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  • C library:

    • <cassert> (assert.h)
    • <cctype> (ctype.h)
    • <cerrno> (errno.h)
    • C++11
      <cfenv> (fenv.h)
    • <cfloat> (float.h)
    • C++11
      <cinttypes> (inttypes.h)
    • <ciso646> (iso646.h)
    • <climits> (limits.h)
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      <cstdbool> (stdbool.h)
    • <cstddef> (stddef.h)
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    • <cstdlib> (stdlib.h)
    • <cstring> (string.h)
    • C++11
      <ctgmath> (tgmath.h)
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      <cuchar> (uchar.h)
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      <forward_list>
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      <unordered_map>
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      <unordered_set>
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      <random>
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<future>

  • classes

    • C++11
      future
    • C++11
      future_error
    • C++11
      packaged_task
    • C++11
      promise
    • C++11
      shared_future
  • enum classes

    • C++11
      future_errc
    • C++11
      future_status
    • C++11
      launch
  • functions

    • C++11
      async
    • C++11
      future_category
  • Reference
  • <future>
header

<future>

Future
Header with facilities that allow asynchronous access to values set by specific providers, possibly in a different thread.

Each of these providers (which are either promise or packaged_task objects, or calls to async) share access to a shared state with a future object: the point where the provider makes the shared state ready is synchronized with the point the future object accesses the shared state.

Classes

Providers

promise
Promise (class template)
packaged_task
Packaged task (class template)

Futures

future
Future (class template)
shared_future
Shared future (class template)

Other types

future_error
Future error exception (class)
future_errc
Error conditions for future objects (enum class)
future_status
Return value for timed future operations (enum class)
launch
Launching policy for async (enum class)

Functions

Providers

async
Call function asynchronously (function template)

Other functions

future_category
Return future category (function)
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