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- #include <thread>
- #include <iostream>
- void run (int x) {
- std::cout<<".";
- }
- int main (int argc, char const *argv[])
- {
- std::thread t(run);
- }
- minimal.cpp:10:17: error: no matching constructor for initialization of 'std::thread'
- std::thread t(run,0);
- ^ ~~~~~
- /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/thread:372:9: note: candidate constructor template not viable: requires single argument '__f', but 2 arguments
- were provided
- thread::thread(_Fp __f)
- ^
- /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/thread:261:5: note: candidate constructor not viable: requires 1 argument, but 2 were provided
- thread(const thread&);
- ^
- /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/thread:268:5: note: candidate constructor not viable: requires 0 arguments, but 2 were provided
- thread() _NOEXCEPT : __t_(0) {}
- ^
- 1 error generated.
- #if !(__has_feature(cxx_variadic_templates))
- #define _LIBCPP_HAS_NO_VARIADICS
- #endif
- Xcode run:
- st...ok - lap: 4875 ms
- st/8...ok - lap: 1205 ms
- mt...ok - lap: 8330 ms
- st/mt ratio:**0.6**
- Instruments run:
- st...ok - lap: 2182 ms
- st/8...ok - lap: 545 ms
- mt...ok - lap: 596 ms
- st/mt ratio:**3.7**
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