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| author | Jeffrey Yasskin <jyasskin@google.com> | 2009-10-22 20:10:20 +0000 |
|---|---|---|
| committer | Jeffrey Yasskin <jyasskin@google.com> | 2009-10-22 20:10:20 +0000 |
| commit | e0a234029b1b65f21169536f4c45e83743ed3cfa (patch) | |
| tree | 47c339af1f2fbc95bfa69c64488190662f759a32 /docs | |
| parent | 9d89df169027035bf692b3d397bb93cff7bdc860 (diff) | |
| download | external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.zip external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.tar.gz external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.tar.bz2 | |
Add a ValueMap<ValueOrSubclass*, T> type. ValueMap<Value*, T> is safe to use
even when keys get RAUWed and deleted during its lifetime. By default the keys
act like WeakVHs, but users can pass a third template parameter to configure
how updates work and whether to do anything beyond updating the map on each
action.
It's also possible to automatically acquire a lock around ValueMap updates
triggered by RAUWs and deletes, to support the ExecutionEngine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ProgrammersManual.html | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html index 68367de..e4e3dc2 100644 --- a/docs/ProgrammersManual.html +++ b/docs/ProgrammersManual.html @@ -83,6 +83,7 @@ option</a></li> <li><a href="#dss_stringmap">"llvm/ADT/StringMap.h"</a></li> <li><a href="#dss_indexedmap">"llvm/ADT/IndexedMap.h"</a></li> <li><a href="#dss_densemap">"llvm/ADT/DenseMap.h"</a></li> + <li><a href="#dss_valuemap">"llvm/ADT/ValueMap.h"</a></li> <li><a href="#dss_map"><map></a></li> <li><a href="#dss_othermap">Other Map-Like Container Options</a></li> </ul></li> @@ -1492,6 +1493,23 @@ inserted into the map) that it needs internally.</p> <!-- _______________________________________________________________________ --> <div class="doc_subsubsection"> + <a name="dss_valuemap">"llvm/ADT/ValueMap.h"</a> +</div> + +<div class="doc_text"> + +<p> +ValueMap is a wrapper around a <a href="#dss_densemap">DenseMap</a> mapping +Value*s (or subclasses) to another type. When a Value is deleted or RAUW'ed, +ValueMap will update itself so the new version of the key is mapped to the same +value, just as if the key were a WeakVH. You can configure exactly how this +happens, and what else happens on these two events, by passing +a <code>Config</code> parameter to the ValueMap template.</p> + +</div> + +<!-- _______________________________________________________________________ --> +<div class="doc_subsubsection"> <a name="dss_map"><map></a> </div> |