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view src/os/unix/rfork_thread.S @ 633:cde3626b2d0d NGINX_0_8_47
nginx 0.8.47
*) Bugfix: $request_time variable had invalid values for subrequests.
*) Bugfix: errors intercepted by error_page could be cached.
*) Bugfix: a cache manager process my got caught in an endless loop, if
max_size parameter was used; the bug had appeared in 0.8.46.
author | Igor Sysoev <http://sysoev.ru> |
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date | Wed, 28 Jul 2010 00:00:00 +0400 |
parents | da8c190bdaba |
children |
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/* * Copyright (C) Igor Sysoev */ #include <sys/syscall.h> #include <machine/asm.h> /* * rfork_thread(3) - rfork_thread(flags, stack, func, arg); */ #define KERNCALL int $0x80 ENTRY(rfork_thread) push %ebp mov %esp, %ebp push %esi mov 12(%ebp), %esi # the thread stack address sub $4, %esi mov 20(%ebp), %eax # the thread argument mov %eax, (%esi) sub $4, %esi mov 16(%ebp), %eax # the thread start address mov %eax, (%esi) push 8(%ebp) # rfork(2) flags push $0 mov $SYS_rfork, %eax KERNCALL jc error cmp $0, %edx jne child parent: add $8, %esp pop %esi leave ret child: mov %esi, %esp pop %eax call *%eax # call a thread start address ... add $4, %esp push %eax push $0 mov $SYS_exit, %eax # ... and exit(2) after a thread would return KERNCALL error: add $8, %esp pop %esi leave PIC_PROLOGUE /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */ push %eax call PIC_PLT(CNAME(__error)) pop %ecx PIC_EPILOGUE mov %ecx, (%eax) mov $-1, %eax mov $-1, %edx ret