[erts] Lookup of key/value in dictionary using process_info/2

dgud · Sep 30, 2023 · 42a837c · 42a837c
1 parent 2bdd30b
commit 42a837c
Show file tree

Hide file tree

Showing 9 changed files with 513 additions and 53 deletions.
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
@@ -6923,6 +6923,11 @@ receive_replies(ReqId, N, Acc) ->
           <item>
             <p><c><anno>Dictionary</anno></c> is the process dictionary.</p>
           </item>
+          <tag><c>{{dictionary, <anno>Key</anno>}, <anno>Value</anno>}</c></tag>
+          <item>
+            <p><c><anno>Value</anno></c> associated with <c><anno>Key</anno></c> 
+               in the process dictionary.</p>
+          </item>
           <tag><c>{error_handler, <anno>Module</anno>}</c></tag>
           <item>
             <p><c><anno>Module</anno></c> is the error handler module used by

diff --git a/erts/emulator/beam/erl_alloc.h b/erts/emulator/beam/erl_alloc.h
@@ -355,6 +355,16 @@ erts_alloc_get_verify_unused_temp_alloc(Allctr_t **allctr);
 #define ERTS_ALC_DATA_ALIGN_SIZE(SZ) \
   (((((SZ) - 1) / 8) + 1) * 8)
 
+#if defined(ARCH_64)
+#define ERTS_ALC_WORD_ALIGN_SIZE(SZ) \
+    ERTS_ALC_DATA_ALIGN_SIZE((SZ))
+#elif defined(ARCH_32)
+#define ERTS_ALC_WORD_ALIGN_SIZE(SZ) \
+    (((((SZ) - 1) / 4) + 1) * 4)
+#else
+#error "Not supported word size"
+#endif
+
 #define ERTS_ALC_CACHE_LINE_ALIGN_SIZE(SZ) \
   (((((SZ) - 1) / ERTS_CACHE_LINE_SIZE) + 1) * ERTS_CACHE_LINE_SIZE)