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[Fix] 优化了ctp接口py转换层的性能

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1.使用特化版的strcpy_s，提升拷贝性能
      2.避免重复的string拷贝
This commit is contained in:
nanoric 2018-07-25 05:28:38 -04:00
parent f3dcc0bf20
commit f4f6d6742c
1 changed files with 10 additions and 8 deletions
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18
vnpy/api/ctp/vnctpmd/vnctpmd/vnctpmd.cpp
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@ -7,7 +7,7 @@
///从Python对象到C++类型转换用的函数 ///从Python对象到C++类型转换用的函数
///------------------------------------------------------------------------------------- ///-------------------------------------------------------------------------------------
void getInt(dict d, string key, int *value) void getInt(dict d, const string &key, int *value)
{ {
if (d.has_key(key)) //检查字典中是否存在该键值 if (d.has_key(key)) //检查字典中是否存在该键值
{ {
@ -20,7 +20,7 @@ void getInt(dict d, string key, int *value)
} }
}; };
void getDouble(dict d, string key, double *value) void getDouble(dict d, const string &key, double *value)
{ {
if (d.has_key(key)) if (d.has_key(key))
{ {
@ -33,7 +33,9 @@ void getDouble(dict d, string key, double *value)
} }
}; };
void getStr(dict d, string key, char *value) // 使用特化的strcpy_s，能提升性能
template <class CharType, size_t size>
void getStr(dict d, const string &key, const CharType(&value)[size])
{ {
if (d.has_key(key)) if (d.has_key(key))
{ {
@ -43,18 +45,18 @@ void getStr(dict d, string key, char *value)
{ {
string s = x(); string s = x();
const char *buffer = s.c_str(); const char *buffer = s.c_str();
//对字符串指针赋值必须使用strcpy_s, vs2013使用strcpy编译通不过
//+1应该是因为C++字符串的结尾符号？不是特别确定，不加这个1会出错
#ifdef _MSC_VER //WIN32 #ifdef _MSC_VER //WIN32
strcpy_s(value, strlen(buffer) + 1, buffer); strcpy_s(value, buffer);
#elif __GNUC__ #elif __GNUC__
strncpy(value, buffer, strlen(buffer) + 1); strncpy(value, buffer, strlen(buffer) + 1);
#else
#pragma error("unsupported compiler")
#endif #endif
} }
} }
}; }
void getChar(dict d, string key, char *value) void getChar(dict d, const string &key, char *value)
{ {
if (d.has_key(key)) if (d.has_key(key))
{ {