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| author | Erlang/OTP <[email protected]> | 2010-03-22 14:51:35 +0000 |
|---|---|---|
| committer | Erlang/OTP <[email protected]> | 2010-03-22 15:56:43 +0100 |
| commit | a4b4d36cdbbd692123443a1d3f19f1c452963201 (patch) | |
| tree | 218002c4a2b38f69eb67d6388c8034820812fd47 /erts/doc/src/erlang.xml | |
| parent | 835dba95f810cc925ac856171014b9dbea8c90be (diff) | |
| parent | 24095d93fb28bdd60abe771a426e39c6ff0f72c7 (diff) | |
| download | otp-a4b4d36cdbbd692123443a1d3f19f1c452963201.tar.gz otp-a4b4d36cdbbd692123443a1d3f19f1c452963201.tar.bz2 otp-a4b4d36cdbbd692123443a1d3f19f1c452963201.zip | |
Merge branch 'pan/otp_8332_halfword' into dev
* pan/otp_8332_halfword:
Teach testcase in driver_suite the new prototype for driver_async
wx: Correct usage of driver callbacks from wx thread
Adopt the new (R13B04) Nif functionality to the halfword codebase
Support monitoring and demonitoring from driver threads
Fix further test-suite problems
Correct the VM to work for more test suites
Teach {wordsize,internal|external} to system_info/1
Make tracing and distribution work
Turn on instruction packing in the loader and virtual machine
Add the BeamInstr data type for loaded BEAM code
Fix the BEAM dissambler for the half-word emulator
Store pointers to heap data in 32-bit words
Add a custom mmap wrapper to force heaps into the lower address range
Fit all heap data into the 32-bit address range
Diffstat (limited to 'erts/doc/src/erlang.xml')
| -rw-r--r-- | erts/doc/src/erlang.xml | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index c4751d7463..c95a7005ec 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -5850,9 +5850,23 @@ true</pre> </item> <tag><c>wordsize</c></tag> <item> - <p>Returns the word size in bytes as an integer, i.e. on a - 32-bit architecture 4 is returned, and on a 64-bit - architecture 8 is returned.</p> + <p>Same as <c>{wordsize, internal}</c></p> + </item> + <tag><c>{wordsize, internal}</c></tag> + <item> + <p>Returns the size of Erlang term words in bytes as an + integer, i.e. on a 32-bit architecture 4 is returned, + and on a pure 64-bit architecture 8 is returned. On a + halfword 64-bit emulator, 4 is returned, as the Erlang + terms are stored using a virtual wordsize of half the + systems wordsize.</p> + </item> + <tag><c>{wordsize, external}</c></tag> + <item> + <p>Returns the true wordsize of the emulator, i.e. the size + of a pointer, in bytes as an integer. On a pure 32-bit + architecture 4 is returned, on both a halfword and pure + 64-bit architecture, 8 is returned.</p> </item> </taglist> <note> |