Mercurial > hg > nginx-quic
annotate src/os/unix/rfork_thread.S @ 5115:a29c574d61fa
Status: introduced the "ngx_stat_waiting" counter.
And corresponding variable $connections_waiting was added.
Previously, waiting connections were counted as the difference between
active connections and the sum of reading and writing connections.
That made it impossible to count more than one request in one connection
as reading or writing (as is the case for SPDY).
Also, we no longer count connections in handshake state as waiting.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Fri, 15 Mar 2013 20:00:49 +0000 |
parents | d620f497c50f |
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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 |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <sys/syscall.h> |
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9 #include <machine/asm.h> |
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10 |
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11 /* |
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12 * rfork_thread(3) - rfork_thread(flags, stack, func, arg); |
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13 */ |
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14 |
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15 #define KERNCALL int $0x80 |
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16 |
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17 ENTRY(rfork_thread) |
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18 push %ebp |
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19 mov %esp, %ebp |
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20 push %esi |
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21 |
483 | 22 mov 12(%ebp), %esi # the thread stack address |
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23 |
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24 sub $4, %esi |
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25 mov 20(%ebp), %eax # the thread argument |
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26 mov %eax, (%esi) |
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27 |
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28 sub $4, %esi |
483 | 29 mov 16(%ebp), %eax # the thread start address |
267
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30 mov %eax, (%esi) |
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31 |
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32 push 8(%ebp) # rfork(2) flags |
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33 push $0 |
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34 mov $SYS_rfork, %eax |
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35 KERNCALL |
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36 jc error |
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37 |
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38 cmp $0, %edx |
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39 jne child |
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40 |
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41 parent: |
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42 add $8, %esp |
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43 pop %esi |
483 | 44 leave |
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45 ret |
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46 |
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47 child: |
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48 mov %esi, %esp |
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49 pop %eax |
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50 call *%eax # call a thread start address ... |
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51 add $4, %esp |
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52 |
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53 push %eax |
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54 push $0 |
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55 mov $SYS_exit, %eax # ... and exit(2) after a thread would return |
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56 KERNCALL |
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57 |
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58 error: |
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59 add $8, %esp |
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60 pop %esi |
483 | 61 leave |
267
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62 PIC_PROLOGUE |
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63 |
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64 /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */ |
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65 |
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66 push %eax |
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67 call PIC_PLT(CNAME(__error)) |
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68 pop %ecx |
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69 PIC_EPILOGUE |
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70 mov %ecx, (%eax) |
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71 mov $-1, %eax |
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72 mov $-1, %edx |
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73 ret |