source: trunk/src/kmk/kmkbuiltin/kSubmit.c@ 3011

Last change on this file since 3011 was 2959, checked in by bird, 9 years ago

kSubmit/kWorker: Added --no-pch-caching parameter to work around trouble with precompiled header file creation. Enabled pch caching in the 64-bit version of kWorker, not virtual memory problems there.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 47.7 KB
Line 
1/* $Id: kSubmit.c 2959 2016-09-21 20:53:32Z bird $ */
2/** @file
3 * kMk Builtin command - submit job to a kWorker.
4 */
5
6/*
7 * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
8 *
9 * This file is part of kBuild.
10 *
11 * kBuild is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * kBuild is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with kBuild. If not, see <http://www.gnu.org/licenses/>
23 *
24 */
25
26/*******************************************************************************
27* Header Files *
28*******************************************************************************/
29#ifdef __APPLE__
30# define _POSIX_C_SOURCE 1 /* 10.4 sdk and unsetenv */
31#endif
32#include "make.h"
33#include "job.h"
34#include "variable.h"
35#include "pathstuff.h"
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <errno.h>
40#include <assert.h>
41#ifdef HAVE_ALLOCA_H
42# include <alloca.h>
43#endif
44#if defined(_MSC_VER)
45# include <ctype.h>
46# include <io.h>
47# include <direct.h>
48# include <process.h>
49#else
50# include <unistd.h>
51#endif
52#ifdef KBUILD_OS_WINDOWS
53# include "sub_proc.h"
54#endif
55
56#include "kbuild.h"
57#include "kmkbuiltin.h"
58#include "err.h"
59
60
61/*********************************************************************************************************************************
62* Defined Constants And Macros *
63*********************************************************************************************************************************/
64/** Hashes a pid. */
65#define KWORKER_PID_HASH(a_pid) ((size_t)(a_pid) % 61)
66
67
68/*********************************************************************************************************************************
69* Structures and Typedefs *
70*********************************************************************************************************************************/
71typedef struct WORKERINSTANCE *PWORKERINSTANCE;
72typedef struct WORKERINSTANCE
73{
74 /** Pointer to the next worker instance. */
75 PWORKERINSTANCE pNext;
76 /** Pointer to the previous worker instance. */
77 PWORKERINSTANCE pPrev;
78 /** Pointer to the next worker with the same pid hash slot. */
79 PWORKERINSTANCE pNextPidHash;
80 /** 32 or 64. */
81 unsigned cBits;
82 /** The process ID of the kWorker process. */
83 pid_t pid;
84 union
85 {
86 struct
87 {
88 /** The exit code. */
89 int32_t rcExit;
90 /** Set to 1 if the worker is exiting. */
91 uint8_t bWorkerExiting;
92 uint8_t abUnused[3];
93 } s;
94 uint8_t ab[8];
95 } Result;
96 /** Number of result bytes read alread. */
97 size_t cbResultRead;
98
99#ifdef KBUILD_OS_WINDOWS
100 /** The process handle. */
101 HANDLE hProcess;
102 /** The bi-directional pipe we use to talk to the kWorker process. */
103 HANDLE hPipe;
104 /** For overlapped read (have valid event semaphore). */
105 OVERLAPPED OverlappedRead;
106#else
107 /** The socket descriptor we use to talk to the kWorker process. */
108 int fdSocket;
109#endif
110
111 /** What it's busy with. NULL if idle. */
112 struct child *pBusyWith;
113} WORKERINSTANCE;
114
115
116typedef struct WORKERLIST
117{
118 /** The head of the list. NULL if empty. */
119 PWORKERINSTANCE pHead;
120 /** The tail of the list. NULL if empty. */
121 PWORKERINSTANCE pTail;
122 /** Number of list entries. */
123 size_t cEntries;
124} WORKERLIST;
125typedef WORKERLIST *PWORKERLIST;
126
127
128/*********************************************************************************************************************************
129* Global Variables *
130*********************************************************************************************************************************/
131/** List of idle worker.*/
132static WORKERLIST g_IdleList;
133/** List of busy workers. */
134static WORKERLIST g_BusyList;
135/** PID hash table for the workers.
136 * @sa KWORKER_PID_HASH() */
137static PWORKERINSTANCE g_apPidHash[61];
138
139#ifdef KBUILD_OS_WINDOWS
140/** For naming the pipes.
141 * Also indicates how many worker instances we've spawned. */
142static unsigned g_uWorkerSeqNo = 0;
143#endif
144/** Set if we've registred the atexit handler already. */
145static int g_fAtExitRegistered = 0;
146
147/** @var g_cArchBits
148 * The bit count of the architecture this binary is compiled for. */
149/** @var g_szArch
150 * The name of the architecture this binary is compiled for. */
151/** @var g_cArchBits
152 * The bit count of the alternative architecture. */
153/** @var g_szAltArch
154 * The name of the alternative architecture. */
155#if defined(KBUILD_ARCH_AMD64)
156static unsigned g_cArchBits = 64;
157static char const g_szArch[] = "amd64";
158static unsigned g_cAltArchBits = 32;
159static char const g_szAltArch[] = "x86";
160#elif defined(KBUILD_ARCH_X86)
161static unsigned g_cArchBits = 32;
162static char const g_szArch[] = "x86";
163static unsigned g_cAltArchBits = 64;
164static char const g_szAltArch[] = "amd64";
165#else
166# error "Port me!"
167#endif
168
169
170
171/**
172 * Unlinks a worker instance from a list.
173 *
174 * @param pList The list.
175 * @param pWorker The worker.
176 */
177static void kSubmitListUnlink(PWORKERLIST pList, PWORKERINSTANCE pWorker)
178{
179 PWORKERINSTANCE pNext = pWorker->pNext;
180 PWORKERINSTANCE pPrev = pWorker->pPrev;
181
182 if (pNext)
183 {
184 assert(pNext->pPrev == pWorker);
185 pNext->pPrev = pPrev;
186 }
187 else
188 {
189 assert(pList->pTail == pWorker);
190 pList->pTail = pPrev;
191 }
192
193 if (pPrev)
194 {
195 assert(pPrev->pNext == pWorker);
196 pPrev->pNext = pNext;
197 }
198 else
199 {
200 assert(pList->pHead == pWorker);
201 pList->pHead = pNext;
202 }
203
204 assert(!pList->pHead || pList->pHead->pPrev == NULL);
205 assert(!pList->pTail || pList->pTail->pNext == NULL);
206
207 assert(pList->cEntries > 0);
208 pList->cEntries--;
209
210 pWorker->pNext = NULL;
211 pWorker->pPrev = NULL;
212}
213
214
215/**
216 * Appends a worker instance to the tail of a list.
217 *
218 * @param pList The list.
219 * @param pWorker The worker.
220 */
221static void kSubmitListAppend(PWORKERLIST pList, PWORKERINSTANCE pWorker)
222{
223 PWORKERINSTANCE pTail = pList->pTail;
224
225 assert(pTail != pWorker);
226 assert(pList->pHead != pWorker);
227
228 pWorker->pNext = NULL;
229 pWorker->pPrev = pTail;
230 if (pTail != NULL)
231 {
232 assert(pTail->pNext == NULL);
233 pTail->pNext = pWorker;
234 }
235 else
236 {
237 assert(pList->pHead == NULL);
238 pList->pHead = pWorker;
239 }
240 pList->pTail = pWorker;
241
242 assert(pList->pHead->pPrev == NULL);
243 assert(pList->pTail->pNext == NULL);
244
245 pList->cEntries++;
246}
247
248
249/**
250 * Remove worker from the process ID hash table.
251 *
252 * @param pWorker The worker.
253 */
254static void kSubmitPidHashRemove(PWORKERINSTANCE pWorker)
255{
256 size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
257 if (g_apPidHash[idxHash] == pWorker)
258 g_apPidHash[idxHash] = pWorker->pNext;
259 else
260 {
261 PWORKERINSTANCE pPrev = g_apPidHash[idxHash];
262 while (pPrev && pPrev->pNext != pWorker)
263 pPrev = pPrev->pNext;
264 assert(pPrev != NULL);
265 if (pPrev)
266 pPrev->pNext = pWorker->pNext;
267 }
268 pWorker->pid = -1;
269}
270
271
272/**
273 * Looks up a worker by its process ID.
274 *
275 * @returns Pointer to the worker instance if found. NULL if not.
276 * @param pid The process ID of the worker.
277 */
278static PWORKERINSTANCE kSubmitFindWorkerByPid(pid_t pid)
279{
280 PWORKERINSTANCE pWorker = g_apPidHash[KWORKER_PID_HASH(pid)];
281 while (pWorker && pWorker->pid != pid)
282 pWorker = pWorker->pNextPidHash;
283 return pWorker;
284}
285
286
287/**
288 * Creates a new worker process.
289 *
290 * @returns 0 on success, non-zero value on failure.
291 * @param pWorker The worker structure. Caller does the linking
292 * (as we might be reusing an existing worker
293 * instance because a worker shut itself down due
294 * to high resource leak level).
295 * @param cVerbosity The verbosity level.
296 */
297static int kSubmitSpawnWorker(PWORKERINSTANCE pWorker, int cVerbosity)
298{
299#if defined(KBUILD_OS_WINDOWS) || defined(KBUILD_OS_OS2)
300 static const char s_szWorkerName[] = "kWorker.exe";
301#else
302 static const char s_szWorkerName[] = "kWorker";
303#endif
304 const char *pszBinPath = get_kbuild_bin_path();
305 size_t const cchBinPath = strlen(pszBinPath);
306 size_t cchExectuable;
307 size_t const cbExecutableBuf = GET_PATH_MAX;
308 PATH_VAR(szExecutable);
309#define TUPLE(a_sz) a_sz, sizeof(a_sz) - 1
310 struct variable *pVarVolatile = lookup_variable(TUPLE("PATH_OUT"));
311 if (pVarVolatile)
312 { /* likely */ }
313 else
314 {
315 pVarVolatile = lookup_variable(TUPLE("PATH_OUT_BASE"));
316 if (!pVarVolatile)
317 warn("Neither PATH_OUT_BASE nor PATH_OUT was found.");
318 }
319
320 /*
321 * Construct the executable path.
322 */
323 if ( pWorker->cBits == g_cArchBits
324 ? cchBinPath + 1 + sizeof(s_szWorkerName) <= cbExecutableBuf
325 : cchBinPath + 1 - sizeof(g_szArch) + sizeof(g_szAltArch) + sizeof(s_szWorkerName) <= cbExecutableBuf )
326 {
327#ifdef KBUILD_OS_WINDOWS
328 static DWORD s_fDenyRemoteClients = ~(DWORD)0;
329 wchar_t wszPipeName[64];
330 HANDLE hWorkerPipe;
331 SECURITY_ATTRIBUTES SecAttrs = { /*nLength:*/ sizeof(SecAttrs), /*pAttrs:*/ NULL, /*bInheritHandle:*/ TRUE };
332#else
333 int aiPair[2] = { -1, -1 };
334#endif
335
336 memcpy(szExecutable, pszBinPath, cchBinPath);
337 cchExectuable = cchBinPath;
338
339 /* Replace the arch bin directory extension with the alternative one if requested. */
340 if (pWorker->cBits != g_cArchBits)
341 {
342 if ( cchBinPath < sizeof(g_szArch)
343 || memcmp(&szExecutable[cchBinPath - sizeof(g_szArch) + 1], g_szArch, sizeof(g_szArch) - 1) != 0)
344 return errx(1, "KBUILD_BIN_PATH does not end with main architecture (%s) as expected: %s", pszBinPath, g_szArch);
345 cchExectuable -= sizeof(g_szArch) - 1;
346 memcpy(&szExecutable[cchExectuable], g_szAltArch, sizeof(g_szAltArch) - 1);
347 cchExectuable += sizeof(g_szAltArch) - 1;
348 }
349
350 /* Append a slash and the worker name. */
351 szExecutable[cchExectuable++] = '/';
352 memcpy(&szExecutable[cchExectuable], s_szWorkerName, sizeof(s_szWorkerName));
353
354#ifdef KBUILD_OS_WINDOWS
355 /*
356 * Create the bi-directional pipe. Worker end is marked inheritable, our end is not.
357 */
358 if (s_fDenyRemoteClients == ~(DWORD)0)
359 s_fDenyRemoteClients = GetVersion() >= 0x60000 ? PIPE_REJECT_REMOTE_CLIENTS : 0;
360 _snwprintf(wszPipeName, sizeof(wszPipeName), L"\\\\.\\pipe\\kmk-%u-kWorker-%u", getpid(), g_uWorkerSeqNo++);
361 hWorkerPipe = CreateNamedPipeW(wszPipeName,
362 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE /* win2k sp2+ */,
363 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT | s_fDenyRemoteClients,
364 1 /* cMaxInstances */,
365 64 /*cbOutBuffer*/,
366 65536 /*cbInBuffer*/,
367 0 /*cMsDefaultTimeout -> 50ms*/,
368 &SecAttrs /* inherit */);
369 if (hWorkerPipe != INVALID_HANDLE_VALUE)
370 {
371 pWorker->hPipe = CreateFileW(wszPipeName,
372 GENERIC_READ | GENERIC_WRITE,
373 0 /* dwShareMode - no sharing */,
374 NULL /*pSecAttr - no inherit */,
375 OPEN_EXISTING,
376 FILE_FLAG_OVERLAPPED,
377 NULL /*hTemplate*/);
378 if (pWorker->hPipe != INVALID_HANDLE_VALUE)
379 {
380 pWorker->OverlappedRead.hEvent = CreateEventW(NULL /*pSecAttrs - no inherit*/, TRUE /*bManualReset*/,
381 TRUE /*bInitialState*/, NULL /*pwszName*/);
382 if (pWorker->OverlappedRead.hEvent != NULL)
383 {
384 char szHandleArg[32];
385 const char *apszArgs[6] =
386 {
387 szExecutable, "--pipe", szHandleArg,
388 pVarVolatile ? "--volatile" : NULL, pVarVolatile ? pVarVolatile->value : NULL,
389 NULL
390 };
391 _snprintf(szHandleArg, sizeof(szHandleArg), "%p", hWorkerPipe);
392
393 /*
394 * Create the worker process.
395 */
396 pWorker->hProcess = (HANDLE) _spawnve(_P_NOWAIT, szExecutable, apszArgs, environ);
397 if ((intptr_t)pWorker->hProcess != -1)
398 {
399 CloseHandle(hWorkerPipe);
400 pWorker->pid = GetProcessId(pWorker->hProcess);
401 if (cVerbosity > 0)
402 fprintf(stderr, "kSubmit: created %d bit worker %d\n", pWorker->cBits, pWorker->pid);
403 return 0;
404 }
405 err(1, "_spawnve(,%s,,)", szExecutable);
406 CloseHandle(pWorker->OverlappedRead.hEvent);
407 pWorker->OverlappedRead.hEvent = INVALID_HANDLE_VALUE;
408 }
409 else
410 errx(1, "CreateEventW failed: %u", GetLastError());
411 CloseHandle(pWorker->hPipe);
412 pWorker->hPipe = INVALID_HANDLE_VALUE;
413 }
414 else
415 errx(1, "Opening named pipe failed: %u", GetLastError());
416 CloseHandle(hWorkerPipe);
417 }
418 else
419 errx(1, "CreateNamedPipeW failed: %u", GetLastError());
420
421#else
422 /*
423 * Create a socket pair.
424 */
425 if (socketpair(AF_LOCAL, SOCK_STREAM, 0, aiPair) == 0)
426 {
427 pWorker->fdSocket = aiPair[1];
428 }
429 else
430 err(1, "socketpair");
431#endif
432 }
433 else
434 errx(1, "KBUILD_BIN_PATH is too long");
435 return -1;
436}
437
438
439/**
440 * Selects an idle worker or spawns a new one.
441 *
442 * @returns Pointer to the selected worker instance. NULL on error.
443 * @param pWorker The idle worker instance to respawn.
444 * On failure this will be freed!
445 * @param cBitsWorker The worker bitness - 64 or 32.
446 */
447static int kSubmitRespawnWorker(PWORKERINSTANCE pWorker, int cVerbosity)
448{
449 /*
450 * Clean up after the old worker.
451 */
452#ifdef KBUILD_OS_WINDOWS
453 DWORD rcWait;
454
455 /* Close the pipe handle first, breaking the pipe in case it's not already
456 busted up. Close the event semaphore too before waiting for the process. */
457 if (pWorker->hPipe != INVALID_HANDLE_VALUE)
458 {
459 if (!CloseHandle(pWorker->hPipe))
460 warnx("CloseHandle(pWorker->hPipe): %u", GetLastError());
461 pWorker->hPipe = INVALID_HANDLE_VALUE;
462 }
463
464 if (!CloseHandle(pWorker->OverlappedRead.hEvent))
465 warnx("CloseHandle(pWorker->OverlappedRead.hEvent): %u", GetLastError());
466 pWorker->OverlappedRead.hEvent = INVALID_HANDLE_VALUE;
467
468 /* It's probably shutdown already, if not give it 10 milliseconds before
469 we terminate it forcefully. */
470 rcWait = WaitForSingleObject(pWorker->hProcess, 10);
471 if (rcWait != WAIT_OBJECT_0)
472 {
473 BOOL fRc = TerminateProcess(pWorker->hProcess, 127);
474 rcWait = WaitForSingleObject(pWorker->hProcess, 100);
475 if (rcWait != WAIT_OBJECT_0)
476 warnx("WaitForSingleObject returns %u (and TerminateProcess %d)", rcWait, fRc);
477 }
478
479 if (!CloseHandle(pWorker->hProcess))
480 warnx("CloseHandle(pWorker->hProcess): %u", GetLastError());
481 pWorker->hProcess = INVALID_HANDLE_VALUE;
482
483#else
484 pid_t pidWait;
485 int rc;
486
487 if (pWorker->fdSocket != -1)
488 {
489 if (close(pWorker->fdSocket) != 0)
490 warn("close(pWorker->fdSocket)");
491 pWorker->fdSocket = -1;
492 }
493
494 kill(pWorker->pid, SIGTERM);
495 pidWait = waitpid(pWorker->pid, &rc, 0);
496 if (pidWait != pWorker->pid)
497 warn("waitpid(pWorker->pid,,0)");
498#endif
499
500 /*
501 * Unlink it from the hash table.
502 */
503 kSubmitPidHashRemove(pWorker);
504
505 /*
506 * Respawn it.
507 */
508 if (kSubmitSpawnWorker(pWorker, cVerbosity) == 0)
509 {
510 /*
511 * Insert it into the process ID hash table and idle list.
512 */
513 size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
514 pWorker->pNextPidHash = g_apPidHash[idxHash];
515 g_apPidHash[idxHash] = pWorker;
516 return 0;
517 }
518
519 kSubmitListUnlink(&g_IdleList, pWorker);
520 free(pWorker);
521 return -1;
522}
523
524
525/**
526 * Selects an idle worker or spawns a new one.
527 *
528 * @returns Pointer to the selected worker instance. NULL on error.
529 * @param cBitsWorker The worker bitness - 64 or 32.
530 */
531static PWORKERINSTANCE kSubmitSelectWorkSpawnNewIfNecessary(unsigned cBitsWorker, int cVerbosity)
532{
533 /*
534 * Lookup up an idle worker.
535 */
536 PWORKERINSTANCE pWorker = g_IdleList.pHead;
537 while (pWorker)
538 {
539 if (pWorker->cBits == cBitsWorker)
540 return pWorker;
541 pWorker = pWorker->pNext;
542 }
543
544 /*
545 * Create a new worker instance.
546 */
547 pWorker = (PWORKERINSTANCE)xcalloc(sizeof(*pWorker));
548 pWorker->cBits = cBitsWorker;
549 if (kSubmitSpawnWorker(pWorker, cVerbosity) == 0)
550 {
551 /*
552 * Insert it into the process ID hash table and idle list.
553 */
554 size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
555 pWorker->pNextPidHash = g_apPidHash[idxHash];
556 g_apPidHash[idxHash] = pWorker;
557
558 kSubmitListAppend(&g_IdleList, pWorker);
559 return pWorker;
560 }
561
562 free(pWorker);
563 return NULL;
564}
565
566
567/**
568 * Composes a JOB mesage for a worker.
569 *
570 * @returns Pointer to the message.
571 * @param pszExecutable The executable to run.
572 * @param papszArgs The argument vector.
573 * @param papszEnvVars The environment vector.
574 * @param pszCwd The current directory.
575 * @param fWatcomBrainDamage The wcc/wcc386 workaround.
576 * @param fNoPchCaching Whether to disable precompiled header caching.
577 * @param papszPostCmdArgs The post command and it's arguments.
578 * @param cPostCmdArgs Number of post command argument, including the
579 * command. Zero if no post command scheduled.
580 * @param pcbMsg Where to return the message length.
581 */
582static void *kSubmitComposeJobMessage(const char *pszExecutable, char **papszArgs, char **papszEnvVars,
583 const char *pszCwd, int fWatcomBrainDamage, int fNoPchCaching,
584 char **papszPostCmdArgs, uint32_t cPostCmdArgs, uint32_t *pcbMsg)
585{
586 size_t cbTmp;
587 uint32_t i;
588 uint32_t cbMsg;
589 uint32_t cArgs;
590 uint32_t cEnvVars;
591 uint8_t *pbMsg;
592 uint8_t *pbCursor;
593
594 /*
595 * Adjust input.
596 */
597 if (!pszExecutable)
598 pszExecutable = papszArgs[0];
599
600 /*
601 * Calculate the message length first.
602 */
603 cbMsg = sizeof(cbMsg);
604 cbMsg += sizeof("JOB");
605 cbMsg += strlen(pszExecutable) + 1;
606 cbMsg += strlen(pszCwd) + 1;
607
608 cbMsg += sizeof(cArgs);
609 for (i = 0; papszArgs[i] != NULL; i++)
610 cbMsg += 1 + strlen(papszArgs[i]) + 1;
611 cArgs = i;
612
613 cbMsg += sizeof(cArgs);
614 for (i = 0; papszEnvVars[i] != NULL; i++)
615 cbMsg += strlen(papszEnvVars[i]) + 1;
616 cEnvVars = i;
617
618 cbMsg += 1; /* fWatcomBrainDamage */
619 cbMsg += 1; /* fNoPchCaching */
620
621 cbMsg += sizeof(cPostCmdArgs);
622 for (i = 0; i < cPostCmdArgs; i++)
623 cbMsg += strlen(papszPostCmdArgs[i]) + 1;
624
625 /*
626 * Compose the message.
627 */
628 pbMsg = pbCursor = xmalloc(cbMsg);
629
630 /* header */
631 memcpy(pbCursor, &cbMsg, sizeof(cbMsg));
632 pbCursor += sizeof(cbMsg);
633 memcpy(pbCursor, "JOB", sizeof("JOB"));
634 pbCursor += sizeof("JOB");
635
636 /* executable. */
637 cbTmp = strlen(pszExecutable) + 1;
638 memcpy(pbCursor, pszExecutable, cbTmp);
639 pbCursor += cbTmp;
640
641 /* cwd */
642 cbTmp = strlen(pszCwd) + 1;
643 memcpy(pbCursor, pszCwd, cbTmp);
644 pbCursor += cbTmp;
645
646 /* argument */
647 memcpy(pbCursor, &cArgs, sizeof(cArgs));
648 pbCursor += sizeof(cArgs);
649 for (i = 0; papszArgs[i] != NULL; i++)
650 {
651 *pbCursor++ = 0; /* Argument expansion flags (MSC, EMX). */
652 cbTmp = strlen(papszArgs[i]) + 1;
653 memcpy(pbCursor, papszArgs[i], cbTmp);
654 pbCursor += cbTmp;
655 }
656 assert(i == cArgs);
657
658 /* environment */
659 memcpy(pbCursor, &cEnvVars, sizeof(cEnvVars));
660 pbCursor += sizeof(cEnvVars);
661 for (i = 0; papszEnvVars[i] != NULL; i++)
662 {
663 cbTmp = strlen(papszEnvVars[i]) + 1;
664 memcpy(pbCursor, papszEnvVars[i], cbTmp);
665 pbCursor += cbTmp;
666 }
667 assert(i == cEnvVars);
668
669 /* flags */
670 *pbCursor++ = fWatcomBrainDamage != 0;
671 *pbCursor++ = fNoPchCaching != 0;
672
673 /* post command */
674 memcpy(pbCursor, &cPostCmdArgs, sizeof(cPostCmdArgs));
675 pbCursor += sizeof(cPostCmdArgs);
676 for (i = 0; i < cPostCmdArgs; i++)
677 {
678 cbTmp = strlen(papszPostCmdArgs[i]) + 1;
679 memcpy(pbCursor, papszPostCmdArgs[i], cbTmp);
680 pbCursor += cbTmp;
681 }
682 assert(i == cPostCmdArgs);
683
684 assert(pbCursor - pbMsg == (size_t)cbMsg);
685
686 /*
687 * Done.
688 */
689 *pcbMsg = cbMsg;
690 return pbMsg;
691}
692
693
694/**
695 * Sends the job message to the given worker, respawning the worker if
696 * necessary.
697 *
698 * @returns 0 on success, non-zero on failure.
699 *
700 * @param pWorker The work to send the request to. The worker is
701 * on the idle list.
702 * @param pvMsg The message to send.
703 * @param cbMsg The size of the message.
704 * @param fNoRespawning Set if
705 * @param cVerbosity The verbosity level.
706 */
707static int kSubmitSendJobMessage(PWORKERINSTANCE pWorker, void const *pvMsg, uint32_t cbMsg, int fNoRespawning, int cVerbosity)
708{
709 int cRetries;
710
711 /*
712 * Respawn the worker if it stopped by itself and we closed the pipe already.
713 */
714#ifdef KBUILD_OS_WINDOWS
715 if (pWorker->hPipe == INVALID_HANDLE_VALUE)
716#else
717 if (pWorker->fdSocket == -1)
718#endif
719 {
720 if (!fNoRespawning)
721 {
722 if (cVerbosity > 0)
723 fprintf(stderr, "kSubmit: Respawning worker (#1)...\n");
724 if (kSubmitRespawnWorker(pWorker, cVerbosity) != 0)
725 return 2;
726 }
727
728 }
729
730 /*
731 * Restart-on-broken-pipe loop. Necessary?
732 */
733 for (cRetries = !fNoRespawning ? 1 : 0; ; cRetries--)
734 {
735 /*
736 * Try write the message.
737 */
738 uint32_t cbLeft = cbMsg;
739 uint8_t const *pbLeft = (uint8_t const *)pvMsg;
740#ifdef KBUILD_OS_WINDOWS
741 DWORD dwErr;
742 DWORD cbWritten;
743 while (WriteFile(pWorker->hPipe, pbLeft, cbLeft, &cbWritten, NULL /*pOverlapped*/))
744 {
745 assert(cbWritten <= cbLeft);
746 cbLeft -= cbWritten;
747 if (!cbLeft)
748 return 0;
749
750 /* This scenario shouldn't really ever happen. But just in case... */
751 pbLeft += cbWritten;
752 }
753 dwErr = GetLastError();
754 if ( ( dwErr != ERROR_BROKEN_PIPE
755 && dwErr != ERROR_NO_DATA)
756 || cRetries <= 0)
757 return errx(1, "Error writing to worker: %u", dwErr);
758#else
759 ssize_t cbWritten
760 while ((cbWritten = write(pWorker->fdSocket, pbLeft, cbLeft)) >= 0)
761 {
762 assert(cbWritten <= cbLeft);
763 cbLeft -= cbWritten;
764 if (!cbLeft)
765 return 0;
766
767 pbLeft += cbWritten;
768 }
769 if ( ( errno != EPIPE
770 && errno != ENOTCONN
771 && errno != ECONNRESET))
772 || cRetries <= 0)
773 return err(1, "Error writing to worker");
774# error "later"
775#endif
776
777 /*
778 * Broken connection. Try respawn the worker.
779 */
780 if (cVerbosity > 0)
781 fprintf(stderr, "kSubmit: Respawning worker (#2)...\n");
782 if (kSubmitRespawnWorker(pWorker, cVerbosity) != 0)
783 return 2;
784 }
785}
786
787
788/**
789 * Closes the connection on a worker that said it is going to exit now.
790 *
791 * This is a way of dealing with imperfect resource management in the worker, it
792 * will monitor it a little and trigger a respawn when it looks bad.
793 *
794 * This function just closes the pipe / socket connection to the worker. The
795 * kSubmitSendJobMessage function will see this a trigger a respawn the next
796 * time the worker is engaged. This will usually mean there's a little delay in
797 * which the process can terminate without us having to actively wait for it.
798 *
799 * @param pWorker The worker instance.
800 */
801static void kSubmitCloseConnectOnExitingWorker(PWORKERINSTANCE pWorker)
802{
803#ifdef KBUILD_OS_WINDOWS
804 if (!CloseHandle(pWorker->hPipe))
805 warnx("CloseHandle(pWorker->hPipe): %u", GetLastError());
806 pWorker->hPipe = INVALID_HANDLE_VALUE;
807#else
808 if (close(pWorker->fdSocket) != 0)
809 warn("close(pWorker->fdSocket)");
810 pWorker->fdSocket = -1;
811#endif
812}
813
814
815#ifdef KBUILD_OS_WINDOWS
816
817/**
818 * Handles read failure.
819 *
820 * @returns Exit code.
821 * @param pWorker The worker instance.
822 * @param dwErr The error code.
823 * @param pszWhere Where it failed.
824 */
825static int kSubmitWinReadFailed(PWORKERINSTANCE pWorker, DWORD dwErr, const char *pszWhere)
826{
827 DWORD dwExitCode;
828
829 if (pWorker->cbResultRead == 0)
830 errx(1, "%s/ReadFile failed: %u", pszWhere, dwErr);
831 else
832 errx(1, "%s/ReadFile failed: %u (read %u bytes)", pszWhere, dwErr, pWorker->cbResultRead);
833 assert(dwErr != 0);
834
835 /* Complete the result. */
836 pWorker->Result.s.rcExit = 127;
837 pWorker->Result.s.bWorkerExiting = 1;
838 pWorker->cbResultRead = sizeof(pWorker->Result);
839
840 if (GetExitCodeProcess(pWorker->hProcess, &dwExitCode))
841 {
842 if (dwExitCode != 0)
843 pWorker->Result.s.rcExit = dwExitCode;
844 }
845
846 return dwErr != 0 ? (int)(dwErr & 0x7fffffff) : 0x7fffffff;
847
848}
849
850
851/**
852 * Used by
853 * @returns 0 if we got the whole result, -1 if I/O is pending, and windows last
854 * error on ReadFile failure.
855 * @param pWorker The worker instance.
856 */
857static int kSubmitReadMoreResultWin(PWORKERINSTANCE pWorker, const char *pszWhere)
858{
859 /*
860 * Set up the result read, telling the sub_proc.c unit about it.
861 */
862 while (pWorker->cbResultRead < sizeof(pWorker->Result))
863 {
864 DWORD cbRead = 0;
865
866 BOOL fRc = ResetEvent(pWorker->OverlappedRead.hEvent);
867 assert(fRc); (void)fRc;
868
869 pWorker->OverlappedRead.Offset = 0;
870 pWorker->OverlappedRead.OffsetHigh = 0;
871
872 if (!ReadFile(pWorker->hPipe, &pWorker->Result.ab[pWorker->cbResultRead],
873 sizeof(pWorker->Result) - pWorker->cbResultRead,
874 &cbRead,
875 &pWorker->OverlappedRead))
876 {
877 DWORD dwErr = GetLastError();
878 if (dwErr == ERROR_IO_PENDING)
879 return -1;
880 return kSubmitWinReadFailed(pWorker, dwErr, pszWhere);
881 }
882
883 pWorker->cbResultRead += cbRead;
884 assert(pWorker->cbResultRead <= sizeof(pWorker->Result));
885 }
886 return 0;
887}
888
889#endif /* KBUILD_OS_WINDOWS */
890
891/**
892 * Marks the worker active.
893 *
894 * On windows this involves setting up the async result read and telling
895 * sub_proc.c about the process.
896 *
897 * @returns Exit code.
898 * @param pWorker The worker instance to mark as active.
899 * @param cVerbosity The verbosity level.
900 * @param pChild The kmk child to associate the job with.
901 * @param pPidSpawned If @a *pPidSpawned is non-zero if the child is
902 * running, otherwise the worker is already done
903 * and we've returned the exit code of the job.
904 */
905static int kSubmitMarkActive(PWORKERINSTANCE pWorker, int cVerbosity, struct child *pChild, pid_t *pPidSpawned)
906{
907#ifdef KBUILD_OS_WINDOWS
908 int rc;
909#endif
910
911 pWorker->cbResultRead = 0;
912
913#ifdef KBUILD_OS_WINDOWS
914 /*
915 * Setup the async result read on windows. If we're slow and the worker
916 * very fast, this may actually get the result immediately.
917 */
918l_again:
919 rc = kSubmitReadMoreResultWin(pWorker, "kSubmitMarkActive");
920 if (rc == -1)
921 {
922 if (process_kmk_register_submit(pWorker->OverlappedRead.hEvent, (intptr_t)pWorker, pPidSpawned) == 0)
923 { /* likely */ }
924 else
925 {
926 /* We need to do the waiting here because sub_proc.c has too much to do. */
927 warnx("Too many processes for sub_proc.c to handle!");
928 WaitForSingleObject(pWorker->OverlappedRead.hEvent, INFINITE);
929 goto l_again;
930 }
931 }
932 else
933 {
934 assert(rc == 0 || pWorker->Result.s.rcExit != 0);
935 if (pWorker->Result.s.bWorkerExiting)
936 kSubmitCloseConnectOnExitingWorker(pWorker);
937 *pPidSpawned = 0;
938 return pWorker->Result.s.rcExit;
939 }
940#endif
941
942 /*
943 * Mark it busy and move it to the active instance.
944 */
945 pWorker->pBusyWith = pChild;
946#ifndef KBUILD_OS_WINDOWS
947 *pPidSpawned = pWorker->pid;
948#endif
949
950 kSubmitListUnlink(&g_IdleList, pWorker);
951 kSubmitListAppend(&g_BusyList, pWorker);
952 return 0;
953}
954
955
956#ifdef KBUILD_OS_WINDOWS
957
958/**
959 * Retrieve the worker child result.
960 *
961 * If incomplete, we restart the ReadFile operation like kSubmitMarkActive does.
962 *
963 * @returns 0 on success, -1 if ReadFile was restarted.
964 * @param pvUser The worker instance.
965 * @param prcExit Where to return the exit code.
966 * @param piSigNo Where to return the signal number.
967 */
968int kSubmitSubProcGetResult(intptr_t pvUser, int *prcExit, int *piSigNo)
969{
970 PWORKERINSTANCE pWorker = (PWORKERINSTANCE)pvUser;
971
972 /*
973 * Get the overlapped result. There should be one since we're here
974 * because of a satisfied WaitForMultipleObject.
975 */
976 DWORD cbRead = 0;
977 if (GetOverlappedResult(pWorker->hPipe, &pWorker->OverlappedRead, &cbRead, TRUE))
978 {
979 pWorker->cbResultRead += cbRead;
980 assert(pWorker->cbResultRead <= sizeof(pWorker->Result));
981
982 /* More to be read? */
983 while (pWorker->cbResultRead < sizeof(pWorker->Result))
984 {
985 int rc = kSubmitReadMoreResultWin(pWorker, "kSubmitSubProcGetResult/more");
986 if (rc == -1)
987 return -1;
988 assert(rc == 0 || pWorker->Result.s.rcExit != 0);
989 }
990 assert(pWorker->cbResultRead == sizeof(pWorker->Result));
991 }
992 else
993 {
994 DWORD dwErr = GetLastError();
995 kSubmitWinReadFailed(pWorker, dwErr, "kSubmitSubProcGetResult/result");
996 }
997
998 /*
999 * Okay, we've got a result.
1000 */
1001 *prcExit = pWorker->Result.s.rcExit;
1002 switch (pWorker->Result.s.rcExit)
1003 {
1004 default: *piSigNo = 0; break;
1005 case CONTROL_C_EXIT: *piSigNo = SIGINT; break;
1006 case STATUS_INTEGER_DIVIDE_BY_ZERO: *piSigNo = SIGFPE; break;
1007 case STATUS_ACCESS_VIOLATION: *piSigNo = SIGSEGV; break;
1008 case STATUS_PRIVILEGED_INSTRUCTION:
1009 case STATUS_ILLEGAL_INSTRUCTION: *piSigNo = SIGILL; break;
1010 }
1011 if (pWorker->Result.s.bWorkerExiting)
1012 kSubmitCloseConnectOnExitingWorker(pWorker);
1013
1014 return 0;
1015}
1016
1017
1018int kSubmitSubProcKill(intptr_t pvUser, int iSignal)
1019{
1020 return -1;
1021}
1022
1023
1024/**
1025 * Called by process_cleanup when it's done with the worker.
1026 *
1027 * @param pvUser The worker instance.
1028 */
1029void kSubmitSubProcCleanup(intptr_t pvUser)
1030{
1031 PWORKERINSTANCE pWorker = (PWORKERINSTANCE)pvUser;
1032 kSubmitListUnlink(&g_BusyList, pWorker);
1033 kSubmitListAppend(&g_IdleList, pWorker);
1034}
1035
1036#endif /* KBUILD_OS_WINDOWS */
1037
1038
1039/**
1040 * atexit callback that trigger worker termination.
1041 */
1042static void kSubmitAtExitCallback(void)
1043{
1044 PWORKERINSTANCE pWorker;
1045 DWORD msStartTick;
1046 DWORD cKillRaids = 0;
1047
1048 /*
1049 * Tell all the workers to exit by breaking the connection.
1050 */
1051 for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1052 kSubmitCloseConnectOnExitingWorker(pWorker);
1053 for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1054 kSubmitCloseConnectOnExitingWorker(pWorker);
1055
1056 /*
1057 * Wait a little while for them to stop.
1058 */
1059 Sleep(0);
1060 msStartTick = GetTickCount();
1061 for (;;)
1062 {
1063 /*
1064 * Collect handles of running processes.
1065 */
1066 PWORKERINSTANCE apWorkers[MAXIMUM_WAIT_OBJECTS];
1067 HANDLE ahHandles[MAXIMUM_WAIT_OBJECTS];
1068 DWORD cHandles = 0;
1069
1070 for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1071 if (pWorker->hProcess != INVALID_HANDLE_VALUE)
1072 {
1073 if (cHandles < MAXIMUM_WAIT_OBJECTS)
1074 {
1075 apWorkers[cHandles] = pWorker;
1076 ahHandles[cHandles] = pWorker->hProcess;
1077 }
1078 cHandles++;
1079 }
1080 for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1081 if (pWorker->hProcess != INVALID_HANDLE_VALUE)
1082 {
1083 if (cHandles < MAXIMUM_WAIT_OBJECTS)
1084 {
1085 apWorkers[cHandles] = pWorker;
1086 ahHandles[cHandles] = pWorker->hProcess;
1087 }
1088 cHandles++;
1089 }
1090 if (cHandles == 0)
1091 return;
1092
1093 /*
1094 * Wait for the processes.
1095 */
1096 for (;;)
1097 {
1098 DWORD cMsElapsed = GetTickCount() - msStartTick;
1099 DWORD dwWait = WaitForMultipleObjects(cHandles <= MAXIMUM_WAIT_OBJECTS ? cHandles : MAXIMUM_WAIT_OBJECTS,
1100 ahHandles, FALSE /*bWaitAll*/,
1101 cMsElapsed < 5000 ? 5000 - cMsElapsed + 16 : 16);
1102 if ( dwWait >= WAIT_OBJECT_0
1103 && dwWait <= WAIT_OBJECT_0 + MAXIMUM_WAIT_OBJECTS)
1104 {
1105 size_t idx = dwWait - WAIT_OBJECT_0;
1106 CloseHandle(apWorkers[idx]->hProcess);
1107 apWorkers[idx]->hProcess = INVALID_HANDLE_VALUE;
1108
1109 if (cHandles <= MAXIMUM_WAIT_OBJECTS)
1110 {
1111 /* Restart the wait with the worker removed, or quit if it was the last worker. */
1112 cHandles--;
1113 if (!cHandles)
1114 return;
1115 if (idx != cHandles)
1116 {
1117 apWorkers[idx] = apWorkers[cHandles];
1118 ahHandles[idx] = ahHandles[cHandles];
1119 }
1120 continue;
1121 }
1122 /* else: Reconstruct the wait array so we get maximum coverage. */
1123 }
1124 else if (dwWait == WAIT_TIMEOUT)
1125 {
1126 /* Terminate the whole bunch. */
1127 cKillRaids++;
1128 if (cKillRaids == 1 && getenv("KMK_KSUBMIT_NO_KILL") == NULL)
1129 {
1130 fprintf(stderr, "kmk/kSubmit: Killing %u lingering worker processe(s)!\n", cHandles);
1131 for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1132 if (pWorker->hProcess != INVALID_HANDLE_VALUE)
1133 TerminateProcess(pWorker->hProcess, WAIT_TIMEOUT);
1134 for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
1135 if (pWorker->hProcess != INVALID_HANDLE_VALUE)
1136 TerminateProcess(pWorker->hProcess, WAIT_TIMEOUT);
1137 }
1138 else
1139 {
1140 fprintf(stderr, "kmk/kSubmit: Giving up on the last %u worker processe(s). :-(\n", cHandles);
1141 return;
1142 }
1143 }
1144 else
1145 {
1146 /* Some kind of wait error. Could be a bad handle, check each and remove
1147 bad ones as well as completed ones. */
1148 size_t idx;
1149 fprintf(stderr, "kmk/kSubmit: WaitForMultipleObjects unexpectedly returned %#u (err=%u)\n",
1150 dwWait, GetLastError());
1151 for (idx = 0; idx < cHandles; idx++)
1152 {
1153 dwWait = WaitForSingleObject(ahHandles[idx], 0 /*ms*/);
1154 if (dwWait != WAIT_TIMEOUT)
1155 {
1156 CloseHandle(apWorkers[idx]->hProcess);
1157 apWorkers[idx]->hProcess = INVALID_HANDLE_VALUE;
1158 }
1159 }
1160 }
1161 break;
1162 } /* wait loop */
1163 } /* outer wait loop */
1164}
1165
1166
1167static int usage(FILE *pOut, const char *argv0)
1168{
1169 fprintf(pOut,
1170 "usage: %s [-Z|--zap-env] [-E|--set <var=val>] [-U|--unset <var=val>]\n"
1171 " [-C|--chdir <dir>] [--wcc-brain-damage] [--no-pch-caching]\n"
1172 " [-3|--32-bit] [-6|--64-bit] [-v]\n"
1173 " [-P|--post-cmd <cmd> [args]] -- <program> [args]\n"
1174 " or: %s --help\n"
1175 " or: %s --version\n"
1176 "\n"
1177 "Options:\n"
1178 " -Z, --zap-env, -i, --ignore-environment\n"
1179 " Zaps the environment. Position dependent.\n"
1180 " -E, --set <var>=[value]\n"
1181 " Sets an enviornment variable putenv fashion. Position dependent.\n"
1182 " -U, --unset <var>\n"
1183 " Removes an environment variable. Position dependent.\n"
1184 " -C, --chdir <dir>\n"
1185 " Specifies the current directory for the program. Relative paths\n"
1186 " are relative to the previous -C option. Default is getcwd value.\n"
1187 " -3, --32-bit\n"
1188 " Selects a 32-bit kWorker process. Default: kmk bit count\n"
1189 " -6, --64-bit\n"
1190 " Selects a 64-bit kWorker process. Default: kmk bit count\n"
1191 " --wcc-brain-damage\n"
1192 " Works around wcc and wcc386 (Open Watcom) not following normal\n"
1193 " quoting conventions on Windows, OS/2, and DOS.\n"
1194 " --no-pch-caching\n"
1195 " Do not cache precompiled header files because they're being created.\n"
1196 " -v,--verbose\n"
1197 " More verbose execution.\n"
1198 " -P|--post-cmd <cmd> ...\n"
1199 " For running a built-in command on the output, specifying the command\n"
1200 " and all it's parameters. Currently supported commands:\n"
1201 " kDepObj\n"
1202 " -V,--version\n"
1203 " Show the version number.\n"
1204 " -h,--help\n"
1205 " Show this usage information.\n"
1206 "\n"
1207 ,
1208 argv0, argv0, argv0);
1209 return 2;
1210}
1211
1212
1213int kmk_builtin_kSubmit(int argc, char **argv, char **envp, struct child *pChild, pid_t *pPidSpawned)
1214{
1215 int rcExit = 0;
1216 int iArg;
1217 unsigned cAllocatedEnvVars;
1218 unsigned iEnvVar;
1219 unsigned cEnvVars;
1220 char **papszEnv = NULL;
1221 const char *pszExecutable = NULL;
1222 int iPostCmd = argc;
1223 int cPostCmdArgs = 0;
1224 unsigned cBitsWorker = g_cArchBits;
1225 int fWatcomBrainDamage = 0;
1226 int fNoPchCaching = 0;
1227 int cVerbosity = 0;
1228 size_t const cbCwdBuf = GET_PATH_MAX;
1229 PATH_VAR(szCwd);
1230
1231 g_progname = argv[0];
1232
1233 /*
1234 * Create default program environment.
1235 */
1236 if (getcwd_fs(szCwd, cbCwdBuf) != NULL)
1237 { /* likely */ }
1238 else
1239 return err(1, "getcwd_fs failed\n");
1240
1241 papszEnv = pChild->environment;
1242 if (!papszEnv)
1243 pChild->environment = papszEnv = target_environment(pChild->file);
1244 cEnvVars = 0;
1245 while (papszEnv[cEnvVars] != NULL)
1246 cEnvVars++;
1247 cAllocatedEnvVars = cEnvVars;
1248
1249 /*
1250 * Parse the command line.
1251 */
1252 for (iArg = 1; iArg < argc; iArg++)
1253 {
1254 const char *pszArg = argv[iArg];
1255 if (*pszArg == '-')
1256 {
1257 char chOpt = *++pszArg;
1258 pszArg++;
1259 if (chOpt != '-')
1260 {
1261 if (chOpt != '\0')
1262 { /* likely */ }
1263 else
1264 {
1265 errx(1, "Incomplete option: '-'");
1266 return usage(stderr, argv[0]);
1267 }
1268 }
1269 else
1270 {
1271 /* '--' indicates where the bits to execute start. */
1272 if (*pszArg == '\0')
1273 {
1274 iArg++;
1275 break;
1276 }
1277
1278 if ( strcmp(pszArg, "wcc-brain-damage") == 0
1279 || strcmp(pszArg, "watcom-brain-damage") == 0)
1280 {
1281 fWatcomBrainDamage = 1;
1282 continue;
1283 }
1284
1285 if (strcmp(pszArg, "no-pch-caching") == 0)
1286 {
1287 fNoPchCaching = 1;
1288 continue;
1289 }
1290
1291 /* convert to short. */
1292 if (strcmp(pszArg, "help") == 0)
1293 chOpt = 'h';
1294 else if (strcmp(pszArg, "version") == 0)
1295 chOpt = 'V';
1296 else if (strcmp(pszArg, "set") == 0)
1297 chOpt = 'E';
1298 else if (strcmp(pszArg, "unset") == 0)
1299 chOpt = 'U';
1300 else if ( strcmp(pszArg, "zap-env") == 0
1301 || strcmp(pszArg, "ignore-environment") == 0 /* GNU env compatibility. */ )
1302 chOpt = 'Z';
1303 else if (strcmp(pszArg, "chdir") == 0)
1304 chOpt = 'C';
1305 else if (strcmp(pszArg, "post-cmd") == 0)
1306 chOpt = 'P';
1307 else if (strcmp(pszArg, "32-bit") == 0)
1308 chOpt = '3';
1309 else if (strcmp(pszArg, "64-bit") == 0)
1310 chOpt = '6';
1311 else if (strcmp(pszArg, "verbose") == 0)
1312 chOpt = 'v';
1313 else if (strcmp(pszArg, "executable") == 0)
1314 chOpt = 'e';
1315 else
1316 {
1317 errx(2, "Unknown option: '%s'", pszArg - 2);
1318 return usage(stderr, argv[0]);
1319 }
1320 pszArg = "";
1321 }
1322
1323 do
1324 {
1325 /* Get option value first, if the option takes one. */
1326 const char *pszValue = NULL;
1327 switch (chOpt)
1328 {
1329 case 'E':
1330 case 'U':
1331 case 'C':
1332 case 'e':
1333 if (*pszArg != '\0')
1334 pszValue = pszArg + (*pszArg == ':' || *pszArg == '=');
1335 else if (++iArg < argc)
1336 pszValue = argv[iArg];
1337 else
1338 {
1339 errx(1, "Option -%c requires a value!", chOpt);
1340 return usage(stderr, argv[0]);
1341 }
1342 break;
1343 }
1344
1345 switch (chOpt)
1346 {
1347 case 'Z':
1348 case 'i': /* GNU env compatibility. */
1349 for (iEnvVar = 0; iEnvVar < cEnvVars; iEnvVar++)
1350 free(papszEnv[iEnvVar]);
1351 papszEnv[0] = NULL;
1352 cEnvVars = 0;
1353 break;
1354
1355 case 'E':
1356 rcExit = kBuiltinOptEnvSet(&papszEnv, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
1357 pChild->environment = papszEnv;
1358 if (rcExit == 0)
1359 break;
1360 return rcExit;
1361
1362 case 'U':
1363 rcExit = kBuiltinOptEnvUnset(papszEnv, &cEnvVars, cVerbosity, pszValue);
1364 if (rcExit == 0)
1365 break;
1366 return rcExit;
1367
1368 case 'C':
1369 rcExit = kBuiltinOptChDir(szCwd, cbCwdBuf, pszValue);
1370 if (rcExit == 0)
1371 break;
1372 return rcExit;
1373
1374 case 'P':
1375 if (cPostCmdArgs > 0)
1376 return errx(1, "The -P option can only be used once!");
1377 if (*pszArg != '\0')
1378 return errx(1, "The cmd part of the -P needs to be a separate argument!");
1379 iPostCmd = ++iArg;
1380 if (iArg >= argc)
1381 return errx(1, "The -P option requires a command following it!");
1382 while (iArg < argc && strcmp(argv[iArg], "--") != 0)
1383 iArg++;
1384 cPostCmdArgs = iArg - iPostCmd;
1385 iArg--;
1386 break;
1387
1388 case '3':
1389 cBitsWorker = 32;
1390 break;
1391
1392 case '6':
1393 cBitsWorker = 64;
1394 break;
1395
1396 case 'e':
1397 pszExecutable = pszValue;
1398 break;
1399
1400 case 'v':
1401 cVerbosity++;
1402 break;
1403
1404 case 'h':
1405 usage(stdout, argv[0]);
1406 return 0;
1407
1408 case 'V':
1409 return kbuild_version(argv[0]);
1410 }
1411 } while ((chOpt = *pszArg++) != '\0');
1412 }
1413 else
1414 {
1415 errx(1, "Unknown argument: '%s'", pszArg);
1416 return usage(stderr, argv[0]);
1417 }
1418 }
1419
1420 /*
1421 * Check that we've got something to execute.
1422 */
1423 if (iArg < argc)
1424 {
1425 uint32_t cbMsg;
1426 void *pvMsg = kSubmitComposeJobMessage(pszExecutable, &argv[iArg], papszEnv, szCwd,
1427 fWatcomBrainDamage, fNoPchCaching,
1428 &argv[iPostCmd], cPostCmdArgs, &cbMsg);
1429 PWORKERINSTANCE pWorker = kSubmitSelectWorkSpawnNewIfNecessary(cBitsWorker, cVerbosity);
1430 if (pWorker)
1431 {
1432 if (!pszExecutable)
1433 pszExecutable = argv[iArg];
1434
1435 rcExit = kSubmitSendJobMessage(pWorker, pvMsg, cbMsg, 0 /*fNoRespawning*/, cVerbosity);
1436 if (rcExit == 0)
1437 rcExit = kSubmitMarkActive(pWorker, cVerbosity, pChild, pPidSpawned);
1438
1439 if (!g_fAtExitRegistered)
1440 if (atexit(kSubmitAtExitCallback) == 0)
1441 g_fAtExitRegistered = 1;
1442 }
1443 else
1444 rcExit = 1;
1445 free(pvMsg);
1446 }
1447 else
1448 {
1449 errx(1, "Nothing to executed!");
1450 rcExit = usage(stderr, argv[0]);
1451 }
1452
1453 return rcExit;
1454}
1455
1456
1457
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