HP-UX 11i Knowledge-on-Demand
HP-UX 11i Knowledge-on-Demand
HP-UX 11i Knowledge-on-Demand
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Mercury overview: public functi<strong>on</strong>s<br />
Mercury public functi<strong>on</strong>s<br />
• Have a memory regi<strong>on</strong> shared with all threads in the system. This area<br />
is accessed by the Mercury library <strong>on</strong>ly, never directly by the user<br />
code. This regi<strong>on</strong> is read-<strong>on</strong>ly for user threads.<br />
• The kernel updates the informati<strong>on</strong> in this regi<strong>on</strong> as it happens, <strong>on</strong> a<br />
“best effort” basis.<br />
• Only threads that request it will be tracked in this global memory<br />
regi<strong>on</strong>.<br />
• Allow <strong>on</strong>e thread to see what state other threads are in as well as<br />
allow a thread to become a thread with a viewable state<br />
• Run fast because they are mostly memory operati<strong>on</strong>s, not system calls<br />
• Have as their original purpose promoting the efficient use of shared<br />
resources<br />
<str<strong>on</strong>g>HP</str<strong>on</strong>g>-<str<strong>on</strong>g>UX</str<strong>on</strong>g> <str<strong>on</strong>g>11i</str<strong>on</strong>g> v3 Training
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