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SunOS 5.10 - man page for thr_setconcurrency (sunos section 3c)

thr_getconcurrency(3C)					   Standard C Library Functions 				    thr_getconcurrency(3C)

thr_getconcurrency, thr_setconcurrency - get or set thread concurrency level
cc -mt [ flag... ] file...[ library... ] #include <thread.h> int thr_setconcurrency(int new_level); int thr_getconcurrency(void);
These functions are obsolete and maintained for compatibility only. The thr_setconcurrency() function updates the desired concurrency level that libthread maintains for the calling process. This value does not affect the behavior of the calling process. The thr_getconcurrency() function returns the current value for the desired concurrency level.
The thr_getconcurrency() function always returns the current value for the desired concurrency level. If successful, the thr_setconcurrency() function returns 0. Otherwise, a non-zero value is returned to indicate the error.
The thr_setconcurrency() function will fail if: EAGAIN The specified concurrency level would cause a system resource to be exceeded. EINVAL The value for new_level is negative.
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+
thr_create(3C), attributes(5), standards(5) SunOS 5.10 11 May 1998 thr_getconcurrency(3C)

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