup work before exiting the process.
* We first do the cleanup generic to all platforms. Then
* we call _PR_MD_CLEANUP_BEFORE_EXIT(), where platform-dependent
* cleanup is done. This function is used by PR_Cleanup().
*
* See also: PR_Cleanup().
*
*-----------------------------------------------------------------------
*/
#if defined(_PR_PTHREADS) || defined(_PR_BTHREADS)
/* see ptthread.c */
#else
static void
_PR_CleanupBeforeExit(void)
{
/*
Do not make any calls here other than to destroy resources. For example,
do not make any calls that eventually may end up in PR_Lock. Because the
thread is destroyed, can not access current thread any more.
*/
_PR_CleanupTPD();
if (_pr_terminationCVLock)
/*
* In light of the comment above, this looks real suspicious.
* I'd go so far as to say it's just a problem waiting to happen.
*/
PR_DestroyLock(_pr_terminationCVLock);
_PR_MD_CLEANUP_BEFORE_EXIT();
}
#endif /* defined(_PR_PTHREADS) */
/*
*----------------------------------------------------------------------
*
* PR_Cleanup --
*
* Perform a graceful shutdown of the NSPR runtime. PR_Cleanup() may
* only be called from the primordial thread, typically at the
* end of the main() function. It returns when it has completed
* its platform-dependent duty and the process must not make any other
* NSPR library calls prior to exiting from main().
*
* PR_Cleanup() first blocks the primordial thread until all the
* other user (non-system) threads, if any, have terminated.
* Then it performs cleanup in preparation for exiting the process.
* PR_Cleanup() does not exit the primordial thread (which would
* in turn exit the process).
*
* PR_Cleanup() only responds when it is called by the primordial
* thread. Calls by any other thread are silently ignored.
*
* See also: PR_ExitProcess()
*
*----------------------------------------------------------------------
*/
#if defined(_PR_PTHREADS) || defined(_PR_BTHREADS)
/* see ptthread.c */
#else
PR_IMPLEMENT(PRStatus) PR_Cleanup()
{
PRThread *me = PR_GetCurrentThread();
PR_ASSERT((NULL != me) && (me->flags & _PR_PRIMORDIAL));
if ((NULL != me) && (me->flags & _PR_PRIMORDIAL))
{
PR_LOG(_pr_thread_lm, PR_LOG_MIN, ("PR_Cleanup: shutting down NSPR"));
/*
* No more recycling of threads
*/
_pr_recycleThreads = 0;
/*
* Wait for all other user (non-system/daemon) threads
* to terminate.
*/
PR_Lock(_pr_activeLock);
while (_pr_userActive > _pr_primordialExitCount) {
PR_WaitCondVar(_pr_primordialExitCVar, PR_INTERVAL_NO_TIMEOUT);
}
PR_Unlock(_pr_activeLock);
#ifdef IRIX
_PR_MD_PRE_CLEANUP(me);
/*
* The primordial thread must now be running on the primordial cpu
*/
PR_ASSERT((_PR_IS_NATIVE_THREAD(me)) || (me->cpu->id == 0));
#endif
_PR_CleanupMW();
_PR_CleanupDtoa();
_PR_CleanupCallOnce();
_PR_ShutdownLinker();
/* Release the primordial thread's private data, etc. */
_PR_CleanupThread(me);
_PR_MD_STOP_INTERRUPTS();
PR_LOG(_pr_thread_lm, PR_LOG_MIN,
("PR_Cleanup: clean up before destroying thread"));
_PR_LogCleanup();
/*
* This part should look like the end of _PR_NativeRunThread
* and _PR_UserRunThread.
*/
if (_PR_IS_NATIVE_THREAD(me)) {
_PR_MD_EXIT_THREAD(me);
_PR_NativeDestroyThread(me);
} else {
_PR_UserDestroyThread(me);
PR_DELETE(me->stack);
PR_DELETE(me);
}
/*
* XXX: We are freeing the heap memory here so that Purify won't
* complain, but we should also free other kinds of resources
* that are allocated by the _PR_InitXXX() functions.
* Ideally, for each _PR_InitXXX(), there should be a corresponding
* _PR_XXXCleanup() that we can call here.
*/
_PR_CleanupNet();
_PR_CleanupIO();
#ifdef WINNT
_PR_CleanupCPUs();
#endif
_PR_CleanupThreads();
PR_DestroyLock(_pr_sleeplock);
_pr_sleeplock = NULL;
_PR_CleanupLayerCache();
_PR_CleanupEnv();
_PR_CleanupStacks();
_PR_CleanupBeforeExit();
_pr_initialized = PR_FALSE;
return PR_SUCCESS;
}
return PR_FAILURE;
}
#endif /* defined(_PR_PTHREADS) */
/*
*------------------------------------------------------------------------
* PR_ProcessExit --
*
* Cause an immediate, nongraceful, forced termination of the process.
* It takes a PRIntn argument, which is the exit status code of the
* process.
*
* See also: PR_Cleanup()
*
*------------------------------------------------------------------------
*/
#if defined(_PR_PTHREADS) || defined(_PR_BTHREADS)
/* see ptthread.c */
#else
PR_IMPLEMENT(void) PR_ProcessExit(PRIntn status)
{
_PR_MD_EXIT(status);
}
#endif /* defined(_PR_PTHREADS) */
PR_IMPLEMENT(PRProcessAttr *)
PR_NewProcessAttr(void)
{
PRProcessAttr *attr;
attr = PR_NEWZAP(PRProcessAttr);
if (!attr) {
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
}
return attr;
}
PR_IMPLEMENT(void)
PR_ResetProcessAttr(PRProcessAttr *attr)
{
PR_FREEIF(attr->currentDirectory);
PR_FREEIF(attr->fdInheritBuffer);
memset(attr, 0, sizeof(*attr));
}
PR_IMPLEMENT(void)
PR_DestroyProcessAttr(PRProcessAttr *attr)
{
PR_FREEIF(attr->currentDirectory);
PR_FREEIF(attr->fdInheritBuffer);
PR_DELETE(attr);
}
PR_IMPLEMENT(void)
PR_ProcessAttrSetStdioRedirect(
PRProcessAttr *attr,
PRSpecialFD stdioFd,
PRFileDesc *redirectFd)
{
switch (stdioFd) {
case PR_StandardInput:
attr->stdinFd = redirectFd;
break;
case PR_StandardOutput:
attr->stdoutFd = redirectFd;
break;
case PR_StandardError:
attr->stderrFd = redirectFd;
break;
default:
PR_ASSERT(0);
}
}
/*
* OBSOLETE
*/
PR_IMPLEMENT(void)
PR_SetStdioRedirect(
PRProcessAttr *attr,
PRSpecialFD stdioFd,
PRFileDesc *redirectFd)
{
#if defined(DEBUG)
static PRBool warn = PR_TRUE;
if (warn) {
warn = _PR_Obsolete("PR_SetStdioRedirect()",
"PR_ProcessAttrSetStdioRedirect()");
}
#endif
PR_ProcessAttrSetStdioRedirect(attr, stdioFd, redirectFd);
}
PR_IMPLEMENT(PRStatus)
PR_ProcessAttrSetCurrentDirectory(
PRProcessAttr *attr,
const char *dir)
{
PR_FREEIF(attr->currentDirectory);
attr->currentDirectory = (char *) PR_MALLOC(strlen(dir) + 1);
if (!attr->currentDirectory) {
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return PR_FAILURE;
}
strcpy(attr->currentDirectory, dir);
return PR_SUCCESS;
}
PR_IMPLEMENT(PRStatus)
PR_ProcessAttrSetInheritableFD(
PRProcessAttr *attr,
PRFileDesc *fd,
const char *name)
{
/* We malloc the fd inherit buffer in multiples of this number. */
#define FD_INHERIT_BUFFER_INCR 128
/* The length of "NSPR_INHERIT_FDS=" */
#define NSPR_INHERIT_FDS_STRLEN 17
/* The length of osfd (PRInt32) printed in hexadecimal with 0x prefix */
#define OSFD_STRLEN 10
/* The length of fd type (PRDescType) printed in decimal */
#define FD_TYPE_STRLEN 1
PRSize newSize;
int remainder;
char *newBuffer;
int nwritten;
char *cur;
int freeSize;
if (fd->identity != PR_NSPR_IO_LAYER) {
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
if (fd->secret->inheritable == _PR_TRI_UNKNOWN) {
_PR_MD_QUERY_FD_INHERITABLE(fd);
}
if (fd->secret->inheritable != _PR_TRI_TRUE) {
PR_SetError(PR_NO_ACCESS_RIGHTS_ERROR, 0);
return PR_FAILURE;
}
/*
* We also need to account for the : separators and the
* terminating null byte.
*/
if (NULL == attr->fdInheritBuffer) {
/* The first time, we print "NSPR_INHERIT_FDS=<name>:<type>:<val>" */
newSize = NSPR_INHERIT_FDS_STRLEN + strlen(name)
+ FD_TYPE_STRLEN + OSFD_STRLEN + 2 + 1;
} else {
/* At other times, we print ":<name>:<type>:<val>" */
newSize = attr->fdInheritBufferUsed + strlen(name)
+ FD_TYPE_STRLEN + OSFD_STRLEN + 3 + 1;
}
if (newSize > attr->fdInheritBufferSize) {
/* Make newSize a multiple of FD_INHERIT_BUFFER_INCR */
remainder = newSize % FD_INHERIT_BUFFER_INCR;
if (remainder != 0) {
newSize += (FD_INHERIT_BUFFER_INCR - remainder);
}
if (NULL == attr->fdInheritBuffer) {
newBuffer = (char *) PR_MALLOC(newSize);
} else {
newBuffer = (char *) PR_REALLOC(attr->fdInheritBuffer, newSize);
}
if (NULL == newBuffer) {
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
return PR_FAILURE;
}
attr->fdInheritBuffer = newBuffer;
attr->fdInheritBufferSize = newSize;
}
cur = attr->fdInheritBuffer + attr->fdInheritBufferUsed;
freeSize = attr->fdInheritBufferSize - attr->fdInheritBufferUsed;
if (0 == attr->fdInheritBufferUsed) {
nwritten = PR_snprintf(cur, freeSize,
"NSPR_INHERIT_FDS=%s:%d:0x%lx",
name, (PRIntn)fd->methods->file_type, fd->secret->md.osfd);
} else {
nwritten = PR_snprintf(cur, freeSize, ":%s:%d:0x%lx",
name, (PRIntn)fd->methods->file_type, fd->secret->md.osfd);
}
attr->fdInheritBufferUsed += nwritten;
return PR_SUCCESS;
}
PR_IMPLEMENT(PRFileDesc *) PR_GetInheritedFD(
const char *name)
{
PRFileDesc *fd;
const char *envVar;
const char *ptr;
int len = strlen(name);
PRInt32 osfd;
int nColons;
PRIntn fileType;
envVar = PR_GetEnv("NSPR_INHERIT_FDS");
if (NULL == envVar || '\0' == envVar[0]) {
PR_SetError(PR_UNKNOWN_ERROR, 0);
return NULL;
}
ptr = envVar;
while (1) {
if ((strncmp(ptr, name, len) == 0) && (ptr[len] == ':')) {
ptr += len + 1;
PR_sscanf(ptr, "%d:0x%lx", &fileType, &osfd);
switch ((PRDescType)fileType) {
case PR_DESC_FILE:
fd = PR_ImportFile(osfd);
break;
case PR_DESC_PIPE:
fd = PR_ImportPipe(osfd);
break;
case PR_DESC_SOCKET_TCP:
fd = PR_ImportTCPSocket(osfd);
break;
case PR_DESC_SOCKET_UDP:
fd = PR_ImportUDPSocket(osfd);
break;
default:
PR_ASSERT(0);
PR_SetError(PR_UNKNOWN_ERROR, 0);
fd = NULL;
break;
}
if (fd) {
/*
* An inherited FD is inheritable by default.
* The child process needs to call PR_SetFDInheritable
* to make it non-inheritable if so desired.
*/
fd->secret->inheritable = _PR_TRI_TRUE;
}
return fd;
}
/* Skip three colons */
nColons = 0;
while (*ptr) {
if (*ptr == ':') {
if (++nColons == 3) {
break;
}
}
ptr++;
}
if (*ptr == '\0') {
PR_SetError(PR_UNKNOWN_ERROR, 0);
return NULL;
}
ptr++;
}
}
PR_IMPLEMENT(PRProcess*) PR_CreateProcess(
const char *path,
char *const *argv,
char *const *envp,
const PRProcessAttr *attr)
{
return _PR_MD_CREATE_PROCESS(path, argv, envp, attr);
} /* PR_CreateProcess */
PR_IMPLEMENT(PRStatus) PR_CreateProcessDetached(
const char *path,
char *const *argv,
char *const *envp,
const PRProcessAttr *attr)
{
#ifndef _PR_MD_CREATE_PROCESS_DETACHED
PRProcess *process;
PRStatus rv;
s
#ifdef XP_OS2
process = _PR_CreateOS2ProcessEx(path, argv, envp, attr, PR_TRUE);
#else
process = PR_CreateProcess(path, argv, envp, attr);
#endif
if (NULL == process) {
return PR_FAILURE;
}
rv = PR_DetachProcess(process);
PR_ASSERT(PR_SUCCESS == rv);
if (rv == PR_FAILURE) {
PR_DELETE(process);
return PR_FAILURE;
}
return PR_SUCCESS;
#else /* _PR_MD_CREATE_PROCESS_DETACHED */
return _PR_MD_CREATE_PROCESS_DETACHED(path, argv, envp, attr);
#endif /* _PR_MD_CREATE_PROCESS_DETACHED */
}
PR_IMPLEMENT(PRStatus) PR_DetachProcess(PRProcess *process)
{
return _PR_MD_DETACH_PROCESS(process);
}
PR_IMPLEMENT(PRStatus) PR_WaitProcess(PRProcess *process, PRInt32 *exitCode)
{
return _PR_MD_WAIT_PROCESS(process, exitCode);
} /* PR_WaitProcess */
PR_IMPLEMENT(PRStatus) PR_KillProcess(PRProcess *process)
{
return _PR_MD_KILL_PROCESS(process);
}
/*
********************************************************************
*
* Module initialization
*
********************************************************************
*/
static struct {
PRLock *ml;
PRCondVar *cv;
} mod_init;
static void _PR_InitCallOnce(void) {
mod_init.ml = PR_NewLock();
PR_ASSERT(NULL != mod_init.ml);
mod_init.cv = PR_NewCondVar(mod_init.ml);
PR_ASSERT(NULL != mod_init.cv);
}
void _PR_CleanupCallOnce()
{
PR_DestroyLock(mod_init.ml);
mod_init.ml = NULL;
PR_DestroyCondVar(mod_init.cv);
mod_init.cv = NULL;
}
PR_IMPLEMENT(PRStatus) PR_CallOnce(
PRCallOnceType *once,
PRCallOnceFN func)
{
if (!_pr_initialized) _PR_ImplicitInitialization();
if (!once->initialized) {
if (PR_AtomicSet(&once->inProgress, 1) == 0) {
once->status = (*func)();
PR_Lock(mod_init.ml);
once->initialized = 1;
PR_NotifyAllCondVar(mod_init.cv);
PR_Unlock(mod_init.ml);
} else {
PR_Lock(mod_init.ml);
while (!once->initialized) {
PR_WaitCondVar(mod_init.cv, PR_INTERVAL_NO_TIMEOUT);
}
PR_Unlock(mod_init.ml);
}
}
return once->status;
}
PR_IMPLEMENT(PRStatus) PR_CallOnceWithArg(
PRCallOnceType *once,
PRCallOnceWithArgFN func,
void *arg)
{
if (!_pr_initialized) _PR_ImplicitInitialization();
if (!once->initialized) {
if (PR_AtomicSet(&once->inProgress, 1) == 0) {
once->status = (*func)(arg);
PR_Lock(mod_init.ml);
once->initialized = 1;
PR_NotifyAllCondVar(mod_init.cv);
PR_Unlock(mod_init.ml);
} else {
PR_Lock(mod_init.ml);
while (!once->initialized) {
PR_WaitCondVar(mod_init.cv, PR_INTERVAL_NO_TIMEOUT);
}
PR_Unlock(mod_init.ml);
}
}
return once->status;
}
PRBool _PR_Obsolete(const char *obsolete, const char *preferred)
{
#if defined(DEBUG)
#ifndef XP_MAC
PR_fprintf(
PR_STDERR, "'%s' is obsolete. Use '%s' instead.\n",
obsolete, (NULL == preferred) ? "something else" : preferred);
#else
#pragma unused (obsolete, preferred)
#endif
#endif
return PR_FALSE;
} /* _PR_Obsolete */
/* prinit.c */
|