Difference between revisions of "cpp/atomic/atomic flag"
From cppreference.com
m (+memory orders (saves one mfence out of three emitted by my gcc)) |
(fmt) |
||
| Line 26: | Line 26: | ||
#include <iostream> | #include <iostream> | ||
#include <atomic> | #include <atomic> | ||
| + | |||
std::atomic_flag lock = ATOMIC_FLAG_INIT; | std::atomic_flag lock = ATOMIC_FLAG_INIT; | ||
| + | |||
void f(int n) | void f(int n) | ||
{ | { | ||
| Line 39: | Line 41: | ||
{ | { | ||
std::vector<std::thread> v; | std::vector<std::thread> v; | ||
| − | for(int n=0; n<10; ++n) | + | for (int n = 0; n < 10; ++n) { |
v.emplace_back(f, n); | v.emplace_back(f, n); | ||
| − | for(auto& t : v) | + | } |
| + | for (auto& t : v) { | ||
t.join(); | t.join(); | ||
| + | } | ||
} | } | ||
| output= | | output= | ||
Revision as of 08:20, 15 October 2011
Template:cpp/atomic/atomic flag/sidebar Template:ddcl list begin <tr class="t-dsc-header">
<td>Defined in header
</td>
<atomic>
<td></td> <td></td> </tr> <tr class="t-dcl ">
<td >class atomic_flag;
</td>
<td class="t-dcl-nopad"> </td> <td > Template:mark c++11 feature </td> </tr> Template:ddcl list end
An Template:cpp is an atomic boolean type. Unlike all specializations of Template:cpp, it is guaranteed to be lock-free.
Member functions
| constructs an atomic_flag (public member function) | |
| the assignment operator (public member function) |
