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Alan Somers ad8b59ffe7 libc/libc/rpc: refactor some global variables 
* Combine dg_fd_locks and dg_cv into one array.
* Similarly for vc_fd_locks and vc_cv
* Turn some macros into inline functions

This is a mostly cosmetic change to make refactoring these strutures in
a future commit easier.

Sponsored by:	Axcient
Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D42597

(cherry picked from commit a5c2f4e939)

lib/libc/rpc: switch the per-fd structs in clnt_{dg,vc}.c to RB Trees

This saves oodles of memory, especially when "ulimit -n" is large.  It
also prevents a buffer overflow if getrlimit should fail.

Also replace per-fd condvars with mutexes to simplify the code.

PR:		274968
Sponsored by:	Axcient
Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D42597

(cherry picked from commit 24938f9311)
2023-11-30 13:42:55 -07:00
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rpc libc/libc/rpc: refactor some global variables 2023-11-30 13:42:55 -07:00
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