annotate src/os/unix/rfork_thread.S @ 635:18268abd340c release-0.3.39

nginx-0.3.39-RELEASE import *) Feature: the "uninitialized_variable_warn" directive; the logging level of the "uninitialized variable" message was lowered from "alert" to "warn". *) Feature: the "override_charset" directive. *) Change: now if the unknown variable is used in the "echo" and "if expr='$name'" SSI-commands, then the "unknown variable" message is not logged. *) Bugfix: the active connection counter increased on the exceeding of the connection limit specified by the "worker_connections" directive; the bug had appeared in 0.2.0. *) Bugfix: the limit rate might not work on some condition; the bug had appeared in 0.3.38.
author Igor Sysoev <igor@sysoev.ru>
date Mon, 17 Apr 2006 19:55:41 +0000
parents 621229427cba
children d620f497c50f
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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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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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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
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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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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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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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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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28 mov 16(%ebp), %eax # the thread start address
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29 mov %eax, (%esi)
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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
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39
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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40 parent:
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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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43 leave
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44 ret
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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 ...
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50 add $4, %esp
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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
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60 leave
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61 PIC_PROLOGUE
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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))
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67 pop %ecx
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68 PIC_EPILOGUE
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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
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71 mov $-1, %edx
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72 ret