std::this_thread::sleep_for<\/p>\n\n\n\n
Defined in header – \u5b9a\u4e49\u4e8e\u5934\u6587\u4ef6<\/p>\n\n\n\n
template
void sleep_for (const chrono::duration& rel_time);<\/p>\n\n\n\n
\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\u6267\u884c\uff0c\u81f3\u5c11\u7ecf\u8fc7\u6307\u5b9a\u7684 sleep_duration\u3002<\/p>\n\n\n\n
\u6b64\u51fd\u6570\u53ef\u80fd\u963b\u585e\u957f\u4e8e sleep_duration\uff0c\u56e0\u4e3a\u8c03\u5ea6\u6216\u8d44\u6e90\u4e89\u8bae\u5ef6\u8fdf\u3002<\/p>\n\n\n\n
\u6807\u51c6\u5e93\u5efa\u8bae\u7528\u7a33\u5b9a\u65f6\u949f\u5ea6\u91cf\u65f6\u957f\u3002\u82e5\u5b9e\u73b0\u7528\u7cfb\u7edf\u65f6\u95f4\u4ee3\u66ff\uff0c\u5219\u7b49\u5f85\u65f6\u95f4\u4ea6\u53ef\u80fd\u5bf9\u65f6\u949f\u8c03\u8282\u654f\u611f\u3002<\/p>\n\n\n\n
Sleep for time span – \u7761\u7720\u4e00\u6bb5\u65f6\u95f4<\/p>\n\n\n\n
Blocks execution of the calling thread during the span of time specified by rel_time.
\u5728 rel_time \u6307\u5b9a\u7684\u65f6\u95f4\u6bb5\u5185\u963b\u6b62\u8c03\u7528\u7ebf\u7a0b\u7684\u6267\u884c\u3002<\/p>\n\n\n\n
The execution of the current thread is stopped until at least rel_time has passed from now. Other threads continue their execution.
\u5f53\u524d\u7ebf\u7a0b\u7684\u6267\u884c\u5c06\u505c\u6b62\uff0c\u76f4\u5230\u4ece\u73b0\u5728\u8d77\u81f3\u5c11\u7ecf\u8fc7 rel_time \u4e3a\u6b62\u3002\u5176\u4ed6\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n\n\n\n
rel_time
The time span after which the calling thread shall resume its execution.
\u8c03\u7528\u7ebf\u7a0b\u5e94\u5728\u5176\u540e\u6062\u590d\u6267\u884c\u7684\u65f6\u95f4\u95f4\u9694\u3002<\/p>\n\n\n\n
Note that multi-threading management operations may cause certain delays beyond this.
\u8bf7\u6ce8\u610f\uff0c\u591a\u7ebf\u7a0b\u7ba1\u7406\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67d0\u4e9b\u5ef6\u8fdf\u3002<\/p>\n\n\n\n
duration is an object that represents a specific relative time.
\u6301\u7eed\u65f6\u95f4\u662f\u4ee3\u8868\u7279\u5b9a\u76f8\u5bf9\u65f6\u95f4\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n
\u8981\u7761\u7720\u7684\u65f6\u957f\u3002<\/p>\n\n\n\n
resume [r\u026a’zju\u02d0m]\uff1an. \u7b80\u5386 v. \u7ee7\u7eed\uff0c\u91cd\u8fd4<\/p>\n\n\n\n
1<\/code><\/pre>\n\n\n\n\n- Return value<\/li>\n<\/ol>\n\n\n\n
none<\/p>\n\n\n\n
\n- Examples
4.1 std::this_thread::sleep_for<\/li>\n<\/ol>\n\n\n\n\/\/============================================================================
\/\/ Name : std::this_thread::sleep_for
\/\/ Author : Yongqiang Cheng
\/\/ Version : Version 1.0.0
\/\/ Copyright : Copyright (c) 2019 Yongqiang Cheng
\/\/ Description : Hello World in C++, Ansi-style
\/\/============================================================================<\/p>\n\n\n\n
include \/\/ std::cout, std::endl<\/h1>\n\n\n\ninclude \/\/ std::this_thread::sleep_for<\/h1>\n\n\n\ninclude \/\/ std::chrono::seconds<\/h1>\n\n\n\n
int main()
{
std::cout << “countdown:\\n”; for (int i = 10; i > 0; –i)
{
std::cout << i << std::endl;
std::this_thread::sleep_for(std::chrono::seconds(1));
}
std::cout << “Lift off!\\n”;<\/p>\n\n\n\n
return 0;<\/code><\/pre>\n\n\n\n}<\/p>\n\n\n\n
1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25<\/code><\/pre>\n\n\n\nOutput (after 10 seconds):<\/p>\n\n\n\n
countdown:
10
9
8
7
6
5
4
3
2
1
Lift off!<\/p>\n\n\n\n
1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13<\/code><\/pre>\n\n\n\n4.2 std::this_thread::sleep_for<\/p>\n\n\n\n
\/\/============================================================================
\/\/ Name : std::this_thread::sleep_for
\/\/ Author : Yongqiang Cheng
\/\/ Version : Version 1.0.0
\/\/ Copyright : Copyright (c) 2019 Yongqiang Cheng
\/\/ Description : Hello World in C++, Ansi-style
\/\/============================================================================<\/p>\n\n\n\n
include \/\/ std::cout, std::endl<\/h1>\n\n\n\ninclude \/\/ std::this_thread::sleep_for<\/h1>\n\n\n\ninclude \/\/ std::chrono::seconds<\/h1>\n\n\n\n
int main()
{
using namespace std::chrono_literals;<\/p>\n\n\n\n
std::cout << \"Hello waiter\\n\" << std::flush;\n\n\/\/ C++14\nauto start = std::chrono::high_resolution_clock::now();\nstd::this_thread::sleep_for(2s);\nauto end = std::chrono::high_resolution_clock::now();\n\nstd::chrono::duration<double, std::milli> elapsed = end - start;\nstd::cout << \"Waited \" << elapsed.count() << \" ms\\n\";\n\nreturn 0;<\/code><\/pre>\n\n\n\n}<\/p>\n\n\n\n
1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29<\/code><\/pre>\n\n\n\n10:22:39 **** Incremental Build of configuration Debug for project hello_world ****
make all
Building file: ..\/src\/hello_world.cpp
Invoking: GCC C++ Compiler
g++ -std=c++1y -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF”src\/hello_world.d” -MT”src\/hello_world.o” -o “src\/hello_world.o” “..\/src\/hello_world.cpp”
Finished building: ..\/src\/hello_world.cpp<\/p>\n\n\n\n
Building target: hello_world
Invoking: GCC C++ Linker
g++ -o “hello_world” .\/src\/hello_world.o -lpthread
Finished building target: hello_world<\/p>\n\n\n\n
10:22:40 Build Finished (took 895ms)<\/p>\n\n\n\n
1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14<\/code><\/pre>\n\n\n\nHello waiter
Waited 2000.06 ms<\/p>\n\n\n\n
1\n2\n3<\/code><\/pre>\n\n\n\n\n- Exception safety – \u5f02\u5e38\u5b89\u5168\u6027<\/li>\n<\/ol>\n\n\n\n
If the type of rel_time never throws exceptions (like the instantiations of duration in header ), this function never throws exceptions (no-throw guarantee).
\u5982\u679c rel_time \u7684\u7c7b\u578b\u4ece\u4e0d\u629b\u51fa\u5f02\u5e38 (\u5982\u5934\u6587\u4ef6 \u4e2d\u7684 duration` \u5b9e\u4f8b\u5316)\uff0c\u5219\u6b64\u51fd\u6570\u4ece\u4e0d\u629b\u51fa\u5f02\u5e38 (\u65e0\u629b\u51fa\u4fdd\u8bc1)\u3002<\/p>\n\n\n\n
assignment [\u0259’sa\u026anm\u0259nt]\uff1an. \u4efb\u52a1\uff0c\u5e03\u7f6e\uff0c\u8d4b\u503c<\/p>\n\n\n\n
1<\/code><\/pre>\n\n\n\nReferences<\/p>\n\n\n\n
http:\/\/www.cplusplus.com\/reference\/thread\/this_thread\/sleep_for\/
https:\/\/en.cppreference.com\/w\/cpp\/thread\/sleep_for
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