Mercurial > hg > nginx
annotate src/os/unix/rfork_thread.S @ 4244:df9d3dd8cfc0 stable-1.0
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> |
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date | Tue, 01 Nov 2011 11:26:56 +0000 |
parents | 621229427cba |
children | d620f497c50f |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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5 |
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6 |
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7 #include <sys/syscall.h> |
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8 #include <machine/asm.h> |
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9 |
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10 /* |
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11 * rfork_thread(3) - rfork_thread(flags, stack, func, arg); |
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12 */ |
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13 |
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14 #define KERNCALL int $0x80 |
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15 |
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16 ENTRY(rfork_thread) |
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17 push %ebp |
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18 mov %esp, %ebp |
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19 push %esi |
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20 |
483 | 21 mov 12(%ebp), %esi # the thread stack address |
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22 |
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23 sub $4, %esi |
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24 mov 20(%ebp), %eax # the thread argument |
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25 mov %eax, (%esi) |
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26 |
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27 sub $4, %esi |
483 | 28 mov 16(%ebp), %eax # the thread start address |
267
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29 mov %eax, (%esi) |
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30 |
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31 push 8(%ebp) # rfork(2) flags |
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32 push $0 |
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33 mov $SYS_rfork, %eax |
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34 KERNCALL |
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35 jc error |
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36 |
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37 cmp $0, %edx |
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38 jne child |
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39 |
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40 parent: |
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41 add $8, %esp |
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42 pop %esi |
483 | 43 leave |
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44 ret |
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45 |
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46 child: |
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47 mov %esi, %esp |
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48 pop %eax |
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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 |
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52 push %eax |
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53 push $0 |
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54 mov $SYS_exit, %eax # ... and exit(2) after a thread would return |
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55 KERNCALL |
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56 |
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57 error: |
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58 add $8, %esp |
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59 pop %esi |
483 | 60 leave |
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61 PIC_PROLOGUE |
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62 |
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63 /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */ |
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64 |
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65 push %eax |
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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) |
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70 mov $-1, %eax |
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71 mov $-1, %edx |
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72 ret |