If the macro constant __STDC_NO_THREADS__(C11) is defined by the compiler, the header <threads.h> and all of the names listed here are not provided.
Threads
| Defined in header <threads.h> | |
|---|---|
thrd_t | implementation-defined complete object type identifying a thread |
| (C11) | creates a thread (function) |
| (C11) | checks if two identifiers refer to the same thread (function) |
| (C11) | obtains the current thread identifier (function) |
| (C11) | suspends execution of the calling thread for the given period of time (function) |
| (C11) | yields the current time slice (function) |
| (C11) | terminates the calling thread (function) |
| (C11) | detaches a thread (function) |
| (C11) | blocks until a thread terminates (function) |
| indicates a thread error status (constant) | |
| thrd_start_t (C11) | a typedef of the function pointer type int(*)(void*), used by thrd_create (typedef) |
Mutual exclusion
| Defined in header <threads.h> | |
|---|---|
mtx_t | mutex identifier |
| (C11) | creates a mutex (function) |
| (C11) | blocks until locks a mutex (function) |
| (C11) | blocks until locks a mutex or times out (function) |
| (C11) | locks a mutex or returns without blocking if already locked (function) |
| (C11) | unlocks a mutex (function) |
| (C11) | destroys a mutex (function) |
| (C11)(C11)(C11) | defines the type of a mutex (enum) |
Call once | |
| (C11) | calls a function exactly once (function) |
Condition variables
| Defined in header <threads.h> | |
|---|---|
cnd_t | condition variable identifier |
| (C11) | creates a condition variable (function) |
| (C11) | unblocks one thread blocked on a condition variable (function) |
| (C11) | unblocks all threads blocked on a condition variable (function) |
| (C11) | blocks on a condition variable (function) |
| (C11) | blocks on a condition variable, with a timeout (function) |
| (C11) | destroys a condition variable (function) |
Thread-local storage
| Defined in header <threads.h> | |
|---|---|
| (C11) | thread local type macro (macro constant) |
tss_t | thread-specific storage pointer |
| (C11) | maximum number of times destructors are called (macro constant) |
tss_dtor_t | function pointer type void(*)(void*), used for TSS destructor |
| (C11) | creates thread-specific storage pointer with a given destructor (function) |
| (C11) | reads from thread-specific storage (function) |
| (C11) | write to thread-specific storage (function) |
| (C11) | releases the resources held by a given thread-specific pointer (function) |
Reserved identifiers
Function names, type names, and enumeration constants that begin with either cnd_, mtx_, thrd_, or tss_, and a lowercase letter may be added to the declarations in the <threads.h> header in future revisions of the C standard, and portable programs should not use those identifiers.
References
- C11 standard (ISO/IEC 9899:2011):
- 7.26 Threads <threads.h> (p: 376-387)
- 7.31.15 Threads <threads.h> (p: 456)
See also
C++ documentation for Thread support library |
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