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annotate src/os/unix/rfork_thread.S @ 4244:df9d3dd8cfc0 stable-1.0

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Merging r4020: SIGWINCH/NOACCEPT signal is disabled now in non-daemon mode. Non-daemon mode is currently used by supervisord, daemontools and so on or during debugging. The NOACCEPT signal is only used for online upgrade which is not supported when nginx is run under supervisord, etc., so this change should not break existant setups.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 01 Nov 2011 11:26:56 +0000
parents 621229427cba
children d620f497c50f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 267
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 267
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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6
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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7 #include <sys/syscall.h>
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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8 #include <machine/asm.h>
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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9
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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10 /*
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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11 * rfork_thread(3) - rfork_thread(flags, stack, func, arg);
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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12 */
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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13
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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14 #define KERNCALL int $0x80
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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15
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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16 ENTRY(rfork_thread)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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17 push %ebp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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18 mov %esp, %ebp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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19 push %esi
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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20
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621229427cba nginx-0.1.16-RELEASE import
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21 mov 12(%ebp), %esi # the thread stack address
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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23 sub $4, %esi
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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24 mov 20(%ebp), %eax # the thread argument
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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25 mov %eax, (%esi)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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26
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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27 sub $4, %esi
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621229427cba nginx-0.1.16-RELEASE import
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28 mov 16(%ebp), %eax # the thread start address
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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29 mov %eax, (%esi)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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31 push 8(%ebp) # rfork(2) flags
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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32 push $0
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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33 mov $SYS_rfork, %eax
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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34 KERNCALL
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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35 jc error
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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36
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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37 cmp $0, %edx
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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38 jne child
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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39
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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40 parent:
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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41 add $8, %esp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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42 pop %esi
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621229427cba nginx-0.1.16-RELEASE import
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parents: 444
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43 leave
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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44 ret
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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45
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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46 child:
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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47 mov %esi, %esp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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48 pop %eax
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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49 call *%eax # call a thread start address ...
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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50 add $4, %esp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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51
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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52 push %eax
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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53 push $0
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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54 mov $SYS_exit, %eax # ... and exit(2) after a thread would return
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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55 KERNCALL
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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56
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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57 error:
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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58 add $8, %esp
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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59 pop %esi
483
621229427cba nginx-0.1.16-RELEASE import
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parents: 444
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60 leave
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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61 PIC_PROLOGUE
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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62
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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63 /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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64
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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65 push %eax
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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66 call PIC_PLT(CNAME(__error))
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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67 pop %ecx
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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68 PIC_EPILOGUE
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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69 mov %ecx, (%eax)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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70 mov $-1, %eax
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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71 mov $-1, %edx
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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72 ret