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view src/os/unix/ngx_gcc_atomic_ppc.h @ 581:326634fb9d47 release-0.3.12
nginx-0.3.12-RELEASE import
*) Security: if nginx was built with the ngx_http_realip_module and the
"satisfy_any on" directive was used, then access and authorization
directives did not work. The ngx_http_realip_module was not built
and is not built by default.
*) Change: the "$time_gmt" variable name was changed to "$time_local".
*) Change: the "proxy_header_buffer_size" and
"fastcgi_header_buffer_size" directives was renamed to the
"proxy_buffer_size" and "fastcgi_buffer_size" directives.
*) Feature: the ngx_http_memcached_module.
*) Feature: the "proxy_buffering" directive.
*) Bugfix: the changes in accept mutex handling when the "rtsig" method
was used; the bug had appeared in 0.3.0.
*) Bugfix: if the client sent the "Transfer-Encoding: chunked" header
line, then nginx returns the 411 error.
*) Bugfix: if the "auth_basic" directive was inherited from the http
level, then the realm in the "WWW-Authenticate" header line was
without the "Basic realm" text.
*) Bugfix: if the "combined" format was explicitly specified in the
"access_log" directive, then the empty lines was written to the log;
the bug had appeared in 0.3.8.
*) Bugfix: nginx did not run on the sparc platform under any OS except
Solaris.
*) Bugfix: now it is not necessary to place space between the quoted
string and closing bracket in the "if" directive.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sat, 26 Nov 2005 10:11:11 +0000 |
parents | 4d9ea73a627a |
children | 3f8a2132b93d |
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/* * Copyright (C) Igor Sysoev */ /* * The ppc assembler treats ";" as comment, so we have to use "\n". * The minus in "bne-" is a hint for the branch prediction unit that * this branch is unlikely to be taken. * The "1b" means the nearest backward label "1" and the "1f" means * the nearest forward label "1". * * The "b" means that the base registers can be used only, i.e. * any register except r0. The r0 register always has a zero value and * could not be used in "addi r0, r0, 1". * The "=&b" means that no input registers can be used. */ static ngx_inline ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, ngx_atomic_uint_t set) { ngx_atomic_uint_t res, temp; __asm__ volatile ( " li %0, 0 \n" /* preset "0" to "res" */ " lwarx %1, 0, %2 \n" /* load from [lock] into "temp" */ /* and store reservation */ " cmpw %1, %3 \n" /* compare "temp" and "old" */ " bne- 1f \n" /* not equal */ " stwcx. %4, 0, %2 \n" /* store "set" into [lock] if reservation */ /* is not cleared */ " bne- 1f \n" /* the reservation was cleared */ " li %0, 1 \n" /* set "1" to "res" */ "1: \n" : "=&b" (res), "=&b" (temp) : "b" (lock), "b" (old), "b" (set) : "cc", "memory"); return res; } static ngx_inline ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) { ngx_atomic_uint_t res, temp; __asm__ volatile ( "1: lwarx %0, 0, %2 \n" /* load from [value] into "res" */ /* and store reservation */ " add %1, %0, %3 \n" /* "res" + "add" store in "temp" */ " stwcx. %1, 0, %2 \n" /* store "temp" into [value] if reservation */ /* is not cleared */ " bne- 1b \n" /* try again if reservation was cleared */ : "=&b" (res), "=&b" (temp) : "b" (value), "b" (add) : "cc", "memory"); return res; } #if (NGX_SMP) #define ngx_memory_barrier() __asm__ volatile ("sync\n" ::: "memory") #else #define ngx_memory_barrier() __asm__ volatile ("" ::: "memory") #endif