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fixed bug in redis_command::run where existing a invlid conn's refering

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zsxxsz 2015-07-19 10:30:27 +08:00
parent 70387f948e
commit 33125fe158
3 changed files with 24 additions and 6 deletions
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6
lib_acl_cpp/changes.txt
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@ -1,8 +1,12 @@
修改历史列表：
------------------------------------------------------------------------
328) 2015.7.19
328.1) bugfix: redis_command.cpp 中的 run(redis_client_cluster*, size_t) 函数
中可能存在当 conn 对象被释放后再次非法引用的情形，现在将该对象的释放放在引用的代码之后
327) 2015.7.16
327.1) bugfix: redis_comman.cpp 中的 run(redis_client_cluster*, size_t) 函数
327.1) bugfix: redis_command.cpp 中的 run(redis_client_cluster*, size_t) 函数
中，当 conf->eof() 时，若 conn = peek_conn(xxx) 返回 NULL，则应直接返回 NULL，否则
会引起下面的空指针引用异常

2
lib_acl_cpp/lib_acl_cpp_vc2012.vcxproj
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@ -174,7 +174,7 @@
<ClCompile>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>.\include;..\lib_acl\include;..\lib_protocol\include;..\include\sqlite;..\include\zlib;..\include\mysql;..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>_DEBUG;_LIB;_MT;USE_WIN_ICONV;HAS_POLARSSL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>_DEBUG;_LIB;_MT;USE_WIN_ICONV;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<MinimalRebuild>true</MinimalRebuild>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>

22
lib_acl_cpp/src/redis/redis_command.cpp
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@ -423,13 +423,12 @@ const redis_result* redis_command::run(redis_client_cluster* cluster,
continue;
}
// 将连接对象归还给连接池对象
else
conn->get_pool()->put(conn, true);
if (result_ == NULL)
{
// 将连接对象归还给连接池对象
conn->get_pool()->put(conn, true);
logger_error("result NULL");
return NULL;
}
@ -438,7 +437,10 @@ const redis_result* redis_command::run(redis_client_cluster* cluster,
if (type == REDIS_RESULT_UNKOWN)
{
// 将连接对象归还给连接池对象
conn->get_pool()->put(conn, true);
logger_error("unknown result type: %d", type);
return NULL;
}
@ -446,14 +448,26 @@ const redis_result* redis_command::run(redis_client_cluster* cluster,
{
// 如果发生重定向过程，则设置哈希槽对应 redis 服务地址
if (slot_ < 0 || !last_moved)
{
// 将连接对象归还给连接池对象
conn->get_pool()->put(conn, true);
return result_;
}
// XXX: 因为此处还要引用一次 conn 对象，所以将 conn
// 归还给连接池的过程须放在此段代码之后
const char* addr = conn->get_pool()->get_addr();
cluster->set_slot(slot_, addr);
// 将连接对象归还给连接池对象
conn->get_pool()->put(conn, true);
return result_;
}
// 以下过程不再引用该次的 conn 对象，此处将连接对象归还给连接池对象
conn->get_pool()->put(conn, true);
#define EQ(x, y) !strncasecmp((x), (y), sizeof(y) -1)
// 对于结果类型为错误类型，则需要进一步判断是否是重定向指令