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reserve capacity to fast_oss

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This commit is contained in:
gabime
2014-03-16 20:48:37 +02:00
parent 08ba1791ba
commit 0209765b8f
2 changed files with 10 additions and 1 deletions
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5
example/example.cpp
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@@ -18,7 +18,10 @@ using namespace utils;
int main(int argc, char* argv[]) int main(int argc, char* argv[])
{ {
if(argc || argv) {};
if(argc || argv) {};
std::string s;
cout << "STRING cap: " << format(s.capacity()) << endl;
auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, 0); auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, 0);
//auto fsink = std::make_shared<sinks::simple_file_sink>("simplelog", "txt"); //auto fsink = std::make_shared<sinks::simple_file_sink>("simplelog", "txt");

6
include/c11log/details/fast_oss.h
View File

@@ -40,6 +40,12 @@ protected:
virtual std::streamsize xsputn(const char_type* s, std::streamsize count) override virtual std::streamsize xsputn(const char_type* s, std::streamsize count) override
{ {
auto ssize = _str.size();
auto cap_left = _str.capacity() - ssize;
if(cap_left < static_cast<std::size_t>(count))
_str.reserve(ssize + count + 128);
_str.append(s, static_cast<unsigned int>(count)); _str.append(s, static_cast<unsigned int>(count));
return count; return count;
} }